Initial commit

engine/editor/plugins/gizmos/SCsub

@@ -0,0 +1,6 @@
+#!/usr/bin/env python
+from misc.utility.scons_hints import *
+
+Import("env")
+
+env.add_source_files(env.editor_sources, "*.cpp")

engine/editor/plugins/gizmos/audio_listener_3d_gizmo_plugin.cpp

@@ -0,0 +1,56 @@
+/**************************************************************************/
+/*  audio_listener_3d_gizmo_plugin.cpp                                    */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#include "audio_listener_3d_gizmo_plugin.h"
+
+#include "editor/editor_node.h"
+#include "editor/editor_string_names.h"
+#include "scene/3d/audio_listener_3d.h"
+
+AudioListener3DGizmoPlugin::AudioListener3DGizmoPlugin() {
+	create_icon_material("audio_listener_3d_icon", EditorNode::get_singleton()->get_editor_theme()->get_icon(SNAME("GizmoAudioListener3D"), EditorStringName(EditorIcons)));
+}
+
+bool AudioListener3DGizmoPlugin::has_gizmo(Node3D *p_spatial) {
+	return Object::cast_to<AudioListener3D>(p_spatial) != nullptr;
+}
+
+String AudioListener3DGizmoPlugin::get_gizmo_name() const {
+	return "AudioListener3D";
+}
+
+int AudioListener3DGizmoPlugin::get_priority() const {
+	return -1;
+}
+
+void AudioListener3DGizmoPlugin::redraw(EditorNode3DGizmo *p_gizmo) {
+	const Ref<Material> icon = get_material("audio_listener_3d_icon", p_gizmo);
+	p_gizmo->add_unscaled_billboard(icon, 0.05);
+}

engine/editor/plugins/gizmos/audio_listener_3d_gizmo_plugin.h

@@ -0,0 +1,49 @@
+/**************************************************************************/
+/*  audio_listener_3d_gizmo_plugin.h                                      */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef AUDIO_LISTENER_3D_GIZMO_PLUGIN_H
+#define AUDIO_LISTENER_3D_GIZMO_PLUGIN_H
+
+#include "editor/plugins/node_3d_editor_gizmos.h"
+
+class AudioListener3DGizmoPlugin : public EditorNode3DGizmoPlugin {
+	GDCLASS(AudioListener3DGizmoPlugin, EditorNode3DGizmoPlugin);
+
+public:
+	bool has_gizmo(Node3D *p_spatial) override;
+	String get_gizmo_name() const override;
+	int get_priority() const override;
+
+	void redraw(EditorNode3DGizmo *p_gizmo) override;
+
+	AudioListener3DGizmoPlugin();
+};
+
+#endif // AUDIO_LISTENER_3D_GIZMO_PLUGIN_H

engine/editor/plugins/gizmos/audio_stream_player_3d_gizmo_plugin.cpp

@@ -0,0 +1,258 @@
+/**************************************************************************/
+/*  audio_stream_player_3d_gizmo_plugin.cpp                               */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#include "audio_stream_player_3d_gizmo_plugin.h"
+
+#include "editor/editor_node.h"
+#include "editor/editor_settings.h"
+#include "editor/editor_string_names.h"
+#include "editor/editor_undo_redo_manager.h"
+#include "scene/3d/audio_stream_player_3d.h"
+
+AudioStreamPlayer3DGizmoPlugin::AudioStreamPlayer3DGizmoPlugin() {
+	Color gizmo_color = EDITOR_GET("editors/3d_gizmos/gizmo_colors/stream_player_3d");
+
+	create_icon_material("stream_player_3d_icon", EditorNode::get_singleton()->get_editor_theme()->get_icon(SNAME("Gizmo3DSamplePlayer"), EditorStringName(EditorIcons)));
+	create_material("stream_player_3d_material_primary", gizmo_color);
+	create_material("stream_player_3d_material_secondary", gizmo_color * Color(1, 1, 1, 0.35));
+	// Enable vertex colors for the billboard material as the gizmo color depends on the
+	// AudioStreamPlayer3D attenuation type and source (Unit Size or Max Distance).
+	create_material("stream_player_3d_material_billboard", Color(1, 1, 1), true, false, true);
+	create_handle_material("handles");
+}
+
+bool AudioStreamPlayer3DGizmoPlugin::has_gizmo(Node3D *p_spatial) {
+	return Object::cast_to<AudioStreamPlayer3D>(p_spatial) != nullptr;
+}
+
+String AudioStreamPlayer3DGizmoPlugin::get_gizmo_name() const {
+	return "AudioStreamPlayer3D";
+}
+
+int AudioStreamPlayer3DGizmoPlugin::get_priority() const {
+	return -1;
+}
+
+String AudioStreamPlayer3DGizmoPlugin::get_handle_name(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const {
+	return "Emission Radius";
+}
+
+Variant AudioStreamPlayer3DGizmoPlugin::get_handle_value(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const {
+	AudioStreamPlayer3D *player = Object::cast_to<AudioStreamPlayer3D>(p_gizmo->get_node_3d());
+	return player->get_emission_angle();
+}
+
+void AudioStreamPlayer3DGizmoPlugin::set_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, Camera3D *p_camera, const Point2 &p_point) {
+	AudioStreamPlayer3D *player = Object::cast_to<AudioStreamPlayer3D>(p_gizmo->get_node_3d());
+
+	Transform3D gt = player->get_global_transform();
+	Transform3D gi = gt.affine_inverse();
+
+	Vector3 ray_from = p_camera->project_ray_origin(p_point);
+	Vector3 ray_dir = p_camera->project_ray_normal(p_point);
+	Vector3 ray_to = ray_from + ray_dir * 4096;
+
+	ray_from = gi.xform(ray_from);
+	ray_to = gi.xform(ray_to);
+
+	float closest_dist = 1e20;
+	float closest_angle = 1e20;
+
+	for (int i = 0; i < 180; i++) {
+		float a = Math::deg_to_rad((float)i);
+		float an = Math::deg_to_rad((float)(i + 1));
+
+		Vector3 from(Math::sin(a), 0, -Math::cos(a));
+		Vector3 to(Math::sin(an), 0, -Math::cos(an));
+
+		Vector3 r1, r2;
+		Geometry3D::get_closest_points_between_segments(from, to, ray_from, ray_to, r1, r2);
+		float d = r1.distance_to(r2);
+		if (d < closest_dist) {
+			closest_dist = d;
+			closest_angle = i;
+		}
+	}
+
+	if (closest_angle < 91) {
+		player->set_emission_angle(closest_angle);
+	}
+}
+
+void AudioStreamPlayer3DGizmoPlugin::commit_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, const Variant &p_restore, bool p_cancel) {
+	AudioStreamPlayer3D *player = Object::cast_to<AudioStreamPlayer3D>(p_gizmo->get_node_3d());
+
+	if (p_cancel) {
+		player->set_emission_angle(p_restore);
+
+	} else {
+		EditorUndoRedoManager *ur = EditorUndoRedoManager::get_singleton();
+		ur->create_action(TTR("Change AudioStreamPlayer3D Emission Angle"));
+		ur->add_do_method(player, "set_emission_angle", player->get_emission_angle());
+		ur->add_undo_method(player, "set_emission_angle", p_restore);
+		ur->commit_action();
+	}
+}
+
+void AudioStreamPlayer3DGizmoPlugin::redraw(EditorNode3DGizmo *p_gizmo) {
+	p_gizmo->clear();
+
+	if (p_gizmo->is_selected()) {
+		const AudioStreamPlayer3D *player = Object::cast_to<AudioStreamPlayer3D>(p_gizmo->get_node_3d());
+
+		if (player->get_attenuation_model() != AudioStreamPlayer3D::ATTENUATION_DISABLED || player->get_max_distance() > CMP_EPSILON) {
+			// Draw a circle to represent sound volume attenuation.
+			// Use only a billboard circle to represent radius.
+			// This helps distinguish AudioStreamPlayer3D gizmos from OmniLight3D gizmos.
+			const Ref<Material> lines_billboard_material = get_material("stream_player_3d_material_billboard", p_gizmo);
+
+			// Soft distance cap varies depending on attenuation model, as some will fade out more aggressively than others.
+			// Multipliers were empirically determined through testing.
+			float soft_multiplier;
+			switch (player->get_attenuation_model()) {
+				case AudioStreamPlayer3D::ATTENUATION_INVERSE_DISTANCE:
+					soft_multiplier = 12.0;
+					break;
+				case AudioStreamPlayer3D::ATTENUATION_INVERSE_SQUARE_DISTANCE:
+					soft_multiplier = 4.0;
+					break;
+				case AudioStreamPlayer3D::ATTENUATION_LOGARITHMIC:
+					soft_multiplier = 3.25;
+					break;
+				default:
+					// Ensures Max Distance's radius visualization is not capped by Unit Size
+					// (when the attenuation mode is Disabled).
+					soft_multiplier = 10000.0;
+					break;
+			}
+
+			// Draw the distance at which the sound can be reasonably heard.
+			// This can be either a hard distance cap with the Max Distance property (if set above 0.0),
+			// or a soft distance cap with the Unit Size property (sound never reaches true zero).
+			// When Max Distance is 0.0, `r` represents the distance above which the
+			// sound can't be heard in *most* (but not all) scenarios.
+			float r;
+			if (player->get_max_distance() > CMP_EPSILON) {
+				r = MIN(player->get_unit_size() * soft_multiplier, player->get_max_distance());
+			} else {
+				r = player->get_unit_size() * soft_multiplier;
+			}
+			Vector<Vector3> points_billboard;
+
+			for (int i = 0; i < 120; i++) {
+				// Create a circle.
+				const float ra = Math::deg_to_rad((float)(i * 3));
+				const float rb = Math::deg_to_rad((float)((i + 1) * 3));
+				const Point2 a = Vector2(Math::sin(ra), Math::cos(ra)) * r;
+				const Point2 b = Vector2(Math::sin(rb), Math::cos(rb)) * r;
+
+				// Draw a billboarded circle.
+				points_billboard.push_back(Vector3(a.x, a.y, 0));
+				points_billboard.push_back(Vector3(b.x, b.y, 0));
+			}
+
+			Color color;
+			switch (player->get_attenuation_model()) {
+				// Pick cold colors for all attenuation models (except Disabled),
+				// so that soft caps can be easily distinguished from hard caps
+				// (which use warm colors).
+				case AudioStreamPlayer3D::ATTENUATION_INVERSE_DISTANCE:
+					color = Color(0.4, 0.8, 1);
+					break;
+				case AudioStreamPlayer3D::ATTENUATION_INVERSE_SQUARE_DISTANCE:
+					color = Color(0.4, 0.5, 1);
+					break;
+				case AudioStreamPlayer3D::ATTENUATION_LOGARITHMIC:
+					color = Color(0.4, 0.2, 1);
+					break;
+				default:
+					// Disabled attenuation mode.
+					// This is never reached when Max Distance is 0, but the
+					// hue-inverted form of this color will be used if Max Distance is greater than 0.
+					color = Color(1, 1, 1);
+					break;
+			}
+
+			if (player->get_max_distance() > CMP_EPSILON) {
+				// Sound is hard-capped by max distance. The attenuation model still matters,
+				// so invert the hue of the color that was chosen above.
+				color.set_h(color.get_h() + 0.5);
+			}
+
+			p_gizmo->add_lines(points_billboard, lines_billboard_material, true, color);
+		}
+
+		if (player->is_emission_angle_enabled()) {
+			const float pc = player->get_emission_angle();
+			const float ofs = -Math::cos(Math::deg_to_rad(pc));
+			const float radius = Math::sin(Math::deg_to_rad(pc));
+
+			Vector<Vector3> points_primary;
+			points_primary.resize(200);
+
+			real_t step = Math_TAU / 100.0;
+			for (int i = 0; i < 100; i++) {
+				const float a = i * step;
+				const float an = (i + 1) * step;
+
+				const Vector3 from(Math::sin(a) * radius, Math::cos(a) * radius, ofs);
+				const Vector3 to(Math::sin(an) * radius, Math::cos(an) * radius, ofs);
+
+				points_primary.write[i * 2 + 0] = from;
+				points_primary.write[i * 2 + 1] = to;
+			}
+
+			const Ref<Material> material_primary = get_material("stream_player_3d_material_primary", p_gizmo);
+			p_gizmo->add_lines(points_primary, material_primary);
+
+			Vector<Vector3> points_secondary;
+			points_secondary.resize(16);
+
+			for (int i = 0; i < 8; i++) {
+				const float a = i * (Math_TAU / 8.0);
+				const Vector3 from(Math::sin(a) * radius, Math::cos(a) * radius, ofs);
+
+				points_secondary.write[i * 2 + 0] = from;
+				points_secondary.write[i * 2 + 1] = Vector3();
+			}
+
+			const Ref<Material> material_secondary = get_material("stream_player_3d_material_secondary", p_gizmo);
+			p_gizmo->add_lines(points_secondary, material_secondary);
+
+			Vector<Vector3> handles;
+			const float ha = Math::deg_to_rad(player->get_emission_angle());
+			handles.push_back(Vector3(Math::sin(ha), 0, -Math::cos(ha)));
+			p_gizmo->add_handles(handles, get_material("handles"));
+		}
+	}
+
+	const Ref<Material> icon = get_material("stream_player_3d_icon", p_gizmo);
+	p_gizmo->add_unscaled_billboard(icon, 0.05);
+}

engine/editor/plugins/gizmos/audio_stream_player_3d_gizmo_plugin.h

@@ -0,0 +1,53 @@
+/**************************************************************************/
+/*  audio_stream_player_3d_gizmo_plugin.h                                 */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef AUDIO_STREAM_PLAYER_3D_GIZMO_PLUGIN_H
+#define AUDIO_STREAM_PLAYER_3D_GIZMO_PLUGIN_H
+
+#include "editor/plugins/node_3d_editor_gizmos.h"
+
+class AudioStreamPlayer3DGizmoPlugin : public EditorNode3DGizmoPlugin {
+	GDCLASS(AudioStreamPlayer3DGizmoPlugin, EditorNode3DGizmoPlugin);
+
+public:
+	bool has_gizmo(Node3D *p_spatial) override;
+	String get_gizmo_name() const override;
+	int get_priority() const override;
+
+	String get_handle_name(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const override;
+	Variant get_handle_value(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const override;
+	void set_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, Camera3D *p_camera, const Point2 &p_point) override;
+	void commit_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, const Variant &p_restore, bool p_cancel = false) override;
+	void redraw(EditorNode3DGizmo *p_gizmo) override;
+
+	AudioStreamPlayer3DGizmoPlugin();
+};
+
+#endif // AUDIO_STREAM_PLAYER_3D_GIZMO_PLUGIN_H

engine/editor/plugins/gizmos/camera_3d_gizmo_plugin.cpp

@@ -0,0 +1,287 @@
+/**************************************************************************/
+/*  camera_3d_gizmo_plugin.cpp                                            */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#include "camera_3d_gizmo_plugin.h"
+
+#include "editor/editor_node.h"
+#include "editor/editor_settings.h"
+#include "editor/editor_string_names.h"
+#include "editor/editor_undo_redo_manager.h"
+#include "editor/plugins/node_3d_editor_plugin.h"
+#include "scene/3d/camera_3d.h"
+
+Camera3DGizmoPlugin::Camera3DGizmoPlugin() {
+	Color gizmo_color = EDITOR_GET("editors/3d_gizmos/gizmo_colors/camera");
+
+	create_material("camera_material", gizmo_color);
+	create_icon_material("camera_icon", EditorNode::get_singleton()->get_editor_theme()->get_icon(SNAME("GizmoCamera3D"), EditorStringName(EditorIcons)));
+	create_handle_material("handles");
+}
+
+bool Camera3DGizmoPlugin::has_gizmo(Node3D *p_spatial) {
+	return Object::cast_to<Camera3D>(p_spatial) != nullptr;
+}
+
+String Camera3DGizmoPlugin::get_gizmo_name() const {
+	return "Camera3D";
+}
+
+int Camera3DGizmoPlugin::get_priority() const {
+	return -1;
+}
+
+String Camera3DGizmoPlugin::get_handle_name(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const {
+	Camera3D *camera = Object::cast_to<Camera3D>(p_gizmo->get_node_3d());
+
+	if (camera->get_projection() == Camera3D::PROJECTION_PERSPECTIVE) {
+		return "FOV";
+	} else {
+		return "Size";
+	}
+}
+
+Variant Camera3DGizmoPlugin::get_handle_value(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const {
+	Camera3D *camera = Object::cast_to<Camera3D>(p_gizmo->get_node_3d());
+
+	if (camera->get_projection() == Camera3D::PROJECTION_PERSPECTIVE) {
+		return camera->get_fov();
+	} else {
+		return camera->get_size();
+	}
+}
+
+void Camera3DGizmoPlugin::set_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, Camera3D *p_camera, const Point2 &p_point) {
+	Camera3D *camera = Object::cast_to<Camera3D>(p_gizmo->get_node_3d());
+
+	Transform3D gt = camera->get_global_transform();
+	Transform3D gi = gt.affine_inverse();
+
+	Vector3 ray_from = p_camera->project_ray_origin(p_point);
+	Vector3 ray_dir = p_camera->project_ray_normal(p_point);
+
+	Vector3 s[2] = { gi.xform(ray_from), gi.xform(ray_from + ray_dir * 4096) };
+
+	if (camera->get_projection() == Camera3D::PROJECTION_PERSPECTIVE) {
+		Transform3D gt2 = camera->get_global_transform();
+		float a = _find_closest_angle_to_half_pi_arc(s[0], s[1], 1.0, gt2);
+		camera->set("fov", CLAMP(a * 2.0, 1, 179));
+	} else {
+		Camera3D::KeepAspect aspect = camera->get_keep_aspect_mode();
+		Vector3 camera_far = aspect == Camera3D::KeepAspect::KEEP_WIDTH ? Vector3(4096, 0, -1) : Vector3(0, 4096, -1);
+
+		Vector3 ra, rb;
+		Geometry3D::get_closest_points_between_segments(Vector3(0, 0, -1), camera_far, s[0], s[1], ra, rb);
+		float d = aspect == Camera3D::KeepAspect::KEEP_WIDTH ? ra.x * 2 : ra.y * 2;
+		if (Node3DEditor::get_singleton()->is_snap_enabled()) {
+			d = Math::snapped(d, Node3DEditor::get_singleton()->get_translate_snap());
+		}
+
+		d = CLAMP(d, 0.1, 16384);
+
+		camera->set("size", d);
+	}
+}
+
+void Camera3DGizmoPlugin::commit_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, const Variant &p_restore, bool p_cancel) {
+	Camera3D *camera = Object::cast_to<Camera3D>(p_gizmo->get_node_3d());
+
+	if (camera->get_projection() == Camera3D::PROJECTION_PERSPECTIVE) {
+		if (p_cancel) {
+			camera->set("fov", p_restore);
+		} else {
+			EditorUndoRedoManager *ur = EditorUndoRedoManager::get_singleton();
+			ur->create_action(TTR("Change Camera FOV"));
+			ur->add_do_property(camera, "fov", camera->get_fov());
+			ur->add_undo_property(camera, "fov", p_restore);
+			ur->commit_action();
+		}
+
+	} else {
+		if (p_cancel) {
+			camera->set("size", p_restore);
+		} else {
+			EditorUndoRedoManager *ur = EditorUndoRedoManager::get_singleton();
+			ur->create_action(TTR("Change Camera Size"));
+			ur->add_do_property(camera, "size", camera->get_size());
+			ur->add_undo_property(camera, "size", p_restore);
+			ur->commit_action();
+		}
+	}
+}
+
+void Camera3DGizmoPlugin::redraw(EditorNode3DGizmo *p_gizmo) {
+	Camera3D *camera = Object::cast_to<Camera3D>(p_gizmo->get_node_3d());
+
+	p_gizmo->clear();
+
+	Vector<Vector3> lines;
+	Vector<Vector3> handles;
+
+	Ref<Material> material = get_material("camera_material", p_gizmo);
+	Ref<Material> icon = get_material("camera_icon", p_gizmo);
+
+	const Size2i viewport_size = Node3DEditor::get_camera_viewport_size(camera);
+	const real_t viewport_aspect = viewport_size.x > 0 && viewport_size.y > 0 ? viewport_size.aspect() : 1.0;
+	const Size2 size_factor = viewport_aspect > 1.0 ? Size2(1.0, 1.0 / viewport_aspect) : Size2(viewport_aspect, 1.0);
+
+#define ADD_TRIANGLE(m_a, m_b, m_c) \
+	{                               \
+		lines.push_back(m_a);       \
+		lines.push_back(m_b);       \
+		lines.push_back(m_b);       \
+		lines.push_back(m_c);       \
+		lines.push_back(m_c);       \
+		lines.push_back(m_a);       \
+	}
+
+#define ADD_QUAD(m_a, m_b, m_c, m_d) \
+	{                                \
+		lines.push_back(m_a);        \
+		lines.push_back(m_b);        \
+		lines.push_back(m_b);        \
+		lines.push_back(m_c);        \
+		lines.push_back(m_c);        \
+		lines.push_back(m_d);        \
+		lines.push_back(m_d);        \
+		lines.push_back(m_a);        \
+	}
+
+	switch (camera->get_projection()) {
+		case Camera3D::PROJECTION_PERSPECTIVE: {
+			// The real FOV is halved for accurate representation
+			float fov = camera->get_fov() / 2.0;
+
+			const float hsize = Math::sin(Math::deg_to_rad(fov));
+			const float depth = -Math::cos(Math::deg_to_rad(fov));
+			Vector3 side = Vector3(hsize * size_factor.x, 0, depth);
+			Vector3 nside = Vector3(-side.x, side.y, side.z);
+			Vector3 up = Vector3(0, hsize * size_factor.y, 0);
+
+			ADD_TRIANGLE(Vector3(), side + up, side - up);
+			ADD_TRIANGLE(Vector3(), nside + up, nside - up);
+			ADD_TRIANGLE(Vector3(), side + up, nside + up);
+			ADD_TRIANGLE(Vector3(), side - up, nside - up);
+
+			handles.push_back(side);
+			side.x = MIN(side.x, hsize * 0.25);
+			nside.x = -side.x;
+			Vector3 tup(0, up.y + hsize / 2, side.z);
+			ADD_TRIANGLE(tup, side + up, nside + up);
+		} break;
+
+		case Camera3D::PROJECTION_ORTHOGONAL: {
+			Camera3D::KeepAspect aspect = camera->get_keep_aspect_mode();
+
+			float size = camera->get_size();
+			float keep_size = size * 0.5;
+
+			Vector3 right, up;
+			Vector3 back(0, 0, -1.0);
+			Vector3 front(0, 0, 0);
+
+			if (aspect == Camera3D::KeepAspect::KEEP_WIDTH) {
+				right = Vector3(keep_size, 0, 0);
+				up = Vector3(0, keep_size / viewport_aspect, 0);
+				handles.push_back(right + back);
+			} else {
+				right = Vector3(keep_size * viewport_aspect, 0, 0);
+				up = Vector3(0, keep_size, 0);
+				handles.push_back(up + back);
+			}
+
+			ADD_QUAD(-up - right, -up + right, up + right, up - right);
+			ADD_QUAD(-up - right + back, -up + right + back, up + right + back, up - right + back);
+			ADD_QUAD(up + right, up + right + back, up - right + back, up - right);
+			ADD_QUAD(-up + right, -up + right + back, -up - right + back, -up - right);
+
+			right.x = MIN(right.x, keep_size * 0.25);
+			Vector3 tup(0, up.y + keep_size / 2, back.z);
+			ADD_TRIANGLE(tup, right + up + back, -right + up + back);
+		} break;
+
+		case Camera3D::PROJECTION_FRUSTUM: {
+			float hsize = camera->get_size() / 2.0;
+
+			Vector3 side = Vector3(hsize, 0, -camera->get_near()).normalized();
+			side.x *= size_factor.x;
+			Vector3 nside = Vector3(-side.x, side.y, side.z);
+			Vector3 up = Vector3(0, hsize * size_factor.y, 0);
+			Vector3 offset = Vector3(camera->get_frustum_offset().x, camera->get_frustum_offset().y, 0.0);
+
+			ADD_TRIANGLE(Vector3(), side + up + offset, side - up + offset);
+			ADD_TRIANGLE(Vector3(), nside + up + offset, nside - up + offset);
+			ADD_TRIANGLE(Vector3(), side + up + offset, nside + up + offset);
+			ADD_TRIANGLE(Vector3(), side - up + offset, nside - up + offset);
+
+			side.x = MIN(side.x, hsize * 0.25);
+			nside.x = -side.x;
+			Vector3 tup(0, up.y + hsize / 2, side.z);
+			ADD_TRIANGLE(tup + offset, side + up + offset, nside + up + offset);
+		} break;
+	}
+
+#undef ADD_TRIANGLE
+#undef ADD_QUAD
+
+	p_gizmo->add_lines(lines, material);
+	p_gizmo->add_unscaled_billboard(icon, 0.05);
+	p_gizmo->add_collision_segments(lines);
+
+	if (!handles.is_empty()) {
+		p_gizmo->add_handles(handles, get_material("handles"));
+	}
+}
+
+float Camera3DGizmoPlugin::_find_closest_angle_to_half_pi_arc(const Vector3 &p_from, const Vector3 &p_to, float p_arc_radius, const Transform3D &p_arc_xform) {
+	//bleh, discrete is simpler
+	static const int arc_test_points = 64;
+	float min_d = 1e20;
+	Vector3 min_p;
+
+	for (int i = 0; i < arc_test_points; i++) {
+		float a = i * Math_PI * 0.5 / arc_test_points;
+		float an = (i + 1) * Math_PI * 0.5 / arc_test_points;
+		Vector3 p = Vector3(Math::cos(a), 0, -Math::sin(a)) * p_arc_radius;
+		Vector3 n = Vector3(Math::cos(an), 0, -Math::sin(an)) * p_arc_radius;
+
+		Vector3 ra, rb;
+		Geometry3D::get_closest_points_between_segments(p, n, p_from, p_to, ra, rb);
+
+		float d = ra.distance_to(rb);
+		if (d < min_d) {
+			min_d = d;
+			min_p = ra;
+		}
+	}
+
+	//min_p = p_arc_xform.affine_inverse().xform(min_p);
+	float a = (Math_PI * 0.5) - Vector2(min_p.x, -min_p.z).angle();
+	return Math::rad_to_deg(a);
+}

engine/editor/plugins/gizmos/camera_3d_gizmo_plugin.h

@@ -0,0 +1,56 @@
+/**************************************************************************/
+/*  camera_3d_gizmo_plugin.h                                              */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef CAMERA_3D_GIZMO_PLUGIN_H
+#define CAMERA_3D_GIZMO_PLUGIN_H
+
+#include "editor/plugins/node_3d_editor_gizmos.h"
+
+class Camera3DGizmoPlugin : public EditorNode3DGizmoPlugin {
+	GDCLASS(Camera3DGizmoPlugin, EditorNode3DGizmoPlugin);
+
+private:
+	static float _find_closest_angle_to_half_pi_arc(const Vector3 &p_from, const Vector3 &p_to, float p_arc_radius, const Transform3D &p_arc_xform);
+
+public:
+	bool has_gizmo(Node3D *p_spatial) override;
+	String get_gizmo_name() const override;
+	int get_priority() const override;
+
+	String get_handle_name(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const override;
+	Variant get_handle_value(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const override;
+	void set_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, Camera3D *p_camera, const Point2 &p_point) override;
+	void commit_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, const Variant &p_restore, bool p_cancel = false) override;
+	void redraw(EditorNode3DGizmo *p_gizmo) override;
+
+	Camera3DGizmoPlugin();
+};
+
+#endif // CAMERA_3D_GIZMO_PLUGIN_H

engine/editor/plugins/gizmos/collision_object_3d_gizmo_plugin.cpp

@@ -0,0 +1,84 @@
+/**************************************************************************/
+/*  collision_object_3d_gizmo_plugin.cpp                                  */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#include "collision_object_3d_gizmo_plugin.h"
+
+#include "scene/3d/physics/collision_object_3d.h"
+#include "scene/3d/physics/collision_polygon_3d.h"
+#include "scene/3d/physics/collision_shape_3d.h"
+#include "scene/resources/surface_tool.h"
+
+CollisionObject3DGizmoPlugin::CollisionObject3DGizmoPlugin() {
+	const Color gizmo_color = SceneTree::get_singleton()->get_debug_collisions_color();
+	create_material("shape_material", gizmo_color);
+	const float gizmo_value = gizmo_color.get_v();
+	const Color gizmo_color_disabled = Color(gizmo_value, gizmo_value, gizmo_value, 0.65);
+	create_material("shape_material_disabled", gizmo_color_disabled);
+}
+
+bool CollisionObject3DGizmoPlugin::has_gizmo(Node3D *p_spatial) {
+	return Object::cast_to<CollisionObject3D>(p_spatial) != nullptr;
+}
+
+String CollisionObject3DGizmoPlugin::get_gizmo_name() const {
+	return "CollisionObject3D";
+}
+
+int CollisionObject3DGizmoPlugin::get_priority() const {
+	return -2;
+}
+
+void CollisionObject3DGizmoPlugin::redraw(EditorNode3DGizmo *p_gizmo) {
+	CollisionObject3D *co = Object::cast_to<CollisionObject3D>(p_gizmo->get_node_3d());
+
+	p_gizmo->clear();
+
+	List<uint32_t> owner_ids;
+	co->get_shape_owners(&owner_ids);
+	for (uint32_t &owner_id : owner_ids) {
+		Transform3D xform = co->shape_owner_get_transform(owner_id);
+		Object *owner = co->shape_owner_get_owner(owner_id);
+		// Exclude CollisionShape3D and CollisionPolygon3D as they have their gizmo.
+		if (!Object::cast_to<CollisionShape3D>(owner) && !Object::cast_to<CollisionPolygon3D>(owner)) {
+			Ref<Material> material = get_material(!co->is_shape_owner_disabled(owner_id) ? "shape_material" : "shape_material_disabled", p_gizmo);
+			for (int shape_id = 0; shape_id < co->shape_owner_get_shape_count(owner_id); shape_id++) {
+				Ref<Shape3D> s = co->shape_owner_get_shape(owner_id, shape_id);
+				if (s.is_null()) {
+					continue;
+				}
+				SurfaceTool st;
+				st.append_from(s->get_debug_mesh(), 0, xform);
+
+				p_gizmo->add_mesh(st.commit(), material);
+				p_gizmo->add_collision_segments(s->get_debug_mesh_lines());
+			}
+		}
+	}
+}

engine/editor/plugins/gizmos/collision_object_3d_gizmo_plugin.h

@@ -0,0 +1,48 @@
+/**************************************************************************/
+/*  collision_object_3d_gizmo_plugin.h                                    */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef COLLISION_OBJECT_3D_GIZMO_PLUGIN_H
+#define COLLISION_OBJECT_3D_GIZMO_PLUGIN_H
+
+#include "editor/plugins/node_3d_editor_gizmos.h"
+
+class CollisionObject3DGizmoPlugin : public EditorNode3DGizmoPlugin {
+	GDCLASS(CollisionObject3DGizmoPlugin, EditorNode3DGizmoPlugin);
+
+public:
+	bool has_gizmo(Node3D *p_spatial) override;
+	String get_gizmo_name() const override;
+	int get_priority() const override;
+	void redraw(EditorNode3DGizmo *p_gizmo) override;
+
+	CollisionObject3DGizmoPlugin();
+};
+
+#endif // COLLISION_OBJECT_3D_GIZMO_PLUGIN_H

engine/editor/plugins/gizmos/collision_polygon_3d_gizmo_plugin.cpp

@@ -0,0 +1,232 @@
+/**************************************************************************/
+/*  collision_polygon_3d_gizmo_plugin.cpp                                 */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#include "collision_polygon_3d_gizmo_plugin.h"
+
+#include "core/math/geometry_2d.h"
+#include "scene/3d/physics/collision_polygon_3d.h"
+
+CollisionPolygon3DGizmoPlugin::CollisionPolygon3DGizmoPlugin() {
+	create_collision_material("shape_material", 2.0);
+	create_collision_material("shape_material_arraymesh", 0.0625);
+
+	create_collision_material("shape_material_disabled", 0.0625);
+	create_collision_material("shape_material_arraymesh_disabled", 0.015625);
+}
+
+void CollisionPolygon3DGizmoPlugin::create_collision_material(const String &p_name, float p_alpha) {
+	Vector<Ref<StandardMaterial3D>> mats;
+
+	const Color collision_color(1.0, 1.0, 1.0, p_alpha);
+
+	for (int i = 0; i < 4; i++) {
+		bool instantiated = i < 2;
+
+		Ref<StandardMaterial3D> material;
+		material.instantiate();
+
+		Color color = collision_color;
+		color.a *= instantiated ? 0.25 : 1.0;
+
+		material->set_albedo(color);
+		material->set_shading_mode(StandardMaterial3D::SHADING_MODE_UNSHADED);
+		material->set_transparency(StandardMaterial3D::TRANSPARENCY_ALPHA);
+		material->set_render_priority(StandardMaterial3D::RENDER_PRIORITY_MIN + 1);
+		material->set_cull_mode(StandardMaterial3D::CULL_BACK);
+		material->set_flag(StandardMaterial3D::FLAG_DISABLE_FOG, true);
+		material->set_flag(StandardMaterial3D::FLAG_ALBEDO_FROM_VERTEX_COLOR, true);
+		material->set_flag(StandardMaterial3D::FLAG_SRGB_VERTEX_COLOR, true);
+
+		mats.push_back(material);
+	}
+
+	materials[p_name] = mats;
+}
+
+bool CollisionPolygon3DGizmoPlugin::has_gizmo(Node3D *p_spatial) {
+	return Object::cast_to<CollisionPolygon3D>(p_spatial) != nullptr;
+}
+
+String CollisionPolygon3DGizmoPlugin::get_gizmo_name() const {
+	return "CollisionPolygon3D";
+}
+
+int CollisionPolygon3DGizmoPlugin::get_priority() const {
+	return -1;
+}
+
+void CollisionPolygon3DGizmoPlugin::redraw(EditorNode3DGizmo *p_gizmo) {
+	CollisionPolygon3D *polygon = Object::cast_to<CollisionPolygon3D>(p_gizmo->get_node_3d());
+
+	p_gizmo->clear();
+
+	const Ref<StandardMaterial3D> material =
+			get_material(!polygon->is_disabled() ? "shape_material" : "shape_material_disabled", p_gizmo);
+	const Ref<StandardMaterial3D> material_arraymesh =
+			get_material(!polygon->is_disabled() ? "shape_material_arraymesh" : "shape_material_arraymesh_disabled", p_gizmo);
+
+	const Color collision_color = polygon->is_disabled() ? Color(1.0, 1.0, 1.0, 0.75) : polygon->get_debug_color();
+
+	Vector<Vector2> points = polygon->get_polygon();
+	float depth = polygon->get_depth() * 0.5;
+
+	Vector<Vector3> lines;
+	for (int i = 0; i < points.size(); i++) {
+		int n = (i + 1) % points.size();
+		lines.push_back(Vector3(points[i].x, points[i].y, depth));
+		lines.push_back(Vector3(points[n].x, points[n].y, depth));
+		lines.push_back(Vector3(points[i].x, points[i].y, -depth));
+		lines.push_back(Vector3(points[n].x, points[n].y, -depth));
+		lines.push_back(Vector3(points[i].x, points[i].y, depth));
+		lines.push_back(Vector3(points[i].x, points[i].y, -depth));
+	}
+
+	if (polygon->get_debug_fill_enabled()) {
+		Ref<ArrayMesh> array_mesh;
+		array_mesh.instantiate();
+
+		Vector<Vector3> verts;
+		Vector<Color> colors;
+		Vector<int> indices;
+
+		// Determine orientation of the 2D polygon's vertices to determine
+		// which direction to draw outer polygons.
+		float signed_area = 0.0f;
+		for (int i = 0; i < points.size(); i++) {
+			const int j = (i + 1) % points.size();
+			signed_area += points[i].x * points[j].y - points[j].x * points[i].y;
+		}
+
+		// Generate triangles for the sides of the extruded polygon.
+		for (int i = 0; i < points.size(); i++) {
+			verts.push_back(Vector3(points[i].x, points[i].y, depth));
+			verts.push_back(Vector3(points[i].x, points[i].y, -depth));
+
+			colors.push_back(collision_color);
+			colors.push_back(collision_color);
+		}
+
+		for (int i = 0; i < verts.size(); i += 2) {
+			const int j = (i + 1) % verts.size();
+			const int k = (i + 2) % verts.size();
+			const int l = (i + 3) % verts.size();
+
+			indices.push_back(i);
+			if (signed_area < 0) {
+				indices.push_back(j);
+				indices.push_back(k);
+			} else {
+				indices.push_back(k);
+				indices.push_back(j);
+			}
+
+			indices.push_back(j);
+			if (signed_area < 0) {
+				indices.push_back(l);
+				indices.push_back(k);
+			} else {
+				indices.push_back(k);
+				indices.push_back(l);
+			}
+		}
+
+		Vector<Vector<Vector2>> decomp = Geometry2D::decompose_polygon_in_convex(polygon->get_polygon());
+
+		// Generate triangles for the bottom cap of the extruded polygon.
+		for (int i = 0; i < decomp.size(); i++) {
+			Vector<Vector3> cap_verts_bottom;
+			Vector<Color> cap_colours_bottom;
+			Vector<int> cap_indices_bottom;
+
+			const int index_offset = verts.size();
+
+			const Vector<Vector2> &convex = decomp[i];
+
+			for (int j = 0; j < convex.size(); j++) {
+				cap_verts_bottom.push_back(Vector3(convex[j].x, convex[j].y, -depth));
+				cap_colours_bottom.push_back(collision_color);
+			}
+
+			if (convex.size() >= 3) {
+				for (int j = 1; j < convex.size(); j++) {
+					const int k = (j + 1) % convex.size();
+
+					cap_indices_bottom.push_back(index_offset + 0);
+					cap_indices_bottom.push_back(index_offset + j);
+					cap_indices_bottom.push_back(index_offset + k);
+				}
+			}
+			verts.append_array(cap_verts_bottom);
+			colors.append_array(cap_colours_bottom);
+			indices.append_array(cap_indices_bottom);
+		}
+
+		// Generate triangles for the top cap of the extruded polygon.
+		for (int i = 0; i < decomp.size(); i++) {
+			Vector<Vector3> cap_verts_top;
+			Vector<Color> cap_colours_top;
+			Vector<int> cap_indices_top;
+
+			const int index_offset = verts.size();
+
+			const Vector<Vector2> &convex = decomp[i];
+
+			for (int j = 0; j < convex.size(); j++) {
+				cap_verts_top.push_back(Vector3(convex[j].x, convex[j].y, depth));
+				cap_colours_top.push_back(collision_color);
+			}
+
+			if (convex.size() >= 3) {
+				for (int j = 1; j < convex.size(); j++) {
+					const int k = (j + 1) % convex.size();
+
+					cap_indices_top.push_back(index_offset + k);
+					cap_indices_top.push_back(index_offset + j);
+					cap_indices_top.push_back(index_offset + 0);
+				}
+			}
+			verts.append_array(cap_verts_top);
+			colors.append_array(cap_colours_top);
+			indices.append_array(cap_indices_top);
+		}
+
+		Array a;
+		a.resize(Mesh::ARRAY_MAX);
+		a[RS::ARRAY_VERTEX] = verts;
+		a[RS::ARRAY_COLOR] = colors;
+		a[RS::ARRAY_INDEX] = indices;
+		array_mesh->add_surface_from_arrays(Mesh::PRIMITIVE_TRIANGLES, a);
+
+		p_gizmo->add_mesh(array_mesh, material_arraymesh);
+	}
+
+	p_gizmo->add_lines(lines, material, false, collision_color);
+	p_gizmo->add_collision_segments(lines);
+}

