130 lines
5 KiB
C++
130 lines
5 KiB
C++
/**************************************************************************/
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/* convex_polygon_shape_3d.cpp */
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/**************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/**************************************************************************/
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/**************************************************************************/
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#include "convex_polygon_shape_3d.h"
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#include "core/math/convex_hull.h"
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#include "scene/resources/mesh.h"
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#include "servers/physics_server_3d.h"
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Vector<Vector3> ConvexPolygonShape3D::get_debug_mesh_lines() const {
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Vector<Vector3> poly_points = get_points();
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if (poly_points.size() > 1) { // Need at least 2 points for a line.
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Vector<Vector3> varr = Variant(poly_points);
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Geometry3D::MeshData md;
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Error err = ConvexHullComputer::convex_hull(varr, md);
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if (err == OK) {
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Vector<Vector3> lines;
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lines.resize(md.edges.size() * 2);
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for (uint32_t i = 0; i < md.edges.size(); i++) {
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lines.write[i * 2 + 0] = md.vertices[md.edges[i].vertex_a];
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lines.write[i * 2 + 1] = md.vertices[md.edges[i].vertex_b];
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}
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return lines;
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}
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}
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return Vector<Vector3>();
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}
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Ref<ArrayMesh> ConvexPolygonShape3D::get_debug_arraymesh_faces(const Color &p_modulate) const {
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const Vector<Vector3> hull_points = get_points();
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Vector<Vector3> verts;
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Vector<Color> colors;
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Vector<int> indices;
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if (hull_points.size() >= 3) {
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Geometry3D::MeshData md;
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Error err = ConvexHullComputer::convex_hull(hull_points, md);
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if (err == OK) {
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verts = md.vertices;
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for (int i = 0; i < verts.size(); i++) {
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colors.push_back(p_modulate);
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}
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for (const Geometry3D::MeshData::Face &face : md.faces) {
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const int first_point = face.indices[0];
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const int indices_count = face.indices.size();
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for (int i = 1; i < indices_count - 1; i++) {
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indices.push_back(first_point);
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indices.push_back(face.indices[i]);
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indices.push_back(face.indices[i + 1]);
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}
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}
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}
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}
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Ref<ArrayMesh> mesh = memnew(ArrayMesh);
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Array a;
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a.resize(Mesh::ARRAY_MAX);
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a[RS::ARRAY_VERTEX] = verts;
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a[RS::ARRAY_COLOR] = colors;
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a[RS::ARRAY_INDEX] = indices;
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mesh->add_surface_from_arrays(Mesh::PRIMITIVE_TRIANGLES, a);
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return mesh;
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}
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real_t ConvexPolygonShape3D::get_enclosing_radius() const {
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Vector<Vector3> data = get_points();
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const Vector3 *read = data.ptr();
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real_t r = 0.0;
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for (int i(0); i < data.size(); i++) {
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r = MAX(read[i].length_squared(), r);
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}
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return Math::sqrt(r);
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}
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void ConvexPolygonShape3D::_update_shape() {
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PhysicsServer3D::get_singleton()->shape_set_data(get_shape(), points);
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Shape3D::_update_shape();
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}
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void ConvexPolygonShape3D::set_points(const Vector<Vector3> &p_points) {
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points = p_points;
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_update_shape();
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emit_changed();
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}
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Vector<Vector3> ConvexPolygonShape3D::get_points() const {
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return points;
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}
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void ConvexPolygonShape3D::_bind_methods() {
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ClassDB::bind_method(D_METHOD("set_points", "points"), &ConvexPolygonShape3D::set_points);
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ClassDB::bind_method(D_METHOD("get_points"), &ConvexPolygonShape3D::get_points);
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ADD_PROPERTY(PropertyInfo(Variant::ARRAY, "points"), "set_points", "get_points");
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}
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ConvexPolygonShape3D::ConvexPolygonShape3D() :
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Shape3D(PhysicsServer3D::get_singleton()->shape_create(PhysicsServer3D::SHAPE_CONVEX_POLYGON)) {
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}
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