initial commit, 4.5 stable

tests/core/math/test_triangle_mesh.h

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+/**************************************************************************/
+/*  test_triangle_mesh.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.                 */
+/**************************************************************************/
+
+#pragma once
+
+#include "core/math/triangle_mesh.h"
+#include "scene/resources/3d/primitive_meshes.h"
+
+#include "tests/test_macros.h"
+
+namespace TestTriangleMesh {
+
+TEST_CASE("[SceneTree][TriangleMesh] BVH creation and intersection") {
+	Ref<BoxMesh> box_mesh;
+	box_mesh.instantiate();
+
+	const Vector<Face3> faces = box_mesh->get_faces();
+
+	Ref<TriangleMesh> triangle_mesh;
+	triangle_mesh.instantiate();
+	CHECK(triangle_mesh->create_from_faces(Variant(faces)));
+
+	const Vector3 begin = Vector3(0.0, 2.0, 0.0);
+	const Vector3 end = Vector3(0.0, -2.0, 0.0);
+
+	{
+		Vector3 point;
+		Vector3 normal;
+		int32_t *surf_index = nullptr;
+		int32_t face_index = -1;
+		const bool has_result = triangle_mesh->intersect_segment(begin, end, point, normal, surf_index, &face_index);
+		CHECK(has_result);
+		CHECK(point.is_equal_approx(Vector3(0.0, 0.5, 0.0)));
+		CHECK(normal.is_equal_approx(Vector3(0.0, 1.0, 0.0)));
+		CHECK(surf_index == nullptr);
+		REQUIRE(face_index != -1);
+		CHECK(face_index == 8);
+	}
+
+	{
+		Vector3 dir = begin.direction_to(end);
+		Vector3 point;
+		Vector3 normal;
+		int32_t *surf_index = nullptr;
+		int32_t face_index = -1;
+		const bool has_result = triangle_mesh->intersect_ray(begin, dir, point, normal, surf_index, &face_index);
+		CHECK(has_result);
+		CHECK(point.is_equal_approx(Vector3(0.0, 0.5, 0.0)));
+		CHECK(normal.is_equal_approx(Vector3(0.0, 1.0, 0.0)));
+		CHECK(surf_index == nullptr);
+		REQUIRE(face_index != -1);
+		CHECK(face_index == 8);
+	}
+}
+} // namespace TestTriangleMesh