e3a06c3a9e
With this PR it's possible to add a collision during the Mesh import, directly in editor. To generate the shape is possible to chose between the following options: - Decompose Convex: The Mesh is decomposed in one or many Convex Shapes (Using the VHACD library). - Simple Convex: Is generated a convex shape that enclose the entire mesh. - Trimesh: Generate a trimesh shape using the Mesh faces. - Box: Add a primitive box shape, where you can tweak the `size`, `position`, `rotation`. - Sphere: Add a primitive sphere shape, where you can tweak the `radius`, `position`, `rotation`. - Cylinder: Add a primitive cylinder shape, where you can tweak the `height`, `radius`, `position`, `rotation`. - Capsule: Add a primitive capsule shape, where you can tweak the `height`, `radius`, `position`, `rotation`. It's also possible to chose the generated body, so you can create: - Rigid Body - Static Body - Area
103 lines
4.5 KiB
C++
103 lines
4.5 KiB
C++
/*************************************************************************/
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/* register_types.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) 2007-2021 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
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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 "register_types.h"
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#include "scene/resources/mesh.h"
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#include "thirdparty/vhacd/public/VHACD.h"
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static Vector<Vector<Face3>> convex_decompose(const Vector<Face3> &p_faces, const Mesh::ConvexDecompositionSettings &p_settings) {
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VHACD::IVHACD::Parameters params;
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params.m_concavity = p_settings.max_concavity;
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params.m_alpha = p_settings.symmetry_planes_clipping_bias;
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params.m_beta = p_settings.revolution_axes_clipping_bias;
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params.m_minVolumePerCH = p_settings.min_volume_per_convex_hull;
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params.m_resolution = p_settings.resolution;
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params.m_maxNumVerticesPerCH = p_settings.max_num_vertices_per_convex_hull;
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params.m_planeDownsampling = p_settings.plane_downsampling;
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params.m_convexhullDownsampling = p_settings.convexhull_downsampling;
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params.m_pca = p_settings.normalize_mesh;
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params.m_mode = p_settings.mode;
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params.m_convexhullApproximation = p_settings.convexhull_approximation;
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params.m_oclAcceleration = true;
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params.m_maxConvexHulls = p_settings.max_convex_hulls;
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params.m_projectHullVertices = p_settings.project_hull_vertices;
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Vector<real_t> vertices;
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vertices.resize(p_faces.size() * 9);
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Vector<uint32_t> indices;
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indices.resize(p_faces.size() * 3);
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for (int i = 0; i < p_faces.size(); i++) {
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for (int j = 0; j < 3; j++) {
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vertices.write[i * 9 + j * 3 + 0] = p_faces[i].vertex[j].x;
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vertices.write[i * 9 + j * 3 + 1] = p_faces[i].vertex[j].y;
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vertices.write[i * 9 + j * 3 + 2] = p_faces[i].vertex[j].z;
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indices.write[i * 3 + j] = i * 3 + j;
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}
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}
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VHACD::IVHACD *decomposer = VHACD::CreateVHACD();
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decomposer->Compute(vertices.ptr(), vertices.size() / 3, indices.ptr(), indices.size() / 3, params);
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int hull_count = decomposer->GetNConvexHulls();
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Vector<Vector<Face3>> ret;
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for (int i = 0; i < hull_count; i++) {
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Vector<Face3> triangles;
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VHACD::IVHACD::ConvexHull hull;
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decomposer->GetConvexHull(i, hull);
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triangles.resize(hull.m_nTriangles);
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for (uint32_t j = 0; j < hull.m_nTriangles; j++) {
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Face3 f;
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for (int k = 0; k < 3; k++) {
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for (int l = 0; l < 3; l++) {
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f.vertex[k][l] = hull.m_points[hull.m_triangles[j * 3 + k] * 3 + l];
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}
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}
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triangles.write[j] = f;
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}
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ret.push_back(triangles);
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}
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decomposer->Clean();
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decomposer->Release();
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return ret;
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}
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void register_vhacd_types() {
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Mesh::convex_composition_function = convex_decompose;
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}
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void unregister_vhacd_types() {
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Mesh::convex_composition_function = nullptr;
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}
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