engine/editor/plugins/gizmos/collision_polygon_3d_gizmo_plugin.h

@@ -0,0 +1,49 @@
+/**************************************************************************/
+/*  collision_polygon_3d_gizmo_plugin.h                                   */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef COLLISION_POLYGON_3D_GIZMO_PLUGIN_H
+#define COLLISION_POLYGON_3D_GIZMO_PLUGIN_H
+
+#include "editor/plugins/node_3d_editor_gizmos.h"
+
+class CollisionPolygon3DGizmoPlugin : public EditorNode3DGizmoPlugin {
+	GDCLASS(CollisionPolygon3DGizmoPlugin, EditorNode3DGizmoPlugin);
+
+	void create_collision_material(const String &p_name, float p_alpha);
+
+public:
+	bool has_gizmo(Node3D *p_spatial) override;
+	String get_gizmo_name() const override;
+	int get_priority() const override;
+	void redraw(EditorNode3DGizmo *p_gizmo) override;
+	CollisionPolygon3DGizmoPlugin();
+};
+
+#endif // COLLISION_POLYGON_3D_GIZMO_PLUGIN_H

engine/editor/plugins/gizmos/collision_shape_3d_gizmo_plugin.cpp

@@ -0,0 +1,625 @@
+/**************************************************************************/
+/*  collision_shape_3d_gizmo_plugin.cpp                                   */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#include "collision_shape_3d_gizmo_plugin.h"
+
+#include "core/math/convex_hull.h"
+#include "core/math/geometry_3d.h"
+#include "editor/editor_undo_redo_manager.h"
+#include "editor/plugins/gizmos/gizmo_3d_helper.h"
+#include "editor/plugins/node_3d_editor_plugin.h"
+#include "scene/3d/physics/collision_shape_3d.h"
+#include "scene/resources/3d/box_shape_3d.h"
+#include "scene/resources/3d/capsule_shape_3d.h"
+#include "scene/resources/3d/concave_polygon_shape_3d.h"
+#include "scene/resources/3d/convex_polygon_shape_3d.h"
+#include "scene/resources/3d/cylinder_shape_3d.h"
+#include "scene/resources/3d/height_map_shape_3d.h"
+#include "scene/resources/3d/separation_ray_shape_3d.h"
+#include "scene/resources/3d/sphere_shape_3d.h"
+#include "scene/resources/3d/world_boundary_shape_3d.h"
+
+CollisionShape3DGizmoPlugin::CollisionShape3DGizmoPlugin() {
+	helper.instantiate();
+
+	create_collision_material("shape_material", 2.0);
+	create_collision_material("shape_material_arraymesh", 0.0625);
+
+	create_collision_material("shape_material_disabled", 0.0625);
+	create_collision_material("shape_material_arraymesh_disabled", 0.015625);
+
+	create_handle_material("handles");
+}
+
+CollisionShape3DGizmoPlugin::~CollisionShape3DGizmoPlugin() {
+}
+
+void CollisionShape3DGizmoPlugin::create_collision_material(const String &p_name, float p_alpha) {
+	Vector<Ref<StandardMaterial3D>> mats;
+
+	const Color collision_color(1.0, 1.0, 1.0, p_alpha);
+
+	for (int i = 0; i < 4; i++) {
+		bool instantiated = i < 2;
+
+		Ref<StandardMaterial3D> material = memnew(StandardMaterial3D);
+
+		Color color = collision_color;
+		color.a *= instantiated ? 0.25 : 1.0;
+
+		material->set_albedo(color);
+		material->set_shading_mode(StandardMaterial3D::SHADING_MODE_UNSHADED);
+		material->set_transparency(StandardMaterial3D::TRANSPARENCY_ALPHA);
+		material->set_render_priority(StandardMaterial3D::RENDER_PRIORITY_MIN + 1);
+		material->set_cull_mode(StandardMaterial3D::CULL_BACK);
+		material->set_flag(StandardMaterial3D::FLAG_DISABLE_FOG, true);
+		material->set_flag(StandardMaterial3D::FLAG_ALBEDO_FROM_VERTEX_COLOR, true);
+		material->set_flag(StandardMaterial3D::FLAG_SRGB_VERTEX_COLOR, true);
+
+		mats.push_back(material);
+	}
+
+	materials[p_name] = mats;
+}
+
+bool CollisionShape3DGizmoPlugin::has_gizmo(Node3D *p_spatial) {
+	return Object::cast_to<CollisionShape3D>(p_spatial) != nullptr;
+}
+
+String CollisionShape3DGizmoPlugin::get_gizmo_name() const {
+	return "CollisionShape3D";
+}
+
+int CollisionShape3DGizmoPlugin::get_priority() const {
+	return -1;
+}
+
+String CollisionShape3DGizmoPlugin::get_handle_name(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const {
+	const CollisionShape3D *cs = Object::cast_to<CollisionShape3D>(p_gizmo->get_node_3d());
+
+	Ref<Shape3D> s = cs->get_shape();
+	if (s.is_null()) {
+		return "";
+	}
+
+	if (Object::cast_to<SphereShape3D>(*s)) {
+		return "Radius";
+	}
+
+	if (Object::cast_to<BoxShape3D>(*s)) {
+		return helper->box_get_handle_name(p_id);
+	}
+
+	if (Object::cast_to<CapsuleShape3D>(*s)) {
+		return p_id == 0 ? "Radius" : "Height";
+	}
+
+	if (Object::cast_to<CylinderShape3D>(*s)) {
+		return helper->cylinder_get_handle_name(p_id);
+	}
+
+	if (Object::cast_to<SeparationRayShape3D>(*s)) {
+		return "Length";
+	}
+
+	return "";
+}
+
+Variant CollisionShape3DGizmoPlugin::get_handle_value(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const {
+	CollisionShape3D *cs = Object::cast_to<CollisionShape3D>(p_gizmo->get_node_3d());
+
+	Ref<Shape3D> s = cs->get_shape();
+	if (s.is_null()) {
+		return Variant();
+	}
+
+	if (Object::cast_to<SphereShape3D>(*s)) {
+		Ref<SphereShape3D> ss = s;
+		return ss->get_radius();
+	}
+
+	if (Object::cast_to<BoxShape3D>(*s)) {
+		Ref<BoxShape3D> bs = s;
+		return bs->get_size();
+	}
+
+	if (Object::cast_to<CapsuleShape3D>(*s)) {
+		Ref<CapsuleShape3D> cs2 = s;
+		return Vector2(cs2->get_radius(), cs2->get_height());
+	}
+
+	if (Object::cast_to<CylinderShape3D>(*s)) {
+		Ref<CylinderShape3D> cs2 = s;
+		return p_id == 0 ? cs2->get_radius() : cs2->get_height();
+	}
+
+	if (Object::cast_to<SeparationRayShape3D>(*s)) {
+		Ref<SeparationRayShape3D> cs2 = s;
+		return cs2->get_length();
+	}
+
+	return Variant();
+}
+
+void CollisionShape3DGizmoPlugin::begin_handle_action(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) {
+	helper->initialize_handle_action(get_handle_value(p_gizmo, p_id, p_secondary), p_gizmo->get_node_3d()->get_global_transform());
+}
+
+void CollisionShape3DGizmoPlugin::set_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, Camera3D *p_camera, const Point2 &p_point) {
+	CollisionShape3D *cs = Object::cast_to<CollisionShape3D>(p_gizmo->get_node_3d());
+
+	Ref<Shape3D> s = cs->get_shape();
+	if (s.is_null()) {
+		return;
+	}
+
+	Vector3 sg[2];
+	helper->get_segment(p_camera, p_point, sg);
+
+	if (Object::cast_to<SphereShape3D>(*s)) {
+		Ref<SphereShape3D> ss = s;
+		Vector3 ra, rb;
+		Geometry3D::get_closest_points_between_segments(Vector3(), Vector3(4096, 0, 0), sg[0], sg[1], ra, rb);
+		float d = ra.x;
+		if (Node3DEditor::get_singleton()->is_snap_enabled()) {
+			d = Math::snapped(d, Node3DEditor::get_singleton()->get_translate_snap());
+		}
+
+		if (d < 0.001) {
+			d = 0.001;
+		}
+
+		ss->set_radius(d);
+	}
+
+	if (Object::cast_to<SeparationRayShape3D>(*s)) {
+		Ref<SeparationRayShape3D> rs = s;
+		Vector3 ra, rb;
+		Geometry3D::get_closest_points_between_segments(Vector3(), Vector3(0, 0, 4096), sg[0], sg[1], ra, rb);
+		float d = ra.z;
+		if (Node3DEditor::get_singleton()->is_snap_enabled()) {
+			d = Math::snapped(d, Node3DEditor::get_singleton()->get_translate_snap());
+		}
+
+		if (d < 0.001) {
+			d = 0.001;
+		}
+
+		rs->set_length(d);
+	}
+
+	if (Object::cast_to<BoxShape3D>(*s)) {
+		Ref<BoxShape3D> bs = s;
+		Vector3 size = bs->get_size();
+		Vector3 position;
+		helper->box_set_handle(sg, p_id, size, position);
+		bs->set_size(size);
+		cs->set_global_position(position);
+	}
+
+	if (Object::cast_to<CapsuleShape3D>(*s)) {
+		Vector3 axis;
+		axis[p_id == 0 ? 0 : 1] = 1.0;
+		Ref<CapsuleShape3D> cs2 = s;
+		Vector3 ra, rb;
+		Geometry3D::get_closest_points_between_segments(Vector3(), axis * 4096, sg[0], sg[1], ra, rb);
+		float d = axis.dot(ra);
+
+		if (Node3DEditor::get_singleton()->is_snap_enabled()) {
+			d = Math::snapped(d, Node3DEditor::get_singleton()->get_translate_snap());
+		}
+
+		if (d < 0.001) {
+			d = 0.001;
+		}
+
+		if (p_id == 0) {
+			cs2->set_radius(d);
+		} else if (p_id == 1) {
+			cs2->set_height(d * 2.0);
+		}
+	}
+
+	if (Object::cast_to<CylinderShape3D>(*s)) {
+		Ref<CylinderShape3D> cs2 = s;
+
+		real_t height = cs2->get_height();
+		real_t radius = cs2->get_radius();
+		Vector3 position;
+		helper->cylinder_set_handle(sg, p_id, height, radius, position);
+		cs2->set_height(height);
+		cs2->set_radius(radius);
+		cs->set_global_position(position);
+	}
+}
+
+void CollisionShape3DGizmoPlugin::commit_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, const Variant &p_restore, bool p_cancel) {
+	CollisionShape3D *cs = Object::cast_to<CollisionShape3D>(p_gizmo->get_node_3d());
+
+	Ref<Shape3D> s = cs->get_shape();
+	if (s.is_null()) {
+		return;
+	}
+
+	if (Object::cast_to<SphereShape3D>(*s)) {
+		Ref<SphereShape3D> ss = s;
+		if (p_cancel) {
+			ss->set_radius(p_restore);
+			return;
+		}
+
+		EditorUndoRedoManager *ur = EditorUndoRedoManager::get_singleton();
+		ur->create_action(TTR("Change Sphere Shape Radius"));
+		ur->add_do_method(ss.ptr(), "set_radius", ss->get_radius());
+		ur->add_undo_method(ss.ptr(), "set_radius", p_restore);
+		ur->commit_action();
+	}
+
+	if (Object::cast_to<BoxShape3D>(*s)) {
+		helper->box_commit_handle(TTR("Change Box Shape Size"), p_cancel, cs, s.ptr());
+	}
+
+	if (Object::cast_to<CapsuleShape3D>(*s)) {
+		Ref<CapsuleShape3D> ss = s;
+		Vector2 values = p_restore;
+
+		if (p_cancel) {
+			ss->set_radius(values[0]);
+			ss->set_height(values[1]);
+			return;
+		}
+
+		EditorUndoRedoManager *ur = EditorUndoRedoManager::get_singleton();
+		if (p_id == 0) {
+			ur->create_action(TTR("Change Capsule Shape Radius"));
+			ur->add_do_method(ss.ptr(), "set_radius", ss->get_radius());
+		} else {
+			ur->create_action(TTR("Change Capsule Shape Height"));
+			ur->add_do_method(ss.ptr(), "set_height", ss->get_height());
+		}
+		ur->add_undo_method(ss.ptr(), "set_radius", values[0]);
+		ur->add_undo_method(ss.ptr(), "set_height", values[1]);
+
+		ur->commit_action();
+	}
+
+	if (Object::cast_to<CylinderShape3D>(*s)) {
+		Ref<CylinderShape3D> ss = s;
+		helper->cylinder_commit_handle(p_id, TTR("Change Cylinder Shape Radius"), TTR("Change Cylinder Shape Height"), p_cancel, cs, *ss, *ss);
+	}
+
+	if (Object::cast_to<SeparationRayShape3D>(*s)) {
+		Ref<SeparationRayShape3D> ss = s;
+		if (p_cancel) {
+			ss->set_length(p_restore);
+			return;
+		}
+
+		EditorUndoRedoManager *ur = EditorUndoRedoManager::get_singleton();
+		ur->create_action(TTR("Change Separation Ray Shape Length"));
+		ur->add_do_method(ss.ptr(), "set_length", ss->get_length());
+		ur->add_undo_method(ss.ptr(), "set_length", p_restore);
+		ur->commit_action();
+	}
+}
+
+void CollisionShape3DGizmoPlugin::redraw(EditorNode3DGizmo *p_gizmo) {
+	CollisionShape3D *cs = Object::cast_to<CollisionShape3D>(p_gizmo->get_node_3d());
+
+	p_gizmo->clear();
+
+	Ref<Shape3D> s = cs->get_shape();
+	if (s.is_null()) {
+		return;
+	}
+
+	const Ref<StandardMaterial3D> material =
+			get_material(!cs->is_disabled() ? "shape_material" : "shape_material_disabled", p_gizmo);
+	const Ref<StandardMaterial3D> material_arraymesh =
+			get_material(!cs->is_disabled() ? "shape_material_arraymesh" : "shape_material_arraymesh_disabled", p_gizmo);
+	const Ref<Material> handles_material = get_material("handles");
+
+	const Color collision_color = cs->is_disabled() ? Color(1.0, 1.0, 1.0, 0.75) : cs->get_debug_color();
+
+	if (cs->get_debug_fill_enabled()) {
+		Ref<ArrayMesh> array_mesh = s->get_debug_arraymesh_faces(collision_color);
+		if (array_mesh.is_valid() && array_mesh->get_surface_count() > 0) {
+			p_gizmo->add_mesh(array_mesh, material_arraymesh);
+		}
+	}
+
+	if (Object::cast_to<SphereShape3D>(*s)) {
+		Ref<SphereShape3D> sp = s;
+		float r = sp->get_radius();
+
+		Vector<Vector3> points;
+
+		for (int i = 0; i <= 360; i++) {
+			float ra = Math::deg_to_rad((float)i);
+			float rb = Math::deg_to_rad((float)i + 1);
+			Point2 a = Vector2(Math::sin(ra), Math::cos(ra)) * r;
+			Point2 b = Vector2(Math::sin(rb), Math::cos(rb)) * r;
+
+			points.push_back(Vector3(a.x, 0, a.y));
+			points.push_back(Vector3(b.x, 0, b.y));
+			points.push_back(Vector3(0, a.x, a.y));
+			points.push_back(Vector3(0, b.x, b.y));
+			points.push_back(Vector3(a.x, a.y, 0));
+			points.push_back(Vector3(b.x, b.y, 0));
+		}
+
+		Vector<Vector3> collision_segments;
+
+		for (int i = 0; i < 64; i++) {
+			float ra = i * (Math_TAU / 64.0);
+			float rb = (i + 1) * (Math_TAU / 64.0);
+			Point2 a = Vector2(Math::sin(ra), Math::cos(ra)) * r;
+			Point2 b = Vector2(Math::sin(rb), Math::cos(rb)) * r;
+
+			collision_segments.push_back(Vector3(a.x, 0, a.y));
+			collision_segments.push_back(Vector3(b.x, 0, b.y));
+			collision_segments.push_back(Vector3(0, a.x, a.y));
+			collision_segments.push_back(Vector3(0, b.x, b.y));
+			collision_segments.push_back(Vector3(a.x, a.y, 0));
+			collision_segments.push_back(Vector3(b.x, b.y, 0));
+		}
+
+		p_gizmo->add_lines(points, material, false, collision_color);
+		p_gizmo->add_collision_segments(collision_segments);
+		Vector<Vector3> handles;
+		handles.push_back(Vector3(r, 0, 0));
+		p_gizmo->add_handles(handles, handles_material);
+	}
+
+	if (Object::cast_to<BoxShape3D>(*s)) {
+		Ref<BoxShape3D> bs = s;
+		Vector<Vector3> lines;
+		AABB aabb;
+		aabb.position = -bs->get_size() / 2;
+		aabb.size = bs->get_size();
+
+		for (int i = 0; i < 12; i++) {
+			Vector3 a, b;
+			aabb.get_edge(i, a, b);
+			lines.push_back(a);
+			lines.push_back(b);
+		}
+
+		const Vector<Vector3> handles = helper->box_get_handles(bs->get_size());
+
+		p_gizmo->add_lines(lines, material, false, collision_color);
+		p_gizmo->add_collision_segments(lines);
+		p_gizmo->add_handles(handles, handles_material);
+	}
+
+	if (Object::cast_to<CapsuleShape3D>(*s)) {
+		Ref<CapsuleShape3D> cs2 = s;
+		float radius = cs2->get_radius();
+		float height = cs2->get_height();
+
+		Vector<Vector3> points;
+
+		Vector3 d(0, height * 0.5 - radius, 0);
+		for (int i = 0; i < 360; i++) {
+			float ra = Math::deg_to_rad((float)i);
+			float rb = Math::deg_to_rad((float)i + 1);
+			Point2 a = Vector2(Math::sin(ra), Math::cos(ra)) * radius;
+			Point2 b = Vector2(Math::sin(rb), Math::cos(rb)) * radius;
+
+			points.push_back(Vector3(a.x, 0, a.y) + d);
+			points.push_back(Vector3(b.x, 0, b.y) + d);
+
+			points.push_back(Vector3(a.x, 0, a.y) - d);
+			points.push_back(Vector3(b.x, 0, b.y) - d);
+
+			if (i % 90 == 0) {
+				points.push_back(Vector3(a.x, 0, a.y) + d);
+				points.push_back(Vector3(a.x, 0, a.y) - d);
+			}
+
+			Vector3 dud = i < 180 ? d : -d;
+
+			points.push_back(Vector3(0, a.x, a.y) + dud);
+			points.push_back(Vector3(0, b.x, b.y) + dud);
+			points.push_back(Vector3(a.y, a.x, 0) + dud);
+			points.push_back(Vector3(b.y, b.x, 0) + dud);
+		}
+
+		p_gizmo->add_lines(points, material, false, collision_color);
+
+		Vector<Vector3> collision_segments;
+
+		for (int i = 0; i < 64; i++) {
+			float ra = i * (Math_TAU / 64.0);
+			float rb = (i + 1) * (Math_TAU / 64.0);
+			Point2 a = Vector2(Math::sin(ra), Math::cos(ra)) * radius;
+			Point2 b = Vector2(Math::sin(rb), Math::cos(rb)) * radius;
+
+			collision_segments.push_back(Vector3(a.x, 0, a.y) + d);
+			collision_segments.push_back(Vector3(b.x, 0, b.y) + d);
+
+			collision_segments.push_back(Vector3(a.x, 0, a.y) - d);
+			collision_segments.push_back(Vector3(b.x, 0, b.y) - d);
+
+			if (i % 16 == 0) {
+				collision_segments.push_back(Vector3(a.x, 0, a.y) + d);
+				collision_segments.push_back(Vector3(a.x, 0, a.y) - d);
+			}
+
+			Vector3 dud = i < 32 ? d : -d;
+
+			collision_segments.push_back(Vector3(0, a.x, a.y) + dud);
+			collision_segments.push_back(Vector3(0, b.x, b.y) + dud);
+			collision_segments.push_back(Vector3(a.y, a.x, 0) + dud);
+			collision_segments.push_back(Vector3(b.y, b.x, 0) + dud);
+		}
+
+		p_gizmo->add_collision_segments(collision_segments);
+
+		Vector<Vector3> handles = {
+			Vector3(cs2->get_radius(), 0, 0),
+			Vector3(0, cs2->get_height() * 0.5, 0)
+		};
+		p_gizmo->add_handles(handles, handles_material);
+	}
+
+	if (Object::cast_to<CylinderShape3D>(*s)) {
+		Ref<CylinderShape3D> cs2 = s;
+		float radius = cs2->get_radius();
+		float height = cs2->get_height();
+
+		Vector<Vector3> points;
+
+		Vector3 d(0, height * 0.5, 0);
+		for (int i = 0; i < 360; i++) {
+			float ra = Math::deg_to_rad((float)i);
+			float rb = Math::deg_to_rad((float)i + 1);
+			Point2 a = Vector2(Math::sin(ra), Math::cos(ra)) * radius;
+			Point2 b = Vector2(Math::sin(rb), Math::cos(rb)) * radius;
+
+			points.push_back(Vector3(a.x, 0, a.y) + d);
+			points.push_back(Vector3(b.x, 0, b.y) + d);
+
+			points.push_back(Vector3(a.x, 0, a.y) - d);
+			points.push_back(Vector3(b.x, 0, b.y) - d);
+
+			if (i % 90 == 0) {
+				points.push_back(Vector3(a.x, 0, a.y) + d);
+				points.push_back(Vector3(a.x, 0, a.y) - d);
+			}
+		}
+
+		p_gizmo->add_lines(points, material, false, collision_color);
+
+		Vector<Vector3> collision_segments;
+
+		for (int i = 0; i < 64; i++) {
+			float ra = i * (Math_TAU / 64.0);
+			float rb = (i + 1) * (Math_TAU / 64.0);
+			Point2 a = Vector2(Math::sin(ra), Math::cos(ra)) * radius;
+			Point2 b = Vector2(Math::sin(rb), Math::cos(rb)) * radius;
+
+			collision_segments.push_back(Vector3(a.x, 0, a.y) + d);
+			collision_segments.push_back(Vector3(b.x, 0, b.y) + d);
+
+			collision_segments.push_back(Vector3(a.x, 0, a.y) - d);
+			collision_segments.push_back(Vector3(b.x, 0, b.y) - d);
+
+			if (i % 16 == 0) {
+				collision_segments.push_back(Vector3(a.x, 0, a.y) + d);
+				collision_segments.push_back(Vector3(a.x, 0, a.y) - d);
+			}
+		}
+
+		p_gizmo->add_collision_segments(collision_segments);
+
+		Vector<Vector3> handles = helper->cylinder_get_handles(cs2->get_height(), cs2->get_radius());
+		p_gizmo->add_handles(handles, handles_material);
+	}
+
+	if (Object::cast_to<WorldBoundaryShape3D>(*s)) {
+		Ref<WorldBoundaryShape3D> wbs = s;
+		const Plane &p = wbs->get_plane();
+
+		Vector3 n1 = p.get_any_perpendicular_normal();
+		Vector3 n2 = p.normal.cross(n1).normalized();
+
+		Vector3 pface[4] = {
+			p.normal * p.d + n1 * 10.0 + n2 * 10.0,
+			p.normal * p.d + n1 * 10.0 + n2 * -10.0,
+			p.normal * p.d + n1 * -10.0 + n2 * -10.0,
+			p.normal * p.d + n1 * -10.0 + n2 * 10.0,
+		};
+
+		Vector<Vector3> points = {
+			pface[0],
+			pface[1],
+			pface[1],
+			pface[2],
+			pface[2],
+			pface[3],
+			pface[3],
+			pface[0],
+			p.normal * p.d,
+			p.normal * p.d + p.normal * 3
+		};
+
+		p_gizmo->add_lines(points, material, false, collision_color);
+		p_gizmo->add_collision_segments(points);
+	}
+
+	if (Object::cast_to<ConvexPolygonShape3D>(*s)) {
+		Vector<Vector3> points = Object::cast_to<ConvexPolygonShape3D>(*s)->get_points();
+
+		if (points.size() > 1) { // Need at least 2 points for a line.
+			Vector<Vector3> varr = Variant(points);
+			Geometry3D::MeshData md;
+			Error err = ConvexHullComputer::convex_hull(varr, md);
+			if (err == OK) {
+				Vector<Vector3> lines;
+				lines.resize(md.edges.size() * 2);
+				for (uint32_t i = 0; i < md.edges.size(); i++) {
+					lines.write[i * 2 + 0] = md.vertices[md.edges[i].vertex_a];
+					lines.write[i * 2 + 1] = md.vertices[md.edges[i].vertex_b];
+				}
+				p_gizmo->add_lines(lines, material, false, collision_color);
+				p_gizmo->add_collision_segments(lines);
+			}
+		}
+	}
+
+	if (Object::cast_to<ConcavePolygonShape3D>(*s)) {
+		Ref<ConcavePolygonShape3D> cs2 = s;
+		Ref<ArrayMesh> mesh = cs2->get_debug_mesh();
+		p_gizmo->add_lines(cs2->get_debug_mesh_lines(), material, false, collision_color);
+		p_gizmo->add_collision_segments(cs2->get_debug_mesh_lines());
+	}
+
+	if (Object::cast_to<SeparationRayShape3D>(*s)) {
+		Ref<SeparationRayShape3D> rs = s;
+
+		Vector<Vector3> points = {
+			Vector3(),
+			Vector3(0, 0, rs->get_length())
+		};
+		p_gizmo->add_lines(points, material, false, collision_color);
+		p_gizmo->add_collision_segments(points);
+		Vector<Vector3> handles;
+		handles.push_back(Vector3(0, 0, rs->get_length()));
+		p_gizmo->add_handles(handles, handles_material);
+	}
+
+	if (Object::cast_to<HeightMapShape3D>(*s)) {
+		Ref<HeightMapShape3D> hms = s;
+
+		Vector<Vector3> lines = hms->get_debug_mesh_lines();
+		p_gizmo->add_lines(lines, material, false, collision_color);
+	}
+}

engine/editor/plugins/gizmos/collision_shape_3d_gizmo_plugin.h

@@ -0,0 +1,61 @@
+/**************************************************************************/
+/*  collision_shape_3d_gizmo_plugin.h                                     */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef COLLISION_SHAPE_3D_GIZMO_PLUGIN_H
+#define COLLISION_SHAPE_3D_GIZMO_PLUGIN_H
+
+#include "editor/plugins/node_3d_editor_gizmos.h"
+
+class Gizmo3DHelper;
+
+class CollisionShape3DGizmoPlugin : public EditorNode3DGizmoPlugin {
+	GDCLASS(CollisionShape3DGizmoPlugin, EditorNode3DGizmoPlugin);
+
+	void create_collision_material(const String &p_name, float p_alpha);
+
+	Ref<Gizmo3DHelper> helper;
+
+public:
+	bool has_gizmo(Node3D *p_spatial) override;
+	String get_gizmo_name() const override;
+	int get_priority() const override;
+	void redraw(EditorNode3DGizmo *p_gizmo) override;
+
+	String get_handle_name(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const override;
+	Variant get_handle_value(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const override;
+	void begin_handle_action(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) override;
+	void set_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, Camera3D *p_camera, const Point2 &p_point) override;
+	void commit_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, const Variant &p_restore, bool p_cancel = false) override;
+
+	CollisionShape3DGizmoPlugin();
+	~CollisionShape3DGizmoPlugin();
+};
+
+#endif // COLLISION_SHAPE_3D_GIZMO_PLUGIN_H

engine/editor/plugins/gizmos/cpu_particles_3d_gizmo_plugin.cpp

@@ -0,0 +1,107 @@
+/**************************************************************************/
+/*  cpu_particles_3d_gizmo_plugin.cpp                                     */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#include "cpu_particles_3d_gizmo_plugin.h"
+
+#include "editor/editor_node.h"
+#include "editor/editor_settings.h"
+#include "editor/editor_string_names.h"
+#include "scene/3d/cpu_particles_3d.h"
+
+CPUParticles3DGizmoPlugin::CPUParticles3DGizmoPlugin() {
+	Color gizmo_color = EDITOR_GET("editors/3d_gizmos/gizmo_colors/particles");
+	create_material("particles_material", gizmo_color);
+	gizmo_color.a = MAX((gizmo_color.a - 0.2) * 0.02, 0.0);
+	create_material("particles_solid_material", gizmo_color);
+	create_icon_material("particles_icon", EditorNode::get_singleton()->get_editor_theme()->get_icon(SNAME("GizmoCPUParticles3D"), EditorStringName(EditorIcons)));
+}
+
+bool CPUParticles3DGizmoPlugin::has_gizmo(Node3D *p_spatial) {
+	return Object::cast_to<CPUParticles3D>(p_spatial) != nullptr;
+}
+
+String CPUParticles3DGizmoPlugin::get_gizmo_name() const {
+	return "CPUParticles3D";
+}
+
+int CPUParticles3DGizmoPlugin::get_priority() const {
+	return -1;
+}
+
+bool CPUParticles3DGizmoPlugin::is_selectable_when_hidden() const {
+	return true;
+}
+
+void CPUParticles3DGizmoPlugin::redraw(EditorNode3DGizmo *p_gizmo) {
+	CPUParticles3D *particles = Object::cast_to<CPUParticles3D>(p_gizmo->get_node_3d());
+
+	p_gizmo->clear();
+
+	Vector<Vector3> lines;
+	AABB aabb = particles->get_visibility_aabb();
+
+	for (int i = 0; i < 12; i++) {
+		Vector3 a, b;
+		aabb.get_edge(i, a, b);
+		lines.push_back(a);
+		lines.push_back(b);
+	}
+
+	Vector<Vector3> handles;
+
+	for (int i = 0; i < 3; i++) {
+		Vector3 ax;
+		ax[i] = aabb.position[i] + aabb.size[i];
+		ax[(i + 1) % 3] = aabb.position[(i + 1) % 3] + aabb.size[(i + 1) % 3] * 0.5;
+		ax[(i + 2) % 3] = aabb.position[(i + 2) % 3] + aabb.size[(i + 2) % 3] * 0.5;
+		handles.push_back(ax);
+	}
+
+	Vector3 center = aabb.get_center();
+	for (int i = 0; i < 3; i++) {
+		Vector3 ax;
+		ax[i] = 1.0;
+		handles.push_back(center + ax);
+		lines.push_back(center);
+		lines.push_back(center + ax);
+	}
+
+	Ref<Material> material = get_material("particles_material", p_gizmo);
+
+	p_gizmo->add_lines(lines, material);
+
+	if (p_gizmo->is_selected()) {
+		Ref<Material> solid_material = get_material("particles_solid_material", p_gizmo);
+		p_gizmo->add_solid_box(solid_material, aabb.get_size(), aabb.get_center());
+	}
+
+	Ref<Material> icon = get_material("particles_icon", p_gizmo);
+	p_gizmo->add_unscaled_billboard(icon, 0.05);
+}

engine/editor/plugins/gizmos/cpu_particles_3d_gizmo_plugin.h

@@ -0,0 +1,48 @@
+/**************************************************************************/
+/*  cpu_particles_3d_gizmo_plugin.h                                       */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef CPU_PARTICLES_3D_GIZMO_PLUGIN_H
+#define CPU_PARTICLES_3D_GIZMO_PLUGIN_H
+
+#include "editor/plugins/node_3d_editor_gizmos.h"
+
+class CPUParticles3DGizmoPlugin : public EditorNode3DGizmoPlugin {
+	GDCLASS(CPUParticles3DGizmoPlugin, EditorNode3DGizmoPlugin);
+
+public:
+	bool has_gizmo(Node3D *p_spatial) override;
+	String get_gizmo_name() const override;
+	int get_priority() const override;
+	bool is_selectable_when_hidden() const override;
+	void redraw(EditorNode3DGizmo *p_gizmo) override;
+	CPUParticles3DGizmoPlugin();
+};
+
+#endif // CPU_PARTICLES_3D_GIZMO_PLUGIN_H

engine/editor/plugins/gizmos/decal_gizmo_plugin.cpp

@@ -0,0 +1,134 @@
+/**************************************************************************/
+/*  decal_gizmo_plugin.cpp                                                */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#include "decal_gizmo_plugin.h"
+
+#include "editor/editor_node.h"
+#include "editor/editor_settings.h"
+#include "editor/editor_string_names.h"
+#include "editor/plugins/gizmos/gizmo_3d_helper.h"
+#include "scene/3d/decal.h"
+
+DecalGizmoPlugin::DecalGizmoPlugin() {
+	helper.instantiate();
+	Color gizmo_color = EDITOR_GET("editors/3d_gizmos/gizmo_colors/decal");
+
+	create_icon_material("decal_icon", EditorNode::get_singleton()->get_editor_theme()->get_icon(SNAME("GizmoDecal"), EditorStringName(EditorIcons)));
+
+	create_material("decal_material", gizmo_color);
+
+	create_handle_material("handles");
+}
+
+DecalGizmoPlugin::~DecalGizmoPlugin() {
+}
+
+bool DecalGizmoPlugin::has_gizmo(Node3D *p_spatial) {
+	return Object::cast_to<Decal>(p_spatial) != nullptr;
+}
+
+String DecalGizmoPlugin::get_gizmo_name() const {
+	return "Decal";
+}
+
+int DecalGizmoPlugin::get_priority() const {
+	return -1;
+}
+
+String DecalGizmoPlugin::get_handle_name(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const {
+	return helper->box_get_handle_name(p_id);
+}
+
+Variant DecalGizmoPlugin::get_handle_value(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const {
+	Decal *decal = Object::cast_to<Decal>(p_gizmo->get_node_3d());
+	return decal->get_size();
+}
+
+void DecalGizmoPlugin::begin_handle_action(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) {
+	helper->initialize_handle_action(get_handle_value(p_gizmo, p_id, p_secondary), p_gizmo->get_node_3d()->get_global_transform());
+}
+
+void DecalGizmoPlugin::set_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, Camera3D *p_camera, const Point2 &p_point) {
+	Decal *decal = Object::cast_to<Decal>(p_gizmo->get_node_3d());
+	Vector3 size = decal->get_size();
+
+	Vector3 sg[2];
+	helper->get_segment(p_camera, p_point, sg);
+
+	Vector3 position;
+	helper->box_set_handle(sg, p_id, size, position);
+	decal->set_size(size);
+	decal->set_global_position(position);
+}
+
+void DecalGizmoPlugin::commit_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, const Variant &p_restore, bool p_cancel) {
+	helper->box_commit_handle(TTR("Change Decal Size"), p_cancel, p_gizmo->get_node_3d());
+}
+
+void DecalGizmoPlugin::redraw(EditorNode3DGizmo *p_gizmo) {
+	Decal *decal = Object::cast_to<Decal>(p_gizmo->get_node_3d());
+
+	p_gizmo->clear();
+
+	Vector<Vector3> lines;
+	Vector3 size = decal->get_size();
+
+	AABB aabb;
+	aabb.position = -size / 2;
+	aabb.size = size;
+
+	for (int i = 0; i < 12; i++) {
+		Vector3 a, b;
+		aabb.get_edge(i, a, b);
+		if (a.y == b.y) {
+			lines.push_back(a);
+			lines.push_back(b);
+		} else {
+			Vector3 ah = a.lerp(b, 0.2);
+			lines.push_back(a);
+			lines.push_back(ah);
+			Vector3 bh = b.lerp(a, 0.2);
+			lines.push_back(b);
+			lines.push_back(bh);
+		}
+	}
+
+	float half_size_y = size.y / 2;
+	lines.push_back(Vector3(0, half_size_y, 0));
+	lines.push_back(Vector3(0, half_size_y * 1.2, 0));
+
+	Vector<Vector3> handles = helper->box_get_handles(decal->get_size());
+	Ref<Material> material = get_material("decal_material", p_gizmo);
+	const Ref<Material> icon = get_material("decal_icon", p_gizmo);
+
+	p_gizmo->add_lines(lines, material);
+	p_gizmo->add_unscaled_billboard(icon, 0.05);
+	p_gizmo->add_handles(handles, get_material("handles"));
+}

engine/editor/plugins/gizmos/decal_gizmo_plugin.h

@@ -0,0 +1,59 @@
+/**************************************************************************/
+/*  decal_gizmo_plugin.h                                                  */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef DECAL_GIZMO_PLUGIN_H
+#define DECAL_GIZMO_PLUGIN_H
+
+#include "editor/plugins/node_3d_editor_gizmos.h"
+
+class Gizmo3DHelper;
+
+class DecalGizmoPlugin : public EditorNode3DGizmoPlugin {
+	GDCLASS(DecalGizmoPlugin, EditorNode3DGizmoPlugin);
+
+	Ref<Gizmo3DHelper> helper;
+
+public:
+	bool has_gizmo(Node3D *p_spatial) override;
+	String get_gizmo_name() const override;
+	int get_priority() const override;
+	void redraw(EditorNode3DGizmo *p_gizmo) override;
+
+	String get_handle_name(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const override;
+	Variant get_handle_value(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const override;
+	void begin_handle_action(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) override;
+	void set_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, Camera3D *p_camera, const Point2 &p_point) override;
+	void commit_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, const Variant &p_restore, bool p_cancel = false) override;
+
+	DecalGizmoPlugin();
+	~DecalGizmoPlugin();
+};
+
+#endif // DECAL_GIZMO_PLUGIN_H

engine/editor/plugins/gizmos/fog_volume_gizmo_plugin.cpp

@@ -0,0 +1,128 @@
+/**************************************************************************/
+/*  fog_volume_gizmo_plugin.cpp                                           */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#include "fog_volume_gizmo_plugin.h"
+
+#include "editor/editor_node.h"
+#include "editor/editor_settings.h"
+#include "editor/editor_string_names.h"
+#include "editor/plugins/gizmos/gizmo_3d_helper.h"
+#include "scene/3d/fog_volume.h"
+
+FogVolumeGizmoPlugin::FogVolumeGizmoPlugin() {
+	helper.instantiate();
+	Color gizmo_color = EDITOR_GET("editors/3d_gizmos/gizmo_colors/fog_volume");
+	create_material("shape_material", gizmo_color);
+	gizmo_color.a = 0.15;
+	create_material("shape_material_internal", gizmo_color);
+
+	create_icon_material("fog_volume_icon", EditorNode::get_singleton()->get_editor_theme()->get_icon(SNAME("GizmoFogVolume"), EditorStringName(EditorIcons)));
+
+	create_handle_material("handles");
+}
+
+FogVolumeGizmoPlugin::~FogVolumeGizmoPlugin() {
+}
+
+bool FogVolumeGizmoPlugin::has_gizmo(Node3D *p_spatial) {
+	return (Object::cast_to<FogVolume>(p_spatial) != nullptr);
+}
+
+String FogVolumeGizmoPlugin::get_gizmo_name() const {
+	return "FogVolume";
+}
+
+int FogVolumeGizmoPlugin::get_priority() const {
+	return -1;
+}
+
+String FogVolumeGizmoPlugin::get_handle_name(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const {
+	return helper->box_get_handle_name(p_id);
+}
+
+Variant FogVolumeGizmoPlugin::get_handle_value(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const {
+	return Vector3(p_gizmo->get_node_3d()->call("get_size"));
+}
+
+void FogVolumeGizmoPlugin::begin_handle_action(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) {
+	helper->initialize_handle_action(get_handle_value(p_gizmo, p_id, p_secondary), p_gizmo->get_node_3d()->get_global_transform());
+}
+
+void FogVolumeGizmoPlugin::set_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, Camera3D *p_camera, const Point2 &p_point) {
+	FogVolume *fog_volume = Object::cast_to<FogVolume>(p_gizmo->get_node_3d());
+	Vector3 size = fog_volume->get_size();
+
+	Vector3 sg[2];
+	helper->get_segment(p_camera, p_point, sg);
+
+	Vector3 position;
+	helper->box_set_handle(sg, p_id, size, position);
+	fog_volume->set_size(size);
+	fog_volume->set_global_position(position);
+}
+
+void FogVolumeGizmoPlugin::commit_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, const Variant &p_restore, bool p_cancel) {
+	helper->box_commit_handle(TTR("Change FogVolume Size"), p_cancel, p_gizmo->get_node_3d());
+}
+
+void FogVolumeGizmoPlugin::redraw(EditorNode3DGizmo *p_gizmo) {
+	FogVolume *fog_volume = Object::cast_to<FogVolume>(p_gizmo->get_node_3d());
+
+	p_gizmo->clear();
+
+	if (fog_volume->get_shape() != RS::FOG_VOLUME_SHAPE_WORLD) {
+		const Ref<Material> material =
+				get_material("shape_material", p_gizmo);
+		const Ref<Material> material_internal =
+				get_material("shape_material_internal", p_gizmo);
+
+		Ref<Material> handles_material = get_material("handles");
+
+		Vector<Vector3> lines;
+		AABB aabb;
+		aabb.size = fog_volume->get_size();
+		aabb.position = aabb.size / -2;
+
+		for (int i = 0; i < 12; i++) {
+			Vector3 a, b;
+			aabb.get_edge(i, a, b);
+			lines.push_back(a);
+			lines.push_back(b);
+		}
+
+		Vector<Vector3> handles = helper->box_get_handles(fog_volume->get_size());
+
+		p_gizmo->add_lines(lines, material);
+		p_gizmo->add_collision_segments(lines);
+		const Ref<Material> icon = get_material("fog_volume_icon", p_gizmo);
+		p_gizmo->add_unscaled_billboard(icon, 0.05);
+		p_gizmo->add_handles(handles, handles_material);
+	}
+}

