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93 lines
2.7 KiB
93 lines
2.7 KiB
#ifndef Magnum_MeshTools_Tipsify_h |
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#define Magnum_MeshTools_Tipsify_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 Class Magnum::MeshTools::Tipsify |
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*/ |
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#include <cstddef> |
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#include <vector> |
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#include "utilities.h" |
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namespace Magnum { namespace MeshTools { |
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/** |
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@brief %Mesh tipsifier implementation |
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See tipsify() for full documentation. |
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*/ |
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class MESHTOOLS_EXPORT Tipsify { |
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public: |
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/** |
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* @brief Constructor |
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* |
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* See tipsify() for full documentation. |
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*/ |
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inline Tipsify(std::vector<unsigned int>& indices, unsigned int vertexCount): indices(indices), vertexCount(vertexCount) {} |
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/** |
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* @brief Functor |
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* |
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* See tipsify() for full documentation. |
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*/ |
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void operator()(size_t cacheSize); |
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/** |
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* @brief Build vertex-triangle adjacency |
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* |
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* Computes count and indices of adjacent triangles for each vertex |
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* (used internally). |
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*/ |
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void buildAdjacency(std::vector<unsigned int>& liveTriangleCount, std::vector<unsigned int>& neighborOffset, std::vector<unsigned int>& neighbors) const; |
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private: |
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std::vector<unsigned int>& indices; |
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const unsigned int vertexCount; |
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}; |
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/** |
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@brief %Tipsify the mesh |
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@param indices Indices array to operate on |
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@param vertexCount Vertex count |
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@param cacheSize Post-transform vertex cache size |
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Optimizes the mesh for vertex-bound applications by rearranging its index |
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array for beter usage of post-transform vertex cache. Algorithm used: |
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<em>Pedro V. Sander, Diego Nehab, and Joshua Barczak, |
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<a href="http://gfx.cs.princeton.edu/pubs/Sander_2007_%3ETR/index.php">Fast |
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Triangle Reordering for Vertex Locality and Reduced Overdraw</a>, SIGGRAPH |
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2007</em>. |
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This is convenience function supplementing direct usage of Tipsify class, |
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instead of |
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@code |
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MeshBuilder<T> builder; |
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MeshTools::Tipsify{builder}(cacheSize); |
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@endcode |
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you can just write |
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@code |
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MeshTools::tipsify(builder, cacheSize); |
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@endcode |
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*/ |
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inline void tipsify(std::vector<unsigned int>& indices, unsigned int vertexCount, size_t cacheSize) { |
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Tipsify(indices, vertexCount)(cacheSize); |
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} |
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}} |
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#endif
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