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- /*
- * Copyright (C) 2023 Christopher J. Howard
- *
- * This file is part of Antkeeper source code.
- *
- * Antkeeper source code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Antkeeper source code is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Antkeeper source code. If not, see <http://www.gnu.org/licenses/>.
- */
-
- #ifndef ANTKEEPER_GEOM_MESH_FUNCTIONS_HPP
- #define ANTKEEPER_GEOM_MESH_FUNCTIONS_HPP
-
- #include <engine/geom/primitives/box.hpp>
- #include <engine/geom/mesh.hpp>
- #include <engine/utility/fundamental-types.hpp>
- #include <array>
- #include <vector>
-
- namespace geom {
-
- /**
- * Creates a triangle mesh from a list of vertices and indices.
- *
- * @param[out] mesh Mesh to which vertices, edges, and faces will be added.
- * @param vertices Vertex positions
- * @param triangles Triangle indices
- * @return Newly created triangle mesh.
- */
- void create_triangle_mesh(mesh& mesh, const std::vector<float3>& vertices, const std::vector<std::array<std::uint_fast32_t, 3>>& triangles);
-
- /**
- * Calculates normals for each face.
- *
- * @param[out] Array in which faceted normals will be stored.
- */
- void calculate_face_normals(float3* normals, const mesh& mesh);
-
- float3 calculate_face_normal(const mesh::face& face);
-
- /**
- * Calculates smooth tangents per-vertex.
- *
- * @param[out] tangents Array in which vertex tangents will be stored. A bitangent sign is stored in each tangent vector's fourth component.
- * @param[in] texcoords Array containing vertex texture coordinates.
- * @param[in] normals Array containing vertex normals.
- */
- void calculate_vertex_tangents(float4* tangents, const float2* texcoords, const float3* normals, const mesh& mesh);
-
- /**
- * Calculates the AABB bounds of a mesh.
- */
- box<float> calculate_bounds(const mesh& mesh);
-
- /**
- * Triangulates a face by adding a new vertex in the center, then creating triangles between the edges of the original face and the new vertex.
- *
- * @param mesh Mesh containing the face to poke.
- * @param index Index of the face to poke.
- * @return Pointer to the newly-created vertex in the center of the face, or `nullptr` if the face could not be poked.
- */
- mesh::vertex* poke_face(mesh& mesh, std::size_t index);
-
- } // namespace geom
-
- #endif // ANTKEEPER_GEOM_MESH_FUNCTIONS_HPP
-
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