engine/editor/plugins/gizmos/fog_volume_gizmo_plugin.h

@@ -0,0 +1,59 @@
+/**************************************************************************/
+/*  fog_volume_gizmo_plugin.h                                             */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef FOG_VOLUME_GIZMO_PLUGIN_H
+#define FOG_VOLUME_GIZMO_PLUGIN_H
+
+#include "editor/plugins/node_3d_editor_gizmos.h"
+
+class Gizmo3DHelper;
+
+class FogVolumeGizmoPlugin : public EditorNode3DGizmoPlugin {
+	GDCLASS(FogVolumeGizmoPlugin, EditorNode3DGizmoPlugin);
+
+	Ref<Gizmo3DHelper> helper;
+
+public:
+	bool has_gizmo(Node3D *p_spatial) override;
+	String get_gizmo_name() const override;
+	int get_priority() const override;
+	void redraw(EditorNode3DGizmo *p_gizmo) override;
+
+	String get_handle_name(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const override;
+	Variant get_handle_value(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const override;
+	void begin_handle_action(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) override;
+	void set_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, Camera3D *p_camera, const Point2 &p_point) override;
+	void commit_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, const Variant &p_restore, bool p_cancel = false) override;
+
+	FogVolumeGizmoPlugin();
+	~FogVolumeGizmoPlugin();
+};
+
+#endif // FOG_VOLUME_GIZMO_PLUGIN_H

engine/editor/plugins/gizmos/geometry_instance_3d_gizmo_plugin.cpp

@@ -0,0 +1,77 @@
+/**************************************************************************/
+/*  geometry_instance_3d_gizmo_plugin.cpp                                 */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#include "geometry_instance_3d_gizmo_plugin.h"
+
+#include "editor/editor_settings.h"
+#include "scene/3d/visual_instance_3d.h"
+
+GeometryInstance3DGizmoPlugin::GeometryInstance3DGizmoPlugin() {
+}
+
+bool GeometryInstance3DGizmoPlugin::has_gizmo(Node3D *p_spatial) {
+	return Object::cast_to<GeometryInstance3D>(p_spatial) != nullptr;
+}
+
+String GeometryInstance3DGizmoPlugin::get_gizmo_name() const {
+	return "MeshInstance3DCustomAABB";
+}
+
+int GeometryInstance3DGizmoPlugin::get_priority() const {
+	return -1;
+}
+
+void GeometryInstance3DGizmoPlugin::redraw(EditorNode3DGizmo *p_gizmo) {
+	GeometryInstance3D *geometry = Object::cast_to<GeometryInstance3D>(p_gizmo->get_node_3d());
+
+	p_gizmo->clear();
+
+	if (p_gizmo->is_selected()) {
+		AABB aabb = geometry->get_custom_aabb();
+
+		Vector<Vector3> lines;
+		for (int i = 0; i < 12; i++) {
+			Vector3 a;
+			Vector3 b;
+			aabb.get_edge(i, a, b);
+
+			lines.push_back(a);
+			lines.push_back(b);
+		}
+
+		Ref<StandardMaterial3D> mat = memnew(StandardMaterial3D);
+		mat->set_shading_mode(StandardMaterial3D::SHADING_MODE_UNSHADED);
+		mat->set_flag(StandardMaterial3D::FLAG_DISABLE_FOG, true);
+		const Color selection_box_color = EDITOR_GET("editors/3d_gizmos/gizmo_colors/aabb");
+		mat->set_albedo(selection_box_color);
+		mat->set_transparency(StandardMaterial3D::TRANSPARENCY_ALPHA);
+		p_gizmo->add_lines(lines, mat);
+	}
+}

engine/editor/plugins/gizmos/geometry_instance_3d_gizmo_plugin.h

@@ -0,0 +1,49 @@
+/**************************************************************************/
+/*  geometry_instance_3d_gizmo_plugin.h                                   */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef GEOMETRY_INSTANCE_3D_GIZMO_PLUGIN_H
+#define GEOMETRY_INSTANCE_3D_GIZMO_PLUGIN_H
+
+#include "editor/plugins/node_3d_editor_gizmos.h"
+
+class GeometryInstance3DGizmoPlugin : public EditorNode3DGizmoPlugin {
+	GDCLASS(GeometryInstance3DGizmoPlugin, EditorNode3DGizmoPlugin);
+
+public:
+	virtual bool has_gizmo(Node3D *p_spatial) override;
+	virtual String get_gizmo_name() const override;
+	virtual int get_priority() const override;
+
+	virtual void redraw(EditorNode3DGizmo *p_gizmo) override;
+
+	GeometryInstance3DGizmoPlugin();
+};
+
+#endif // GEOMETRY_INSTANCE_3D_GIZMO_PLUGIN_H

engine/editor/plugins/gizmos/gizmo_3d_helper.cpp

@@ -0,0 +1,236 @@
+/**************************************************************************/
+/*  gizmo_3d_helper.cpp                                                   */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#include "gizmo_3d_helper.h"
+
+#include "editor/editor_undo_redo_manager.h"
+#include "editor/plugins/node_3d_editor_plugin.h"
+#include "scene/3d/camera_3d.h"
+
+void Gizmo3DHelper::initialize_handle_action(const Variant &p_initial_value, const Transform3D &p_initial_transform) {
+	initial_value = p_initial_value;
+	initial_transform = p_initial_transform;
+}
+
+void Gizmo3DHelper::get_segment(Camera3D *p_camera, const Point2 &p_point, Vector3 *r_segment) {
+	Transform3D gt = initial_transform;
+	Transform3D gi = gt.affine_inverse();
+
+	Vector3 ray_from = p_camera->project_ray_origin(p_point);
+	Vector3 ray_dir = p_camera->project_ray_normal(p_point);
+
+	r_segment[0] = gi.xform(ray_from);
+	r_segment[1] = gi.xform(ray_from + ray_dir * 4096);
+}
+
+Vector<Vector3> Gizmo3DHelper::box_get_handles(const Vector3 &p_box_size) {
+	Vector<Vector3> handles;
+	for (int i = 0; i < 3; i++) {
+		Vector3 ax;
+		ax[i] = p_box_size[i] / 2;
+		handles.push_back(ax);
+		handles.push_back(-ax);
+	}
+	return handles;
+}
+
+String Gizmo3DHelper::box_get_handle_name(int p_id) const {
+	switch (p_id) {
+		case 0:
+		case 1:
+			return "Size X";
+		case 2:
+		case 3:
+			return "Size Y";
+		case 4:
+		case 5:
+			return "Size Z";
+	}
+	return "";
+}
+
+void Gizmo3DHelper::box_set_handle(const Vector3 p_segment[2], int p_id, Vector3 &r_box_size, Vector3 &r_box_position) {
+	int axis = p_id / 2;
+	int sign = p_id % 2 * -2 + 1;
+
+	Vector3 initial_size = initial_value;
+	float neg_end = initial_size[axis] * -0.5;
+	float pos_end = initial_size[axis] * 0.5;
+
+	Vector3 axis_segment[2] = { Vector3(), Vector3() };
+	axis_segment[0][axis] = 4096.0;
+	axis_segment[1][axis] = -4096.0;
+	Vector3 ra, rb;
+	Geometry3D::get_closest_points_between_segments(axis_segment[0], axis_segment[1], p_segment[0], p_segment[1], ra, rb);
+
+	// Calculate new size.
+	r_box_size = initial_size;
+	if (Input::get_singleton()->is_key_pressed(Key::ALT)) {
+		r_box_size[axis] = ra[axis] * sign * 2;
+	} else {
+		r_box_size[axis] = sign > 0 ? ra[axis] - neg_end : pos_end - ra[axis];
+	}
+
+	// Snap to grid.
+	if (Node3DEditor::get_singleton()->is_snap_enabled()) {
+		r_box_size[axis] = Math::snapped(r_box_size[axis], Node3DEditor::get_singleton()->get_translate_snap());
+	}
+	r_box_size[axis] = MAX(r_box_size[axis], 0.001);
+
+	// Adjust position.
+	if (Input::get_singleton()->is_key_pressed(Key::ALT)) {
+		r_box_position = initial_transform.get_origin();
+	} else {
+		if (sign > 0) {
+			pos_end = neg_end + r_box_size[axis];
+		} else {
+			neg_end = pos_end - r_box_size[axis];
+		}
+
+		Vector3 offset;
+		offset[axis] = (pos_end + neg_end) * 0.5;
+		r_box_position = initial_transform.xform(offset);
+	}
+}
+
+void Gizmo3DHelper::box_commit_handle(const String &p_action_name, bool p_cancel, Object *p_position_object, Object *p_size_object, const StringName &p_position_property, const StringName &p_size_property) {
+	if (!p_size_object) {
+		p_size_object = p_position_object;
+	}
+
+	if (p_cancel) {
+		p_size_object->set(p_size_property, initial_value);
+		p_position_object->set(p_position_property, initial_transform.get_origin());
+		return;
+	}
+
+	EditorUndoRedoManager *ur = EditorUndoRedoManager::get_singleton();
+	ur->create_action(p_action_name);
+	ur->add_do_property(p_size_object, p_size_property, p_size_object->get(p_size_property));
+	ur->add_do_property(p_position_object, p_position_property, p_position_object->get(p_position_property));
+	ur->add_undo_property(p_size_object, p_size_property, initial_value);
+	ur->add_undo_property(p_position_object, p_position_property, initial_transform.get_origin());
+	ur->commit_action();
+}
+
+Vector<Vector3> Gizmo3DHelper::cylinder_get_handles(real_t p_height, real_t p_radius) {
+	Vector<Vector3> handles;
+	handles.push_back(Vector3(p_radius, 0, 0));
+	handles.push_back(Vector3(0, p_height * 0.5, 0));
+	handles.push_back(Vector3(0, p_height * -0.5, 0));
+	return handles;
+}
+
+String Gizmo3DHelper::cylinder_get_handle_name(int p_id) const {
+	if (p_id == 0) {
+		return "Radius";
+	} else {
+		return "Height";
+	}
+}
+
+void Gizmo3DHelper::cylinder_set_handle(const Vector3 p_segment[2], int p_id, real_t &r_height, real_t &r_radius, Vector3 &r_cylinder_position) {
+	int sign = p_id == 2 ? -1 : 1;
+	int axis = p_id == 0 ? 0 : 1;
+
+	Vector3 axis_vector;
+	axis_vector[axis] = sign;
+	Vector3 ra, rb;
+	Geometry3D::get_closest_points_between_segments(axis_vector * -4096, axis_vector * 4096, p_segment[0], p_segment[1], ra, rb);
+	float d = axis_vector.dot(ra);
+
+	// Snap to grid.
+	if (Node3DEditor::get_singleton()->is_snap_enabled()) {
+		d = Math::snapped(d, Node3DEditor::get_singleton()->get_translate_snap());
+	}
+
+	if (p_id == 0) {
+		// Adjust radius.
+		if (d < 0.001) {
+			d = 0.001;
+		}
+		r_radius = d;
+		r_cylinder_position = initial_transform.get_origin();
+	} else if (p_id == 1 || p_id == 2) {
+		real_t initial_height = initial_value;
+
+		// Adjust height.
+		if (Input::get_singleton()->is_key_pressed(Key::ALT)) {
+			r_height = d * 2.0;
+		} else {
+			r_height = (initial_height * 0.5) + d;
+		}
+
+		if (r_height < 0.001) {
+			r_height = 0.001;
+		}
+
+		// Adjust position.
+		if (Input::get_singleton()->is_key_pressed(Key::ALT)) {
+			r_cylinder_position = initial_transform.get_origin();
+		} else {
+			Vector3 offset;
+			offset[axis] = (r_height - initial_height) * 0.5 * sign;
+			r_cylinder_position = initial_transform.xform(offset);
+		}
+	}
+}
+
+void Gizmo3DHelper::cylinder_commit_handle(int p_id, const String &p_radius_action_name, const String &p_height_action_name, bool p_cancel, Object *p_position_object, Object *p_height_object, Object *p_radius_object, const StringName &p_position_property, const StringName &p_height_property, const StringName &p_radius_property) {
+	if (!p_height_object) {
+		p_height_object = p_position_object;
+	}
+	if (!p_radius_object) {
+		p_radius_object = p_position_object;
+	}
+
+	if (p_cancel) {
+		if (p_id == 0) {
+			p_radius_object->set(p_radius_property, initial_value);
+		} else {
+			p_height_object->set(p_height_property, initial_value);
+		}
+		p_position_object->set(p_position_property, initial_transform.get_origin());
+		return;
+	}
+
+	EditorUndoRedoManager *ur = EditorUndoRedoManager::get_singleton();
+	ur->create_action(p_id == 0 ? p_radius_action_name : p_height_action_name);
+	if (p_id == 0) {
+		ur->add_do_property(p_radius_object, p_radius_property, p_radius_object->get(p_radius_property));
+		ur->add_undo_property(p_radius_object, p_radius_property, initial_value);
+	} else {
+		ur->add_do_property(p_height_object, p_height_property, p_height_object->get(p_height_property));
+		ur->add_do_property(p_position_object, p_position_property, p_position_object->get(p_position_property));
+		ur->add_undo_property(p_height_object, p_height_property, initial_value);
+		ur->add_undo_property(p_position_object, p_position_property, initial_transform.get_origin());
+	}
+	ur->commit_action();
+}

engine/editor/plugins/gizmos/gizmo_3d_helper.h

@@ -0,0 +1,60 @@
+/**************************************************************************/
+/*  gizmo_3d_helper.h                                                     */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef GIZMO_3D_HELPER_H
+#define GIZMO_3D_HELPER_H
+
+#include "core/object/ref_counted.h"
+
+class Camera3D;
+
+class Gizmo3DHelper : public RefCounted {
+	GDCLASS(Gizmo3DHelper, RefCounted);
+
+	int current_handle_id;
+	Variant initial_value;
+	Transform3D initial_transform;
+
+public:
+	void initialize_handle_action(const Variant &p_initial_value, const Transform3D &p_initial_transform);
+	void get_segment(Camera3D *p_camera, const Point2 &p_point, Vector3 *r_segment);
+
+	Vector<Vector3> box_get_handles(const Vector3 &p_box_size);
+	String box_get_handle_name(int p_id) const;
+	void box_set_handle(const Vector3 p_segment[2], int p_id, Vector3 &r_box_size, Vector3 &r_box_position);
+	void box_commit_handle(const String &p_action_name, bool p_cancel, Object *p_position_object, Object *p_size_object = nullptr, const StringName &p_position_property = "global_position", const StringName &p_size_property = "size");
+
+	Vector<Vector3> cylinder_get_handles(real_t p_height, real_t p_radius);
+	String cylinder_get_handle_name(int p_id) const;
+	void cylinder_set_handle(const Vector3 p_segment[2], int p_id, real_t &r_height, real_t &r_radius, Vector3 &r_cylinder_position);
+	void cylinder_commit_handle(int p_id, const String &p_radius_action_name, const String &p_height_action_name, bool p_cancel, Object *p_position_object, Object *p_height_object = nullptr, Object *p_radius_object = nullptr, const StringName &p_position_property = "global_position", const StringName &p_height_property = "height", const StringName &p_radius_property = "radius");
+};
+
+#endif // GIZMO_3D_HELPER_H

engine/editor/plugins/gizmos/gpu_particles_3d_gizmo_plugin.cpp

@@ -0,0 +1,84 @@
+/**************************************************************************/
+/*  gpu_particles_3d_gizmo_plugin.cpp                                     */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#include "gpu_particles_3d_gizmo_plugin.h"
+
+#include "editor/editor_node.h"
+#include "editor/editor_settings.h"
+#include "editor/editor_string_names.h"
+#include "scene/3d/gpu_particles_3d.h"
+
+GPUParticles3DGizmoPlugin::GPUParticles3DGizmoPlugin() {
+	Color gizmo_color = EDITOR_GET("editors/3d_gizmos/gizmo_colors/particles");
+	create_material("particles_material", gizmo_color);
+	gizmo_color.a = MAX((gizmo_color.a - 0.2) * 0.02, 0.0);
+	create_icon_material("particles_icon", EditorNode::get_singleton()->get_editor_theme()->get_icon(SNAME("GizmoGPUParticles3D"), EditorStringName(EditorIcons)));
+}
+
+bool GPUParticles3DGizmoPlugin::has_gizmo(Node3D *p_spatial) {
+	return Object::cast_to<GPUParticles3D>(p_spatial) != nullptr;
+}
+
+String GPUParticles3DGizmoPlugin::get_gizmo_name() const {
+	return "GPUParticles3D";
+}
+
+int GPUParticles3DGizmoPlugin::get_priority() const {
+	return -1;
+}
+
+bool GPUParticles3DGizmoPlugin::is_selectable_when_hidden() const {
+	return true;
+}
+
+void GPUParticles3DGizmoPlugin::redraw(EditorNode3DGizmo *p_gizmo) {
+	p_gizmo->clear();
+
+	if (p_gizmo->is_selected()) {
+		GPUParticles3D *particles = Object::cast_to<GPUParticles3D>(p_gizmo->get_node_3d());
+
+		Vector<Vector3> lines;
+		AABB aabb = particles->get_visibility_aabb();
+
+		for (int i = 0; i < 12; i++) {
+			Vector3 a, b;
+			aabb.get_edge(i, a, b);
+			lines.push_back(a);
+			lines.push_back(b);
+		}
+
+		Ref<Material> material = get_material("particles_material", p_gizmo);
+
+		p_gizmo->add_lines(lines, material);
+	}
+
+	Ref<Material> icon = get_material("particles_icon", p_gizmo);
+	p_gizmo->add_unscaled_billboard(icon, 0.05);
+}

engine/editor/plugins/gizmos/gpu_particles_3d_gizmo_plugin.h

@@ -0,0 +1,49 @@
+/**************************************************************************/
+/*  gpu_particles_3d_gizmo_plugin.h                                       */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef GPU_PARTICLES_3D_GIZMO_PLUGIN_H
+#define GPU_PARTICLES_3D_GIZMO_PLUGIN_H
+
+#include "editor/plugins/node_3d_editor_gizmos.h"
+
+class GPUParticles3DGizmoPlugin : public EditorNode3DGizmoPlugin {
+	GDCLASS(GPUParticles3DGizmoPlugin, EditorNode3DGizmoPlugin);
+
+public:
+	bool has_gizmo(Node3D *p_spatial) override;
+	String get_gizmo_name() const override;
+	int get_priority() const override;
+	bool is_selectable_when_hidden() const override;
+	void redraw(EditorNode3DGizmo *p_gizmo) override;
+
+	GPUParticles3DGizmoPlugin();
+};
+
+#endif // GPU_PARTICLES_3D_GIZMO_PLUGIN_H

engine/editor/plugins/gizmos/gpu_particles_collision_3d_gizmo_plugin.cpp

@@ -0,0 +1,273 @@
+/**************************************************************************/
+/*  gpu_particles_collision_3d_gizmo_plugin.cpp                           */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#include "gpu_particles_collision_3d_gizmo_plugin.h"
+
+#include "editor/editor_settings.h"
+#include "editor/editor_undo_redo_manager.h"
+#include "editor/plugins/gizmos/gizmo_3d_helper.h"
+#include "editor/plugins/node_3d_editor_plugin.h"
+#include "scene/3d/gpu_particles_collision_3d.h"
+
+GPUParticlesCollision3DGizmoPlugin::GPUParticlesCollision3DGizmoPlugin() {
+	helper.instantiate();
+
+	Color gizmo_color_attractor = EDITOR_GET("editors/3d_gizmos/gizmo_colors/particle_attractor");
+	create_material("shape_material_attractor", gizmo_color_attractor);
+	gizmo_color_attractor.a = 0.15;
+	create_material("shape_material_attractor_internal", gizmo_color_attractor);
+
+	Color gizmo_color_collision = EDITOR_GET("editors/3d_gizmos/gizmo_colors/particle_collision");
+	create_material("shape_material_collision", gizmo_color_collision);
+	gizmo_color_collision.a = 0.15;
+	create_material("shape_material_collision_internal", gizmo_color_collision);
+
+	create_handle_material("handles");
+}
+
+GPUParticlesCollision3DGizmoPlugin::~GPUParticlesCollision3DGizmoPlugin() {
+}
+
+bool GPUParticlesCollision3DGizmoPlugin::has_gizmo(Node3D *p_spatial) {
+	return (Object::cast_to<GPUParticlesCollision3D>(p_spatial) != nullptr) || (Object::cast_to<GPUParticlesAttractor3D>(p_spatial) != nullptr);
+}
+
+String GPUParticlesCollision3DGizmoPlugin::get_gizmo_name() const {
+	return "GPUParticlesCollision3D";
+}
+
+int GPUParticlesCollision3DGizmoPlugin::get_priority() const {
+	return -1;
+}
+
+String GPUParticlesCollision3DGizmoPlugin::get_handle_name(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const {
+	const Node3D *cs = p_gizmo->get_node_3d();
+
+	if (Object::cast_to<GPUParticlesCollisionSphere3D>(cs) || Object::cast_to<GPUParticlesAttractorSphere3D>(cs)) {
+		return "Radius";
+	}
+
+	if (Object::cast_to<GPUParticlesCollisionBox3D>(cs) || Object::cast_to<GPUParticlesAttractorBox3D>(cs) || Object::cast_to<GPUParticlesAttractorVectorField3D>(cs) || Object::cast_to<GPUParticlesCollisionSDF3D>(cs) || Object::cast_to<GPUParticlesCollisionHeightField3D>(cs)) {
+		return helper->box_get_handle_name(p_id);
+	}
+
+	return "";
+}
+
+Variant GPUParticlesCollision3DGizmoPlugin::get_handle_value(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const {
+	const Node3D *cs = p_gizmo->get_node_3d();
+
+	if (Object::cast_to<GPUParticlesCollisionSphere3D>(cs) || Object::cast_to<GPUParticlesAttractorSphere3D>(cs)) {
+		return p_gizmo->get_node_3d()->call("get_radius");
+	}
+
+	if (Object::cast_to<GPUParticlesCollisionBox3D>(cs) || Object::cast_to<GPUParticlesAttractorBox3D>(cs) || Object::cast_to<GPUParticlesAttractorVectorField3D>(cs) || Object::cast_to<GPUParticlesCollisionSDF3D>(cs) || Object::cast_to<GPUParticlesCollisionHeightField3D>(cs)) {
+		return Vector3(p_gizmo->get_node_3d()->call("get_size"));
+	}
+
+	return Variant();
+}
+
+void GPUParticlesCollision3DGizmoPlugin::begin_handle_action(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) {
+	helper->initialize_handle_action(get_handle_value(p_gizmo, p_id, p_secondary), p_gizmo->get_node_3d()->get_global_transform());
+}
+
+void GPUParticlesCollision3DGizmoPlugin::set_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, Camera3D *p_camera, const Point2 &p_point) {
+	Node3D *sn = p_gizmo->get_node_3d();
+
+	Vector3 sg[2];
+	helper->get_segment(p_camera, p_point, sg);
+
+	if (Object::cast_to<GPUParticlesCollisionSphere3D>(sn) || Object::cast_to<GPUParticlesAttractorSphere3D>(sn)) {
+		Vector3 ra, rb;
+		Geometry3D::get_closest_points_between_segments(Vector3(), Vector3(4096, 0, 0), sg[0], sg[1], ra, rb);
+		float d = ra.x;
+		if (Node3DEditor::get_singleton()->is_snap_enabled()) {
+			d = Math::snapped(d, Node3DEditor::get_singleton()->get_translate_snap());
+		}
+
+		if (d < 0.001) {
+			d = 0.001;
+		}
+
+		sn->call("set_radius", d);
+	}
+
+	if (Object::cast_to<GPUParticlesCollisionBox3D>(sn) || Object::cast_to<GPUParticlesAttractorBox3D>(sn) || Object::cast_to<GPUParticlesAttractorVectorField3D>(sn) || Object::cast_to<GPUParticlesCollisionSDF3D>(sn) || Object::cast_to<GPUParticlesCollisionHeightField3D>(sn)) {
+		Vector3 size = sn->call("get_size");
+		Vector3 position;
+		helper->box_set_handle(sg, p_id, size, position);
+		sn->call("set_size", size);
+		sn->set_global_position(position);
+	}
+}
+
+void GPUParticlesCollision3DGizmoPlugin::commit_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, const Variant &p_restore, bool p_cancel) {
+	Node3D *sn = p_gizmo->get_node_3d();
+
+	if (Object::cast_to<GPUParticlesCollisionSphere3D>(sn) || Object::cast_to<GPUParticlesAttractorSphere3D>(sn)) {
+		if (p_cancel) {
+			sn->call("set_radius", p_restore);
+			return;
+		}
+
+		EditorUndoRedoManager *ur = EditorUndoRedoManager::get_singleton();
+		ur->create_action(TTR("Change Radius"));
+		ur->add_do_method(sn, "set_radius", sn->call("get_radius"));
+		ur->add_undo_method(sn, "set_radius", p_restore);
+		ur->commit_action();
+	}
+
+	if (Object::cast_to<GPUParticlesCollisionBox3D>(sn) || Object::cast_to<GPUParticlesAttractorBox3D>(sn) || Object::cast_to<GPUParticlesAttractorVectorField3D>(sn) || Object::cast_to<GPUParticlesCollisionSDF3D>(sn) || Object::cast_to<GPUParticlesCollisionHeightField3D>(sn)) {
+		helper->box_commit_handle("Change Box Shape Size", p_cancel, sn);
+	}
+}
+
+void GPUParticlesCollision3DGizmoPlugin::redraw(EditorNode3DGizmo *p_gizmo) {
+	Node3D *cs = p_gizmo->get_node_3d();
+
+	p_gizmo->clear();
+
+	Ref<Material> material;
+	Ref<Material> material_internal;
+	if (Object::cast_to<GPUParticlesAttractor3D>(cs)) {
+		material = get_material("shape_material_attractor", p_gizmo);
+		material_internal = get_material("shape_material_attractor_internal", p_gizmo);
+	} else {
+		material = get_material("shape_material_collision", p_gizmo);
+		material_internal = get_material("shape_material_collision_internal", p_gizmo);
+	}
+
+	const Ref<Material> handles_material = get_material("handles");
+
+	if (Object::cast_to<GPUParticlesCollisionSphere3D>(cs) || Object::cast_to<GPUParticlesAttractorSphere3D>(cs)) {
+		float r = cs->call("get_radius");
+
+		Vector<Vector3> points;
+
+		for (int i = 0; i <= 360; i++) {
+			float ra = Math::deg_to_rad((float)i);
+			float rb = Math::deg_to_rad((float)i + 1);
+			Point2 a = Vector2(Math::sin(ra), Math::cos(ra)) * r;
+			Point2 b = Vector2(Math::sin(rb), Math::cos(rb)) * r;
+
+			points.push_back(Vector3(a.x, 0, a.y));
+			points.push_back(Vector3(b.x, 0, b.y));
+			points.push_back(Vector3(0, a.x, a.y));
+			points.push_back(Vector3(0, b.x, b.y));
+			points.push_back(Vector3(a.x, a.y, 0));
+			points.push_back(Vector3(b.x, b.y, 0));
+		}
+
+		Vector<Vector3> collision_segments;
+
+		for (int i = 0; i < 64; i++) {
+			float ra = i * (Math_TAU / 64.0);
+			float rb = (i + 1) * (Math_TAU / 64.0);
+			Point2 a = Vector2(Math::sin(ra), Math::cos(ra)) * r;
+			Point2 b = Vector2(Math::sin(rb), Math::cos(rb)) * r;
+
+			collision_segments.push_back(Vector3(a.x, 0, a.y));
+			collision_segments.push_back(Vector3(b.x, 0, b.y));
+			collision_segments.push_back(Vector3(0, a.x, a.y));
+			collision_segments.push_back(Vector3(0, b.x, b.y));
+			collision_segments.push_back(Vector3(a.x, a.y, 0));
+			collision_segments.push_back(Vector3(b.x, b.y, 0));
+		}
+
+		p_gizmo->add_lines(points, material);
+		p_gizmo->add_collision_segments(collision_segments);
+		Vector<Vector3> handles;
+		handles.push_back(Vector3(r, 0, 0));
+		p_gizmo->add_handles(handles, handles_material);
+	}
+
+	if (Object::cast_to<GPUParticlesCollisionBox3D>(cs) || Object::cast_to<GPUParticlesAttractorBox3D>(cs) || Object::cast_to<GPUParticlesAttractorVectorField3D>(cs) || Object::cast_to<GPUParticlesCollisionSDF3D>(cs) || Object::cast_to<GPUParticlesCollisionHeightField3D>(cs)) {
+		Vector<Vector3> lines;
+		AABB aabb;
+		aabb.size = cs->call("get_size").operator Vector3();
+		aabb.position = aabb.size / -2;
+
+		for (int i = 0; i < 12; i++) {
+			Vector3 a, b;
+			aabb.get_edge(i, a, b);
+			lines.push_back(a);
+			lines.push_back(b);
+		}
+
+		Vector<Vector3> handles = helper->box_get_handles(aabb.size);
+
+		p_gizmo->add_lines(lines, material);
+		p_gizmo->add_collision_segments(lines);
+		p_gizmo->add_handles(handles, handles_material);
+
+		GPUParticlesCollisionSDF3D *col_sdf = Object::cast_to<GPUParticlesCollisionSDF3D>(cs);
+		if (col_sdf) {
+			static const int subdivs[GPUParticlesCollisionSDF3D::RESOLUTION_MAX] = { 16, 32, 64, 128, 256, 512 };
+			int subdiv = subdivs[col_sdf->get_resolution()];
+			float cell_size = aabb.get_longest_axis_size() / subdiv;
+
+			lines.clear();
+
+			for (int i = 1; i < subdiv; i++) {
+				for (int j = 0; j < 3; j++) {
+					if (cell_size * i > aabb.size[j]) {
+						continue;
+					}
+
+					int j_n1 = (j + 1) % 3;
+					int j_n2 = (j + 2) % 3;
+
+					for (int k = 0; k < 4; k++) {
+						Vector3 from = aabb.position, to = aabb.position;
+						from[j] += cell_size * i;
+						to[j] += cell_size * i;
+
+						if (k & 1) {
+							to[j_n1] += aabb.size[j_n1];
+						} else {
+							to[j_n2] += aabb.size[j_n2];
+						}
+
+						if (k & 2) {
+							from[j_n1] += aabb.size[j_n1];
+							from[j_n2] += aabb.size[j_n2];
+						}
+
+						lines.push_back(from);
+						lines.push_back(to);
+					}
+				}
+			}
+
+			p_gizmo->add_lines(lines, material_internal);
+		}
+	}
+}

engine/editor/plugins/gizmos/gpu_particles_collision_3d_gizmo_plugin.h

@@ -0,0 +1,59 @@
+/**************************************************************************/
+/*  gpu_particles_collision_3d_gizmo_plugin.h                             */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef GPU_PARTICLES_COLLISION_3D_GIZMO_PLUGIN_H
+#define GPU_PARTICLES_COLLISION_3D_GIZMO_PLUGIN_H
+
+#include "editor/plugins/node_3d_editor_gizmos.h"
+
+class Gizmo3DHelper;
+
+class GPUParticlesCollision3DGizmoPlugin : public EditorNode3DGizmoPlugin {
+	GDCLASS(GPUParticlesCollision3DGizmoPlugin, EditorNode3DGizmoPlugin);
+
+	Ref<Gizmo3DHelper> helper;
+
+public:
+	bool has_gizmo(Node3D *p_spatial) override;
+	String get_gizmo_name() const override;
+	int get_priority() const override;
+	void redraw(EditorNode3DGizmo *p_gizmo) override;
+
+	String get_handle_name(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const override;
+	Variant get_handle_value(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const override;
+	void begin_handle_action(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) override;
+	void set_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, Camera3D *p_camera, const Point2 &p_point) override;
+	void commit_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, const Variant &p_restore, bool p_cancel = false) override;
+
+	GPUParticlesCollision3DGizmoPlugin();
+	~GPUParticlesCollision3DGizmoPlugin();
+};
+
+#endif // GPU_PARTICLES_COLLISION_3D_GIZMO_PLUGIN_H

