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108 lines
4.5 KiB
C++
108 lines
4.5 KiB
C++
/**************************************************************************/
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/* jolt_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 "jolt_convex_polygon_shape_3d.h"
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#include "../jolt_project_settings.h"
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#include "../misc/jolt_type_conversions.h"
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#include "Jolt/Physics/Collision/Shape/ConvexHullShape.h"
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JPH::ShapeRefC JoltConvexPolygonShape3D::_build() const {
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const int vertex_count = (int)vertices.size();
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if (unlikely(vertex_count == 0)) {
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return nullptr;
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}
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ERR_FAIL_COND_V_MSG(vertex_count < 3, nullptr, vformat("Failed to build Jolt Physics convex polygon shape with %s. It must have a vertex count of at least 3. This shape belongs to %s.", to_string(), _owners_to_string()));
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JPH::Array<JPH::Vec3> jolt_vertices;
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jolt_vertices.reserve((size_t)vertex_count);
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const Vector3 *vertices_begin = &vertices[0];
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const Vector3 *vertices_end = vertices_begin + vertex_count;
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for (const Vector3 *vertex = vertices_begin; vertex != vertices_end; ++vertex) {
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jolt_vertices.emplace_back((float)vertex->x, (float)vertex->y, (float)vertex->z);
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}
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const float min_half_extent = _calculate_aabb().get_shortest_axis_size() * 0.5f;
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const float actual_margin = MIN(margin, min_half_extent * JoltProjectSettings::collision_margin_fraction);
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const JPH::ConvexHullShapeSettings shape_settings(jolt_vertices, actual_margin);
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const JPH::ShapeSettings::ShapeResult shape_result = shape_settings.Create();
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ERR_FAIL_COND_V_MSG(shape_result.HasError(), nullptr, vformat("Failed to build Jolt Physics convex polygon shape with %s. It returned the following error: '%s'. This shape belongs to %s.", to_string(), to_godot(shape_result.GetError()), _owners_to_string()));
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return shape_result.Get();
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}
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AABB JoltConvexPolygonShape3D::_calculate_aabb() const {
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AABB result;
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for (int i = 0; i < vertices.size(); ++i) {
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if (i == 0) {
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result.position = vertices[i];
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} else {
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result.expand_to(vertices[i]);
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}
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}
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return result;
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}
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Variant JoltConvexPolygonShape3D::get_data() const {
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return vertices;
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}
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void JoltConvexPolygonShape3D::set_data(const Variant &p_data) {
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ERR_FAIL_COND(p_data.get_type() != Variant::PACKED_VECTOR3_ARRAY);
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vertices = p_data;
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aabb = _calculate_aabb();
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destroy();
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}
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void JoltConvexPolygonShape3D::set_margin(float p_margin) {
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if (unlikely(margin == p_margin)) {
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return;
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}
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margin = p_margin;
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destroy();
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}
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String JoltConvexPolygonShape3D::to_string() const {
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return vformat("{vertex_count=%d margin=%f}", vertices.size(), margin);
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}
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