feat: implemented point primitive gizmo

modules/terrain_editor/point_primitive_node.cpp

@@ -0,0 +1,54 @@
+#include "point_primitive_node.h"
+#include "scene/3d/node_3d.h"
+#include "terrain_editor/macros.h"
+
+void PointPrimitiveNode::_bind_methods() {
+	BIND_GET_SET(primitive);
+	ClassDB::bind_method(D_METHOD("push_transform_changes"), &self_type::push_transform_changes);
+}
+
+void PointPrimitiveNode::on_underlying_changed() {
+	if (!this->pushing_change && this->is_inside_tree()) {
+		this->pushing_change = true;
+		Vector2 const center{ this->primitive->get_center() };
+		set_global_position({ center.x, this->primitive->get_height(), center.y });
+		this->pushing_change = false;
+	}
+}
+
+void PointPrimitiveNode::_notification(int what) {
+	switch (what) {
+		default:
+			return;
+		case NOTIFICATION_ENTER_TREE:
+			if (this->primitive.is_valid()) {
+				on_underlying_changed();
+			}
+			return;
+	}
+}
+
+void PointPrimitiveNode::push_transform_changes() {
+	if (this->primitive.is_valid()) {
+		this->pushing_change = true;
+		Vector3 const position{ get_global_position() };
+		this->primitive->set_center({ position.x, position.z });
+		this->primitive->set_height(position.y);
+		this->pushing_change = false;
+	}
+}
+
+void PointPrimitiveNode::set_primitive(Ref<PointPrimitive> primitive) {
+	if (this->primitive.is_valid()) {
+		this->primitive->disconnect_changed(underlying_changed_callable);
+	}
+	this->primitive = primitive;
+	if (this->primitive.is_valid()) {
+		primitive->connect_changed(underlying_changed_callable);
+		on_underlying_changed();
+	}
+}
+
+Ref<PointPrimitive> PointPrimitiveNode::get_primitive() const {
+	return this->primitive;
+}