engine/editor/plugins/gizmos/joint_3d_gizmo_plugin.cpp

@@ -0,0 +1,723 @@
+/**************************************************************************/
+/*  joint_3d_gizmo_plugin.cpp                                             */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#include "joint_3d_gizmo_plugin.h"
+
+#include "editor/editor_node.h"
+#include "editor/editor_settings.h"
+#include "scene/3d/physics/joints/cone_twist_joint_3d.h"
+#include "scene/3d/physics/joints/generic_6dof_joint_3d.h"
+#include "scene/3d/physics/joints/hinge_joint_3d.h"
+#include "scene/3d/physics/joints/pin_joint_3d.h"
+#include "scene/3d/physics/joints/slider_joint_3d.h"
+
+#define BODY_A_RADIUS 0.25
+#define BODY_B_RADIUS 0.27
+
+Basis JointGizmosDrawer::look_body(const Transform3D &p_joint_transform, const Transform3D &p_body_transform) {
+	const Vector3 &p_eye(p_joint_transform.origin);
+	const Vector3 &p_target(p_body_transform.origin);
+
+	Vector3 v_x, v_y, v_z;
+
+	// Look the body with X
+	v_x = p_target - p_eye;
+	v_x.normalize();
+
+	v_z = v_x.cross(Vector3(0, 1, 0));
+	v_z.normalize();
+
+	v_y = v_z.cross(v_x);
+	v_y.normalize();
+
+	Basis base;
+	base.set_columns(v_x, v_y, v_z);
+
+	// Absorb current joint transform
+	base = p_joint_transform.basis.inverse() * base;
+
+	return base;
+}
+
+Basis JointGizmosDrawer::look_body_toward(Vector3::Axis p_axis, const Transform3D &joint_transform, const Transform3D &body_transform) {
+	switch (p_axis) {
+		case Vector3::AXIS_X:
+			return look_body_toward_x(joint_transform, body_transform);
+		case Vector3::AXIS_Y:
+			return look_body_toward_y(joint_transform, body_transform);
+		case Vector3::AXIS_Z:
+			return look_body_toward_z(joint_transform, body_transform);
+		default:
+			return Basis();
+	}
+}
+
+Basis JointGizmosDrawer::look_body_toward_x(const Transform3D &p_joint_transform, const Transform3D &p_body_transform) {
+	const Vector3 &p_eye(p_joint_transform.origin);
+	const Vector3 &p_target(p_body_transform.origin);
+
+	const Vector3 p_front(p_joint_transform.basis.get_column(0));
+
+	Vector3 v_x, v_y, v_z;
+
+	// Look the body with X
+	v_x = p_target - p_eye;
+	v_x.normalize();
+
+	v_y = p_front.cross(v_x);
+	v_y.normalize();
+
+	v_z = v_y.cross(p_front);
+	v_z.normalize();
+
+	// Clamp X to FRONT axis
+	v_x = p_front;
+	v_x.normalize();
+
+	Basis base;
+	base.set_columns(v_x, v_y, v_z);
+
+	// Absorb current joint transform
+	base = p_joint_transform.basis.inverse() * base;
+
+	return base;
+}
+
+Basis JointGizmosDrawer::look_body_toward_y(const Transform3D &p_joint_transform, const Transform3D &p_body_transform) {
+	const Vector3 &p_eye(p_joint_transform.origin);
+	const Vector3 &p_target(p_body_transform.origin);
+
+	const Vector3 p_up(p_joint_transform.basis.get_column(1));
+
+	Vector3 v_x, v_y, v_z;
+
+	// Look the body with X
+	v_x = p_target - p_eye;
+	v_x.normalize();
+
+	v_z = v_x.cross(p_up);
+	v_z.normalize();
+
+	v_x = p_up.cross(v_z);
+	v_x.normalize();
+
+	// Clamp Y to UP axis
+	v_y = p_up;
+	v_y.normalize();
+
+	Basis base;
+	base.set_columns(v_x, v_y, v_z);
+
+	// Absorb current joint transform
+	base = p_joint_transform.basis.inverse() * base;
+
+	return base;
+}
+
+Basis JointGizmosDrawer::look_body_toward_z(const Transform3D &p_joint_transform, const Transform3D &p_body_transform) {
+	const Vector3 &p_eye(p_joint_transform.origin);
+	const Vector3 &p_target(p_body_transform.origin);
+
+	const Vector3 p_lateral(p_joint_transform.basis.get_column(2));
+
+	Vector3 v_x, v_y, v_z;
+
+	// Look the body with X
+	v_x = p_target - p_eye;
+	v_x.normalize();
+
+	v_z = p_lateral;
+	v_z.normalize();
+
+	v_y = v_z.cross(v_x);
+	v_y.normalize();
+
+	// Clamp X to Z axis
+	v_x = v_y.cross(v_z);
+	v_x.normalize();
+
+	Basis base;
+	base.set_columns(v_x, v_y, v_z);
+
+	// Absorb current joint transform
+	base = p_joint_transform.basis.inverse() * base;
+
+	return base;
+}
+
+void JointGizmosDrawer::draw_circle(Vector3::Axis p_axis, real_t p_radius, const Transform3D &p_offset, const Basis &p_base, real_t p_limit_lower, real_t p_limit_upper, Vector<Vector3> &r_points, bool p_inverse) {
+	if (p_limit_lower == p_limit_upper) {
+		r_points.push_back(p_offset.translated_local(Vector3()).origin);
+		r_points.push_back(p_offset.translated_local(p_base.xform(Vector3(0.5, 0, 0))).origin);
+
+	} else {
+		if (p_limit_lower > p_limit_upper) {
+			p_limit_lower = -Math_PI;
+			p_limit_upper = Math_PI;
+		}
+
+		const int points = 32;
+
+		for (int i = 0; i < points; i++) {
+			real_t s = p_limit_lower + i * (p_limit_upper - p_limit_lower) / points;
+			real_t n = p_limit_lower + (i + 1) * (p_limit_upper - p_limit_lower) / points;
+
+			Vector3 from;
+			Vector3 to;
+			switch (p_axis) {
+				case Vector3::AXIS_X:
+					if (p_inverse) {
+						from = p_base.xform(Vector3(0, Math::sin(s), Math::cos(s))) * p_radius;
+						to = p_base.xform(Vector3(0, Math::sin(n), Math::cos(n))) * p_radius;
+					} else {
+						from = p_base.xform(Vector3(0, -Math::sin(s), Math::cos(s))) * p_radius;
+						to = p_base.xform(Vector3(0, -Math::sin(n), Math::cos(n))) * p_radius;
+					}
+					break;
+				case Vector3::AXIS_Y:
+					if (p_inverse) {
+						from = p_base.xform(Vector3(Math::cos(s), 0, -Math::sin(s))) * p_radius;
+						to = p_base.xform(Vector3(Math::cos(n), 0, -Math::sin(n))) * p_radius;
+					} else {
+						from = p_base.xform(Vector3(Math::cos(s), 0, Math::sin(s))) * p_radius;
+						to = p_base.xform(Vector3(Math::cos(n), 0, Math::sin(n))) * p_radius;
+					}
+					break;
+				case Vector3::AXIS_Z:
+					from = p_base.xform(Vector3(Math::cos(s), Math::sin(s), 0)) * p_radius;
+					to = p_base.xform(Vector3(Math::cos(n), Math::sin(n), 0)) * p_radius;
+					break;
+			}
+
+			if (i == points - 1) {
+				r_points.push_back(p_offset.translated_local(to).origin);
+				r_points.push_back(p_offset.translated_local(Vector3()).origin);
+			}
+			if (i == 0) {
+				r_points.push_back(p_offset.translated_local(from).origin);
+				r_points.push_back(p_offset.translated_local(Vector3()).origin);
+			}
+
+			r_points.push_back(p_offset.translated_local(from).origin);
+			r_points.push_back(p_offset.translated_local(to).origin);
+		}
+
+		r_points.push_back(p_offset.translated_local(Vector3(0, p_radius * 1.5, 0)).origin);
+		r_points.push_back(p_offset.translated_local(Vector3()).origin);
+	}
+}
+
+void JointGizmosDrawer::draw_cone(const Transform3D &p_offset, const Basis &p_base, real_t p_swing, real_t p_twist, Vector<Vector3> &r_points) {
+	float r = 1.0;
+	float w = r * Math::sin(p_swing);
+	float d = r * Math::cos(p_swing);
+
+	//swing
+	for (int i = 0; i < 360; i += 10) {
+		float ra = Math::deg_to_rad((float)i);
+		float rb = Math::deg_to_rad((float)i + 10);
+		Point2 a = Vector2(Math::sin(ra), Math::cos(ra)) * w;
+		Point2 b = Vector2(Math::sin(rb), Math::cos(rb)) * w;
+
+		r_points.push_back(p_offset.translated_local(p_base.xform(Vector3(d, a.x, a.y))).origin);
+		r_points.push_back(p_offset.translated_local(p_base.xform(Vector3(d, b.x, b.y))).origin);
+
+		if (i % 90 == 0) {
+			r_points.push_back(p_offset.translated_local(p_base.xform(Vector3(d, a.x, a.y))).origin);
+			r_points.push_back(p_offset.translated_local(p_base.xform(Vector3())).origin);
+		}
+	}
+
+	r_points.push_back(p_offset.translated_local(p_base.xform(Vector3())).origin);
+	r_points.push_back(p_offset.translated_local(p_base.xform(Vector3(1, 0, 0))).origin);
+
+	/// Twist
+	float ts = Math::rad_to_deg(p_twist);
+	ts = MIN(ts, 720);
+
+	for (int i = 0; i < int(ts); i += 5) {
+		float ra = Math::deg_to_rad((float)i);
+		float rb = Math::deg_to_rad((float)i + 5);
+		float c = i / 720.0;
+		float cn = (i + 5) / 720.0;
+		Point2 a = Vector2(Math::sin(ra), Math::cos(ra)) * w * c;
+		Point2 b = Vector2(Math::sin(rb), Math::cos(rb)) * w * cn;
+
+		r_points.push_back(p_offset.translated_local(p_base.xform(Vector3(c, a.x, a.y))).origin);
+		r_points.push_back(p_offset.translated_local(p_base.xform(Vector3(cn, b.x, b.y))).origin);
+	}
+}
+
+////
+
+Joint3DGizmoPlugin::Joint3DGizmoPlugin() {
+	create_material("joint_material", EDITOR_GET("editors/3d_gizmos/gizmo_colors/joint"));
+	create_material("joint_body_a_material", EDITOR_GET("editors/3d_gizmos/gizmo_colors/joint_body_a"));
+	create_material("joint_body_b_material", EDITOR_GET("editors/3d_gizmos/gizmo_colors/joint_body_b"));
+
+	update_timer = memnew(Timer);
+	update_timer->set_name("JointGizmoUpdateTimer");
+	update_timer->set_wait_time(1.0 / 120.0);
+	update_timer->connect("timeout", callable_mp(this, &Joint3DGizmoPlugin::incremental_update_gizmos));
+	update_timer->set_autostart(true);
+	callable_mp((Node *)EditorNode::get_singleton(), &Node::add_child).call_deferred(update_timer, false, Node::INTERNAL_MODE_DISABLED);
+}
+
+void Joint3DGizmoPlugin::incremental_update_gizmos() {
+	if (!current_gizmos.is_empty()) {
+		HashSet<EditorNode3DGizmo *>::Iterator E = current_gizmos.find(last_drawn);
+		if (E) {
+			++E;
+		}
+		if (!E) {
+			E = current_gizmos.begin();
+		}
+		redraw(*E);
+		last_drawn = *E;
+	}
+}
+
+bool Joint3DGizmoPlugin::has_gizmo(Node3D *p_spatial) {
+	return Object::cast_to<Joint3D>(p_spatial) != nullptr;
+}
+
+String Joint3DGizmoPlugin::get_gizmo_name() const {
+	return "Joint3D";
+}
+
+int Joint3DGizmoPlugin::get_priority() const {
+	return -1;
+}
+
+void Joint3DGizmoPlugin::redraw(EditorNode3DGizmo *p_gizmo) {
+	Joint3D *joint = Object::cast_to<Joint3D>(p_gizmo->get_node_3d());
+
+	p_gizmo->clear();
+
+	Node3D *node_body_a = nullptr;
+	if (!joint->get_node_a().is_empty()) {
+		node_body_a = Object::cast_to<Node3D>(joint->get_node(joint->get_node_a()));
+	}
+
+	Node3D *node_body_b = nullptr;
+	if (!joint->get_node_b().is_empty()) {
+		node_body_b = Object::cast_to<Node3D>(joint->get_node(joint->get_node_b()));
+	}
+
+	if (!node_body_a && !node_body_b) {
+		return;
+	}
+
+	Ref<Material> common_material = get_material("joint_material", p_gizmo);
+	Ref<Material> body_a_material = get_material("joint_body_a_material", p_gizmo);
+	Ref<Material> body_b_material = get_material("joint_body_b_material", p_gizmo);
+
+	Vector<Vector3> points;
+	Vector<Vector3> body_a_points;
+	Vector<Vector3> body_b_points;
+
+	if (Object::cast_to<PinJoint3D>(joint)) {
+		CreatePinJointGizmo(Transform3D(), points);
+		p_gizmo->add_collision_segments(points);
+		p_gizmo->add_lines(points, common_material);
+	}
+
+	HingeJoint3D *hinge = Object::cast_to<HingeJoint3D>(joint);
+	if (hinge) {
+		CreateHingeJointGizmo(
+				Transform3D(),
+				hinge->get_global_transform(),
+				node_body_a ? node_body_a->get_global_transform() : Transform3D(),
+				node_body_b ? node_body_b->get_global_transform() : Transform3D(),
+				hinge->get_param(HingeJoint3D::PARAM_LIMIT_LOWER),
+				hinge->get_param(HingeJoint3D::PARAM_LIMIT_UPPER),
+				hinge->get_flag(HingeJoint3D::FLAG_USE_LIMIT),
+				points,
+				node_body_a ? &body_a_points : nullptr,
+				node_body_b ? &body_b_points : nullptr);
+
+		p_gizmo->add_collision_segments(points);
+		p_gizmo->add_collision_segments(body_a_points);
+		p_gizmo->add_collision_segments(body_b_points);
+
+		p_gizmo->add_lines(points, common_material);
+		p_gizmo->add_lines(body_a_points, body_a_material);
+		p_gizmo->add_lines(body_b_points, body_b_material);
+	}
+
+	SliderJoint3D *slider = Object::cast_to<SliderJoint3D>(joint);
+	if (slider) {
+		CreateSliderJointGizmo(
+				Transform3D(),
+				slider->get_global_transform(),
+				node_body_a ? node_body_a->get_global_transform() : Transform3D(),
+				node_body_b ? node_body_b->get_global_transform() : Transform3D(),
+				slider->get_param(SliderJoint3D::PARAM_ANGULAR_LIMIT_LOWER),
+				slider->get_param(SliderJoint3D::PARAM_ANGULAR_LIMIT_UPPER),
+				slider->get_param(SliderJoint3D::PARAM_LINEAR_LIMIT_LOWER),
+				slider->get_param(SliderJoint3D::PARAM_LINEAR_LIMIT_UPPER),
+				points,
+				node_body_a ? &body_a_points : nullptr,
+				node_body_b ? &body_b_points : nullptr);
+
+		p_gizmo->add_collision_segments(points);
+		p_gizmo->add_collision_segments(body_a_points);
+		p_gizmo->add_collision_segments(body_b_points);
+
+		p_gizmo->add_lines(points, common_material);
+		p_gizmo->add_lines(body_a_points, body_a_material);
+		p_gizmo->add_lines(body_b_points, body_b_material);
+	}
+
+	ConeTwistJoint3D *cone = Object::cast_to<ConeTwistJoint3D>(joint);
+	if (cone) {
+		CreateConeTwistJointGizmo(
+				Transform3D(),
+				cone->get_global_transform(),
+				node_body_a ? node_body_a->get_global_transform() : Transform3D(),
+				node_body_b ? node_body_b->get_global_transform() : Transform3D(),
+				cone->get_param(ConeTwistJoint3D::PARAM_SWING_SPAN),
+				cone->get_param(ConeTwistJoint3D::PARAM_TWIST_SPAN),
+				node_body_a ? &body_a_points : nullptr,
+				node_body_b ? &body_b_points : nullptr);
+
+		p_gizmo->add_collision_segments(body_a_points);
+		p_gizmo->add_collision_segments(body_b_points);
+
+		p_gizmo->add_lines(body_a_points, body_a_material);
+		p_gizmo->add_lines(body_b_points, body_b_material);
+	}
+
+	Generic6DOFJoint3D *gen = Object::cast_to<Generic6DOFJoint3D>(joint);
+	if (gen) {
+		CreateGeneric6DOFJointGizmo(
+				Transform3D(),
+				gen->get_global_transform(),
+				node_body_a ? node_body_a->get_global_transform() : Transform3D(),
+				node_body_b ? node_body_b->get_global_transform() : Transform3D(),
+
+				gen->get_param_x(Generic6DOFJoint3D::PARAM_ANGULAR_LOWER_LIMIT),
+				gen->get_param_x(Generic6DOFJoint3D::PARAM_ANGULAR_UPPER_LIMIT),
+				gen->get_param_x(Generic6DOFJoint3D::PARAM_LINEAR_LOWER_LIMIT),
+				gen->get_param_x(Generic6DOFJoint3D::PARAM_LINEAR_UPPER_LIMIT),
+				gen->get_flag_x(Generic6DOFJoint3D::FLAG_ENABLE_ANGULAR_LIMIT),
+				gen->get_flag_x(Generic6DOFJoint3D::FLAG_ENABLE_LINEAR_LIMIT),
+
+				gen->get_param_y(Generic6DOFJoint3D::PARAM_ANGULAR_LOWER_LIMIT),
+				gen->get_param_y(Generic6DOFJoint3D::PARAM_ANGULAR_UPPER_LIMIT),
+				gen->get_param_y(Generic6DOFJoint3D::PARAM_LINEAR_LOWER_LIMIT),
+				gen->get_param_y(Generic6DOFJoint3D::PARAM_LINEAR_UPPER_LIMIT),
+				gen->get_flag_y(Generic6DOFJoint3D::FLAG_ENABLE_ANGULAR_LIMIT),
+				gen->get_flag_y(Generic6DOFJoint3D::FLAG_ENABLE_LINEAR_LIMIT),
+
+				gen->get_param_z(Generic6DOFJoint3D::PARAM_ANGULAR_LOWER_LIMIT),
+				gen->get_param_z(Generic6DOFJoint3D::PARAM_ANGULAR_UPPER_LIMIT),
+				gen->get_param_z(Generic6DOFJoint3D::PARAM_LINEAR_LOWER_LIMIT),
+				gen->get_param_z(Generic6DOFJoint3D::PARAM_LINEAR_UPPER_LIMIT),
+				gen->get_flag_z(Generic6DOFJoint3D::FLAG_ENABLE_ANGULAR_LIMIT),
+				gen->get_flag_z(Generic6DOFJoint3D::FLAG_ENABLE_LINEAR_LIMIT),
+
+				points,
+				node_body_a ? &body_a_points : nullptr,
+				node_body_a ? &body_b_points : nullptr);
+
+		p_gizmo->add_collision_segments(points);
+		p_gizmo->add_collision_segments(body_a_points);
+		p_gizmo->add_collision_segments(body_b_points);
+
+		p_gizmo->add_lines(points, common_material);
+		p_gizmo->add_lines(body_a_points, body_a_material);
+		p_gizmo->add_lines(body_b_points, body_b_material);
+	}
+}
+
+void Joint3DGizmoPlugin::CreatePinJointGizmo(const Transform3D &p_offset, Vector<Vector3> &r_cursor_points) {
+	float cs = 0.25;
+
+	r_cursor_points.push_back(p_offset.translated_local(Vector3(+cs, 0, 0)).origin);
+	r_cursor_points.push_back(p_offset.translated_local(Vector3(-cs, 0, 0)).origin);
+	r_cursor_points.push_back(p_offset.translated_local(Vector3(0, +cs, 0)).origin);
+	r_cursor_points.push_back(p_offset.translated_local(Vector3(0, -cs, 0)).origin);
+	r_cursor_points.push_back(p_offset.translated_local(Vector3(0, 0, +cs)).origin);
+	r_cursor_points.push_back(p_offset.translated_local(Vector3(0, 0, -cs)).origin);
+}
+
+void Joint3DGizmoPlugin::CreateHingeJointGizmo(const Transform3D &p_offset, const Transform3D &p_trs_joint, const Transform3D &p_trs_body_a, const Transform3D &p_trs_body_b, real_t p_limit_lower, real_t p_limit_upper, bool p_use_limit, Vector<Vector3> &r_common_points, Vector<Vector3> *r_body_a_points, Vector<Vector3> *r_body_b_points) {
+	r_common_points.push_back(p_offset.translated_local(Vector3(0, 0, 0.5)).origin);
+	r_common_points.push_back(p_offset.translated_local(Vector3(0, 0, -0.5)).origin);
+
+	if (!p_use_limit) {
+		p_limit_upper = -1;
+		p_limit_lower = 0;
+	}
+
+	if (r_body_a_points) {
+		JointGizmosDrawer::draw_circle(Vector3::AXIS_Z,
+				BODY_A_RADIUS,
+				p_offset,
+				JointGizmosDrawer::look_body_toward_z(p_trs_joint, p_trs_body_a),
+				p_limit_lower,
+				p_limit_upper,
+				*r_body_a_points);
+	}
+
+	if (r_body_b_points) {
+		JointGizmosDrawer::draw_circle(Vector3::AXIS_Z,
+				BODY_B_RADIUS,
+				p_offset,
+				JointGizmosDrawer::look_body_toward_z(p_trs_joint, p_trs_body_b),
+				p_limit_lower,
+				p_limit_upper,
+				*r_body_b_points);
+	}
+}
+
+void Joint3DGizmoPlugin::CreateSliderJointGizmo(const Transform3D &p_offset, const Transform3D &p_trs_joint, const Transform3D &p_trs_body_a, const Transform3D &p_trs_body_b, real_t p_angular_limit_lower, real_t p_angular_limit_upper, real_t p_linear_limit_lower, real_t p_linear_limit_upper, Vector<Vector3> &r_points, Vector<Vector3> *r_body_a_points, Vector<Vector3> *r_body_b_points) {
+	p_linear_limit_lower = -p_linear_limit_lower;
+	p_linear_limit_upper = -p_linear_limit_upper;
+
+	float cs = 0.25;
+	r_points.push_back(p_offset.translated_local(Vector3(0, 0, 0.5)).origin);
+	r_points.push_back(p_offset.translated_local(Vector3(0, 0, -0.5)).origin);
+
+	if (p_linear_limit_lower >= p_linear_limit_upper) {
+		r_points.push_back(p_offset.translated_local(Vector3(p_linear_limit_upper, 0, 0)).origin);
+		r_points.push_back(p_offset.translated_local(Vector3(p_linear_limit_lower, 0, 0)).origin);
+
+		r_points.push_back(p_offset.translated_local(Vector3(p_linear_limit_upper, -cs, -cs)).origin);
+		r_points.push_back(p_offset.translated_local(Vector3(p_linear_limit_upper, -cs, cs)).origin);
+		r_points.push_back(p_offset.translated_local(Vector3(p_linear_limit_upper, -cs, cs)).origin);
+		r_points.push_back(p_offset.translated_local(Vector3(p_linear_limit_upper, cs, cs)).origin);
+		r_points.push_back(p_offset.translated_local(Vector3(p_linear_limit_upper, cs, cs)).origin);
+		r_points.push_back(p_offset.translated_local(Vector3(p_linear_limit_upper, cs, -cs)).origin);
+		r_points.push_back(p_offset.translated_local(Vector3(p_linear_limit_upper, cs, -cs)).origin);
+		r_points.push_back(p_offset.translated_local(Vector3(p_linear_limit_upper, -cs, -cs)).origin);
+
+		r_points.push_back(p_offset.translated_local(Vector3(p_linear_limit_lower, -cs, -cs)).origin);
+		r_points.push_back(p_offset.translated_local(Vector3(p_linear_limit_lower, -cs, cs)).origin);
+		r_points.push_back(p_offset.translated_local(Vector3(p_linear_limit_lower, -cs, cs)).origin);
+		r_points.push_back(p_offset.translated_local(Vector3(p_linear_limit_lower, cs, cs)).origin);
+		r_points.push_back(p_offset.translated_local(Vector3(p_linear_limit_lower, cs, cs)).origin);
+		r_points.push_back(p_offset.translated_local(Vector3(p_linear_limit_lower, cs, -cs)).origin);
+		r_points.push_back(p_offset.translated_local(Vector3(p_linear_limit_lower, cs, -cs)).origin);
+		r_points.push_back(p_offset.translated_local(Vector3(p_linear_limit_lower, -cs, -cs)).origin);
+
+	} else {
+		r_points.push_back(p_offset.translated_local(Vector3(+cs * 2, 0, 0)).origin);
+		r_points.push_back(p_offset.translated_local(Vector3(-cs * 2, 0, 0)).origin);
+	}
+
+	if (r_body_a_points) {
+		JointGizmosDrawer::draw_circle(
+				Vector3::AXIS_X,
+				BODY_A_RADIUS,
+				p_offset,
+				JointGizmosDrawer::look_body_toward(Vector3::AXIS_X, p_trs_joint, p_trs_body_a),
+				p_angular_limit_lower,
+				p_angular_limit_upper,
+				*r_body_a_points);
+	}
+
+	if (r_body_b_points) {
+		JointGizmosDrawer::draw_circle(
+				Vector3::AXIS_X,
+				BODY_B_RADIUS,
+				p_offset,
+				JointGizmosDrawer::look_body_toward(Vector3::AXIS_X, p_trs_joint, p_trs_body_b),
+				p_angular_limit_lower,
+				p_angular_limit_upper,
+				*r_body_b_points,
+				true);
+	}
+}
+
+void Joint3DGizmoPlugin::CreateConeTwistJointGizmo(const Transform3D &p_offset, const Transform3D &p_trs_joint, const Transform3D &p_trs_body_a, const Transform3D &p_trs_body_b, real_t p_swing, real_t p_twist, Vector<Vector3> *r_body_a_points, Vector<Vector3> *r_body_b_points) {
+	if (r_body_a_points) {
+		JointGizmosDrawer::draw_cone(
+				p_offset,
+				JointGizmosDrawer::look_body(p_trs_joint, p_trs_body_a),
+				p_swing,
+				p_twist,
+				*r_body_a_points);
+	}
+
+	if (r_body_b_points) {
+		JointGizmosDrawer::draw_cone(
+				p_offset,
+				JointGizmosDrawer::look_body(p_trs_joint, p_trs_body_b),
+				p_swing,
+				p_twist,
+				*r_body_b_points);
+	}
+}
+
+void Joint3DGizmoPlugin::CreateGeneric6DOFJointGizmo(
+		const Transform3D &p_offset,
+		const Transform3D &p_trs_joint,
+		const Transform3D &p_trs_body_a,
+		const Transform3D &p_trs_body_b,
+		real_t p_angular_limit_lower_x,
+		real_t p_angular_limit_upper_x,
+		real_t p_linear_limit_lower_x,
+		real_t p_linear_limit_upper_x,
+		bool p_enable_angular_limit_x,
+		bool p_enable_linear_limit_x,
+		real_t p_angular_limit_lower_y,
+		real_t p_angular_limit_upper_y,
+		real_t p_linear_limit_lower_y,
+		real_t p_linear_limit_upper_y,
+		bool p_enable_angular_limit_y,
+		bool p_enable_linear_limit_y,
+		real_t p_angular_limit_lower_z,
+		real_t p_angular_limit_upper_z,
+		real_t p_linear_limit_lower_z,
+		real_t p_linear_limit_upper_z,
+		bool p_enable_angular_limit_z,
+		bool p_enable_linear_limit_z,
+		Vector<Vector3> &r_points,
+		Vector<Vector3> *r_body_a_points,
+		Vector<Vector3> *r_body_b_points) {
+	float cs = 0.25;
+
+	for (int ax = 0; ax < 3; ax++) {
+		float ll = 0;
+		float ul = 0;
+		float lll = 0;
+		float lul = 0;
+
+		int a1 = 0;
+		int a2 = 0;
+		int a3 = 0;
+		bool enable_ang = false;
+		bool enable_lin = false;
+
+		switch (ax) {
+			case 0:
+				ll = p_angular_limit_lower_x;
+				ul = p_angular_limit_upper_x;
+				lll = -p_linear_limit_lower_x;
+				lul = -p_linear_limit_upper_x;
+				enable_ang = p_enable_angular_limit_x;
+				enable_lin = p_enable_linear_limit_x;
+				a1 = 0;
+				a2 = 1;
+				a3 = 2;
+				break;
+			case 1:
+				ll = p_angular_limit_lower_y;
+				ul = p_angular_limit_upper_y;
+				lll = -p_linear_limit_lower_y;
+				lul = -p_linear_limit_upper_y;
+				enable_ang = p_enable_angular_limit_y;
+				enable_lin = p_enable_linear_limit_y;
+				a1 = 1;
+				a2 = 2;
+				a3 = 0;
+				break;
+			case 2:
+				ll = p_angular_limit_lower_z;
+				ul = p_angular_limit_upper_z;
+				lll = -p_linear_limit_lower_z;
+				lul = -p_linear_limit_upper_z;
+				enable_ang = p_enable_angular_limit_z;
+				enable_lin = p_enable_linear_limit_z;
+				a1 = 2;
+				a2 = 0;
+				a3 = 1;
+				break;
+		}
+
+#define ADD_VTX(x, y, z)                                         \
+	{                                                            \
+		Vector3 v;                                               \
+		v[a1] = (x);                                             \
+		v[a2] = (y);                                             \
+		v[a3] = (z);                                             \
+		r_points.push_back(p_offset.translated_local(v).origin); \
+	}
+
+		if (enable_lin && lll >= lul) {
+			ADD_VTX(lul, 0, 0);
+			ADD_VTX(lll, 0, 0);
+
+			ADD_VTX(lul, -cs, -cs);
+			ADD_VTX(lul, -cs, cs);
+			ADD_VTX(lul, -cs, cs);
+			ADD_VTX(lul, cs, cs);
+			ADD_VTX(lul, cs, cs);
+			ADD_VTX(lul, cs, -cs);
+			ADD_VTX(lul, cs, -cs);
+			ADD_VTX(lul, -cs, -cs);
+
+			ADD_VTX(lll, -cs, -cs);
+			ADD_VTX(lll, -cs, cs);
+			ADD_VTX(lll, -cs, cs);
+			ADD_VTX(lll, cs, cs);
+			ADD_VTX(lll, cs, cs);
+			ADD_VTX(lll, cs, -cs);
+			ADD_VTX(lll, cs, -cs);
+			ADD_VTX(lll, -cs, -cs);
+
+		} else {
+			ADD_VTX(+cs * 2, 0, 0);
+			ADD_VTX(-cs * 2, 0, 0);
+		}
+
+		if (!enable_ang) {
+			ll = 0;
+			ul = -1;
+		}
+
+		if (r_body_a_points) {
+			JointGizmosDrawer::draw_circle(
+					static_cast<Vector3::Axis>(ax),
+					BODY_A_RADIUS,
+					p_offset,
+					JointGizmosDrawer::look_body_toward(static_cast<Vector3::Axis>(ax), p_trs_joint, p_trs_body_a),
+					ll,
+					ul,
+					*r_body_a_points,
+					true);
+		}
+
+		if (r_body_b_points) {
+			JointGizmosDrawer::draw_circle(
+					static_cast<Vector3::Axis>(ax),
+					BODY_B_RADIUS,
+					p_offset,
+					JointGizmosDrawer::look_body_toward(static_cast<Vector3::Axis>(ax), p_trs_joint, p_trs_body_b),
+					ll,
+					ul,
+					*r_body_b_points);
+		}
+	}
+
+#undef ADD_VTX
+}

engine/editor/plugins/gizmos/joint_3d_gizmo_plugin.h

@@ -0,0 +1,99 @@
+/**************************************************************************/
+/*  joint_3d_gizmo_plugin.h                                               */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef JOINT_3D_GIZMO_PLUGIN_H
+#define JOINT_3D_GIZMO_PLUGIN_H
+
+#include "editor/plugins/node_3d_editor_gizmos.h"
+
+class Joint3DGizmoPlugin : public EditorNode3DGizmoPlugin {
+	GDCLASS(Joint3DGizmoPlugin, EditorNode3DGizmoPlugin);
+
+	Timer *update_timer = nullptr;
+	EditorNode3DGizmo *last_drawn = nullptr;
+
+	void incremental_update_gizmos();
+
+public:
+	bool has_gizmo(Node3D *p_spatial) override;
+	String get_gizmo_name() const override;
+	int get_priority() const override;
+	void redraw(EditorNode3DGizmo *p_gizmo) override;
+
+	static void CreatePinJointGizmo(const Transform3D &p_offset, Vector<Vector3> &r_cursor_points);
+	static void CreateHingeJointGizmo(const Transform3D &p_offset, const Transform3D &p_trs_joint, const Transform3D &p_trs_body_a, const Transform3D &p_trs_body_b, real_t p_limit_lower, real_t p_limit_upper, bool p_use_limit, Vector<Vector3> &r_common_points, Vector<Vector3> *r_body_a_points, Vector<Vector3> *r_body_b_points);
+	static void CreateSliderJointGizmo(const Transform3D &p_offset, const Transform3D &p_trs_joint, const Transform3D &p_trs_body_a, const Transform3D &p_trs_body_b, real_t p_angular_limit_lower, real_t p_angular_limit_upper, real_t p_linear_limit_lower, real_t p_linear_limit_upper, Vector<Vector3> &r_points, Vector<Vector3> *r_body_a_points, Vector<Vector3> *r_body_b_points);
+	static void CreateConeTwistJointGizmo(const Transform3D &p_offset, const Transform3D &p_trs_joint, const Transform3D &p_trs_body_a, const Transform3D &p_trs_body_b, real_t p_swing, real_t p_twist, Vector<Vector3> *r_body_a_points, Vector<Vector3> *r_body_b_points);
+	static void CreateGeneric6DOFJointGizmo(
+			const Transform3D &p_offset,
+			const Transform3D &p_trs_joint,
+			const Transform3D &p_trs_body_a,
+			const Transform3D &p_trs_body_b,
+			real_t p_angular_limit_lower_x,
+			real_t p_angular_limit_upper_x,
+			real_t p_linear_limit_lower_x,
+			real_t p_linear_limit_upper_x,
+			bool p_enable_angular_limit_x,
+			bool p_enable_linear_limit_x,
+			real_t p_angular_limit_lower_y,
+			real_t p_angular_limit_upper_y,
+			real_t p_linear_limit_lower_y,
+			real_t p_linear_limit_upper_y,
+			bool p_enable_angular_limit_y,
+			bool p_enable_linear_limit_y,
+			real_t p_angular_limit_lower_z,
+			real_t p_angular_limit_upper_z,
+			real_t p_linear_limit_lower_z,
+			real_t p_linear_limit_upper_z,
+			bool p_enable_angular_limit_z,
+			bool p_enable_linear_limit_z,
+			Vector<Vector3> &r_points,
+			Vector<Vector3> *r_body_a_points,
+			Vector<Vector3> *r_body_b_points);
+
+	Joint3DGizmoPlugin();
+};
+
+class JointGizmosDrawer {
+public:
+	static Basis look_body(const Transform3D &p_joint_transform, const Transform3D &p_body_transform);
+	static Basis look_body_toward(Vector3::Axis p_axis, const Transform3D &joint_transform, const Transform3D &body_transform);
+	static Basis look_body_toward_x(const Transform3D &p_joint_transform, const Transform3D &p_body_transform);
+	static Basis look_body_toward_y(const Transform3D &p_joint_transform, const Transform3D &p_body_transform);
+	/// Special function just used for physics joints, it returns a basis constrained toward Joint Z axis
+	/// with axis X and Y that are looking toward the body and oriented toward up
+	static Basis look_body_toward_z(const Transform3D &p_joint_transform, const Transform3D &p_body_transform);
+
+	// Draw circle around p_axis
+	static void draw_circle(Vector3::Axis p_axis, real_t p_radius, const Transform3D &p_offset, const Basis &p_base, real_t p_limit_lower, real_t p_limit_upper, Vector<Vector3> &r_points, bool p_inverse = false);
+	static void draw_cone(const Transform3D &p_offset, const Basis &p_base, real_t p_swing, real_t p_twist, Vector<Vector3> &r_points);
+};
+
+#endif // JOINT_3D_GIZMO_PLUGIN_H

engine/editor/plugins/gizmos/label_3d_gizmo_plugin.cpp

@@ -0,0 +1,63 @@
+/**************************************************************************/
+/*  label_3d_gizmo_plugin.cpp                                             */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#include "label_3d_gizmo_plugin.h"
+
+#include "scene/3d/label_3d.h"
+
+Label3DGizmoPlugin::Label3DGizmoPlugin() {
+}
+
+bool Label3DGizmoPlugin::has_gizmo(Node3D *p_spatial) {
+	return Object::cast_to<Label3D>(p_spatial) != nullptr;
+}
+
+String Label3DGizmoPlugin::get_gizmo_name() const {
+	return "Label3D";
+}
+
+int Label3DGizmoPlugin::get_priority() const {
+	return -1;
+}
+
+bool Label3DGizmoPlugin::can_be_hidden() const {
+	return false;
+}
+
+void Label3DGizmoPlugin::redraw(EditorNode3DGizmo *p_gizmo) {
+	Label3D *label = Object::cast_to<Label3D>(p_gizmo->get_node_3d());
+
+	p_gizmo->clear();
+
+	Ref<TriangleMesh> tm = label->generate_triangle_mesh();
+	if (tm.is_valid()) {
+		p_gizmo->add_collision_triangles(tm);
+	}
+}

engine/editor/plugins/gizmos/label_3d_gizmo_plugin.h

@@ -0,0 +1,49 @@
+/**************************************************************************/
+/*  label_3d_gizmo_plugin.h                                               */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef LABEL_3D_GIZMO_PLUGIN_H
+#define LABEL_3D_GIZMO_PLUGIN_H
+
+#include "editor/plugins/node_3d_editor_gizmos.h"
+
+class Label3DGizmoPlugin : public EditorNode3DGizmoPlugin {
+	GDCLASS(Label3DGizmoPlugin, EditorNode3DGizmoPlugin);
+
+public:
+	bool has_gizmo(Node3D *p_spatial) override;
+	String get_gizmo_name() const override;
+	int get_priority() const override;
+	bool can_be_hidden() const override;
+	void redraw(EditorNode3DGizmo *p_gizmo) override;
+
+	Label3DGizmoPlugin();
+};
+
+#endif // LABEL_3D_GIZMO_PLUGIN_H

engine/editor/plugins/gizmos/light_3d_gizmo_plugin.cpp

@@ -0,0 +1,316 @@
+/**************************************************************************/
+/*  light_3d_gizmo_plugin.cpp                                             */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#include "light_3d_gizmo_plugin.h"
+
+#include "editor/editor_node.h"
+#include "editor/editor_string_names.h"
+#include "editor/editor_undo_redo_manager.h"
+#include "editor/plugins/node_3d_editor_plugin.h"
+#include "scene/3d/light_3d.h"
+
+Light3DGizmoPlugin::Light3DGizmoPlugin() {
+	// Enable vertex colors for the materials below as the gizmo color depends on the light color.
+	create_material("lines_primary", Color(1, 1, 1), false, false, true);
+	create_material("lines_secondary", Color(1, 1, 1, 0.35), false, false, true);
+	create_material("lines_billboard", Color(1, 1, 1), true, false, true);
+
+	create_icon_material("light_directional_icon", EditorNode::get_singleton()->get_editor_theme()->get_icon(SNAME("GizmoDirectionalLight"), EditorStringName(EditorIcons)));
+	create_icon_material("light_omni_icon", EditorNode::get_singleton()->get_editor_theme()->get_icon(SNAME("GizmoLight"), EditorStringName(EditorIcons)));
+	create_icon_material("light_spot_icon", EditorNode::get_singleton()->get_editor_theme()->get_icon(SNAME("GizmoSpotLight"), EditorStringName(EditorIcons)));
+
+	create_handle_material("handles");
+	create_handle_material("handles_billboard", true);
+}
+
+bool Light3DGizmoPlugin::has_gizmo(Node3D *p_spatial) {
+	return Object::cast_to<Light3D>(p_spatial) != nullptr;
+}
+
+String Light3DGizmoPlugin::get_gizmo_name() const {
+	return "Light3D";
+}
+
+int Light3DGizmoPlugin::get_priority() const {
+	return -1;
+}
+
+String Light3DGizmoPlugin::get_handle_name(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const {
+	if (p_id == 0) {
+		return "Radius";
+	} else {
+		return "Aperture";
+	}
+}
+
+Variant Light3DGizmoPlugin::get_handle_value(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const {
+	Light3D *light = Object::cast_to<Light3D>(p_gizmo->get_node_3d());
+	if (p_id == 0) {
+		return light->get_param(Light3D::PARAM_RANGE);
+	}
+	if (p_id == 1) {
+		return light->get_param(Light3D::PARAM_SPOT_ANGLE);
+	}
+
+	return Variant();
+}
+
+void Light3DGizmoPlugin::set_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, Camera3D *p_camera, const Point2 &p_point) {
+	Light3D *light = Object::cast_to<Light3D>(p_gizmo->get_node_3d());
+	Transform3D gt = light->get_global_transform();
+	Transform3D gi = gt.affine_inverse();
+
+	Vector3 ray_from = p_camera->project_ray_origin(p_point);
+	Vector3 ray_dir = p_camera->project_ray_normal(p_point);
+
+	Vector3 s[2] = { gi.xform(ray_from), gi.xform(ray_from + ray_dir * 4096) };
+	if (p_id == 0) {
+		if (Object::cast_to<SpotLight3D>(light)) {
+			Vector3 ra, rb;
+			Geometry3D::get_closest_points_between_segments(Vector3(), Vector3(0, 0, -4096), s[0], s[1], ra, rb);
+
+			float d = -ra.z;
+			if (Node3DEditor::get_singleton()->is_snap_enabled()) {
+				d = Math::snapped(d, Node3DEditor::get_singleton()->get_translate_snap());
+			}
+
+			if (d <= 0) { // Equal is here for negative zero.
+				d = 0;
+			}
+
+			light->set_param(Light3D::PARAM_RANGE, d);
+		} else if (Object::cast_to<OmniLight3D>(light)) {
+			Plane cp = Plane(p_camera->get_transform().basis.get_column(2), gt.origin);
+
+			Vector3 inters;
+			if (cp.intersects_ray(ray_from, ray_dir, &inters)) {
+				float r = inters.distance_to(gt.origin);
+				if (Node3DEditor::get_singleton()->is_snap_enabled()) {
+					r = Math::snapped(r, Node3DEditor::get_singleton()->get_translate_snap());
+				}
+
+				light->set_param(Light3D::PARAM_RANGE, r);
+			}
+		}
+
+	} else if (p_id == 1) {
+		float a = _find_closest_angle_to_half_pi_arc(s[0], s[1], light->get_param(Light3D::PARAM_RANGE), gt);
+		light->set_param(Light3D::PARAM_SPOT_ANGLE, CLAMP(a, 0.01, 89.99));
+	}
+}
+
+void Light3DGizmoPlugin::commit_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, const Variant &p_restore, bool p_cancel) {
+	Light3D *light = Object::cast_to<Light3D>(p_gizmo->get_node_3d());
+	if (p_cancel) {
+		light->set_param(p_id == 0 ? Light3D::PARAM_RANGE : Light3D::PARAM_SPOT_ANGLE, p_restore);
+
+	} else if (p_id == 0) {
+		EditorUndoRedoManager *ur = EditorUndoRedoManager::get_singleton();
+		ur->create_action(TTR("Change Light Radius"));
+		ur->add_do_method(light, "set_param", Light3D::PARAM_RANGE, light->get_param(Light3D::PARAM_RANGE));
+		ur->add_undo_method(light, "set_param", Light3D::PARAM_RANGE, p_restore);
+		ur->commit_action();
+	} else if (p_id == 1) {
+		EditorUndoRedoManager *ur = EditorUndoRedoManager::get_singleton();
+		ur->create_action(TTR("Change Light Radius"));
+		ur->add_do_method(light, "set_param", Light3D::PARAM_SPOT_ANGLE, light->get_param(Light3D::PARAM_SPOT_ANGLE));
+		ur->add_undo_method(light, "set_param", Light3D::PARAM_SPOT_ANGLE, p_restore);
+		ur->commit_action();
+	}
+}
+
+void Light3DGizmoPlugin::redraw(EditorNode3DGizmo *p_gizmo) {
+	Light3D *light = Object::cast_to<Light3D>(p_gizmo->get_node_3d());
+
+	Color color = light->get_color().srgb_to_linear() * light->get_correlated_color().srgb_to_linear();
+	color = color.linear_to_srgb();
+	// Make the gizmo color as bright as possible for better visibility
+	color.set_hsv(color.get_h(), color.get_s(), 1);
+
+	p_gizmo->clear();
+
+	if (Object::cast_to<DirectionalLight3D>(light)) {
+		if (p_gizmo->is_selected()) {
+			Ref<Material> material = get_material("lines_primary", p_gizmo);
+
+			const int arrow_points = 7;
+			const float arrow_length = 1.5;
+
+			Vector3 arrow[arrow_points] = {
+				Vector3(0, 0, -1),
+				Vector3(0, 0.8, 0),
+				Vector3(0, 0.3, 0),
+				Vector3(0, 0.3, arrow_length),
+				Vector3(0, -0.3, arrow_length),
+				Vector3(0, -0.3, 0),
+				Vector3(0, -0.8, 0)
+			};
+
+			int arrow_sides = 2;
+
+			Vector<Vector3> lines;
+
+			for (int i = 0; i < arrow_sides; i++) {
+				for (int j = 0; j < arrow_points; j++) {
+					Basis ma(Vector3(0, 0, 1), Math_PI * i / arrow_sides);
+
+					Vector3 v1 = arrow[j] - Vector3(0, 0, arrow_length);
+					Vector3 v2 = arrow[(j + 1) % arrow_points] - Vector3(0, 0, arrow_length);
+
+					lines.push_back(ma.xform(v1));
+					lines.push_back(ma.xform(v2));
+				}
+			}
+
+			p_gizmo->add_lines(lines, material, false, color);
+		}
+
+		Ref<Material> icon = get_material("light_directional_icon", p_gizmo);
+		p_gizmo->add_unscaled_billboard(icon, 0.05, color);
+	}
+
+	if (Object::cast_to<OmniLight3D>(light)) {
+		if (p_gizmo->is_selected()) {
+			// Use both a billboard circle and 3 non-billboard circles for a better sphere-like representation
+			const Ref<Material> lines_material = get_material("lines_secondary", p_gizmo);
+			const Ref<Material> lines_billboard_material = get_material("lines_billboard", p_gizmo);
+
+			OmniLight3D *on = Object::cast_to<OmniLight3D>(light);
+			const float r = on->get_param(Light3D::PARAM_RANGE);
+			Vector<Vector3> points;
+			Vector<Vector3> points_billboard;
+
+			for (int i = 0; i < 120; i++) {
+				// Create a circle
+				const float ra = Math::deg_to_rad((float)(i * 3));
+				const float rb = Math::deg_to_rad((float)((i + 1) * 3));
+				const Point2 a = Vector2(Math::sin(ra), Math::cos(ra)) * r;
+				const Point2 b = Vector2(Math::sin(rb), Math::cos(rb)) * r;
+
+				// Draw axis-aligned circles
+				points.push_back(Vector3(a.x, 0, a.y));
+				points.push_back(Vector3(b.x, 0, b.y));
+				points.push_back(Vector3(0, a.x, a.y));
+				points.push_back(Vector3(0, b.x, b.y));
+				points.push_back(Vector3(a.x, a.y, 0));
+				points.push_back(Vector3(b.x, b.y, 0));
+
+				// Draw a billboarded circle
+				points_billboard.push_back(Vector3(a.x, a.y, 0));
+				points_billboard.push_back(Vector3(b.x, b.y, 0));
+			}
+
+			p_gizmo->add_lines(points, lines_material, true, color);
+			p_gizmo->add_lines(points_billboard, lines_billboard_material, true, color);
+
+			Vector<Vector3> handles;
+			handles.push_back(Vector3(r, 0, 0));
+			p_gizmo->add_handles(handles, get_material("handles_billboard"), Vector<int>(), true);
+		}
+
+		const Ref<Material> icon = get_material("light_omni_icon", p_gizmo);
+		p_gizmo->add_unscaled_billboard(icon, 0.05, color);
+	}
+
+	if (Object::cast_to<SpotLight3D>(light)) {
+		if (p_gizmo->is_selected()) {
+			const Ref<Material> material_primary = get_material("lines_primary", p_gizmo);
+			const Ref<Material> material_secondary = get_material("lines_secondary", p_gizmo);
+
+			Vector<Vector3> points_primary;
+			Vector<Vector3> points_secondary;
+			SpotLight3D *sl = Object::cast_to<SpotLight3D>(light);
+
+			float r = sl->get_param(Light3D::PARAM_RANGE);
+			float w = r * Math::sin(Math::deg_to_rad(sl->get_param(Light3D::PARAM_SPOT_ANGLE)));
+			float d = r * Math::cos(Math::deg_to_rad(sl->get_param(Light3D::PARAM_SPOT_ANGLE)));
+
+			for (int i = 0; i < 120; i++) {
+				// Draw a circle
+				const float ra = Math::deg_to_rad((float)(i * 3));
+				const float rb = Math::deg_to_rad((float)((i + 1) * 3));
+				const Point2 a = Vector2(Math::sin(ra), Math::cos(ra)) * w;
+				const Point2 b = Vector2(Math::sin(rb), Math::cos(rb)) * w;
+
+				points_primary.push_back(Vector3(a.x, a.y, -d));
+				points_primary.push_back(Vector3(b.x, b.y, -d));
+
+				if (i % 15 == 0) {
+					// Draw 8 lines from the cone origin to the sides of the circle
+					points_secondary.push_back(Vector3(a.x, a.y, -d));
+					points_secondary.push_back(Vector3());
+				}
+			}
+
+			points_primary.push_back(Vector3(0, 0, -r));
+			points_primary.push_back(Vector3());
+
+			p_gizmo->add_lines(points_primary, material_primary, false, color);
+			p_gizmo->add_lines(points_secondary, material_secondary, false, color);
+
+			Vector<Vector3> handles = {
+				Vector3(0, 0, -r),
+				Vector3(w, 0, -d)
+			};
+
+			p_gizmo->add_handles(handles, get_material("handles"));
+		}
+
+		const Ref<Material> icon = get_material("light_spot_icon", p_gizmo);
+		p_gizmo->add_unscaled_billboard(icon, 0.05, color);
+	}
+}
+
+float Light3DGizmoPlugin::_find_closest_angle_to_half_pi_arc(const Vector3 &p_from, const Vector3 &p_to, float p_arc_radius, const Transform3D &p_arc_xform) {
+	//bleh, discrete is simpler
+	static const int arc_test_points = 64;
+	float min_d = 1e20;
+	Vector3 min_p;
+
+	for (int i = 0; i < arc_test_points; i++) {
+		float a = i * Math_PI * 0.5 / arc_test_points;
+		float an = (i + 1) * Math_PI * 0.5 / arc_test_points;
+		Vector3 p = Vector3(Math::cos(a), 0, -Math::sin(a)) * p_arc_radius;
+		Vector3 n = Vector3(Math::cos(an), 0, -Math::sin(an)) * p_arc_radius;
+
+		Vector3 ra, rb;
+		Geometry3D::get_closest_points_between_segments(p, n, p_from, p_to, ra, rb);
+
+		float d = ra.distance_to(rb);
+		if (d < min_d) {
+			min_d = d;
+			min_p = ra;
+		}
+	}
+
+	//min_p = p_arc_xform.affine_inverse().xform(min_p);
+	float a = (Math_PI * 0.5) - Vector2(min_p.x, -min_p.z).angle();
+	return Math::rad_to_deg(a);
+}

