💿🐜 Antkeeper source code
https://antkeeper.com
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67 lines
2.2 KiB
67 lines
2.2 KiB
/*
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* Copyright (C) 2021 Christopher J. Howard
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*
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* This file is part of Antkeeper source code.
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*
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* Antkeeper source code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Antkeeper source code is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Antkeeper source code. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef ANTKEEPER_GEOM_MESH_FUNCTIONS_HPP
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#define ANTKEEPER_GEOM_MESH_FUNCTIONS_HPP
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#include "geom/aabb.hpp"
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#include "geom/mesh.hpp"
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#include "utility/fundamental-types.hpp"
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#include <array>
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#include <vector>
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namespace geom {
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/**
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* Creates a triangle mesh from a list of vertices and indices.
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*
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* @param[out] mesh Mesh to which vertices, edges, and faces will be added.
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* @param vertices Vertex positions
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* @param triangles Triangle indices
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* @return Newly created triangle mesh.
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*/
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void create_triangle_mesh(mesh& mesh, const std::vector<float3>& vertices, const std::vector<std::array<std::uint_fast32_t, 3>>& triangles);
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/**
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* Calculates normals for each face.
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*
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* @param[out] Array in which faceted normals will be stored.
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*/
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void calculate_face_normals(float3* normals, const mesh& mesh);
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float3 calculate_face_normal(const mesh::face& face);
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/**
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* Calculates smooth tangents per-vertex.
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*
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* @param[out] tangents Array in which vertex tangents will be stored. A bitangent sign is stored in each tangent vector's fourth component.
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* @param[in] texcoords Array containing vertex texture coordinates.
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* @param[in] normals Array containing vertex normals.
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*/
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void calculate_vertex_tangents(float4* tangents, const float2* texcoords, const float3* normals, const mesh& mesh);
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/**
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* Calculates the AABB bounds of a mesh.
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*/
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aabb<float> calculate_bounds(const mesh& mesh);
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} // namespace geom
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#endif // ANTKEEPER_GEOM_MESH_FUNCTIONS_HPP
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