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55 lines
1.7 KiB
55 lines
1.7 KiB
#ifndef Magnum_MeshTools_GenerateFlatNormals_h |
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#define Magnum_MeshTools_GenerateFlatNormals_h |
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/* |
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Copyright © 2010, 2011, 2012 Vladimír Vondruš <mosra@centrum.cz> |
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This file is part of Magnum. |
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Magnum is free software: you can redistribute it and/or modify |
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it under the terms of the GNU Lesser General Public License version 3 |
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only, as published by the Free Software Foundation. |
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Magnum 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 Lesser General Public License version 3 for more details. |
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*/ |
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/** @file |
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* @brief Function Magnum::MeshTools::generateFlatNormals() |
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*/ |
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#include <tuple> |
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#include "Magnum.h" |
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#include "MeshToolsVisibility.h" |
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namespace Magnum { namespace MeshTools { |
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/** @ingroup mesh |
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@brief Generate flat normals |
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@param indices Array of triangle face indexes |
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@param vertices Vertex array |
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@return Normal indices and vectors |
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For each face generates one normal vector, removes duplicates before |
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returning. Example usage: |
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@code |
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std::vector<unsigned int> vertexIndices; |
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std::vector<Vector4> vertices; |
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std::vector<unsigned int> normalIndices; |
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std::vector<Vector3> normals; |
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std::tie(normalIndices, normals) = MeshTools::generateFlatNormals(vertexIndices, vertices); |
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@endcode |
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You can then use combineIndexedArrays() to combine normal and vertex array to |
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use the same indices. |
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@attention Index count must be divisible by 3, otherwise zero length result |
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is generated. |
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*/ |
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std::tuple<std::vector<unsigned int>, std::vector<Vector3>> MESHTOOLS_EXPORT generateFlatNormals(const std::vector<unsigned int>& indices, const std::vector<Vector4>& vertices); |
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}} |
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#endif
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