engine/editor/plugins/gizmos/light_3d_gizmo_plugin.h

@@ -0,0 +1,56 @@
+/**************************************************************************/
+/*  light_3d_gizmo_plugin.h                                               */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef LIGHT_3D_GIZMO_PLUGIN_H
+#define LIGHT_3D_GIZMO_PLUGIN_H
+
+#include "editor/plugins/node_3d_editor_gizmos.h"
+
+class Light3DGizmoPlugin : public EditorNode3DGizmoPlugin {
+	GDCLASS(Light3DGizmoPlugin, EditorNode3DGizmoPlugin);
+
+private:
+	static float _find_closest_angle_to_half_pi_arc(const Vector3 &p_from, const Vector3 &p_to, float p_arc_radius, const Transform3D &p_arc_xform);
+
+public:
+	bool has_gizmo(Node3D *p_spatial) override;
+	String get_gizmo_name() const override;
+	int get_priority() const override;
+
+	String get_handle_name(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const override;
+	Variant get_handle_value(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const override;
+	void set_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, Camera3D *p_camera, const Point2 &p_point) override;
+	void commit_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, const Variant &p_restore, bool p_cancel = false) override;
+	void redraw(EditorNode3DGizmo *p_gizmo) override;
+
+	Light3DGizmoPlugin();
+};
+
+#endif // LIGHT_3D_GIZMO_PLUGIN_H

engine/editor/plugins/gizmos/lightmap_gi_gizmo_plugin.cpp

@@ -0,0 +1,216 @@
+/**************************************************************************/
+/*  lightmap_gi_gizmo_plugin.cpp                                          */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#include "lightmap_gi_gizmo_plugin.h"
+
+#include "editor/editor_node.h"
+#include "editor/editor_settings.h"
+#include "editor/editor_string_names.h"
+#include "scene/3d/lightmap_gi.h"
+
+LightmapGIGizmoPlugin::LightmapGIGizmoPlugin() {
+	Color gizmo_color = EDITOR_GET("editors/3d_gizmos/gizmo_colors/lightmap_lines");
+
+	gizmo_color.a = 0.1;
+	create_material("lightmap_lines", gizmo_color);
+
+	Ref<StandardMaterial3D> mat = memnew(StandardMaterial3D);
+	mat->set_shading_mode(StandardMaterial3D::SHADING_MODE_UNSHADED);
+	// Fade out probes when camera gets too close to them.
+	mat->set_distance_fade(StandardMaterial3D::DISTANCE_FADE_PIXEL_DITHER);
+	mat->set_distance_fade_min_distance(0.5);
+	mat->set_distance_fade_max_distance(1.5);
+	mat->set_flag(StandardMaterial3D::FLAG_ALBEDO_FROM_VERTEX_COLOR, true);
+	mat->set_flag(StandardMaterial3D::FLAG_SRGB_VERTEX_COLOR, false);
+	mat->set_flag(StandardMaterial3D::FLAG_DISABLE_FOG, true);
+
+	add_material("lightmap_probe_material", mat);
+
+	create_icon_material("baked_indirect_light_icon", EditorNode::get_singleton()->get_editor_theme()->get_icon(SNAME("GizmoLightmapGI"), EditorStringName(EditorIcons)));
+}
+
+bool LightmapGIGizmoPlugin::has_gizmo(Node3D *p_spatial) {
+	return Object::cast_to<LightmapGI>(p_spatial) != nullptr;
+}
+
+String LightmapGIGizmoPlugin::get_gizmo_name() const {
+	return "LightmapGI";
+}
+
+int LightmapGIGizmoPlugin::get_priority() const {
+	return -1;
+}
+
+void LightmapGIGizmoPlugin::redraw(EditorNode3DGizmo *p_gizmo) {
+	Ref<Material> icon = get_material("baked_indirect_light_icon", p_gizmo);
+	LightmapGI *baker = Object::cast_to<LightmapGI>(p_gizmo->get_node_3d());
+	Ref<LightmapGIData> data = baker->get_light_data();
+
+	p_gizmo->clear();
+
+	p_gizmo->add_unscaled_billboard(icon, 0.05);
+
+	if (data.is_null() || !p_gizmo->is_selected()) {
+		return;
+	}
+
+	Ref<Material> material_lines = get_material("lightmap_lines", p_gizmo);
+	Ref<Material> material_probes = get_material("lightmap_probe_material", p_gizmo);
+
+	Vector<Vector3> lines;
+	HashSet<Vector2i> lines_found;
+
+	Vector<Vector3> points = data->get_capture_points();
+	if (points.size() == 0) {
+		return;
+	}
+	Vector<Color> sh = data->get_capture_sh();
+	if (sh.size() != points.size() * 9) {
+		return;
+	}
+
+	Vector<int> tetrahedrons = data->get_capture_tetrahedra();
+
+	for (int i = 0; i < tetrahedrons.size(); i += 4) {
+		for (int j = 0; j < 4; j++) {
+			for (int k = j + 1; k < 4; k++) {
+				Vector2i pair;
+				pair.x = tetrahedrons[i + j];
+				pair.y = tetrahedrons[i + k];
+
+				if (pair.y < pair.x) {
+					SWAP(pair.x, pair.y);
+				}
+				if (lines_found.has(pair)) {
+					continue;
+				}
+				lines_found.insert(pair);
+				lines.push_back(points[pair.x]);
+				lines.push_back(points[pair.y]);
+			}
+		}
+	}
+
+	p_gizmo->add_lines(lines, material_lines);
+
+	int stack_count = 8;
+	int sector_count = 16;
+
+	float sector_step = (Math_PI * 2.0) / sector_count;
+	float stack_step = Math_PI / stack_count;
+
+	Vector<Vector3> vertices;
+	Vector<Color> colors;
+	Vector<int> indices;
+	float radius = 0.3;
+
+	for (int p = 0; p < points.size(); p++) {
+		int vertex_base = vertices.size();
+		Vector3 sh_col[9];
+		for (int i = 0; i < 9; i++) {
+			sh_col[i].x = sh[p * 9 + i].r;
+			sh_col[i].y = sh[p * 9 + i].g;
+			sh_col[i].z = sh[p * 9 + i].b;
+		}
+
+		for (int i = 0; i <= stack_count; ++i) {
+			float stack_angle = Math_PI / 2 - i * stack_step; // starting from pi/2 to -pi/2
+			float xy = radius * Math::cos(stack_angle); // r * cos(u)
+			float z = radius * Math::sin(stack_angle); // r * sin(u)
+
+			// add (sector_count+1) vertices per stack
+			// the first and last vertices have same position and normal, but different tex coords
+			for (int j = 0; j <= sector_count; ++j) {
+				float sector_angle = j * sector_step; // starting from 0 to 2pi
+
+				// vertex position (x, y, z)
+				float x = xy * Math::cos(sector_angle); // r * cos(u) * cos(v)
+				float y = xy * Math::sin(sector_angle); // r * cos(u) * sin(v)
+
+				Vector3 n = Vector3(x, z, y);
+				vertices.push_back(points[p] + n);
+				n.normalize();
+
+				const float c1 = 0.429043;
+				const float c2 = 0.511664;
+				const float c3 = 0.743125;
+				const float c4 = 0.886227;
+				const float c5 = 0.247708;
+				Vector3 light = (c1 * sh_col[8] * (n.x * n.x - n.y * n.y) +
+						c3 * sh_col[6] * n.z * n.z +
+						c4 * sh_col[0] -
+						c5 * sh_col[6] +
+						2.0 * c1 * sh_col[4] * n.x * n.y +
+						2.0 * c1 * sh_col[7] * n.x * n.z +
+						2.0 * c1 * sh_col[5] * n.y * n.z +
+						2.0 * c2 * sh_col[3] * n.x +
+						2.0 * c2 * sh_col[1] * n.y +
+						2.0 * c2 * sh_col[2] * n.z);
+
+				colors.push_back(Color(light.x, light.y, light.z, 1));
+			}
+		}
+
+		for (int i = 0; i < stack_count; ++i) {
+			int k1 = i * (sector_count + 1); // beginning of current stack
+			int k2 = k1 + sector_count + 1; // beginning of next stack
+
+			for (int j = 0; j < sector_count; ++j, ++k1, ++k2) {
+				// 2 triangles per sector excluding first and last stacks
+				// k1 => k2 => k1+1
+				if (i != 0) {
+					indices.push_back(vertex_base + k1);
+					indices.push_back(vertex_base + k2);
+					indices.push_back(vertex_base + k1 + 1);
+				}
+
+				// k1+1 => k2 => k2+1
+				if (i != (stack_count - 1)) {
+					indices.push_back(vertex_base + k1 + 1);
+					indices.push_back(vertex_base + k2);
+					indices.push_back(vertex_base + k2 + 1);
+				}
+			}
+		}
+	}
+
+	Array array;
+	array.resize(RS::ARRAY_MAX);
+	array[RS::ARRAY_VERTEX] = vertices;
+	array[RS::ARRAY_INDEX] = indices;
+	array[RS::ARRAY_COLOR] = colors;
+
+	Ref<ArrayMesh> mesh;
+	mesh.instantiate();
+	mesh->add_surface_from_arrays(Mesh::PRIMITIVE_TRIANGLES, array, Array(), Dictionary(), 0); //no compression
+	mesh->surface_set_material(0, material_probes);
+
+	p_gizmo->add_mesh(mesh);
+}

engine/editor/plugins/gizmos/lightmap_gi_gizmo_plugin.h

@@ -0,0 +1,48 @@
+/**************************************************************************/
+/*  lightmap_gi_gizmo_plugin.h                                            */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef LIGHTMAP_GI_GIZMO_PLUGIN_H
+#define LIGHTMAP_GI_GIZMO_PLUGIN_H
+
+#include "editor/plugins/node_3d_editor_gizmos.h"
+
+class LightmapGIGizmoPlugin : public EditorNode3DGizmoPlugin {
+	GDCLASS(LightmapGIGizmoPlugin, EditorNode3DGizmoPlugin);
+
+public:
+	bool has_gizmo(Node3D *p_spatial) override;
+	String get_gizmo_name() const override;
+	int get_priority() const override;
+	void redraw(EditorNode3DGizmo *p_gizmo) override;
+
+	LightmapGIGizmoPlugin();
+};
+
+#endif // LIGHTMAP_GI_GIZMO_PLUGIN_H

engine/editor/plugins/gizmos/lightmap_probe_gizmo_plugin.cpp

@@ -0,0 +1,121 @@
+/**************************************************************************/
+/*  lightmap_probe_gizmo_plugin.cpp                                       */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#include "lightmap_probe_gizmo_plugin.h"
+
+#include "editor/editor_node.h"
+#include "editor/editor_settings.h"
+#include "editor/editor_string_names.h"
+#include "scene/3d/lightmap_probe.h"
+
+LightmapProbeGizmoPlugin::LightmapProbeGizmoPlugin() {
+	create_icon_material("lightmap_probe_icon", EditorNode::get_singleton()->get_editor_theme()->get_icon(SNAME("GizmoLightmapProbe"), EditorStringName(EditorIcons)));
+
+	Color gizmo_color = EDITOR_GET("editors/3d_gizmos/gizmo_colors/lightprobe_lines");
+
+	gizmo_color.a = 0.3;
+	create_material("lightprobe_lines", gizmo_color);
+}
+
+bool LightmapProbeGizmoPlugin::has_gizmo(Node3D *p_spatial) {
+	return Object::cast_to<LightmapProbe>(p_spatial) != nullptr;
+}
+
+String LightmapProbeGizmoPlugin::get_gizmo_name() const {
+	return "LightmapProbe";
+}
+
+int LightmapProbeGizmoPlugin::get_priority() const {
+	return -1;
+}
+
+void LightmapProbeGizmoPlugin::redraw(EditorNode3DGizmo *p_gizmo) {
+	Ref<Material> material_lines = get_material("lightprobe_lines", p_gizmo);
+
+	p_gizmo->clear();
+
+	Vector<Vector3> lines;
+
+	int stack_count = 8;
+	int sector_count = 16;
+
+	float sector_step = (Math_PI * 2.0) / sector_count;
+	float stack_step = Math_PI / stack_count;
+
+	Vector<Vector3> vertices;
+	float radius = 0.2;
+
+	for (int i = 0; i <= stack_count; ++i) {
+		float stack_angle = Math_PI / 2 - i * stack_step; // starting from pi/2 to -pi/2
+		float xy = radius * Math::cos(stack_angle); // r * cos(u)
+		float z = radius * Math::sin(stack_angle); // r * sin(u)
+
+		// add (sector_count+1) vertices per stack
+		// the first and last vertices have same position and normal, but different tex coords
+		for (int j = 0; j <= sector_count; ++j) {
+			float sector_angle = j * sector_step; // starting from 0 to 2pi
+
+			// vertex position (x, y, z)
+			float x = xy * Math::cos(sector_angle); // r * cos(u) * cos(v)
+			float y = xy * Math::sin(sector_angle); // r * cos(u) * sin(v)
+
+			Vector3 n = Vector3(x, z, y);
+			vertices.push_back(n);
+		}
+	}
+
+	for (int i = 0; i < stack_count; ++i) {
+		int k1 = i * (sector_count + 1); // beginning of current stack
+		int k2 = k1 + sector_count + 1; // beginning of next stack
+
+		for (int j = 0; j < sector_count; ++j, ++k1, ++k2) {
+			// 2 triangles per sector excluding first and last stacks
+			// k1 => k2 => k1+1
+			if (i != 0) {
+				lines.push_back(vertices[k1]);
+				lines.push_back(vertices[k2]);
+				lines.push_back(vertices[k1]);
+				lines.push_back(vertices[k1 + 1]);
+			}
+
+			if (i != (stack_count - 1)) {
+				lines.push_back(vertices[k1 + 1]);
+				lines.push_back(vertices[k2]);
+				lines.push_back(vertices[k2]);
+				lines.push_back(vertices[k2 + 1]);
+			}
+		}
+	}
+
+	const Ref<Material> icon = get_material("lightmap_probe_icon", p_gizmo);
+
+	p_gizmo->add_lines(lines, material_lines);
+	p_gizmo->add_unscaled_billboard(icon, 0.05);
+}

engine/editor/plugins/gizmos/lightmap_probe_gizmo_plugin.h

@@ -0,0 +1,48 @@
+/**************************************************************************/
+/*  lightmap_probe_gizmo_plugin.h                                         */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef LIGHTMAP_PROBE_GIZMO_PLUGIN_H
+#define LIGHTMAP_PROBE_GIZMO_PLUGIN_H
+
+#include "editor/plugins/node_3d_editor_gizmos.h"
+
+class LightmapProbeGizmoPlugin : public EditorNode3DGizmoPlugin {
+	GDCLASS(LightmapProbeGizmoPlugin, EditorNode3DGizmoPlugin);
+
+public:
+	bool has_gizmo(Node3D *p_spatial) override;
+	String get_gizmo_name() const override;
+	int get_priority() const override;
+	void redraw(EditorNode3DGizmo *p_gizmo) override;
+
+	LightmapProbeGizmoPlugin();
+};
+
+#endif // LIGHTMAP_PROBE_GIZMO_PLUGIN_H

engine/editor/plugins/gizmos/marker_3d_gizmo_plugin.cpp

@@ -0,0 +1,127 @@
+/**************************************************************************/
+/*  marker_3d_gizmo_plugin.cpp                                            */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#include "marker_3d_gizmo_plugin.h"
+
+#include "editor/editor_node.h"
+#include "editor/editor_string_names.h"
+#include "scene/3d/marker_3d.h"
+
+Marker3DGizmoPlugin::Marker3DGizmoPlugin() {
+	pos3d_mesh.instantiate();
+
+	Vector<Vector3> cursor_points;
+	Vector<Color> cursor_colors;
+	const float cs = 1.0;
+	// Add more points to create a "hard stop" in the color gradient.
+	cursor_points.push_back(Vector3(+cs, 0, 0));
+	cursor_points.push_back(Vector3());
+	cursor_points.push_back(Vector3());
+	cursor_points.push_back(Vector3(-cs, 0, 0));
+
+	cursor_points.push_back(Vector3(0, +cs, 0));
+	cursor_points.push_back(Vector3());
+	cursor_points.push_back(Vector3());
+	cursor_points.push_back(Vector3(0, -cs, 0));
+
+	cursor_points.push_back(Vector3(0, 0, +cs));
+	cursor_points.push_back(Vector3());
+	cursor_points.push_back(Vector3());
+	cursor_points.push_back(Vector3(0, 0, -cs));
+
+	// Use the axis color which is brighter for the positive axis.
+	// Use a darkened axis color for the negative axis.
+	// This makes it possible to see in which direction the Marker3D node is rotated
+	// (which can be important depending on how it's used).
+	const Color color_x = EditorNode::get_singleton()->get_editor_theme()->get_color(SNAME("axis_x_color"), EditorStringName(Editor));
+	cursor_colors.push_back(color_x);
+	cursor_colors.push_back(color_x);
+	// FIXME: Use less strong darkening factor once GH-48573 is fixed.
+	// The current darkening factor compensates for lines being too bright in the 3D editor.
+	cursor_colors.push_back(color_x.lerp(Color(0, 0, 0), 0.75));
+	cursor_colors.push_back(color_x.lerp(Color(0, 0, 0), 0.75));
+
+	const Color color_y = EditorNode::get_singleton()->get_editor_theme()->get_color(SNAME("axis_y_color"), EditorStringName(Editor));
+	cursor_colors.push_back(color_y);
+	cursor_colors.push_back(color_y);
+	cursor_colors.push_back(color_y.lerp(Color(0, 0, 0), 0.75));
+	cursor_colors.push_back(color_y.lerp(Color(0, 0, 0), 0.75));
+
+	const Color color_z = EditorNode::get_singleton()->get_editor_theme()->get_color(SNAME("axis_z_color"), EditorStringName(Editor));
+	cursor_colors.push_back(color_z);
+	cursor_colors.push_back(color_z);
+	cursor_colors.push_back(color_z.lerp(Color(0, 0, 0), 0.75));
+	cursor_colors.push_back(color_z.lerp(Color(0, 0, 0), 0.75));
+
+	Ref<StandardMaterial3D> mat = memnew(StandardMaterial3D);
+	mat->set_shading_mode(StandardMaterial3D::SHADING_MODE_UNSHADED);
+	mat->set_flag(StandardMaterial3D::FLAG_ALBEDO_FROM_VERTEX_COLOR, true);
+	mat->set_flag(StandardMaterial3D::FLAG_SRGB_VERTEX_COLOR, true);
+	mat->set_flag(StandardMaterial3D::FLAG_DISABLE_FOG, true);
+	mat->set_transparency(StandardMaterial3D::TRANSPARENCY_ALPHA);
+
+	Array d;
+	d.resize(RS::ARRAY_MAX);
+	d[Mesh::ARRAY_VERTEX] = cursor_points;
+	d[Mesh::ARRAY_COLOR] = cursor_colors;
+	pos3d_mesh->add_surface_from_arrays(Mesh::PRIMITIVE_LINES, d);
+	pos3d_mesh->surface_set_material(0, mat);
+}
+
+bool Marker3DGizmoPlugin::has_gizmo(Node3D *p_spatial) {
+	return Object::cast_to<Marker3D>(p_spatial) != nullptr;
+}
+
+String Marker3DGizmoPlugin::get_gizmo_name() const {
+	return "Marker3D";
+}
+
+int Marker3DGizmoPlugin::get_priority() const {
+	return -1;
+}
+
+void Marker3DGizmoPlugin::redraw(EditorNode3DGizmo *p_gizmo) {
+	const Marker3D *marker = Object::cast_to<Marker3D>(p_gizmo->get_node_3d());
+	const real_t extents = marker->get_gizmo_extents();
+	const Transform3D xform(Basis::from_scale(Vector3(extents, extents, extents)));
+
+	p_gizmo->clear();
+	p_gizmo->add_mesh(pos3d_mesh, Ref<Material>(), xform);
+
+	const Vector<Vector3> points = {
+		Vector3(-extents, 0, 0),
+		Vector3(+extents, 0, 0),
+		Vector3(0, -extents, 0),
+		Vector3(0, +extents, 0),
+		Vector3(0, 0, -extents),
+		Vector3(0, 0, +extents),
+	};
+	p_gizmo->add_collision_segments(points);
+}

engine/editor/plugins/gizmos/marker_3d_gizmo_plugin.h

@@ -0,0 +1,50 @@
+/**************************************************************************/
+/*  marker_3d_gizmo_plugin.h                                              */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef MARKER_3D_GIZMO_PLUGIN_H
+#define MARKER_3D_GIZMO_PLUGIN_H
+
+#include "editor/plugins/node_3d_editor_gizmos.h"
+
+class Marker3DGizmoPlugin : public EditorNode3DGizmoPlugin {
+	GDCLASS(Marker3DGizmoPlugin, EditorNode3DGizmoPlugin);
+
+	Ref<ArrayMesh> pos3d_mesh;
+
+public:
+	bool has_gizmo(Node3D *p_spatial) override;
+	String get_gizmo_name() const override;
+	int get_priority() const override;
+	void redraw(EditorNode3DGizmo *p_gizmo) override;
+
+	Marker3DGizmoPlugin();
+};
+
+#endif // MARKER_3D_GIZMO_PLUGIN_H

engine/editor/plugins/gizmos/mesh_instance_3d_gizmo_plugin.cpp

@@ -0,0 +1,87 @@
+/**************************************************************************/
+/*  mesh_instance_3d_gizmo_plugin.cpp                                     */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#include "mesh_instance_3d_gizmo_plugin.h"
+
+#include "editor/plugins/node_3d_editor_plugin.h"
+#include "scene/3d/mesh_instance_3d.h"
+#include "scene/3d/soft_body_3d.h"
+#include "scene/resources/3d/primitive_meshes.h"
+
+MeshInstance3DGizmoPlugin::MeshInstance3DGizmoPlugin() {
+}
+
+bool MeshInstance3DGizmoPlugin::has_gizmo(Node3D *p_spatial) {
+	return Object::cast_to<MeshInstance3D>(p_spatial) != nullptr && Object::cast_to<SoftBody3D>(p_spatial) == nullptr;
+}
+
+String MeshInstance3DGizmoPlugin::get_gizmo_name() const {
+	return "MeshInstance3D";
+}
+
+int MeshInstance3DGizmoPlugin::get_priority() const {
+	return -1;
+}
+
+bool MeshInstance3DGizmoPlugin::can_be_hidden() const {
+	return false;
+}
+
+void MeshInstance3DGizmoPlugin::redraw(EditorNode3DGizmo *p_gizmo) {
+	MeshInstance3D *mesh = Object::cast_to<MeshInstance3D>(p_gizmo->get_node_3d());
+
+	p_gizmo->clear();
+
+	Ref<Mesh> m = mesh->get_mesh();
+
+	if (m.is_null()) {
+		return; //none
+	}
+
+	Ref<TriangleMesh> tm;
+
+	Ref<PlaneMesh> plane_mesh = mesh->get_mesh();
+	if (plane_mesh.is_valid() && (plane_mesh->get_subdivide_depth() > 0 || plane_mesh->get_subdivide_width() > 0)) {
+		// PlaneMesh subdiv makes gizmo redraw very slow due to TriangleMesh BVH calculation for every face.
+		// For gizmo collision this is very much unnecessary since a PlaneMesh is always flat, 2 faces is enough.
+		Ref<PlaneMesh> simple_plane_mesh;
+		simple_plane_mesh.instantiate();
+		simple_plane_mesh->set_orientation(plane_mesh->get_orientation());
+		simple_plane_mesh->set_size(plane_mesh->get_size());
+		simple_plane_mesh->set_center_offset(plane_mesh->get_center_offset());
+		tm = simple_plane_mesh->generate_triangle_mesh();
+	} else {
+		tm = m->generate_triangle_mesh();
+	}
+
+	if (tm.is_valid()) {
+		p_gizmo->add_collision_triangles(tm);
+	}
+}

engine/editor/plugins/gizmos/mesh_instance_3d_gizmo_plugin.h

@@ -0,0 +1,49 @@
+/**************************************************************************/
+/*  mesh_instance_3d_gizmo_plugin.h                                       */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef MESH_INSTANCE_3D_GIZMO_PLUGIN_H
+#define MESH_INSTANCE_3D_GIZMO_PLUGIN_H
+
+#include "editor/plugins/node_3d_editor_gizmos.h"
+
+class MeshInstance3DGizmoPlugin : public EditorNode3DGizmoPlugin {
+	GDCLASS(MeshInstance3DGizmoPlugin, EditorNode3DGizmoPlugin);
+
+public:
+	bool has_gizmo(Node3D *p_spatial) override;
+	String get_gizmo_name() const override;
+	int get_priority() const override;
+	bool can_be_hidden() const override;
+	void redraw(EditorNode3DGizmo *p_gizmo) override;
+
+	MeshInstance3DGizmoPlugin();
+};
+
+#endif // MESH_INSTANCE_3D_GIZMO_PLUGIN_H

engine/editor/plugins/gizmos/navigation_link_3d_gizmo_plugin.cpp

@@ -0,0 +1,272 @@
+/**************************************************************************/
+/*  navigation_link_3d_gizmo_plugin.cpp                                   */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#include "navigation_link_3d_gizmo_plugin.h"
+
+#include "editor/editor_undo_redo_manager.h"
+#include "editor/plugins/node_3d_editor_plugin.h"
+#include "scene/3d/navigation_link_3d.h"
+#include "servers/navigation_server_3d.h"
+
+NavigationLink3DGizmoPlugin::NavigationLink3DGizmoPlugin() {
+	create_material("navigation_link_material", NavigationServer3D::get_singleton()->get_debug_navigation_link_connection_color());
+	create_material("navigation_link_material_disabled", NavigationServer3D::get_singleton()->get_debug_navigation_link_connection_disabled_color());
+	create_handle_material("handles");
+}
+
+bool NavigationLink3DGizmoPlugin::has_gizmo(Node3D *p_spatial) {
+	return Object::cast_to<NavigationLink3D>(p_spatial) != nullptr;
+}
+
+String NavigationLink3DGizmoPlugin::get_gizmo_name() const {
+	return "NavigationLink3D";
+}
+
+int NavigationLink3DGizmoPlugin::get_priority() const {
+	return -1;
+}
+
+void NavigationLink3DGizmoPlugin::redraw(EditorNode3DGizmo *p_gizmo) {
+	NavigationLink3D *link = Object::cast_to<NavigationLink3D>(p_gizmo->get_node_3d());
+
+	RID nav_map = link->get_world_3d()->get_navigation_map();
+	real_t search_radius = NavigationServer3D::get_singleton()->map_get_link_connection_radius(nav_map);
+	Vector3 up_vector = NavigationServer3D::get_singleton()->map_get_up(nav_map);
+	Vector3::Axis up_axis = up_vector.max_axis_index();
+
+	Vector3 start_position = link->get_start_position();
+	Vector3 end_position = link->get_end_position();
+
+	Ref<Material> link_material = get_material("navigation_link_material", p_gizmo);
+	Ref<Material> link_material_disabled = get_material("navigation_link_material_disabled", p_gizmo);
+	Ref<Material> handles_material = get_material("handles");
+
+	p_gizmo->clear();
+
+	// Number of points in an octant. So there ill be 8 * points_in_octant points in total.
+	// Correspond to the smoothness of the circle.
+	const uint32_t points_in_octant = 4;
+	real_t inc = (Math_PI / (4 * points_in_octant));
+
+	Vector<Vector3> lines;
+	// points_in_octant * 8 * 2 per circle * 2 circles. 2 for the start-end. 4 for the arrow, and another 4 if bidirectionnal.
+	lines.resize(points_in_octant * 8 * 2 * 2 + 2 + 4 + (link->is_bidirectional() ? 4 : 0));
+	uint32_t index = 0;
+	Vector3 *lines_ptrw = lines.ptrw();
+	// Draw line between the points.
+	lines_ptrw[index++] = start_position;
+	lines_ptrw[index++] = end_position;
+	real_t search_radius_squared = search_radius * search_radius;
+
+	// Draw circles at start and end positions in one go.
+	real_t r = 0;
+	Vector2 a = Vector2(search_radius, 0);
+	for (uint32_t i = 0; i < points_in_octant; i++) {
+		r += inc;
+		real_t x = Math::cos(r) * search_radius;
+		real_t y = Math::sqrt(search_radius_squared - (x * x));
+
+		// Draw axis-aligned circle.
+		switch (up_axis) {
+			case Vector3::AXIS_X:
+#define PUSH_OCTANT(_position, a, b)                          \
+	lines_ptrw[index++] = _position + Vector3(0, a.x, a.y);   \
+	lines_ptrw[index++] = _position + Vector3(0, x, y);       \
+	lines_ptrw[index++] = _position + Vector3(0, -a.x, a.y);  \
+	lines_ptrw[index++] = _position + Vector3(0, x, y);       \
+	lines_ptrw[index++] = _position + Vector3(0, a.x, -a.y);  \
+	lines_ptrw[index++] = _position + Vector3(0, x, -y);      \
+	lines_ptrw[index++] = _position + Vector3(0, -a.x, -a.y); \
+	lines_ptrw[index++] = _position + Vector3(0, x, y);       \
+	lines_ptrw[index++] = _position + Vector3(0, a.y, a.x);   \
+	lines_ptrw[index++] = _position + Vector3(0, y, x);       \
+	lines_ptrw[index++] = _position + Vector3(0, -a.y, a.x);  \
+	lines_ptrw[index++] = _position + Vector3(0, -y, x);      \
+	lines_ptrw[index++] = _position + Vector3(0, a.y, -a.x);  \
+	lines_ptrw[index++] = _position + Vector3(0, y, -x);      \
+	lines_ptrw[index++] = _position + Vector3(0, -a.y, -a.x); \
+	lines_ptrw[index++] = _position + Vector3(0, -y, -x);
+
+				PUSH_OCTANT(start_position, a, b)
+				PUSH_OCTANT(end_position, a, b)
+#undef PUSH_OCTANT
+				break;
+			case Vector3::AXIS_Y:
+#define PUSH_OCTANT(_position, a, b)                          \
+	lines_ptrw[index++] = _position + Vector3(a.x, 0, a.y);   \
+	lines_ptrw[index++] = _position + Vector3(x, 0, y);       \
+	lines_ptrw[index++] = _position + Vector3(-a.x, 0, a.y);  \
+	lines_ptrw[index++] = _position + Vector3(-x, 0, y);      \
+	lines_ptrw[index++] = _position + Vector3(a.x, 0, -a.y);  \
+	lines_ptrw[index++] = _position + Vector3(x, 0, -y);      \
+	lines_ptrw[index++] = _position + Vector3(-a.x, 0, -a.y); \
+	lines_ptrw[index++] = _position + Vector3(-x, 0, -y);     \
+	lines_ptrw[index++] = _position + Vector3(a.y, 0, a.x);   \
+	lines_ptrw[index++] = _position + Vector3(y, 0, x);       \
+	lines_ptrw[index++] = _position + Vector3(-a.y, 0, a.x);  \
+	lines_ptrw[index++] = _position + Vector3(-y, 0, x);      \
+	lines_ptrw[index++] = _position + Vector3(a.y, 0, -a.x);  \
+	lines_ptrw[index++] = _position + Vector3(y, 0, -x);      \
+	lines_ptrw[index++] = _position + Vector3(-a.y, 0, -a.x); \
+	lines_ptrw[index++] = _position + Vector3(-y, 0, -x);
+
+				PUSH_OCTANT(start_position, a, b)
+				PUSH_OCTANT(end_position, a, b)
+#undef PUSH_OCTANT
+				break;
+			case Vector3::AXIS_Z:
+#define PUSH_OCTANT(_position, a, b)                          \
+	lines_ptrw[index++] = _position + Vector3(a.x, a.y, 0);   \
+	lines_ptrw[index++] = _position + Vector3(x, y, 0);       \
+	lines_ptrw[index++] = _position + Vector3(-a.x, a.y, 0);  \
+	lines_ptrw[index++] = _position + Vector3(-x, y, 0);      \
+	lines_ptrw[index++] = _position + Vector3(a.x, -a.y, 0);  \
+	lines_ptrw[index++] = _position + Vector3(x, -y, 0);      \
+	lines_ptrw[index++] = _position + Vector3(-a.x, -a.y, 0); \
+	lines_ptrw[index++] = _position + Vector3(-x, -y, 0);     \
+	lines_ptrw[index++] = _position + Vector3(a.y, a.x, 0);   \
+	lines_ptrw[index++] = _position + Vector3(y, x, 0);       \
+	lines_ptrw[index++] = _position + Vector3(-a.y, a.x, 0);  \
+	lines_ptrw[index++] = _position + Vector3(-y, x, 0);      \
+	lines_ptrw[index++] = _position + Vector3(a.y, -a.x, 0);  \
+	lines_ptrw[index++] = _position + Vector3(y, -x, 0);      \
+	lines_ptrw[index++] = _position + Vector3(-a.y, -a.x, 0); \
+	lines_ptrw[index++] = _position + Vector3(-y, -x, 0);
+
+				PUSH_OCTANT(start_position, a, b)
+				PUSH_OCTANT(end_position, a, b)
+#undef PUSH_OCTANT
+				break;
+		}
+		a.x = x;
+		a.y = y;
+	}
+
+	const Vector3 link_segment = end_position - start_position;
+	const Vector3 up = Vector3(0.0, 1.0, 0.0);
+	const float arror_len = 0.5;
+
+	{
+		Vector3 anchor = start_position + (link_segment * 0.75);
+		Vector3 direction = start_position.direction_to(end_position);
+		Vector3 arrow_dir = direction.cross(up);
+		lines_ptrw[index++] = anchor;
+		lines_ptrw[index++] = anchor + (arrow_dir - direction) * arror_len;
+
+		arrow_dir = -direction.cross(up);
+		lines_ptrw[index++] = anchor;
+		lines_ptrw[index++] = anchor + (arrow_dir - direction) * arror_len;
+	}
+
+	if (link->is_bidirectional()) {
+		Vector3 anchor = start_position + (link_segment * 0.25);
+		Vector3 direction = end_position.direction_to(start_position);
+		Vector3 arrow_dir = direction.cross(up);
+		lines_ptrw[index++] = anchor;
+		lines_ptrw[index++] = anchor + (arrow_dir - direction) * arror_len;
+
+		arrow_dir = -direction.cross(up);
+		lines_ptrw[index++] = anchor;
+		lines_ptrw[index++] = anchor + (arrow_dir - direction) * arror_len;
+	}
+
+	p_gizmo->add_lines(lines, link->is_enabled() ? link_material : link_material_disabled);
+	p_gizmo->add_collision_segments(lines);
+
+	p_gizmo->add_handles(Vector({ start_position, end_position }), handles_material);
+}
+
+String NavigationLink3DGizmoPlugin::get_handle_name(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const {
+	return p_id == 0 ? TTR("Start Location") : TTR("End Location");
+}
+
+Variant NavigationLink3DGizmoPlugin::get_handle_value(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const {
+	NavigationLink3D *link = Object::cast_to<NavigationLink3D>(p_gizmo->get_node_3d());
+	return p_id == 0 ? link->get_start_position() : link->get_end_position();
+}
+
+void NavigationLink3DGizmoPlugin::set_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, Camera3D *p_camera, const Point2 &p_point) {
+	NavigationLink3D *link = Object::cast_to<NavigationLink3D>(p_gizmo->get_node_3d());
+
+	Transform3D gt = link->get_global_transform();
+	Transform3D gi = gt.affine_inverse();
+
+	Transform3D ct = p_camera->get_global_transform();
+	Vector3 cam_dir = ct.basis.get_column(Vector3::AXIS_Z);
+
+	Vector3 ray_from = p_camera->project_ray_origin(p_point);
+	Vector3 ray_dir = p_camera->project_ray_normal(p_point);
+
+	Vector3 position = p_id == 0 ? link->get_start_position() : link->get_end_position();
+	Plane move_plane = Plane(cam_dir, gt.xform(position));
+
+	Vector3 intersection;
+	if (!move_plane.intersects_ray(ray_from, ray_dir, &intersection)) {
+		return;
+	}
+
+	if (Node3DEditor::get_singleton()->is_snap_enabled()) {
+		double snap = Node3DEditor::get_singleton()->get_translate_snap();
+		intersection.snapf(snap);
+	}
+
+	position = gi.xform(intersection);
+	if (p_id == 0) {
+		link->set_start_position(position);
+	} else if (p_id == 1) {
+		link->set_end_position(position);
+	}
+}
+
+void NavigationLink3DGizmoPlugin::commit_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, const Variant &p_restore, bool p_cancel) {
+	NavigationLink3D *link = Object::cast_to<NavigationLink3D>(p_gizmo->get_node_3d());
+
+	if (p_cancel) {
+		if (p_id == 0) {
+			link->set_start_position(p_restore);
+		} else {
+			link->set_end_position(p_restore);
+		}
+		return;
+	}
+
+	EditorUndoRedoManager *ur = EditorUndoRedoManager::get_singleton();
+	if (p_id == 0) {
+		ur->create_action(TTR("Change Start Position"));
+		ur->add_do_method(link, "set_start_position", link->get_start_position());
+		ur->add_undo_method(link, "set_start_position", p_restore);
+	} else {
+		ur->create_action(TTR("Change End Position"));
+		ur->add_do_method(link, "set_end_position", link->get_end_position());
+		ur->add_undo_method(link, "set_end_position", p_restore);
+	}
+
+	ur->commit_action();
+}

engine/editor/plugins/gizmos/navigation_link_3d_gizmo_plugin.h

@@ -0,0 +1,53 @@
+/**************************************************************************/
+/*  navigation_link_3d_gizmo_plugin.h                                     */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef NAVIGATION_LINK_3D_GIZMO_PLUGIN_H
+#define NAVIGATION_LINK_3D_GIZMO_PLUGIN_H
+
+#include "editor/plugins/node_3d_editor_gizmos.h"
+
+class NavigationLink3DGizmoPlugin : public EditorNode3DGizmoPlugin {
+	GDCLASS(NavigationLink3DGizmoPlugin, EditorNode3DGizmoPlugin);
+
+public:
+	bool has_gizmo(Node3D *p_spatial) override;
+	String get_gizmo_name() const override;
+	int get_priority() const override;
+	void redraw(EditorNode3DGizmo *p_gizmo) override;
+
+	String get_handle_name(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const override;
+	Variant get_handle_value(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const override;
+	void set_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, Camera3D *p_camera, const Point2 &p_point) override;
+	void commit_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, const Variant &p_restore, bool p_cancel = false) override;
+
+	NavigationLink3DGizmoPlugin();
+};
+
+#endif // NAVIGATION_LINK_3D_GIZMO_PLUGIN_H

engine/editor/plugins/gizmos/navigation_region_3d_gizmo_plugin.cpp

@@ -0,0 +1,207 @@
+/**************************************************************************/
+/*  navigation_region_3d_gizmo_plugin.cpp                                 */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#include "navigation_region_3d_gizmo_plugin.h"
+
+#include "scene/3d/navigation_region_3d.h"
+#include "servers/navigation_server_3d.h"
+
+NavigationRegion3DGizmoPlugin::NavigationRegion3DGizmoPlugin() {
+	create_material("face_material", NavigationServer3D::get_singleton()->get_debug_navigation_geometry_face_color(), false, false, true);
+	create_material("face_material_disabled", NavigationServer3D::get_singleton()->get_debug_navigation_geometry_face_disabled_color(), false, false, true);
+	create_material("edge_material", NavigationServer3D::get_singleton()->get_debug_navigation_geometry_edge_color());
+	create_material("edge_material_disabled", NavigationServer3D::get_singleton()->get_debug_navigation_geometry_edge_disabled_color());
+
+	Color baking_aabb_material_color = Color(0.8, 0.5, 0.7);
+	baking_aabb_material_color.a = 0.1;
+	create_material("baking_aabb_material", baking_aabb_material_color);
+}
+
+bool NavigationRegion3DGizmoPlugin::has_gizmo(Node3D *p_spatial) {
+	return Object::cast_to<NavigationRegion3D>(p_spatial) != nullptr;
+}
+
+String NavigationRegion3DGizmoPlugin::get_gizmo_name() const {
+	return "NavigationRegion3D";
+}
+
+int NavigationRegion3DGizmoPlugin::get_priority() const {
+	return -1;
+}
+
+void NavigationRegion3DGizmoPlugin::redraw(EditorNode3DGizmo *p_gizmo) {
+	NavigationRegion3D *navigationregion = Object::cast_to<NavigationRegion3D>(p_gizmo->get_node_3d());
+
+	p_gizmo->clear();
+	Ref<NavigationMesh> navigationmesh = navigationregion->get_navigation_mesh();
+	if (navigationmesh.is_null()) {
+		return;
+	}
+
+	AABB baking_aabb = navigationmesh->get_filter_baking_aabb();
+	if (baking_aabb.has_volume()) {
+		Vector3 baking_aabb_offset = navigationmesh->get_filter_baking_aabb_offset();
+
+		if (p_gizmo->is_selected()) {
+			Ref<Material> material = get_material("baking_aabb_material", p_gizmo);
+			p_gizmo->add_solid_box(material, baking_aabb.get_size(), baking_aabb.get_center() + baking_aabb_offset);
+		}
+	}
+
+	Vector<Vector3> vertices = navigationmesh->get_vertices();
+	const Vector3 *vr = vertices.ptr();
+	List<Face3> faces;
+	for (int i = 0; i < navigationmesh->get_polygon_count(); i++) {
+		Vector<int> p = navigationmesh->get_polygon(i);
+
+		for (int j = 2; j < p.size(); j++) {
+			Face3 f;
+			f.vertex[0] = vr[p[0]];
+			f.vertex[1] = vr[p[j - 1]];
+			f.vertex[2] = vr[p[j]];
+
+			faces.push_back(f);
+		}
+	}
+
+	if (faces.is_empty()) {
+		return;
+	}
+
+	HashMap<_EdgeKey, bool, _EdgeKey> edge_map;
+	Vector<Vector3> tmeshfaces;
+	tmeshfaces.resize(faces.size() * 3);
+
+	{
+		Vector3 *tw = tmeshfaces.ptrw();
+		int tidx = 0;
+
+		for (const Face3 &f : faces) {
+			for (int j = 0; j < 3; j++) {
+				tw[tidx++] = f.vertex[j];
+				_EdgeKey ek;
+				ek.from = f.vertex[j].snappedf(CMP_EPSILON);
+				ek.to = f.vertex[(j + 1) % 3].snappedf(CMP_EPSILON);
+				if (ek.from < ek.to) {
+					SWAP(ek.from, ek.to);
+				}
+
+				HashMap<_EdgeKey, bool, _EdgeKey>::Iterator F = edge_map.find(ek);
+
+				if (F) {
+					F->value = false;
+
+				} else {
+					edge_map[ek] = true;
+				}
+			}
+		}
+	}
+	Vector<Vector3> lines;
+
+	for (const KeyValue<_EdgeKey, bool> &E : edge_map) {
+		if (E.value) {
+			lines.push_back(E.key.from);
+			lines.push_back(E.key.to);
+		}
+	}
+
+	Ref<TriangleMesh> tmesh = memnew(TriangleMesh);
+	tmesh->create(tmeshfaces);
+
+	p_gizmo->add_collision_triangles(tmesh);
+	p_gizmo->add_collision_segments(lines);
+
+	Ref<ArrayMesh> debug_mesh = Ref<ArrayMesh>(memnew(ArrayMesh));
+	int polygon_count = navigationmesh->get_polygon_count();
+
+	// build geometry face surface
+	Vector<Vector3> face_vertex_array;
+	face_vertex_array.resize(polygon_count * 3);
+
+	for (int i = 0; i < polygon_count; i++) {
+		Vector<int> polygon = navigationmesh->get_polygon(i);
+
+		face_vertex_array.push_back(vertices[polygon[0]]);
+		face_vertex_array.push_back(vertices[polygon[1]]);
+		face_vertex_array.push_back(vertices[polygon[2]]);
+	}
+
+	Array face_mesh_array;
+	face_mesh_array.resize(Mesh::ARRAY_MAX);
+	face_mesh_array[Mesh::ARRAY_VERTEX] = face_vertex_array;
+
+	// if enabled add vertex colors to colorize each face individually
+	RandomPCG rand;
+	bool enabled_geometry_face_random_color = NavigationServer3D::get_singleton()->get_debug_navigation_enable_geometry_face_random_color();
+	if (enabled_geometry_face_random_color) {
+		Color debug_navigation_geometry_face_color = NavigationServer3D::get_singleton()->get_debug_navigation_geometry_face_color();
+		Color polygon_color = debug_navigation_geometry_face_color;
+
+		Vector<Color> face_color_array;
+		face_color_array.resize(polygon_count * 3);
+
+		for (int i = 0; i < polygon_count; i++) {
+			// Generate the polygon color, slightly randomly modified from the settings one.
+			polygon_color.set_hsv(debug_navigation_geometry_face_color.get_h() + rand.random(-1.0, 1.0) * 0.1, debug_navigation_geometry_face_color.get_s(), debug_navigation_geometry_face_color.get_v() + rand.random(-1.0, 1.0) * 0.2);
+			polygon_color.a = debug_navigation_geometry_face_color.a;
+
+			Vector<int> polygon = navigationmesh->get_polygon(i);
+
+			face_color_array.push_back(polygon_color);
+			face_color_array.push_back(polygon_color);
+			face_color_array.push_back(polygon_color);
+		}
+		face_mesh_array[Mesh::ARRAY_COLOR] = face_color_array;
+	}
+
+	debug_mesh->add_surface_from_arrays(Mesh::PRIMITIVE_TRIANGLES, face_mesh_array);
+	p_gizmo->add_mesh(debug_mesh, navigationregion->is_enabled() ? get_material("face_material", p_gizmo) : get_material("face_material_disabled", p_gizmo));
+
+	// if enabled build geometry edge line surface
+	bool enabled_edge_lines = NavigationServer3D::get_singleton()->get_debug_navigation_enable_edge_lines();
+	if (enabled_edge_lines) {
+		Vector<Vector3> line_vertex_array;
+		line_vertex_array.resize(polygon_count * 6);
+
+		for (int i = 0; i < polygon_count; i++) {
+			Vector<int> polygon = navigationmesh->get_polygon(i);
+
+			line_vertex_array.push_back(vertices[polygon[0]]);
+			line_vertex_array.push_back(vertices[polygon[1]]);
+			line_vertex_array.push_back(vertices[polygon[1]]);
+			line_vertex_array.push_back(vertices[polygon[2]]);
+			line_vertex_array.push_back(vertices[polygon[2]]);
+			line_vertex_array.push_back(vertices[polygon[0]]);
+		}
+
+		p_gizmo->add_lines(line_vertex_array, navigationregion->is_enabled() ? get_material("edge_material", p_gizmo) : get_material("edge_material_disabled", p_gizmo));
+	}
+}

engine/editor/plugins/gizmos/navigation_region_3d_gizmo_plugin.h

@@ -0,0 +1,61 @@
+/**************************************************************************/
+/*  navigation_region_3d_gizmo_plugin.h                                   */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef NAVIGATION_REGION_3D_GIZMO_PLUGIN_H
+#define NAVIGATION_REGION_3D_GIZMO_PLUGIN_H
+
+#include "editor/plugins/node_3d_editor_gizmos.h"
+
+class NavigationRegion3DGizmoPlugin : public EditorNode3DGizmoPlugin {
+	GDCLASS(NavigationRegion3DGizmoPlugin, EditorNode3DGizmoPlugin);
+
+	struct _EdgeKey {
+		Vector3 from;
+		Vector3 to;
+
+		static uint32_t hash(const _EdgeKey &p_key) {
+			return HashMapHasherDefault::hash(p_key.from) ^ HashMapHasherDefault::hash(p_key.to);
+		}
+
+		bool operator==(const _EdgeKey &p_with) const {
+			return HashMapComparatorDefault<Vector3>::compare(from, p_with.from) && HashMapComparatorDefault<Vector3>::compare(to, p_with.to);
+		}
+	};
+
+public:
+	bool has_gizmo(Node3D *p_spatial) override;
+	String get_gizmo_name() const override;
+	int get_priority() const override;
+	void redraw(EditorNode3DGizmo *p_gizmo) override;
+
+	NavigationRegion3DGizmoPlugin();
+};
+
+#endif // NAVIGATION_REGION_3D_GIZMO_PLUGIN_H

engine/editor/plugins/gizmos/occluder_instance_3d_gizmo_plugin.cpp

@@ -0,0 +1,284 @@
+/**************************************************************************/
+/*  occluder_instance_3d_gizmo_plugin.cpp                                 */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#include "occluder_instance_3d_gizmo_plugin.h"
+
+#include "editor/editor_settings.h"
+#include "editor/editor_undo_redo_manager.h"
+#include "editor/plugins/node_3d_editor_plugin.h"
+#include "scene/3d/occluder_instance_3d.h"
+
+OccluderInstance3DGizmoPlugin::OccluderInstance3DGizmoPlugin() {
+	create_material("line_material", EDITOR_GET("editors/3d_gizmos/gizmo_colors/occluder"));
+	create_handle_material("handles");
+}
+
+bool OccluderInstance3DGizmoPlugin::has_gizmo(Node3D *p_spatial) {
+	return Object::cast_to<OccluderInstance3D>(p_spatial) != nullptr;
+}
+
+String OccluderInstance3DGizmoPlugin::get_gizmo_name() const {
+	return "OccluderInstance3D";
+}
+
+int OccluderInstance3DGizmoPlugin::get_priority() const {
+	return -1;
+}
+
+String OccluderInstance3DGizmoPlugin::get_handle_name(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const {
+	const OccluderInstance3D *cs = Object::cast_to<OccluderInstance3D>(p_gizmo->get_node_3d());
+
+	Ref<Occluder3D> o = cs->get_occluder();
+	if (o.is_null()) {
+		return "";
+	}
+
+	if (Object::cast_to<SphereOccluder3D>(*o)) {
+		return "Radius";
+	}
+
+	if (Object::cast_to<BoxOccluder3D>(*o) || Object::cast_to<QuadOccluder3D>(*o)) {
+		return "Size";
+	}
+
+	return "";
+}
+
+Variant OccluderInstance3DGizmoPlugin::get_handle_value(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const {
+	OccluderInstance3D *oi = Object::cast_to<OccluderInstance3D>(p_gizmo->get_node_3d());
+
+	Ref<Occluder3D> o = oi->get_occluder();
+	if (o.is_null()) {
+		return Variant();
+	}
+
+	if (Object::cast_to<SphereOccluder3D>(*o)) {
+		Ref<SphereOccluder3D> so = o;
+		return so->get_radius();
+	}
+
+	if (Object::cast_to<BoxOccluder3D>(*o)) {
+		Ref<BoxOccluder3D> bo = o;
+		return bo->get_size();
+	}
+
+	if (Object::cast_to<QuadOccluder3D>(*o)) {
+		Ref<QuadOccluder3D> qo = o;
+		return qo->get_size();
+	}
+
+	return Variant();
+}
+
+void OccluderInstance3DGizmoPlugin::set_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, Camera3D *p_camera, const Point2 &p_point) {
+	OccluderInstance3D *oi = Object::cast_to<OccluderInstance3D>(p_gizmo->get_node_3d());
+
+	Ref<Occluder3D> o = oi->get_occluder();
+	if (o.is_null()) {
+		return;
+	}
+
+	Transform3D gt = oi->get_global_transform();
+	Transform3D gi = gt.affine_inverse();
+
+	Vector3 ray_from = p_camera->project_ray_origin(p_point);
+	Vector3 ray_dir = p_camera->project_ray_normal(p_point);
+
+	Vector3 sg[2] = { gi.xform(ray_from), gi.xform(ray_from + ray_dir * 4096) };
+
+	bool snap_enabled = Node3DEditor::get_singleton()->is_snap_enabled();
+	float snap = Node3DEditor::get_singleton()->get_translate_snap();
+
+	if (Object::cast_to<SphereOccluder3D>(*o)) {
+		Ref<SphereOccluder3D> so = o;
+		Vector3 ra, rb;
+		Geometry3D::get_closest_points_between_segments(Vector3(), Vector3(4096, 0, 0), sg[0], sg[1], ra, rb);
+		float d = ra.x;
+		if (snap_enabled) {
+			d = Math::snapped(d, snap);
+		}
+
+		if (d < 0.001) {
+			d = 0.001;
+		}
+
+		so->set_radius(d);
+	}
+
+	if (Object::cast_to<BoxOccluder3D>(*o)) {
+		Vector3 axis;
+		axis[p_id] = 1.0;
+		Ref<BoxOccluder3D> bo = o;
+		Vector3 ra, rb;
+		Geometry3D::get_closest_points_between_segments(Vector3(), axis * 4096, sg[0], sg[1], ra, rb);
+		float d = ra[p_id] * 2;
+		if (snap_enabled) {
+			d = Math::snapped(d, snap);
+		}
+
+		if (d < 0.001) {
+			d = 0.001;
+		}
+
+		Vector3 he = bo->get_size();
+		he[p_id] = d;
+		bo->set_size(he);
+	}
+
+	if (Object::cast_to<QuadOccluder3D>(*o)) {
+		Ref<QuadOccluder3D> qo = o;
+		Plane p = Plane(Vector3(0.0f, 0.0f, 1.0f), 0.0f);
+		Vector3 intersection;
+		if (!p.intersects_segment(sg[0], sg[1], &intersection)) {
+			return;
+		}
+
+		if (p_id == 2) {
+			Vector2 s = Vector2(intersection.x, intersection.y) * 2.0f;
+			if (snap_enabled) {
+				s = s.snappedf(snap);
+			}
+			s = s.maxf(0.001);
+			qo->set_size(s);
+		} else {
+			float d = intersection[p_id];
+			if (snap_enabled) {
+				d = Math::snapped(d, snap);
+			}
+
+			if (d < 0.001) {
+				d = 0.001;
+			}
+
+			Vector2 he = qo->get_size();
+			he[p_id] = d * 2.0f;
+			qo->set_size(he);
+		}
+	}
+}
+
+void OccluderInstance3DGizmoPlugin::commit_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, const Variant &p_restore, bool p_cancel) {
+	OccluderInstance3D *oi = Object::cast_to<OccluderInstance3D>(p_gizmo->get_node_3d());
+
+	Ref<Occluder3D> o = oi->get_occluder();
+	if (o.is_null()) {
+		return;
+	}
+
+	if (Object::cast_to<SphereOccluder3D>(*o)) {
+		Ref<SphereOccluder3D> so = o;
+		if (p_cancel) {
+			so->set_radius(p_restore);
+			return;
+		}
+
+		EditorUndoRedoManager *ur = EditorUndoRedoManager::get_singleton();
+		ur->create_action(TTR("Change Sphere Shape Radius"));
+		ur->add_do_method(so.ptr(), "set_radius", so->get_radius());
+		ur->add_undo_method(so.ptr(), "set_radius", p_restore);
+		ur->commit_action();
+	}
+
+	if (Object::cast_to<BoxOccluder3D>(*o)) {
+		Ref<BoxOccluder3D> bo = o;
+		if (p_cancel) {
+			bo->set_size(p_restore);
+			return;
+		}
+
+		EditorUndoRedoManager *ur = EditorUndoRedoManager::get_singleton();
+		ur->create_action(TTR("Change Box Shape Size"));
+		ur->add_do_method(bo.ptr(), "set_size", bo->get_size());
+		ur->add_undo_method(bo.ptr(), "set_size", p_restore);
+		ur->commit_action();
+	}
+
+	if (Object::cast_to<QuadOccluder3D>(*o)) {
+		Ref<QuadOccluder3D> qo = o;
+		if (p_cancel) {
+			qo->set_size(p_restore);
+			return;
+		}
+
+		EditorUndoRedoManager *ur = EditorUndoRedoManager::get_singleton();
+		ur->create_action(TTR("Change Box Shape Size"));
+		ur->add_do_method(qo.ptr(), "set_size", qo->get_size());
+		ur->add_undo_method(qo.ptr(), "set_size", p_restore);
+		ur->commit_action();
+	}
+}
+
+void OccluderInstance3DGizmoPlugin::redraw(EditorNode3DGizmo *p_gizmo) {
+	OccluderInstance3D *occluder_instance = Object::cast_to<OccluderInstance3D>(p_gizmo->get_node_3d());
+
+	p_gizmo->clear();
+
+	Ref<Occluder3D> o = occluder_instance->get_occluder();
+
+	if (o.is_null()) {
+		return;
+	}
+
+	Vector<Vector3> lines = o->get_debug_lines();
+	if (!lines.is_empty()) {
+		Ref<Material> material = get_material("line_material", p_gizmo);
+		p_gizmo->add_lines(lines, material);
+		p_gizmo->add_collision_segments(lines);
+	}
+
+	Ref<Material> handles_material = get_material("handles");
+	if (Object::cast_to<SphereOccluder3D>(*o)) {
+		Ref<SphereOccluder3D> so = o;
+		float r = so->get_radius();
+		Vector<Vector3> handles = { Vector3(r, 0, 0) };
+		p_gizmo->add_handles(handles, handles_material);
+	}
+
+	if (Object::cast_to<BoxOccluder3D>(*o)) {
+		Ref<BoxOccluder3D> bo = o;
+
+		Vector<Vector3> handles;
+		for (int i = 0; i < 3; i++) {
+			Vector3 ax;
+			ax[i] = bo->get_size()[i] / 2;
+			handles.push_back(ax);
+		}
+
+		p_gizmo->add_handles(handles, handles_material);
+	}
+
+	if (Object::cast_to<QuadOccluder3D>(*o)) {
+		Ref<QuadOccluder3D> qo = o;
+		Vector2 size = qo->get_size();
+		Vector3 s = Vector3(size.x, size.y, 0.0f) / 2.0f;
+		Vector<Vector3> handles = { Vector3(s.x, 0.0f, 0.0f), Vector3(0.0f, s.y, 0.0f), Vector3(s.x, s.y, 0.0f) };
+		p_gizmo->add_handles(handles, handles_material);
+	}
+}

engine/editor/plugins/gizmos/occluder_instance_3d_gizmo_plugin.h

@@ -0,0 +1,53 @@
+/**************************************************************************/
+/*  occluder_instance_3d_gizmo_plugin.h                                   */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef OCCLUDER_INSTANCE_3D_GIZMO_PLUGIN_H
+#define OCCLUDER_INSTANCE_3D_GIZMO_PLUGIN_H
+
+#include "editor/plugins/node_3d_editor_gizmos.h"
+
+class OccluderInstance3DGizmoPlugin : public EditorNode3DGizmoPlugin {
+	GDCLASS(OccluderInstance3DGizmoPlugin, EditorNode3DGizmoPlugin);
+
+public:
+	bool has_gizmo(Node3D *p_spatial) override;
+	String get_gizmo_name() const override;
+	int get_priority() const override;
+	void redraw(EditorNode3DGizmo *p_gizmo) override;
+
+	String get_handle_name(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const override;
+	Variant get_handle_value(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const override;
+	void set_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, Camera3D *p_camera, const Point2 &p_point) override;
+	void commit_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, const Variant &p_restore, bool p_cancel = false) override;
+
+	OccluderInstance3DGizmoPlugin();
+};
+
+#endif // OCCLUDER_INSTANCE_3D_GIZMO_PLUGIN_H

engine/editor/plugins/gizmos/particles_3d_emission_shape_gizmo_plugin.cpp

@@ -0,0 +1,339 @@
+/**************************************************************************/
+/*  particles_3d_emission_shape_gizmo_plugin.cpp                          */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#include "particles_3d_emission_shape_gizmo_plugin.h"
+
+#include "editor/editor_node.h"
+#include "editor/editor_settings.h"
+#include "editor/editor_string_names.h"
+#include "editor/editor_undo_redo_manager.h"
+#include "editor/plugins/node_3d_editor_plugin.h"
+#include "scene/3d/cpu_particles_3d.h"
+#include "scene/3d/gpu_particles_3d.h"
+#include "scene/resources/3d/primitive_meshes.h"
+#include "scene/resources/particle_process_material.h"
+
+Particles3DEmissionShapeGizmoPlugin::Particles3DEmissionShapeGizmoPlugin() {
+	helper.instantiate();
+
+	Color gizmo_color = EDITOR_DEF_RST("editors/3d_gizmos/gizmo_colors/particles_emission_shape", Color(0.5, 0.7, 1));
+	create_material("particles_emission_shape_material", gizmo_color);
+
+	create_handle_material("handles");
+}
+
+bool Particles3DEmissionShapeGizmoPlugin::has_gizmo(Node3D *p_spatial) {
+	return Object::cast_to<GPUParticles3D>(p_spatial) || Object::cast_to<CPUParticles3D>(p_spatial) != nullptr;
+}
+
+String Particles3DEmissionShapeGizmoPlugin::get_gizmo_name() const {
+	return "Particles3DEmissionShape";
+}
+
+int Particles3DEmissionShapeGizmoPlugin::get_priority() const {
+	return -1;
+}
+
+bool Particles3DEmissionShapeGizmoPlugin::is_selectable_when_hidden() const {
+	return true;
+}
+
+String Particles3DEmissionShapeGizmoPlugin::get_handle_name(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const {
+	return "";
+}
+
+Variant Particles3DEmissionShapeGizmoPlugin::get_handle_value(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const {
+	return Variant();
+}
+
+void Particles3DEmissionShapeGizmoPlugin::set_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, Camera3D *p_camera, const Point2 &p_point) {
+}
+
+void Particles3DEmissionShapeGizmoPlugin::commit_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, const Variant &p_restore, bool p_cancel) {
+}
+
+void Particles3DEmissionShapeGizmoPlugin::redraw(EditorNode3DGizmo *p_gizmo) {
+	p_gizmo->clear();
+
+	if (Object::cast_to<GPUParticles3D>(p_gizmo->get_node_3d())) {
+		const GPUParticles3D *particles = Object::cast_to<GPUParticles3D>(p_gizmo->get_node_3d());
+
+		const Ref<ParticleProcessMaterial> mat = particles->get_process_material();
+		if (mat.is_valid()) {
+			const ParticleProcessMaterial::EmissionShape shape = mat->get_emission_shape();
+
+			const Ref<Material> material = get_material("particles_emission_shape_material", p_gizmo);
+			const Ref<Material> handles_material = get_material("handles");
+
+			if (shape == ParticleProcessMaterial::EMISSION_SHAPE_SPHERE || shape == ParticleProcessMaterial::EMISSION_SHAPE_SPHERE_SURFACE) {
+				const Vector3 offset = mat->get_emission_shape_offset();
+				const Vector3 scale = mat->get_emission_shape_scale();
+
+				const float r = mat->get_emission_sphere_radius();
+				Vector<Vector3> points;
+				for (int i = 0; i <= 120; i++) {
+					const float ra = Math::deg_to_rad((float)(i * 3));
+					const float rb = Math::deg_to_rad((float)((i + 1) * 3));
+					const Point2 a = Vector2(Math::sin(ra), Math::cos(ra)) * r;
+					const Point2 b = Vector2(Math::sin(rb), Math::cos(rb)) * r;
+
+					points.push_back(Vector3(a.x * scale.x + offset.x, offset.y, a.y * scale.z + offset.z));
+					points.push_back(Vector3(b.x * scale.x + offset.x, offset.y, b.y * scale.z + offset.z));
+					points.push_back(Vector3(offset.x, a.x * scale.y + offset.y, a.y * scale.z + offset.z));
+					points.push_back(Vector3(offset.x, b.x * scale.y + offset.y, b.y * scale.z + offset.z));
+					points.push_back(Vector3(a.x * scale.x + offset.x, a.y * scale.y + offset.y, offset.z));
+					points.push_back(Vector3(b.x * scale.x + offset.x, b.y * scale.y + offset.y, offset.z));
+				}
+
+				if (p_gizmo->is_selected()) {
+					p_gizmo->add_lines(points, material);
+				}
+			} else if (shape == ParticleProcessMaterial::EMISSION_SHAPE_BOX) {
+				const Vector3 offset = mat->get_emission_shape_offset();
+				const Vector3 scale = mat->get_emission_shape_scale();
+
+				const Vector3 box_extents = mat->get_emission_box_extents();
+				Ref<BoxMesh> box;
+				box.instantiate();
+				const AABB box_aabb = box->get_aabb();
+				Vector<Vector3> lines;
+
+				for (int i = 0; i < 12; i++) {
+					Vector3 a;
+					Vector3 b;
+					box_aabb.get_edge(i, a, b);
+					// Multiplication by 2 due to the extents being only half of the box size.
+					lines.push_back(a * 2.0 * scale * box_extents + offset);
+					lines.push_back(b * 2.0 * scale * box_extents + offset);
+				}
+
+				if (p_gizmo->is_selected()) {
+					p_gizmo->add_lines(lines, material);
+				}
+			} else if (shape == ParticleProcessMaterial::EMISSION_SHAPE_RING) {
+				const Vector3 offset = mat->get_emission_shape_offset();
+				const Vector3 scale = mat->get_emission_shape_scale();
+
+				const float ring_height = mat->get_emission_ring_height();
+				const float half_ring_height = ring_height / 2;
+				const float ring_radius = mat->get_emission_ring_radius();
+				const float ring_inner_radius = mat->get_emission_ring_inner_radius();
+				const Vector3 ring_axis = mat->get_emission_ring_axis();
+				const float ring_cone_angle = mat->get_emission_ring_cone_angle();
+				const float ring_radius_top = MAX(ring_radius - Math::tan(Math::deg_to_rad(90.0 - ring_cone_angle)) * ring_height, 0.0);
+				const float ring_inner_radius_top = (ring_inner_radius / ring_radius) * ring_radius_top;
+
+				Vector<Vector3> points;
+
+				Basis basis;
+				basis.rows[1] = ring_axis.normalized();
+				basis.rows[0] = Vector3(basis[1][1], -basis[1][2], -basis[1][0]).normalized();
+				basis.rows[0] = (basis[0] - basis[0].dot(basis[1]) * basis[1]).normalized();
+				basis[2] = basis[0].cross(basis[1]).normalized();
+				basis.invert();
+
+				for (int i = 0; i <= 120; i++) {
+					const float ra = Math::deg_to_rad((float)(i * 3));
+					const float ra_sin = Math::sin(ra);
+					const float ra_cos = Math::cos(ra);
+					const float rb = Math::deg_to_rad((float)((i + 1) * 3));
+					const float rb_sin = Math::sin(rb);
+					const float rb_cos = Math::cos(rb);
+					const Point2 a = Vector2(ra_sin, ra_cos) * ring_radius;
+					const Point2 b = Vector2(rb_sin, rb_cos) * ring_radius;
+					const Point2 a2 = Vector2(ra_sin, ra_cos) * ring_radius_top;
+					const Point2 b2 = Vector2(rb_sin, rb_cos) * ring_radius_top;
+					const Point2 inner_a = Vector2(ra_sin, ra_cos) * ring_inner_radius;
+					const Point2 inner_b = Vector2(rb_sin, rb_cos) * ring_inner_radius;
+					const Point2 inner_a2 = Vector2(ra_sin, ra_cos) * ring_inner_radius_top;
+					const Point2 inner_b2 = Vector2(rb_sin, rb_cos) * ring_inner_radius_top;
+
+					// Outer top ring cap.
+					points.push_back(basis.xform(Vector3(a2.x, half_ring_height, a2.y)) * scale + offset);
+					points.push_back(basis.xform(Vector3(b2.x, half_ring_height, b2.y)) * scale + offset);
+
+					// Outer bottom ring cap.
+					points.push_back(basis.xform(Vector3(a.x, -half_ring_height, a.y)) * scale + offset);
+					points.push_back(basis.xform(Vector3(b.x, -half_ring_height, b.y)) * scale + offset);
+
+					// Inner top ring cap.
+					points.push_back(basis.xform(Vector3(inner_a2.x, half_ring_height, inner_a2.y)) * scale + offset);
+					points.push_back(basis.xform(Vector3(inner_b2.x, half_ring_height, inner_b2.y)) * scale + offset);
+
+					// Inner bottom ring cap.
+					points.push_back(basis.xform(Vector3(inner_a.x, -half_ring_height, inner_a.y)) * scale + offset);
+					points.push_back(basis.xform(Vector3(inner_b.x, -half_ring_height, inner_b.y)) * scale + offset);
+				}
+
+				for (int i = 0; i <= 120; i = i + 30) {
+					const float ra = Math::deg_to_rad((float)(i * 3));
+					const float ra_sin = Math::sin(ra);
+					const float ra_cos = Math::cos(ra);
+					const Point2 a = Vector2(ra_sin, ra_cos) * ring_radius;
+					const Point2 a2 = Vector2(ra_sin, ra_cos) * ring_radius_top;
+					const Point2 inner_a = Vector2(ra_sin, ra_cos) * ring_inner_radius;
+					const Point2 inner_a2 = Vector2(ra_sin, ra_cos) * ring_inner_radius_top;
+
+					// Outer 90 degrees vertical lines.
+					points.push_back(basis.xform(Vector3(a2.x, half_ring_height, a2.y)) * scale + offset);
+					points.push_back(basis.xform(Vector3(a.x, -half_ring_height, a.y)) * scale + offset);
+
+					// Inner 90 degrees vertical lines.
+					points.push_back(basis.xform(Vector3(inner_a2.x, half_ring_height, inner_a2.y)) * scale + offset);
+					points.push_back(basis.xform(Vector3(inner_a.x, -half_ring_height, inner_a.y)) * scale + offset);
+				}
+
+				if (p_gizmo->is_selected()) {
+					p_gizmo->add_lines(points, material);
+				}
+			}
+		}
+	} else if (Object::cast_to<CPUParticles3D>(p_gizmo->get_node_3d())) {
+		const CPUParticles3D *particles = Object::cast_to<CPUParticles3D>(p_gizmo->get_node_3d());
+		const CPUParticles3D::EmissionShape shape = particles->get_emission_shape();
+
+		const Ref<Material> material = get_material("particles_emission_shape_material", p_gizmo);
+		const Ref<Material> handles_material = get_material("handles");
+
+		if (shape == CPUParticles3D::EMISSION_SHAPE_SPHERE || shape == CPUParticles3D::EMISSION_SHAPE_SPHERE_SURFACE) {
+			const float r = particles->get_emission_sphere_radius();
+			Vector<Vector3> points;
+			for (int i = 0; i <= 120; i++) {
+				const float ra = Math::deg_to_rad((float)(i * 3));
+				const float rb = Math::deg_to_rad((float)((i + 1) * 3));
+				const Point2 a = Vector2(Math::sin(ra), Math::cos(ra)) * r;
+				const Point2 b = Vector2(Math::sin(rb), Math::cos(rb)) * r;
+
+				points.push_back(Vector3(a.x, 0.0, a.y));
+				points.push_back(Vector3(b.x, 0.0, b.y));
+				points.push_back(Vector3(0.0, a.x, a.y));
+				points.push_back(Vector3(0.0, b.x, b.y));
+				points.push_back(Vector3(a.x, a.y, 0.0));
+				points.push_back(Vector3(b.x, b.y, 0.0));
+			}
+
+			if (p_gizmo->is_selected()) {
+				p_gizmo->add_lines(points, material);
+			}
+		} else if (shape == CPUParticles3D::EMISSION_SHAPE_BOX) {
+			const Vector3 box_extents = particles->get_emission_box_extents();
+			Ref<BoxMesh> box;
+			box.instantiate();
+			const AABB box_aabb = box->get_aabb();
+			Vector<Vector3> lines;
+
+			for (int i = 0; i < 12; i++) {
+				Vector3 a;
+				Vector3 b;
+				box_aabb.get_edge(i, a, b);
+				// Multiplication by 2 due to the extents being only half of the box size.
+				lines.push_back(a * 2.0 * box_extents);
+				lines.push_back(b * 2.0 * box_extents);
+			}
+
+			if (p_gizmo->is_selected()) {
+				p_gizmo->add_lines(lines, material);
+			}
+		} else if (shape == CPUParticles3D::EMISSION_SHAPE_RING) {
+			const float ring_height = particles->get_emission_ring_height();
+			const float half_ring_height = ring_height / 2;
+			const float ring_radius = particles->get_emission_ring_radius();
+			const float ring_inner_radius = particles->get_emission_ring_inner_radius();
+			const Vector3 ring_axis = particles->get_emission_ring_axis();
+			const float ring_cone_angle = particles->get_emission_ring_cone_angle();
+			const float ring_radius_top = MAX(ring_radius - Math::tan(Math::deg_to_rad(90.0 - ring_cone_angle)) * ring_height, 0.0);
+			const float ring_inner_radius_top = (ring_inner_radius / ring_radius) * ring_radius_top;
+
+			Vector<Vector3> points;
+
+			Basis basis;
+			basis.rows[1] = ring_axis.normalized();
+			basis.rows[0] = Vector3(basis[1][1], -basis[1][2], -basis[1][0]).normalized();
+			basis.rows[0] = (basis[0] - basis[0].dot(basis[1]) * basis[1]).normalized();
+			basis[2] = basis[0].cross(basis[1]).normalized();
+			basis.invert();
+
+			for (int i = 0; i <= 120; i++) {
+				const float ra = Math::deg_to_rad((float)(i * 3));
+				const float ra_sin = Math::sin(ra);
+				const float ra_cos = Math::cos(ra);
+				const float rb = Math::deg_to_rad((float)((i + 1) * 3));
+				const float rb_sin = Math::sin(rb);
+				const float rb_cos = Math::cos(rb);
+				const Point2 a = Vector2(ra_sin, ra_cos) * ring_radius;
+				const Point2 b = Vector2(rb_sin, rb_cos) * ring_radius;
+				const Point2 a2 = Vector2(ra_sin, ra_cos) * ring_radius_top;
+				const Point2 b2 = Vector2(rb_sin, rb_cos) * ring_radius_top;
+				const Point2 inner_a = Vector2(ra_sin, ra_cos) * ring_inner_radius;
+				const Point2 inner_b = Vector2(rb_sin, rb_cos) * ring_inner_radius;
+				const Point2 inner_a2 = Vector2(ra_sin, ra_cos) * ring_inner_radius_top;
+				const Point2 inner_b2 = Vector2(rb_sin, rb_cos) * ring_inner_radius_top;
+
+				// Outer top ring cap.
+				points.push_back(basis.xform(Vector3(a2.x, half_ring_height, a2.y)));
+				points.push_back(basis.xform(Vector3(b2.x, half_ring_height, b2.y)));
+
+				// Outer bottom ring cap.
+				points.push_back(basis.xform(Vector3(a.x, -half_ring_height, a.y)));
+				points.push_back(basis.xform(Vector3(b.x, -half_ring_height, b.y)));
+
+				// Inner top ring cap.
+				points.push_back(basis.xform(Vector3(inner_a2.x, half_ring_height, inner_a2.y)));
+				points.push_back(basis.xform(Vector3(inner_b2.x, half_ring_height, inner_b2.y)));
+
+				// Inner bottom ring cap.
+				points.push_back(basis.xform(Vector3(inner_a.x, -half_ring_height, inner_a.y)));
+				points.push_back(basis.xform(Vector3(inner_b.x, -half_ring_height, inner_b.y)));
+			}
+
+			for (int i = 0; i <= 120; i = i + 30) {
+				const float ra = Math::deg_to_rad((float)(i * 3));
+				const float ra_sin = Math::sin(ra);
+				const float ra_cos = Math::cos(ra);
+				const Point2 a = Vector2(ra_sin, ra_cos) * ring_radius;
+				const Point2 a2 = Vector2(ra_sin, ra_cos) * ring_radius_top;
+				const Point2 inner_a = Vector2(ra_sin, ra_cos) * ring_inner_radius;
+				const Point2 inner_a2 = Vector2(ra_sin, ra_cos) * ring_inner_radius_top;
+
+				// Outer 90 degrees vertical lines.
+				points.push_back(basis.xform(Vector3(a2.x, half_ring_height, a2.y)));
+				points.push_back(basis.xform(Vector3(a.x, -half_ring_height, a.y)));
+
+				// Inner 90 degrees vertical lines.
+				points.push_back(basis.xform(Vector3(inner_a2.x, half_ring_height, inner_a2.y)));
+				points.push_back(basis.xform(Vector3(inner_a.x, -half_ring_height, inner_a.y)));
+			}
+
+			if (p_gizmo->is_selected()) {
+				p_gizmo->add_lines(points, material);
+			}
+		}
+	}
+}

engine/editor/plugins/gizmos/particles_3d_emission_shape_gizmo_plugin.h

@@ -0,0 +1,57 @@
+/**************************************************************************/
+/*  particles_3d_emission_shape_gizmo_plugin.h                            */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef PARTICLES_3D_EMISSION_SHAPE_GIZMO_PLUGIN_H
+#define PARTICLES_3D_EMISSION_SHAPE_GIZMO_PLUGIN_H
+
+#include "editor/plugins/gizmos/gizmo_3d_helper.h"
+#include "editor/plugins/node_3d_editor_gizmos.h"
+
+class Particles3DEmissionShapeGizmoPlugin : public EditorNode3DGizmoPlugin {
+	GDCLASS(Particles3DEmissionShapeGizmoPlugin, EditorNode3DGizmoPlugin);
+
+	Ref<Gizmo3DHelper> helper;
+
+public:
+	bool has_gizmo(Node3D *p_spatial) override;
+	String get_gizmo_name() const override;
+	int get_priority() const override;
+	bool is_selectable_when_hidden() const override;
+	void redraw(EditorNode3DGizmo *p_gizmo) override;
+
+	String get_handle_name(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const override;
+	Variant get_handle_value(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const override;
+	void set_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, Camera3D *p_camera, const Point2 &p_point) override;
+	void commit_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, const Variant &p_restore, bool p_cancel = false) override;
+
+	Particles3DEmissionShapeGizmoPlugin();
+};
+
+#endif // PARTICLES_3D_EMISSION_SHAPE_GIZMO_PLUGIN_H

engine/editor/plugins/gizmos/physics_bone_3d_gizmo_plugin.cpp

@@ -0,0 +1,167 @@
+/**************************************************************************/
+/*  physics_bone_3d_gizmo_plugin.cpp                                      */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#include "physics_bone_3d_gizmo_plugin.h"
+
+#include "editor/editor_settings.h"
+#include "editor/plugins/gizmos/joint_3d_gizmo_plugin.h"
+#include "scene/3d/physical_bone_simulator_3d.h"
+#include "scene/3d/physics/physical_bone_3d.h"
+
+PhysicalBone3DGizmoPlugin::PhysicalBone3DGizmoPlugin() {
+	create_material("joint_material", EDITOR_GET("editors/3d_gizmos/gizmo_colors/joint"));
+}
+
+bool PhysicalBone3DGizmoPlugin::has_gizmo(Node3D *p_spatial) {
+	return Object::cast_to<PhysicalBone3D>(p_spatial) != nullptr;
+}
+
+String PhysicalBone3DGizmoPlugin::get_gizmo_name() const {
+	return "PhysicalBone3D";
+}
+
+int PhysicalBone3DGizmoPlugin::get_priority() const {
+	return -1;
+}
+
+void PhysicalBone3DGizmoPlugin::redraw(EditorNode3DGizmo *p_gizmo) {
+	p_gizmo->clear();
+
+	PhysicalBone3D *physical_bone = Object::cast_to<PhysicalBone3D>(p_gizmo->get_node_3d());
+
+	if (!physical_bone) {
+		return;
+	}
+
+	PhysicalBoneSimulator3D *sm(physical_bone->get_simulator());
+	if (!sm) {
+		return;
+	}
+
+	PhysicalBone3D *pb(sm->get_physical_bone(physical_bone->get_bone_id()));
+	if (!pb) {
+		return;
+	}
+
+	PhysicalBone3D *pbp(sm->get_physical_bone_parent(physical_bone->get_bone_id()));
+	if (!pbp) {
+		return;
+	}
+
+	Vector<Vector3> points;
+
+	switch (physical_bone->get_joint_type()) {
+		case PhysicalBone3D::JOINT_TYPE_PIN: {
+			Joint3DGizmoPlugin::CreatePinJointGizmo(physical_bone->get_joint_offset(), points);
+		} break;
+		case PhysicalBone3D::JOINT_TYPE_CONE: {
+			const PhysicalBone3D::ConeJointData *cjd(static_cast<const PhysicalBone3D::ConeJointData *>(physical_bone->get_joint_data()));
+			Joint3DGizmoPlugin::CreateConeTwistJointGizmo(
+					physical_bone->get_joint_offset(),
+					physical_bone->get_global_transform() * physical_bone->get_joint_offset(),
+					pb->get_global_transform(),
+					pbp->get_global_transform(),
+					cjd->swing_span,
+					cjd->twist_span,
+					&points,
+					&points);
+		} break;
+		case PhysicalBone3D::JOINT_TYPE_HINGE: {
+			const PhysicalBone3D::HingeJointData *hjd(static_cast<const PhysicalBone3D::HingeJointData *>(physical_bone->get_joint_data()));
+			Joint3DGizmoPlugin::CreateHingeJointGizmo(
+					physical_bone->get_joint_offset(),
+					physical_bone->get_global_transform() * physical_bone->get_joint_offset(),
+					pb->get_global_transform(),
+					pbp->get_global_transform(),
+					hjd->angular_limit_lower,
+					hjd->angular_limit_upper,
+					hjd->angular_limit_enabled,
+					points,
+					&points,
+					&points);
+		} break;
+		case PhysicalBone3D::JOINT_TYPE_SLIDER: {
+			const PhysicalBone3D::SliderJointData *sjd(static_cast<const PhysicalBone3D::SliderJointData *>(physical_bone->get_joint_data()));
+			Joint3DGizmoPlugin::CreateSliderJointGizmo(
+					physical_bone->get_joint_offset(),
+					physical_bone->get_global_transform() * physical_bone->get_joint_offset(),
+					pb->get_global_transform(),
+					pbp->get_global_transform(),
+					sjd->angular_limit_lower,
+					sjd->angular_limit_upper,
+					sjd->linear_limit_lower,
+					sjd->linear_limit_upper,
+					points,
+					&points,
+					&points);
+		} break;
+		case PhysicalBone3D::JOINT_TYPE_6DOF: {
+			const PhysicalBone3D::SixDOFJointData *sdofjd(static_cast<const PhysicalBone3D::SixDOFJointData *>(physical_bone->get_joint_data()));
+			Joint3DGizmoPlugin::CreateGeneric6DOFJointGizmo(
+					physical_bone->get_joint_offset(),
+
+					physical_bone->get_global_transform() * physical_bone->get_joint_offset(),
+					pb->get_global_transform(),
+					pbp->get_global_transform(),
+
+					sdofjd->axis_data[0].angular_limit_lower,
+					sdofjd->axis_data[0].angular_limit_upper,
+					sdofjd->axis_data[0].linear_limit_lower,
+					sdofjd->axis_data[0].linear_limit_upper,
+					sdofjd->axis_data[0].angular_limit_enabled,
+					sdofjd->axis_data[0].linear_limit_enabled,
+
+					sdofjd->axis_data[1].angular_limit_lower,
+					sdofjd->axis_data[1].angular_limit_upper,
+					sdofjd->axis_data[1].linear_limit_lower,
+					sdofjd->axis_data[1].linear_limit_upper,
+					sdofjd->axis_data[1].angular_limit_enabled,
+					sdofjd->axis_data[1].linear_limit_enabled,
+
+					sdofjd->axis_data[2].angular_limit_lower,
+					sdofjd->axis_data[2].angular_limit_upper,
+					sdofjd->axis_data[2].linear_limit_lower,
+					sdofjd->axis_data[2].linear_limit_upper,
+					sdofjd->axis_data[2].angular_limit_enabled,
+					sdofjd->axis_data[2].linear_limit_enabled,
+
+					points,
+					&points,
+					&points);
+		} break;
+		default:
+			return;
+	}
+
+	Ref<Material> material = get_material("joint_material", p_gizmo);
+
+	p_gizmo->add_collision_segments(points);
+	p_gizmo->add_lines(points, material);
+}

engine/editor/plugins/gizmos/physics_bone_3d_gizmo_plugin.h

@@ -0,0 +1,48 @@
+/**************************************************************************/
+/*  physics_bone_3d_gizmo_plugin.h                                        */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef PHYSICS_BONE_3D_GIZMO_PLUGIN_H
+#define PHYSICS_BONE_3D_GIZMO_PLUGIN_H
+
+#include "editor/plugins/node_3d_editor_gizmos.h"
+
+class PhysicalBone3DGizmoPlugin : public EditorNode3DGizmoPlugin {
+	GDCLASS(PhysicalBone3DGizmoPlugin, EditorNode3DGizmoPlugin);
+
+public:
+	bool has_gizmo(Node3D *p_spatial) override;
+	String get_gizmo_name() const override;
+	int get_priority() const override;
+	void redraw(EditorNode3DGizmo *p_gizmo) override;
+
+	PhysicalBone3DGizmoPlugin();
+};
+
+#endif // PHYSICS_BONE_3D_GIZMO_PLUGIN_H

engine/editor/plugins/gizmos/ray_cast_3d_gizmo_plugin.cpp

@@ -0,0 +1,69 @@
+/**************************************************************************/
+/*  ray_cast_3d_gizmo_plugin.cpp                                          */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#include "ray_cast_3d_gizmo_plugin.h"
+
+#include "scene/3d/physics/ray_cast_3d.h"
+
+RayCast3DGizmoPlugin::RayCast3DGizmoPlugin() {
+	const Color gizmo_color = SceneTree::get_singleton()->get_debug_collisions_color();
+	create_material("shape_material", gizmo_color);
+	const float gizmo_value = gizmo_color.get_v();
+	const Color gizmo_color_disabled = Color(gizmo_value, gizmo_value, gizmo_value, 0.65);
+	create_material("shape_material_disabled", gizmo_color_disabled);
+}
+
+bool RayCast3DGizmoPlugin::has_gizmo(Node3D *p_spatial) {
+	return Object::cast_to<RayCast3D>(p_spatial) != nullptr;
+}
+
+String RayCast3DGizmoPlugin::get_gizmo_name() const {
+	return "RayCast3D";
+}
+
+int RayCast3DGizmoPlugin::get_priority() const {
+	return -1;
+}
+
+void RayCast3DGizmoPlugin::redraw(EditorNode3DGizmo *p_gizmo) {
+	RayCast3D *raycast = Object::cast_to<RayCast3D>(p_gizmo->get_node_3d());
+
+	p_gizmo->clear();
+
+	const Ref<StandardMaterial3D> material = raycast->is_enabled() ? raycast->get_debug_material() : get_material("shape_material_disabled");
+
+	p_gizmo->add_lines(raycast->get_debug_line_vertices(), material);
+
+	if (raycast->get_debug_shape_thickness() > 1) {
+		p_gizmo->add_vertices(raycast->get_debug_shape_vertices(), material, Mesh::PRIMITIVE_TRIANGLE_STRIP);
+	}
+
+	p_gizmo->add_collision_segments(raycast->get_debug_line_vertices());
+}

engine/editor/plugins/gizmos/ray_cast_3d_gizmo_plugin.h

@@ -0,0 +1,48 @@
+/**************************************************************************/
+/*  ray_cast_3d_gizmo_plugin.h                                            */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef RAY_CAST_3D_GIZMO_PLUGIN_H
+#define RAY_CAST_3D_GIZMO_PLUGIN_H
+
+#include "editor/plugins/node_3d_editor_gizmos.h"
+
+class RayCast3DGizmoPlugin : public EditorNode3DGizmoPlugin {
+	GDCLASS(RayCast3DGizmoPlugin, EditorNode3DGizmoPlugin);
+
+public:
+	bool has_gizmo(Node3D *p_spatial) override;
+	String get_gizmo_name() const override;
+	int get_priority() const override;
+	void redraw(EditorNode3DGizmo *p_gizmo) override;
+
+	RayCast3DGizmoPlugin();
+};
+
+#endif // RAY_CAST_3D_GIZMO_PLUGIN_H

engine/editor/plugins/gizmos/reflection_probe_gizmo_plugin.cpp

@@ -0,0 +1,215 @@
+/**************************************************************************/
+/*  reflection_probe_gizmo_plugin.cpp                                     */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#include "reflection_probe_gizmo_plugin.h"
+
+#include "editor/editor_node.h"
+#include "editor/editor_settings.h"
+#include "editor/editor_string_names.h"
+#include "editor/editor_undo_redo_manager.h"
+#include "editor/plugins/gizmos/gizmo_3d_helper.h"
+#include "editor/plugins/node_3d_editor_plugin.h"
+#include "scene/3d/reflection_probe.h"
+
+ReflectionProbeGizmoPlugin::ReflectionProbeGizmoPlugin() {
+	helper.instantiate();
+	Color gizmo_color = EDITOR_GET("editors/3d_gizmos/gizmo_colors/reflection_probe");
+
+	create_material("reflection_probe_material", gizmo_color);
+
+	gizmo_color.a = 0.5;
+	create_material("reflection_internal_material", gizmo_color);
+
+	create_icon_material("reflection_probe_icon", EditorNode::get_singleton()->get_editor_theme()->get_icon(SNAME("GizmoReflectionProbe"), EditorStringName(EditorIcons)));
+	create_handle_material("handles");
+}
+
+ReflectionProbeGizmoPlugin::~ReflectionProbeGizmoPlugin() {
+}
+
+bool ReflectionProbeGizmoPlugin::has_gizmo(Node3D *p_spatial) {
+	return Object::cast_to<ReflectionProbe>(p_spatial) != nullptr;
+}
+
+String ReflectionProbeGizmoPlugin::get_gizmo_name() const {
+	return "ReflectionProbe";
+}
+
+int ReflectionProbeGizmoPlugin::get_priority() const {
+	return -1;
+}
+
+String ReflectionProbeGizmoPlugin::get_handle_name(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const {
+	if (p_id < 6) {
+		return helper->box_get_handle_name(p_id);
+	}
+	switch (p_id) {
+		case 6:
+			return "Origin X";
+		case 7:
+			return "Origin Y";
+		case 8:
+			return "Origin Z";
+	}
+	return "";
+}
+
+Variant ReflectionProbeGizmoPlugin::get_handle_value(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const {
+	ReflectionProbe *probe = Object::cast_to<ReflectionProbe>(p_gizmo->get_node_3d());
+	return AABB(probe->get_origin_offset(), probe->get_size());
+}
+
+void ReflectionProbeGizmoPlugin::begin_handle_action(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) {
+	// The initial value is only used for resizing the box, so we only need AABB size.
+	AABB aabb = get_handle_value(p_gizmo, p_id, p_secondary);
+	helper->initialize_handle_action(aabb.size, p_gizmo->get_node_3d()->get_global_transform());
+}
+
+void ReflectionProbeGizmoPlugin::set_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, Camera3D *p_camera, const Point2 &p_point) {
+	ReflectionProbe *probe = Object::cast_to<ReflectionProbe>(p_gizmo->get_node_3d());
+
+	Vector3 sg[2];
+	helper->get_segment(p_camera, p_point, sg);
+
+	if (p_id < 6) {
+		Vector3 size = probe->get_size();
+		Vector3 position;
+		helper->box_set_handle(sg, p_id, size, position);
+		probe->set_size(size);
+		probe->set_global_position(position);
+	} else {
+		p_id -= 6;
+
+		Vector3 origin = probe->get_origin_offset();
+		origin[p_id] = 0;
+
+		Vector3 axis;
+		axis[p_id] = 1.0;
+
+		Vector3 ra, rb;
+		Geometry3D::get_closest_points_between_segments(origin - axis * 16384, origin + axis * 16384, sg[0], sg[1], ra, rb);
+		// Adjust the actual position to account for the gizmo handle position
+		float d = ra[p_id] + 0.25;
+		if (Node3DEditor::get_singleton()->is_snap_enabled()) {
+			d = Math::snapped(d, Node3DEditor::get_singleton()->get_translate_snap());
+		}
+
+		origin[p_id] = d;
+		probe->set_origin_offset(origin);
+	}
+}
+
+void ReflectionProbeGizmoPlugin::commit_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, const Variant &p_restore, bool p_cancel) {
+	ReflectionProbe *probe = Object::cast_to<ReflectionProbe>(p_gizmo->get_node_3d());
+
+	if (p_id < 6) {
+		helper->box_commit_handle(TTR("Change Probe Size"), p_cancel, probe);
+		return;
+	}
+
+	AABB restore = p_restore;
+
+	if (p_cancel) {
+		probe->set_origin_offset(restore.position);
+		probe->set_size(restore.size);
+		return;
+	}
+
+	EditorUndoRedoManager *ur = EditorUndoRedoManager::get_singleton();
+	ur->create_action(TTR("Change Probe Origin Offset"));
+	ur->add_do_method(probe, "set_origin_offset", probe->get_origin_offset());
+	ur->add_undo_method(probe, "set_origin_offset", restore.position);
+	ur->commit_action();
+}
+
+void ReflectionProbeGizmoPlugin::redraw(EditorNode3DGizmo *p_gizmo) {
+	p_gizmo->clear();
+
+	if (p_gizmo->is_selected()) {
+		ReflectionProbe *probe = Object::cast_to<ReflectionProbe>(p_gizmo->get_node_3d());
+		Vector<Vector3> lines;
+		Vector<Vector3> internal_lines;
+		Vector3 size = probe->get_size();
+
+		AABB aabb;
+		aabb.position = -size / 2;
+		aabb.size = size;
+
+		AABB blend_aabb;
+		for (int i = 0; i < 3; i++) {
+			blend_aabb.position[i] = aabb.position[i] + probe->get_blend_distance();
+			blend_aabb.size[i] = aabb.size[i] - probe->get_blend_distance() * 2.0;
+			if (blend_aabb.size[i] < blend_aabb.position[i]) {
+				blend_aabb.position[i] = aabb.position[i] + aabb.size[i] / 2.0;
+				blend_aabb.size[i] = 0.0;
+			}
+		}
+
+		if (probe->get_blend_distance() != 0.0) {
+			for (int i = 0; i < 12; i++) {
+				Vector3 a;
+				Vector3 b;
+				blend_aabb.get_edge(i, a, b);
+				lines.push_back(a);
+				lines.push_back(b);
+			}
+
+			for (int i = 0; i < 8; i++) {
+				Vector3 ep = aabb.get_endpoint(i);
+				internal_lines.push_back(blend_aabb.get_endpoint(i));
+				internal_lines.push_back(ep);
+			}
+		}
+
+		Vector<Vector3> handles = helper->box_get_handles(probe->get_size());
+
+		if (probe->get_origin_offset() != Vector3(0.0, 0.0, 0.0)) {
+			for (int i = 0; i < 3; i++) {
+				Vector3 orig_handle = probe->get_origin_offset();
+				orig_handle[i] -= 0.25;
+				lines.push_back(orig_handle);
+
+				orig_handle[i] += 0.5;
+				lines.push_back(orig_handle);
+			}
+		}
+
+		Ref<Material> material = get_material("reflection_probe_material", p_gizmo);
+		Ref<Material> material_internal = get_material("reflection_internal_material", p_gizmo);
+
+		p_gizmo->add_lines(lines, material);
+		p_gizmo->add_lines(internal_lines, material_internal);
+
+		p_gizmo->add_handles(handles, get_material("handles"));
+	}
+
+	Ref<Material> icon = get_material("reflection_probe_icon", p_gizmo);
+	p_gizmo->add_unscaled_billboard(icon, 0.05);
+}

engine/editor/plugins/gizmos/reflection_probe_gizmo_plugin.h

@@ -0,0 +1,59 @@
+/**************************************************************************/
+/*  reflection_probe_gizmo_plugin.h                                       */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef REFLECTION_PROBE_GIZMO_PLUGIN_H
+#define REFLECTION_PROBE_GIZMO_PLUGIN_H
+
+#include "editor/plugins/node_3d_editor_gizmos.h"
+
+class Gizmo3DHelper;
+
+class ReflectionProbeGizmoPlugin : public EditorNode3DGizmoPlugin {
+	GDCLASS(ReflectionProbeGizmoPlugin, EditorNode3DGizmoPlugin);
+
+	Ref<Gizmo3DHelper> helper;
+
+public:
+	bool has_gizmo(Node3D *p_spatial) override;
+	String get_gizmo_name() const override;
+	int get_priority() const override;
+	void redraw(EditorNode3DGizmo *p_gizmo) override;
+
+	String get_handle_name(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const override;
+	Variant get_handle_value(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const override;
+	void begin_handle_action(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) override;
+	void set_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, Camera3D *p_camera, const Point2 &p_point) override;
+	void commit_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, const Variant &p_restore, bool p_cancel = false) override;
+
+	ReflectionProbeGizmoPlugin();
+	~ReflectionProbeGizmoPlugin();
+};
+
+#endif // REFLECTION_PROBE_GIZMO_PLUGIN_H

engine/editor/plugins/gizmos/shape_cast_3d_gizmo_plugin.cpp

@@ -0,0 +1,69 @@
+/**************************************************************************/
+/*  shape_cast_3d_gizmo_plugin.cpp                                        */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#include "shape_cast_3d_gizmo_plugin.h"
+
+#include "scene/3d/physics/shape_cast_3d.h"
+
+ShapeCast3DGizmoPlugin::ShapeCast3DGizmoPlugin() {
+	const Color gizmo_color = SceneTree::get_singleton()->get_debug_collisions_color();
+	create_material("shape_material", gizmo_color);
+	const float gizmo_value = gizmo_color.get_v();
+	const Color gizmo_color_disabled = Color(gizmo_value, gizmo_value, gizmo_value, 0.65);
+	create_material("shape_material_disabled", gizmo_color_disabled);
+}
+
+bool ShapeCast3DGizmoPlugin::has_gizmo(Node3D *p_spatial) {
+	return Object::cast_to<ShapeCast3D>(p_spatial) != nullptr;
+}
+
+String ShapeCast3DGizmoPlugin::get_gizmo_name() const {
+	return "ShapeCast3D";
+}
+
+int ShapeCast3DGizmoPlugin::get_priority() const {
+	return -1;
+}
+
+void ShapeCast3DGizmoPlugin::redraw(EditorNode3DGizmo *p_gizmo) {
+	ShapeCast3D *shapecast = Object::cast_to<ShapeCast3D>(p_gizmo->get_node_3d());
+
+	p_gizmo->clear();
+
+	const Ref<StandardMaterial3D> material = shapecast->is_enabled() ? shapecast->get_debug_material() : get_material("shape_material_disabled");
+
+	p_gizmo->add_lines(shapecast->get_debug_line_vertices(), material);
+
+	if (shapecast->get_shape().is_valid()) {
+		p_gizmo->add_lines(shapecast->get_debug_shape_vertices(), material);
+	}
+
+	p_gizmo->add_collision_segments(shapecast->get_debug_line_vertices());
+}

engine/editor/plugins/gizmos/shape_cast_3d_gizmo_plugin.h

@@ -0,0 +1,48 @@
+/**************************************************************************/
+/*  shape_cast_3d_gizmo_plugin.h                                          */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef SHAPE_CAST_3D_GIZMO_PLUGIN_H
+#define SHAPE_CAST_3D_GIZMO_PLUGIN_H
+
+#include "editor/plugins/node_3d_editor_gizmos.h"
+
+class ShapeCast3DGizmoPlugin : public EditorNode3DGizmoPlugin {
+	GDCLASS(ShapeCast3DGizmoPlugin, EditorNode3DGizmoPlugin);
+
+public:
+	bool has_gizmo(Node3D *p_spatial) override;
+	String get_gizmo_name() const override;
+	int get_priority() const override;
+	void redraw(EditorNode3DGizmo *p_gizmo) override;
+
+	ShapeCast3DGizmoPlugin();
+};
+
+#endif // SHAPE_CAST_3D_GIZMO_PLUGIN_H

engine/editor/plugins/gizmos/soft_body_3d_gizmo_plugin.cpp

@@ -0,0 +1,111 @@
+/**************************************************************************/
+/*  soft_body_3d_gizmo_plugin.cpp                                         */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#include "soft_body_3d_gizmo_plugin.h"
+
+#include "scene/3d/soft_body_3d.h"
+
+SoftBody3DGizmoPlugin::SoftBody3DGizmoPlugin() {
+	Color gizmo_color = SceneTree::get_singleton()->get_debug_collisions_color();
+	create_material("shape_material", gizmo_color);
+	create_handle_material("handles");
+}
+
+bool SoftBody3DGizmoPlugin::has_gizmo(Node3D *p_spatial) {
+	return Object::cast_to<SoftBody3D>(p_spatial) != nullptr;
+}
+
+String SoftBody3DGizmoPlugin::get_gizmo_name() const {
+	return "SoftBody3D";
+}
+
+int SoftBody3DGizmoPlugin::get_priority() const {
+	return -1;
+}
+
+bool SoftBody3DGizmoPlugin::is_selectable_when_hidden() const {
+	return true;
+}
+
+void SoftBody3DGizmoPlugin::redraw(EditorNode3DGizmo *p_gizmo) {
+	SoftBody3D *soft_body = Object::cast_to<SoftBody3D>(p_gizmo->get_node_3d());
+
+	p_gizmo->clear();
+
+	if (!soft_body || soft_body->get_mesh().is_null()) {
+		return;
+	}
+
+	// find mesh
+
+	Vector<Vector3> lines;
+
+	soft_body->get_mesh()->generate_debug_mesh_lines(lines);
+
+	if (!lines.size()) {
+		return;
+	}
+
+	Ref<TriangleMesh> tm = soft_body->get_mesh()->generate_triangle_mesh();
+
+	Vector<Vector3> points;
+	for (int i = 0; i < soft_body->get_mesh()->get_surface_count(); i++) {
+		Array arrays = soft_body->get_mesh()->surface_get_arrays(i);
+		ERR_CONTINUE(arrays.is_empty());
+
+		const Vector<Vector3> &vertices = arrays[Mesh::ARRAY_VERTEX];
+		points.append_array(vertices);
+	}
+
+	Ref<Material> material = get_material("shape_material", p_gizmo);
+
+	p_gizmo->add_lines(lines, material);
+	p_gizmo->add_handles(points, get_material("handles"));
+	p_gizmo->add_collision_triangles(tm);
+}
+
+String SoftBody3DGizmoPlugin::get_handle_name(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const {
+	return "SoftBody3D pin point";
+}
+
+Variant SoftBody3DGizmoPlugin::get_handle_value(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const {
+	SoftBody3D *soft_body = Object::cast_to<SoftBody3D>(p_gizmo->get_node_3d());
+	return Variant(soft_body->is_point_pinned(p_id));
+}
+
+void SoftBody3DGizmoPlugin::commit_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, const Variant &p_restore, bool p_cancel) {
+	SoftBody3D *soft_body = Object::cast_to<SoftBody3D>(p_gizmo->get_node_3d());
+	soft_body->pin_point_toggle(p_id);
+}
+
+bool SoftBody3DGizmoPlugin::is_handle_highlighted(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const {
+	SoftBody3D *soft_body = Object::cast_to<SoftBody3D>(p_gizmo->get_node_3d());
+	return soft_body->is_point_pinned(p_id);
+}

engine/editor/plugins/gizmos/soft_body_3d_gizmo_plugin.h

@@ -0,0 +1,54 @@
+/**************************************************************************/
+/*  soft_body_3d_gizmo_plugin.h                                           */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef SOFT_BODY_3D_GIZMO_PLUGIN_H
+#define SOFT_BODY_3D_GIZMO_PLUGIN_H
+
+#include "editor/plugins/node_3d_editor_gizmos.h"
+
+class SoftBody3DGizmoPlugin : public EditorNode3DGizmoPlugin {
+	GDCLASS(SoftBody3DGizmoPlugin, EditorNode3DGizmoPlugin);
+
+public:
+	bool has_gizmo(Node3D *p_spatial) override;
+	String get_gizmo_name() const override;
+	int get_priority() const override;
+	bool is_selectable_when_hidden() const override;
+	void redraw(EditorNode3DGizmo *p_gizmo) override;
+
+	String get_handle_name(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const override;
+	Variant get_handle_value(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const override;
+	void commit_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, const Variant &p_restore, bool p_cancel = false) override;
+	bool is_handle_highlighted(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const override;
+
+	SoftBody3DGizmoPlugin();
+};
+
+#endif // SOFT_BODY_3D_GIZMO_PLUGIN_H

engine/editor/plugins/gizmos/spring_arm_3d_gizmo_plugin.cpp

@@ -0,0 +1,66 @@
+/**************************************************************************/
+/*  spring_arm_3d_gizmo_plugin.cpp                                        */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#include "spring_arm_3d_gizmo_plugin.h"
+
+#include "scene/3d/physics/spring_arm_3d.h"
+
+void SpringArm3DGizmoPlugin::redraw(EditorNode3DGizmo *p_gizmo) {
+	SpringArm3D *spring_arm = Object::cast_to<SpringArm3D>(p_gizmo->get_node_3d());
+
+	p_gizmo->clear();
+
+	Vector<Vector3> lines = {
+		Vector3(),
+		Vector3(0, 0, 1.0) * spring_arm->get_length()
+	};
+
+	Ref<StandardMaterial3D> material = get_material("shape_material", p_gizmo);
+
+	p_gizmo->add_lines(lines, material);
+	p_gizmo->add_collision_segments(lines);
+}
+
+SpringArm3DGizmoPlugin::SpringArm3DGizmoPlugin() {
+	Color gizmo_color = SceneTree::get_singleton()->get_debug_collisions_color();
+	create_material("shape_material", gizmo_color);
+}
+
+bool SpringArm3DGizmoPlugin::has_gizmo(Node3D *p_spatial) {
+	return Object::cast_to<SpringArm3D>(p_spatial) != nullptr;
+}
+
+String SpringArm3DGizmoPlugin::get_gizmo_name() const {
+	return "SpringArm3D";
+}
+
+int SpringArm3DGizmoPlugin::get_priority() const {
+	return -1;
+}

engine/editor/plugins/gizmos/spring_arm_3d_gizmo_plugin.h

@@ -0,0 +1,48 @@
+/**************************************************************************/
+/*  spring_arm_3d_gizmo_plugin.h                                          */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef SPRING_ARM_3D_GIZMO_PLUGIN_H
+#define SPRING_ARM_3D_GIZMO_PLUGIN_H
+
+#include "editor/plugins/node_3d_editor_gizmos.h"
+
+class SpringArm3DGizmoPlugin : public EditorNode3DGizmoPlugin {
+	GDCLASS(SpringArm3DGizmoPlugin, EditorNode3DGizmoPlugin);
+
+public:
+	bool has_gizmo(Node3D *p_spatial) override;
+	String get_gizmo_name() const override;
+	int get_priority() const override;
+	void redraw(EditorNode3DGizmo *p_gizmo) override;
+
+	SpringArm3DGizmoPlugin();
+};
+
+#endif // SPRING_ARM_3D_GIZMO_PLUGIN_H

engine/editor/plugins/gizmos/spring_bone_3d_gizmo_plugin.cpp

@@ -0,0 +1,424 @@
+/**************************************************************************/
+/*  spring_bone_3d_gizmo_plugin.cpp                                       */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#include "spring_bone_3d_gizmo_plugin.h"
+
+#include "editor/editor_settings.h"
+#include "scene/3d/spring_bone_collision_capsule_3d.h"
+#include "scene/3d/spring_bone_collision_plane_3d.h"
+#include "scene/3d/spring_bone_collision_sphere_3d.h"
+
+// SpringBoneSimulator3D
+
+SpringBoneSimulator3DGizmoPlugin::SelectionMaterials SpringBoneSimulator3DGizmoPlugin::selection_materials;
+
+SpringBoneSimulator3DGizmoPlugin::SpringBoneSimulator3DGizmoPlugin() {
+	selection_materials.unselected_mat.instantiate();
+	selection_materials.unselected_mat->set_shading_mode(StandardMaterial3D::SHADING_MODE_UNSHADED);
+	selection_materials.unselected_mat->set_transparency(StandardMaterial3D::TRANSPARENCY_ALPHA);
+	selection_materials.unselected_mat->set_flag(StandardMaterial3D::FLAG_ALBEDO_FROM_VERTEX_COLOR, true);
+	selection_materials.unselected_mat->set_flag(StandardMaterial3D::FLAG_SRGB_VERTEX_COLOR, true);
+	selection_materials.unselected_mat->set_flag(StandardMaterial3D::FLAG_DISABLE_FOG, true);
+
+	selection_materials.selected_mat.instantiate();
+	Ref<Shader> sh;
+	sh.instantiate();
+	sh->set_code(R"(
+// Skeleton 3D gizmo bones shader.
+
+shader_type spatial;
+render_mode unshaded, shadows_disabled;
+void vertex() {
+	if (!OUTPUT_IS_SRGB) {
+		COLOR.rgb = mix( pow((COLOR.rgb + vec3(0.055)) * (1.0 / (1.0 + 0.055)), vec3(2.4)), COLOR.rgb* (1.0 / 12.92), lessThan(COLOR.rgb,vec3(0.04045)) );
+	}
+	VERTEX = VERTEX;
+	POSITION = PROJECTION_MATRIX * VIEW_MATRIX * MODEL_MATRIX * vec4(VERTEX.xyz, 1.0);
+	POSITION.z = mix(POSITION.z, POSITION.w, 0.998);
+}
+void fragment() {
+	ALBEDO = COLOR.rgb;
+	ALPHA = COLOR.a;
+}
+)");
+	selection_materials.selected_mat->set_shader(sh);
+}
+
+SpringBoneSimulator3DGizmoPlugin::~SpringBoneSimulator3DGizmoPlugin() {
+	selection_materials.unselected_mat.unref();
+	selection_materials.selected_mat.unref();
+}
+
+bool SpringBoneSimulator3DGizmoPlugin::has_gizmo(Node3D *p_spatial) {
+	return Object::cast_to<SpringBoneSimulator3D>(p_spatial) != nullptr;
+}
+
+String SpringBoneSimulator3DGizmoPlugin::get_gizmo_name() const {
+	return "SpringBoneSimulator3D";
+}
+
+int SpringBoneSimulator3DGizmoPlugin::get_priority() const {
+	return -1;
+}
+
+void SpringBoneSimulator3DGizmoPlugin::redraw(EditorNode3DGizmo *p_gizmo) {
+	SpringBoneSimulator3D *simulator = Object::cast_to<SpringBoneSimulator3D>(p_gizmo->get_node_3d());
+	p_gizmo->clear();
+
+	if (!simulator->get_setting_count()) {
+		return;
+	}
+
+	Skeleton3D *skeleton = simulator->get_skeleton();
+	if (!skeleton) {
+		return;
+	}
+
+	Ref<ArrayMesh> mesh = get_joints_mesh(skeleton, simulator, p_gizmo->is_selected());
+	Transform3D skel_tr = simulator->get_global_transform().inverse() * skeleton->get_global_transform();
+	p_gizmo->add_mesh(mesh, Ref<Material>(), skel_tr, skeleton->register_skin(skeleton->create_skin_from_rest_transforms()));
+}
+
+Ref<ArrayMesh> SpringBoneSimulator3DGizmoPlugin::get_joints_mesh(Skeleton3D *p_skeleton, SpringBoneSimulator3D *p_simulator, bool p_is_selected) {
+	Color bone_color = EDITOR_GET("editors/3d_gizmos/gizmo_colors/spring_bone_joint");
+
+	Ref<SurfaceTool> surface_tool;
+	surface_tool.instantiate();
+	surface_tool->begin(Mesh::PRIMITIVE_LINES);
+
+	if (p_is_selected) {
+		surface_tool->set_material(selection_materials.selected_mat);
+	} else {
+		selection_materials.unselected_mat->set_albedo(bone_color);
+		surface_tool->set_material(selection_materials.unselected_mat);
+	}
+
+	LocalVector<int> bones;
+	LocalVector<float> weights;
+	bones.resize(4);
+	weights.resize(4);
+	for (int i = 0; i < 4; i++) {
+		bones[i] = 0;
+		weights[i] = 0;
+	}
+	weights[0] = 1;
+
+	for (int i = 0; i < p_simulator->get_setting_count(); i++) {
+		int current_bone = -1;
+		int prev_bone = -1;
+		int joint_end = p_simulator->get_joint_count(i) - 1;
+		for (int j = 0; j <= joint_end; j++) {
+			current_bone = p_simulator->get_joint_bone(i, j);
+			if (j > 0) {
+				Transform3D parent_global_pose = p_skeleton->get_bone_global_rest(prev_bone);
+				Transform3D global_pose = p_skeleton->get_bone_global_rest(current_bone);
+				draw_line(surface_tool, parent_global_pose.origin, global_pose.origin, bone_color);
+				draw_sphere(surface_tool, global_pose.basis, global_pose.origin, p_simulator->get_joint_radius(i, j - 1), bone_color);
+			}
+			if (j == joint_end && p_simulator->is_end_bone_extended(i) && p_simulator->get_end_bone_length(i) > 0) {
+				Vector3 axis = p_simulator->get_end_bone_axis(current_bone, p_simulator->get_end_bone_direction(i));
+				if (axis.is_zero_approx()) {
+					continue;
+				}
+				bones[0] = current_bone;
+				surface_tool->set_bones(bones);
+				surface_tool->set_weights(weights);
+				Transform3D global_pose = p_skeleton->get_bone_global_rest(current_bone);
+				axis = global_pose.xform(axis * p_simulator->get_end_bone_length(i));
+				draw_line(surface_tool, global_pose.origin, axis, bone_color);
+				draw_sphere(surface_tool, global_pose.basis, axis, p_simulator->get_joint_radius(i, j), bone_color);
+			} else {
+				bones[0] = current_bone;
+				surface_tool->set_bones(bones);
+				surface_tool->set_weights(weights);
+			}
+			prev_bone = current_bone;
+		}
+	}
+
+	return surface_tool->commit();
+}
+
+void SpringBoneSimulator3DGizmoPlugin::draw_sphere(Ref<SurfaceTool> &p_surface_tool, const Basis &p_basis, const Vector3 &p_center, float p_radius, const Color &p_color) {
+	static const Vector3 VECTOR3_RIGHT = Vector3(1, 0, 0);
+	static const Vector3 VECTOR3_UP = Vector3(0, 1, 0);
+	static const Vector3 VECTOR3_FORWARD = Vector3(0, 0, 1);
+	static const int STEP = 16;
+	static const float SPPI = Math_TAU / (float)STEP;
+
+	for (int i = 1; i <= STEP; i++) {
+		p_surface_tool->set_color(p_color);
+		p_surface_tool->add_vertex(p_center + ((p_basis.xform(VECTOR3_UP * p_radius)).rotated(p_basis.xform(VECTOR3_RIGHT), SPPI * ((i - 1) % STEP))));
+		p_surface_tool->set_color(p_color);
+		p_surface_tool->add_vertex(p_center + ((p_basis.xform(VECTOR3_UP * p_radius)).rotated(p_basis.xform(VECTOR3_RIGHT), SPPI * (i % STEP))));
+	}
+	for (int i = 1; i <= STEP; i++) {
+		p_surface_tool->set_color(p_color);
+		p_surface_tool->add_vertex(p_center + ((p_basis.xform(VECTOR3_RIGHT * p_radius)).rotated(p_basis.xform(VECTOR3_FORWARD), SPPI * ((i - 1) % STEP))));
+		p_surface_tool->set_color(p_color);
+		p_surface_tool->add_vertex(p_center + ((p_basis.xform(VECTOR3_RIGHT * p_radius)).rotated(p_basis.xform(VECTOR3_FORWARD), SPPI * (i % STEP))));
+	}
+	for (int i = 1; i <= STEP; i++) {
+		p_surface_tool->set_color(p_color);
+		p_surface_tool->add_vertex(p_center + ((p_basis.xform(VECTOR3_FORWARD * p_radius)).rotated(p_basis.xform(VECTOR3_UP), SPPI * ((i - 1) % STEP))));
+		p_surface_tool->set_color(p_color);
+		p_surface_tool->add_vertex(p_center + ((p_basis.xform(VECTOR3_FORWARD * p_radius)).rotated(p_basis.xform(VECTOR3_UP), SPPI * (i % STEP))));
+	}
+}
+
+void SpringBoneSimulator3DGizmoPlugin::draw_line(Ref<SurfaceTool> &p_surface_tool, const Vector3 &p_begin_pos, const Vector3 &p_end_pos, const Color &p_color) {
+	p_surface_tool->set_color(p_color);
+	p_surface_tool->add_vertex(p_begin_pos);
+	p_surface_tool->set_color(p_color);
+	p_surface_tool->add_vertex(p_end_pos);
+}
+
+// SpringBoneCollision3D
+
+SpringBoneCollision3DGizmoPlugin::SelectionMaterials SpringBoneCollision3DGizmoPlugin::selection_materials;
+
+SpringBoneCollision3DGizmoPlugin::SpringBoneCollision3DGizmoPlugin() {
+	selection_materials.unselected_mat.instantiate();
+	selection_materials.unselected_mat->set_shading_mode(StandardMaterial3D::SHADING_MODE_UNSHADED);
+	selection_materials.unselected_mat->set_transparency(StandardMaterial3D::TRANSPARENCY_ALPHA);
+	selection_materials.unselected_mat->set_flag(StandardMaterial3D::FLAG_ALBEDO_FROM_VERTEX_COLOR, true);
+	selection_materials.unselected_mat->set_flag(StandardMaterial3D::FLAG_SRGB_VERTEX_COLOR, true);
+	selection_materials.unselected_mat->set_flag(StandardMaterial3D::FLAG_DISABLE_FOG, true);
+
+	selection_materials.selected_mat.instantiate();
+	Ref<Shader> sh;
+	sh.instantiate();
+	sh->set_code(R"(
+// Skeleton 3D gizmo bones shader.
+
+shader_type spatial;
+render_mode unshaded, shadows_disabled;
+void vertex() {
+	if (!OUTPUT_IS_SRGB) {
+		COLOR.rgb = mix( pow((COLOR.rgb + vec3(0.055)) * (1.0 / (1.0 + 0.055)), vec3(2.4)), COLOR.rgb* (1.0 / 12.92), lessThan(COLOR.rgb,vec3(0.04045)) );
+	}
+	VERTEX = VERTEX;
+	POSITION = PROJECTION_MATRIX * VIEW_MATRIX * MODEL_MATRIX * vec4(VERTEX.xyz, 1.0);
+	POSITION.z = mix(POSITION.z, POSITION.w, 0.998);
+}
+void fragment() {
+	ALBEDO = COLOR.rgb;
+	ALPHA = COLOR.a;
+}
+)");
+	selection_materials.selected_mat->set_shader(sh);
+}
+
+SpringBoneCollision3DGizmoPlugin::~SpringBoneCollision3DGizmoPlugin() {
+	selection_materials.unselected_mat.unref();
+	selection_materials.selected_mat.unref();
+}
+
+bool SpringBoneCollision3DGizmoPlugin::has_gizmo(Node3D *p_spatial) {
+	return Object::cast_to<SpringBoneCollision3D>(p_spatial) != nullptr;
+}
+
+String SpringBoneCollision3DGizmoPlugin::get_gizmo_name() const {
+	return "SpringBoneCollision3D";
+}
+
+int SpringBoneCollision3DGizmoPlugin::get_priority() const {
+	return -1;
+}
+
+void SpringBoneCollision3DGizmoPlugin::redraw(EditorNode3DGizmo *p_gizmo) {
+	SpringBoneCollision3D *collision = Object::cast_to<SpringBoneCollision3D>(p_gizmo->get_node_3d());
+	p_gizmo->clear();
+
+	Ref<ArrayMesh> mesh = get_collision_mesh(collision, p_gizmo->is_selected());
+	p_gizmo->add_mesh(mesh);
+}
+
+Ref<ArrayMesh> SpringBoneCollision3DGizmoPlugin::get_collision_mesh(SpringBoneCollision3D *p_collision, bool p_is_selected) {
+	Color collision_color = EDITOR_GET("editors/3d_gizmos/gizmo_colors/spring_bone_collision");
+	Color inside_collision_color = EDITOR_GET("editors/3d_gizmos/gizmo_colors/spring_bone_inside_collision");
+
+	Ref<SurfaceTool> surface_tool;
+	surface_tool.instantiate();
+	surface_tool->begin(Mesh::PRIMITIVE_LINES);
+
+	if (p_is_selected) {
+		surface_tool->set_material(selection_materials.selected_mat);
+	} else {
+		selection_materials.unselected_mat->set_albedo(collision_color);
+		surface_tool->set_material(selection_materials.unselected_mat);
+	}
+
+	SpringBoneCollisionSphere3D *sphere = Object::cast_to<SpringBoneCollisionSphere3D>(p_collision);
+	if (sphere) {
+		draw_sphere(surface_tool, sphere->get_radius(), sphere->is_inside() ? inside_collision_color : collision_color);
+		return surface_tool->commit();
+	}
+
+	SpringBoneCollisionCapsule3D *capsule = Object::cast_to<SpringBoneCollisionCapsule3D>(p_collision);
+	if (capsule) {
+		draw_capsule(surface_tool, capsule->get_radius(), capsule->get_height(), capsule->is_inside() ? inside_collision_color : collision_color);
+		return surface_tool->commit();
+	}
+
+	SpringBoneCollisionPlane3D *plane = Object::cast_to<SpringBoneCollisionPlane3D>(p_collision);
+	if (plane) {
+		draw_plane(surface_tool, collision_color);
+		return surface_tool->commit();
+	}
+
+	return surface_tool->commit();
+}
+
+void SpringBoneCollision3DGizmoPlugin::draw_sphere(Ref<SurfaceTool> &p_surface_tool, float p_radius, const Color &p_color) {
+	static const Vector3 VECTOR3_RIGHT = Vector3(1, 0, 0);
+	static const Vector3 VECTOR3_UP = Vector3(0, 1, 0);
+	static const Vector3 VECTOR3_FORWARD = Vector3(0, 0, 1);
+	static const int STEP = 16;
+	static const float SPPI = Math_TAU / (float)STEP;
+
+	for (int i = 1; i <= STEP; i++) {
+		p_surface_tool->set_color(p_color);
+		p_surface_tool->add_vertex((VECTOR3_UP * p_radius).rotated(VECTOR3_RIGHT, SPPI * ((i - 1) % STEP)));
+		p_surface_tool->set_color(p_color);
+		p_surface_tool->add_vertex((VECTOR3_UP * p_radius).rotated(VECTOR3_RIGHT, SPPI * (i % STEP)));
+	}
+	for (int i = 1; i <= STEP; i++) {
+		p_surface_tool->set_color(p_color);
+		p_surface_tool->add_vertex((VECTOR3_RIGHT * p_radius).rotated(VECTOR3_FORWARD, SPPI * ((i - 1) % STEP)));
+		p_surface_tool->set_color(p_color);
+		p_surface_tool->add_vertex((VECTOR3_RIGHT * p_radius).rotated(VECTOR3_FORWARD, SPPI * (i % STEP)));
+	}
+	for (int i = 1; i <= STEP; i++) {
+		p_surface_tool->set_color(p_color);
+		p_surface_tool->add_vertex((VECTOR3_FORWARD * p_radius).rotated(VECTOR3_UP, SPPI * ((i - 1) % STEP)));
+		p_surface_tool->set_color(p_color);
+		p_surface_tool->add_vertex((VECTOR3_FORWARD * p_radius).rotated(VECTOR3_UP, SPPI * (i % STEP)));
+	}
+}
+
+void SpringBoneCollision3DGizmoPlugin::draw_capsule(Ref<SurfaceTool> &p_surface_tool, float p_radius, float p_height, const Color &p_color) {
+	static const Vector3 VECTOR3_RIGHT = Vector3(1, 0, 0);
+	static const Vector3 VECTOR3_UP = Vector3(0, 1, 0);
+	static const Vector3 VECTOR3_FORWARD = Vector3(0, 0, 1);
+	static const int STEP = 16;
+	static const int HALF_STEP = 8;
+	static const float SPPI = Math_TAU / (float)STEP;
+	static const float HALF_PI = Math_PI * 0.5;
+
+	Vector3 top = VECTOR3_UP * (p_height * 0.5 - p_radius);
+	Vector3 bottom = -top;
+
+	for (int i = 1; i <= STEP; i++) {
+		p_surface_tool->set_color(p_color);
+		p_surface_tool->add_vertex((i - 1 < HALF_STEP ? top : bottom) + (VECTOR3_UP * p_radius).rotated(VECTOR3_RIGHT, -HALF_PI + SPPI * ((i - 1) % STEP)));
+		p_surface_tool->set_color(p_color);
+		p_surface_tool->add_vertex((i - 1 < HALF_STEP ? top : bottom) + (VECTOR3_UP * p_radius).rotated(VECTOR3_RIGHT, -HALF_PI + SPPI * (i % STEP)));
+	}
+	for (int i = 1; i <= STEP; i++) {
+		p_surface_tool->set_color(p_color);
+		p_surface_tool->add_vertex((i - 1 < HALF_STEP ? top : bottom) + (VECTOR3_RIGHT * p_radius).rotated(VECTOR3_FORWARD, SPPI * ((i - 1) % STEP)));
+		p_surface_tool->set_color(p_color);
+		p_surface_tool->add_vertex((i - 1 < HALF_STEP ? top : bottom) + (VECTOR3_RIGHT * p_radius).rotated(VECTOR3_FORWARD, SPPI * (i % STEP)));
+	}
+	for (int i = 1; i <= STEP; i++) {
+		p_surface_tool->set_color(p_color);
+		p_surface_tool->add_vertex(top + (VECTOR3_FORWARD * p_radius).rotated(VECTOR3_UP, SPPI * ((i - 1) % STEP)));
+		p_surface_tool->set_color(p_color);
+		p_surface_tool->add_vertex(top + (VECTOR3_FORWARD * p_radius).rotated(VECTOR3_UP, SPPI * (i % STEP)));
+	}
+	for (int i = 1; i <= STEP; i++) {
+		p_surface_tool->set_color(p_color);
+		p_surface_tool->add_vertex(bottom + (VECTOR3_FORWARD * p_radius).rotated(VECTOR3_UP, SPPI * ((i - 1) % STEP)));
+		p_surface_tool->set_color(p_color);
+		p_surface_tool->add_vertex(bottom + (VECTOR3_FORWARD * p_radius).rotated(VECTOR3_UP, SPPI * (i % STEP)));
+	}
+	LocalVector<Vector3> directions;
+	directions.resize(4);
+	directions[0] = VECTOR3_RIGHT;
+	directions[1] = -VECTOR3_RIGHT;
+	directions[2] = VECTOR3_FORWARD;
+	directions[3] = -VECTOR3_FORWARD;
+	for (int i = 0; i < 4; i++) {
+		Vector3 dir = directions[i] * p_radius;
+		p_surface_tool->set_color(p_color);
+		p_surface_tool->add_vertex(top + dir);
+		p_surface_tool->add_vertex(bottom + dir);
+	}
+}
+
+void SpringBoneCollision3DGizmoPlugin::draw_plane(Ref<SurfaceTool> &p_surface_tool, const Color &p_color) {
+	static const Vector3 VECTOR3_UP = Vector3(0, 1, 0);
+	static const float HALF_PI = Math_PI * 0.5;
+	static const float ARROW_LENGTH = 0.3;
+	static const float ARROW_HALF_WIDTH = 0.05;
+	static const float ARROW_TOP_HALF_WIDTH = 0.1;
+	static const float ARROW_TOP = 0.5;
+	static const float RECT_SIZE = 1.0;
+	static const int RECT_STEP_COUNT = 9;
+	static const float RECT_HALF_SIZE = RECT_SIZE * 0.5;
+	static const float RECT_STEP = RECT_SIZE / (float)RECT_STEP_COUNT;
+
+	p_surface_tool->set_color(p_color);
+
+	// Draw arrow of the normal.
+	LocalVector<Vector3> arrow;
+	arrow.resize(7);
+	arrow[0] = Vector3(0, ARROW_TOP, 0);
+	arrow[1] = Vector3(-ARROW_TOP_HALF_WIDTH, ARROW_LENGTH, 0);
+	arrow[2] = Vector3(-ARROW_HALF_WIDTH, ARROW_LENGTH, 0);
+	arrow[3] = Vector3(-ARROW_HALF_WIDTH, 0, 0);
+	arrow[4] = Vector3(ARROW_HALF_WIDTH, 0, 0);
+	arrow[5] = Vector3(ARROW_HALF_WIDTH, ARROW_LENGTH, 0);
+	arrow[6] = Vector3(ARROW_TOP_HALF_WIDTH, ARROW_LENGTH, 0);
+	for (int i = 0; i < 2; i++) {
+		Basis ma(VECTOR3_UP, HALF_PI * i);
+		for (uint32_t j = 0; j < arrow.size(); j++) {
+			Vector3 v1 = arrow[j];
+			Vector3 v2 = arrow[(j + 1) % arrow.size()];
+			p_surface_tool->add_vertex(ma.xform(v1));
+			p_surface_tool->add_vertex(ma.xform(v2));
+		}
+	}
+
+	// Draw dashed line of the rect.
+	for (int i = 0; i < 4; i++) {
+		Basis ma(VECTOR3_UP, HALF_PI * i);
+		for (int j = 0; j < RECT_STEP_COUNT; j++) {
+			if (j % 2 == 1) {
+				continue;
+			}
+			Vector3 v1 = Vector3(RECT_HALF_SIZE, 0, RECT_HALF_SIZE - RECT_STEP * j);
+			Vector3 v2 = Vector3(RECT_HALF_SIZE, 0, RECT_HALF_SIZE - RECT_STEP * (j + 1));
+			p_surface_tool->add_vertex(ma.xform(v1));
+			p_surface_tool->add_vertex(ma.xform(v2));
+		}
+	}
+}

engine/editor/plugins/gizmos/spring_bone_3d_gizmo_plugin.h

@@ -0,0 +1,89 @@
+/**************************************************************************/
+/*  spring_bone_3d_gizmo_plugin.h                                         */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef SPRING_BONE_3D_GIZMO_PLUGIN_H
+#define SPRING_BONE_3D_GIZMO_PLUGIN_H
+
+#include "editor/plugins/editor_plugin.h"
+#include "editor/plugins/node_3d_editor_plugin.h"
+#include "scene/3d/spring_bone_collision_3d.h"
+#include "scene/3d/spring_bone_simulator_3d.h"
+#include "scene/resources/surface_tool.h"
+
+class SpringBoneSimulator3DGizmoPlugin : public EditorNode3DGizmoPlugin {
+	GDCLASS(SpringBoneSimulator3DGizmoPlugin, EditorNode3DGizmoPlugin);
+
+	struct SelectionMaterials {
+		Ref<StandardMaterial3D> unselected_mat;
+		Ref<ShaderMaterial> selected_mat;
+	};
+	static SelectionMaterials selection_materials;
+
+public:
+	static Ref<ArrayMesh> get_joints_mesh(Skeleton3D *p_skeleton, SpringBoneSimulator3D *p_simulator, bool p_is_selected);
+	static void draw_sphere(Ref<SurfaceTool> &p_surface_tool, const Basis &p_basis, const Vector3 &p_center, float p_radius, const Color &p_color);
+	static void draw_line(Ref<SurfaceTool> &p_surface_tool, const Vector3 &p_begin_pos, const Vector3 &p_end_pos, const Color &p_color);
+
+	bool has_gizmo(Node3D *p_spatial) override;
+	String get_gizmo_name() const override;
+	int get_priority() const override;
+
+	void redraw(EditorNode3DGizmo *p_gizmo) override;
+
+	SpringBoneSimulator3DGizmoPlugin();
+	~SpringBoneSimulator3DGizmoPlugin();
+};
+
+class SpringBoneCollision3DGizmoPlugin : public EditorNode3DGizmoPlugin {
+	GDCLASS(SpringBoneCollision3DGizmoPlugin, EditorNode3DGizmoPlugin);
+
+	struct SelectionMaterials {
+		Ref<StandardMaterial3D> unselected_mat;
+		Ref<ShaderMaterial> selected_mat;
+	};
+	static SelectionMaterials selection_materials;
+
+public:
+	static Ref<ArrayMesh> get_collision_mesh(SpringBoneCollision3D *p_collision, bool p_is_selected);
+	static void draw_sphere(Ref<SurfaceTool> &p_surface_tool, float p_radius, const Color &p_color);
+	static void draw_capsule(Ref<SurfaceTool> &p_surface_tool, float p_radius, float p_height, const Color &p_color);
+	static void draw_plane(Ref<SurfaceTool> &p_surface_tool, const Color &p_color);
+
+	bool has_gizmo(Node3D *p_spatial) override;
+	String get_gizmo_name() const override;
+	int get_priority() const override;
+
+	void redraw(EditorNode3DGizmo *p_gizmo) override;
+
+	SpringBoneCollision3DGizmoPlugin();
+	~SpringBoneCollision3DGizmoPlugin();
+};
+
+#endif // SPRING_BONE_3D_GIZMO_PLUGIN_H

engine/editor/plugins/gizmos/sprite_base_3d_gizmo_plugin.cpp

@@ -0,0 +1,63 @@
+/**************************************************************************/
+/*  sprite_base_3d_gizmo_plugin.cpp                                       */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#include "sprite_base_3d_gizmo_plugin.h"
+
+#include "scene/3d/sprite_3d.h"
+
+SpriteBase3DGizmoPlugin::SpriteBase3DGizmoPlugin() {
+}
+
+bool SpriteBase3DGizmoPlugin::has_gizmo(Node3D *p_spatial) {
+	return Object::cast_to<SpriteBase3D>(p_spatial) != nullptr;
+}
+
+String SpriteBase3DGizmoPlugin::get_gizmo_name() const {
+	return "SpriteBase3D";
+}
+
+int SpriteBase3DGizmoPlugin::get_priority() const {
+	return -1;
+}
+
+bool SpriteBase3DGizmoPlugin::can_be_hidden() const {
+	return false;
+}
+
+void SpriteBase3DGizmoPlugin::redraw(EditorNode3DGizmo *p_gizmo) {
+	SpriteBase3D *sprite_base = Object::cast_to<SpriteBase3D>(p_gizmo->get_node_3d());
+
+	p_gizmo->clear();
+
+	Ref<TriangleMesh> tm = sprite_base->generate_triangle_mesh();
+	if (tm.is_valid()) {
+		p_gizmo->add_collision_triangles(tm);
+	}
+}

engine/editor/plugins/gizmos/sprite_base_3d_gizmo_plugin.h

@@ -0,0 +1,49 @@
+/**************************************************************************/
+/*  sprite_base_3d_gizmo_plugin.h                                         */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef SPRITE_BASE_3D_GIZMO_PLUGIN_H
+#define SPRITE_BASE_3D_GIZMO_PLUGIN_H
+
+#include "editor/plugins/node_3d_editor_gizmos.h"
+
+class SpriteBase3DGizmoPlugin : public EditorNode3DGizmoPlugin {
+	GDCLASS(SpriteBase3DGizmoPlugin, EditorNode3DGizmoPlugin);
+
+public:
+	bool has_gizmo(Node3D *p_spatial) override;
+	String get_gizmo_name() const override;
+	int get_priority() const override;
+	bool can_be_hidden() const override;
+	void redraw(EditorNode3DGizmo *p_gizmo) override;
+
+	SpriteBase3DGizmoPlugin();
+};
+
+#endif // SPRITE_BASE_3D_GIZMO_PLUGIN_H

engine/editor/plugins/gizmos/vehicle_body_3d_gizmo_plugin.cpp

@@ -0,0 +1,102 @@
+/**************************************************************************/
+/*  vehicle_body_3d_gizmo_plugin.cpp                                      */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#include "vehicle_body_3d_gizmo_plugin.h"
+
+#include "scene/3d/physics/vehicle_body_3d.h"
+
+VehicleWheel3DGizmoPlugin::VehicleWheel3DGizmoPlugin() {
+	Color gizmo_color = SceneTree::get_singleton()->get_debug_collisions_color();
+	create_material("shape_material", gizmo_color);
+}
+
+bool VehicleWheel3DGizmoPlugin::has_gizmo(Node3D *p_spatial) {
+	return Object::cast_to<VehicleWheel3D>(p_spatial) != nullptr;
+}
+
+String VehicleWheel3DGizmoPlugin::get_gizmo_name() const {
+	return "VehicleWheel3D";
+}
+
+int VehicleWheel3DGizmoPlugin::get_priority() const {
+	return -1;
+}
+
+void VehicleWheel3DGizmoPlugin::redraw(EditorNode3DGizmo *p_gizmo) {
+	VehicleWheel3D *car_wheel = Object::cast_to<VehicleWheel3D>(p_gizmo->get_node_3d());
+
+	p_gizmo->clear();
+
+	Vector<Vector3> points;
+
+	float r = car_wheel->get_radius();
+	const int skip = 10;
+	for (int i = 0; i <= 360; i += skip) {
+		float ra = Math::deg_to_rad((float)i);
+		float rb = Math::deg_to_rad((float)i + skip);
+		Point2 a = Vector2(Math::sin(ra), Math::cos(ra)) * r;
+		Point2 b = Vector2(Math::sin(rb), Math::cos(rb)) * r;
+
+		points.push_back(Vector3(0, a.x, a.y));
+		points.push_back(Vector3(0, b.x, b.y));
+
+		const int springsec = 4;
+
+		for (int j = 0; j < springsec; j++) {
+			float t = car_wheel->get_suspension_rest_length() * 5;
+			points.push_back(Vector3(a.x, i / 360.0 * t / springsec + j * (t / springsec), a.y) * 0.2);
+			points.push_back(Vector3(b.x, (i + skip) / 360.0 * t / springsec + j * (t / springsec), b.y) * 0.2);
+		}
+	}
+
+	//travel
+	points.push_back(Vector3(0, 0, 0));
+	points.push_back(Vector3(0, car_wheel->get_suspension_rest_length(), 0));
+
+	//axis
+	points.push_back(Vector3(r * 0.2, car_wheel->get_suspension_rest_length(), 0));
+	points.push_back(Vector3(-r * 0.2, car_wheel->get_suspension_rest_length(), 0));
+	//axis
+	points.push_back(Vector3(r * 0.2, 0, 0));
+	points.push_back(Vector3(-r * 0.2, 0, 0));
+
+	//forward line
+	points.push_back(Vector3(0, -r, 0));
+	points.push_back(Vector3(0, -r, r * 2));
+	points.push_back(Vector3(0, -r, r * 2));
+	points.push_back(Vector3(r * 2 * 0.2, -r, r * 2 * 0.8));
+	points.push_back(Vector3(0, -r, r * 2));
+	points.push_back(Vector3(-r * 2 * 0.2, -r, r * 2 * 0.8));
+
+	Ref<Material> material = get_material("shape_material", p_gizmo);
+
+	p_gizmo->add_lines(points, material);
+	p_gizmo->add_collision_segments(points);
+}

engine/editor/plugins/gizmos/vehicle_body_3d_gizmo_plugin.h

@@ -0,0 +1,48 @@
+/**************************************************************************/
+/*  vehicle_body_3d_gizmo_plugin.h                                        */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef VEHICLE_BODY_3D_GIZMO_PLUGIN_H
+#define VEHICLE_BODY_3D_GIZMO_PLUGIN_H
+
+#include "editor/plugins/node_3d_editor_gizmos.h"
+
+class VehicleWheel3DGizmoPlugin : public EditorNode3DGizmoPlugin {
+	GDCLASS(VehicleWheel3DGizmoPlugin, EditorNode3DGizmoPlugin);
+
+public:
+	bool has_gizmo(Node3D *p_spatial) override;
+	String get_gizmo_name() const override;
+	int get_priority() const override;
+	void redraw(EditorNode3DGizmo *p_gizmo) override;
+
+	VehicleWheel3DGizmoPlugin();
+};
+
+#endif // VEHICLE_BODY_3D_GIZMO_PLUGIN_H

engine/editor/plugins/gizmos/visible_on_screen_notifier_3d_gizmo_plugin.cpp

@@ -0,0 +1,194 @@
+/**************************************************************************/
+/*  visible_on_screen_notifier_3d_gizmo_plugin.cpp                        */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#include "visible_on_screen_notifier_3d_gizmo_plugin.h"
+
+#include "editor/editor_settings.h"
+#include "editor/editor_undo_redo_manager.h"
+#include "editor/plugins/node_3d_editor_plugin.h"
+#include "scene/3d/visible_on_screen_notifier_3d.h"
+
+VisibleOnScreenNotifier3DGizmoPlugin::VisibleOnScreenNotifier3DGizmoPlugin() {
+	Color gizmo_color = EDITOR_GET("editors/3d_gizmos/gizmo_colors/visibility_notifier");
+	create_material("visibility_notifier_material", gizmo_color);
+	gizmo_color.a = 0.1;
+	create_material("visibility_notifier_solid_material", gizmo_color);
+	create_handle_material("handles");
+}
+
+bool VisibleOnScreenNotifier3DGizmoPlugin::has_gizmo(Node3D *p_spatial) {
+	return Object::cast_to<VisibleOnScreenNotifier3D>(p_spatial) != nullptr;
+}
+
+String VisibleOnScreenNotifier3DGizmoPlugin::get_gizmo_name() const {
+	return "VisibleOnScreenNotifier3D";
+}
+
+int VisibleOnScreenNotifier3DGizmoPlugin::get_priority() const {
+	return -1;
+}
+
+String VisibleOnScreenNotifier3DGizmoPlugin::get_handle_name(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const {
+	switch (p_id) {
+		case 0:
+			return "Size X";
+		case 1:
+			return "Size Y";
+		case 2:
+			return "Size Z";
+		case 3:
+			return "Pos X";
+		case 4:
+			return "Pos Y";
+		case 5:
+			return "Pos Z";
+	}
+
+	return "";
+}
+
+Variant VisibleOnScreenNotifier3DGizmoPlugin::get_handle_value(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const {
+	VisibleOnScreenNotifier3D *notifier = Object::cast_to<VisibleOnScreenNotifier3D>(p_gizmo->get_node_3d());
+	return notifier->get_aabb();
+}
+
+void VisibleOnScreenNotifier3DGizmoPlugin::set_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, Camera3D *p_camera, const Point2 &p_point) {
+	VisibleOnScreenNotifier3D *notifier = Object::cast_to<VisibleOnScreenNotifier3D>(p_gizmo->get_node_3d());
+
+	Transform3D gt = notifier->get_global_transform();
+
+	Transform3D gi = gt.affine_inverse();
+
+	bool move = p_id >= 3;
+	p_id = p_id % 3;
+
+	AABB aabb = notifier->get_aabb();
+	Vector3 ray_from = p_camera->project_ray_origin(p_point);
+	Vector3 ray_dir = p_camera->project_ray_normal(p_point);
+
+	Vector3 sg[2] = { gi.xform(ray_from), gi.xform(ray_from + ray_dir * 4096) };
+
+	Vector3 ofs = aabb.get_center();
+
+	Vector3 axis;
+	axis[p_id] = 1.0;
+
+	if (move) {
+		Vector3 ra, rb;
+		Geometry3D::get_closest_points_between_segments(ofs - axis * 4096, ofs + axis * 4096, sg[0], sg[1], ra, rb);
+
+		float d = ra[p_id];
+		if (Node3DEditor::get_singleton()->is_snap_enabled()) {
+			d = Math::snapped(d, Node3DEditor::get_singleton()->get_translate_snap());
+		}
+
+		aabb.position[p_id] = d - 1.0 - aabb.size[p_id] * 0.5;
+		notifier->set_aabb(aabb);
+
+	} else {
+		Vector3 ra, rb;
+		Geometry3D::get_closest_points_between_segments(ofs, ofs + axis * 4096, sg[0], sg[1], ra, rb);
+
+		float d = ra[p_id] - ofs[p_id];
+		if (Node3DEditor::get_singleton()->is_snap_enabled()) {
+			d = Math::snapped(d, Node3DEditor::get_singleton()->get_translate_snap());
+		}
+
+		if (d < 0.001) {
+			d = 0.001;
+		}
+		//resize
+		aabb.position[p_id] = (aabb.position[p_id] + aabb.size[p_id] * 0.5) - d;
+		aabb.size[p_id] = d * 2;
+		notifier->set_aabb(aabb);
+	}
+}
+
+void VisibleOnScreenNotifier3DGizmoPlugin::commit_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, const Variant &p_restore, bool p_cancel) {
+	VisibleOnScreenNotifier3D *notifier = Object::cast_to<VisibleOnScreenNotifier3D>(p_gizmo->get_node_3d());
+
+	if (p_cancel) {
+		notifier->set_aabb(p_restore);
+		return;
+	}
+
+	EditorUndoRedoManager *ur = EditorUndoRedoManager::get_singleton();
+	ur->create_action(TTR("Change Notifier AABB"));
+	ur->add_do_method(notifier, "set_aabb", notifier->get_aabb());
+	ur->add_undo_method(notifier, "set_aabb", p_restore);
+	ur->commit_action();
+}
+
+void VisibleOnScreenNotifier3DGizmoPlugin::redraw(EditorNode3DGizmo *p_gizmo) {
+	VisibleOnScreenNotifier3D *notifier = Object::cast_to<VisibleOnScreenNotifier3D>(p_gizmo->get_node_3d());
+
+	p_gizmo->clear();
+
+	Vector<Vector3> lines;
+	AABB aabb = notifier->get_aabb();
+
+	for (int i = 0; i < 12; i++) {
+		Vector3 a, b;
+		aabb.get_edge(i, a, b);
+		lines.push_back(a);
+		lines.push_back(b);
+	}
+
+	Vector<Vector3> handles;
+
+	for (int i = 0; i < 3; i++) {
+		Vector3 ax;
+		ax[i] = aabb.position[i] + aabb.size[i];
+		ax[(i + 1) % 3] = aabb.position[(i + 1) % 3] + aabb.size[(i + 1) % 3] * 0.5;
+		ax[(i + 2) % 3] = aabb.position[(i + 2) % 3] + aabb.size[(i + 2) % 3] * 0.5;
+		handles.push_back(ax);
+	}
+
+	Vector3 center = aabb.get_center();
+	for (int i = 0; i < 3; i++) {
+		Vector3 ax;
+		ax[i] = 1.0;
+		handles.push_back(center + ax);
+		lines.push_back(center);
+		lines.push_back(center + ax);
+	}
+
+	Ref<Material> material = get_material("visibility_notifier_material", p_gizmo);
+
+	p_gizmo->add_lines(lines, material);
+	p_gizmo->add_collision_segments(lines);
+
+	if (p_gizmo->is_selected()) {
+		Ref<Material> solid_material = get_material("visibility_notifier_solid_material", p_gizmo);
+		p_gizmo->add_solid_box(solid_material, aabb.get_size(), aabb.get_center());
+	}
+
+	p_gizmo->add_handles(handles, get_material("handles"));
+}

engine/editor/plugins/gizmos/visible_on_screen_notifier_3d_gizmo_plugin.h

@@ -0,0 +1,53 @@
+/**************************************************************************/
+/*  visible_on_screen_notifier_3d_gizmo_plugin.h                          */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef VISIBLE_ON_SCREEN_NOTIFIER_3D_GIZMO_PLUGIN_H
+#define VISIBLE_ON_SCREEN_NOTIFIER_3D_GIZMO_PLUGIN_H
+
+#include "editor/plugins/node_3d_editor_gizmos.h"
+
+class VisibleOnScreenNotifier3DGizmoPlugin : public EditorNode3DGizmoPlugin {
+	GDCLASS(VisibleOnScreenNotifier3DGizmoPlugin, EditorNode3DGizmoPlugin);
+
+public:
+	bool has_gizmo(Node3D *p_spatial) override;
+	String get_gizmo_name() const override;
+	int get_priority() const override;
+	void redraw(EditorNode3DGizmo *p_gizmo) override;
+
+	String get_handle_name(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const override;
+	Variant get_handle_value(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const override;
+	void set_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, Camera3D *p_camera, const Point2 &p_point) override;
+	void commit_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, const Variant &p_restore, bool p_cancel = false) override;
+
+	VisibleOnScreenNotifier3DGizmoPlugin();
+};
+
+#endif // VISIBLE_ON_SCREEN_NOTIFIER_3D_GIZMO_PLUGIN_H

engine/editor/plugins/gizmos/voxel_gi_gizmo_plugin.cpp

@@ -0,0 +1,167 @@
+/**************************************************************************/
+/*  voxel_gi_gizmo_plugin.cpp                                             */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#include "voxel_gi_gizmo_plugin.h"
+
+#include "editor/editor_node.h"
+#include "editor/editor_settings.h"
+#include "editor/editor_string_names.h"
+#include "editor/plugins/gizmos/gizmo_3d_helper.h"
+#include "scene/3d/voxel_gi.h"
+
+VoxelGIGizmoPlugin::VoxelGIGizmoPlugin() {
+	helper.instantiate();
+
+	Color gizmo_color = EDITOR_GET("editors/3d_gizmos/gizmo_colors/voxel_gi");
+
+	create_material("voxel_gi_material", gizmo_color);
+
+	// This gizmo draws a lot of lines. Use a low opacity to make it not too intrusive.
+	gizmo_color.a = 0.02;
+	create_material("voxel_gi_internal_material", gizmo_color);
+
+	create_icon_material("voxel_gi_icon", EditorNode::get_singleton()->get_editor_theme()->get_icon(SNAME("GizmoVoxelGI"), EditorStringName(EditorIcons)));
+	create_handle_material("handles");
+}
+
+VoxelGIGizmoPlugin::~VoxelGIGizmoPlugin() {
+}
+
+bool VoxelGIGizmoPlugin::has_gizmo(Node3D *p_spatial) {
+	return Object::cast_to<VoxelGI>(p_spatial) != nullptr;
+}
+
+String VoxelGIGizmoPlugin::get_gizmo_name() const {
+	return "VoxelGI";
+}
+
+int VoxelGIGizmoPlugin::get_priority() const {
+	return -1;
+}
+
+String VoxelGIGizmoPlugin::get_handle_name(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const {
+	return helper->box_get_handle_name(p_id);
+}
+
+Variant VoxelGIGizmoPlugin::get_handle_value(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const {
+	VoxelGI *probe = Object::cast_to<VoxelGI>(p_gizmo->get_node_3d());
+	return probe->get_size();
+}
+
+void VoxelGIGizmoPlugin::begin_handle_action(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) {
+	helper->initialize_handle_action(get_handle_value(p_gizmo, p_id, p_secondary), p_gizmo->get_node_3d()->get_global_transform());
+}
+
+void VoxelGIGizmoPlugin::set_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, Camera3D *p_camera, const Point2 &p_point) {
+	VoxelGI *probe = Object::cast_to<VoxelGI>(p_gizmo->get_node_3d());
+
+	Vector3 sg[2];
+	helper->get_segment(p_camera, p_point, sg);
+
+	Vector3 size = probe->get_size();
+	Vector3 position;
+	helper->box_set_handle(sg, p_id, size, position);
+	probe->set_size(size);
+	probe->set_global_position(position);
+}
+
+void VoxelGIGizmoPlugin::commit_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, const Variant &p_restore, bool p_cancel) {
+	helper->box_commit_handle(TTR("Change Probe Size"), p_cancel, p_gizmo->get_node_3d());
+}
+
+void VoxelGIGizmoPlugin::redraw(EditorNode3DGizmo *p_gizmo) {
+	p_gizmo->clear();
+
+	if (p_gizmo->is_selected()) {
+		VoxelGI *probe = Object::cast_to<VoxelGI>(p_gizmo->get_node_3d());
+		Ref<Material> material = get_material("voxel_gi_material", p_gizmo);
+		Ref<Material> material_internal = get_material("voxel_gi_internal_material", p_gizmo);
+
+		Vector<Vector3> lines;
+		Vector3 size = probe->get_size();
+
+		static const int subdivs[VoxelGI::SUBDIV_MAX] = { 64, 128, 256, 512 };
+
+		AABB aabb = AABB(-size / 2, size);
+		int subdiv = subdivs[probe->get_subdiv()];
+		float cell_size = aabb.get_longest_axis_size() / subdiv;
+
+		for (int i = 0; i < 12; i++) {
+			Vector3 a, b;
+			aabb.get_edge(i, a, b);
+			lines.push_back(a);
+			lines.push_back(b);
+		}
+
+		p_gizmo->add_lines(lines, material);
+
+		lines.clear();
+
+		for (int i = 1; i < subdiv; i++) {
+			for (int j = 0; j < 3; j++) {
+				if (cell_size * i > aabb.size[j]) {
+					continue;
+				}
+
+				int j_n1 = (j + 1) % 3;
+				int j_n2 = (j + 2) % 3;
+
+				for (int k = 0; k < 4; k++) {
+					Vector3 from = aabb.position, to = aabb.position;
+					from[j] += cell_size * i;
+					to[j] += cell_size * i;
+
+					if (k & 1) {
+						to[j_n1] += aabb.size[j_n1];
+					} else {
+						to[j_n2] += aabb.size[j_n2];
+					}
+
+					if (k & 2) {
+						from[j_n1] += aabb.size[j_n1];
+						from[j_n2] += aabb.size[j_n2];
+					}
+
+					lines.push_back(from);
+					lines.push_back(to);
+				}
+			}
+		}
+
+		p_gizmo->add_lines(lines, material_internal);
+
+		Vector<Vector3> handles = helper->box_get_handles(probe->get_size());
+
+		p_gizmo->add_handles(handles, get_material("handles"));
+	}
+
+	Ref<Material> icon = get_material("voxel_gi_icon", p_gizmo);
+	p_gizmo->add_unscaled_billboard(icon, 0.05);
+}

engine/editor/plugins/gizmos/voxel_gi_gizmo_plugin.h

@@ -0,0 +1,59 @@
+/**************************************************************************/
+/*  voxel_gi_gizmo_plugin.h                                               */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef VOXEL_GI_GIZMO_PLUGIN_H
+#define VOXEL_GI_GIZMO_PLUGIN_H
+
+#include "editor/plugins/node_3d_editor_gizmos.h"
+
+class Gizmo3DHelper;
+
+class VoxelGIGizmoPlugin : public EditorNode3DGizmoPlugin {
+	GDCLASS(VoxelGIGizmoPlugin, EditorNode3DGizmoPlugin);
+
+	Ref<Gizmo3DHelper> helper;
+
+public:
+	bool has_gizmo(Node3D *p_spatial) override;
+	String get_gizmo_name() const override;
+	int get_priority() const override;
+	void redraw(EditorNode3DGizmo *p_gizmo) override;
+
+	String get_handle_name(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const override;
+	Variant get_handle_value(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const override;
+	void begin_handle_action(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) override;
+	void set_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, Camera3D *p_camera, const Point2 &p_point) override;
+	void commit_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, const Variant &p_restore, bool p_cancel = false) override;
+
+	VoxelGIGizmoPlugin();
+	~VoxelGIGizmoPlugin();
+};
+
+#endif // VOXEL_GI_GIZMO_PLUGIN_H