97 lines
4.0 KiB
C
97 lines
4.0 KiB
C
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/********************************************************************************
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* OpenGL-Framework *
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* Copyright (c) 2013 Daniel Chappuis *
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*********************************************************************************
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* *
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* This software is provided 'as-is', without any express or implied warranty. *
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* In no event will the authors be held liable for any damages arising from the *
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* use of this software. *
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* *
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* Permission is granted to anyone to use this software for any purpose, *
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* including commercial applications, and to alter it and redistribute it *
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* freely, subject to the following restrictions: *
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* *
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* 1. The origin of this software must not be misrepresented; you must not claim *
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* that you wrote the original software. If you use this software in a *
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* product, an acknowledgment in the product documentation would be *
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* appreciated but is not required. *
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* *
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* 2. Altered source versions must be plainly marked as such, and must not be *
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* misrepresented as being the original software. *
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* *
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* 3. This notice may not be removed or altered from any source distribution. *
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* *
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********************************************************************************/
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#ifndef MESH_LOADER_H
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#define MESH_LOADER_H
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// Libraries
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#include <string>
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#include <stdexcept>
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#include "Mesh.h"
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namespace openglframework {
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// Class MeshReaderWriter
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// This class is used to read or write any mesh file in order to
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// create the corresponding Mesh object. Currently, this class
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// is able to read meshes of the current formats : .obj
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class MeshReaderWriter {
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private :
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// -------------------- Methods -------------------- //
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// Constructor (private because we do not want instances of this class)
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MeshReaderWriter();
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// Load an OBJ file with a triangular or quad mesh
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static void loadOBJFile(const std::string& filename, Mesh& meshToCreate);
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// Store a mesh into a OBJ file
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static void writeOBJFile(const std::string& filename, const Mesh &meshToWrite);
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public :
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// -------------------- Methods -------------------- //
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// Read a mesh from a file
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static void loadMeshFromFile(const std::string& filename, Mesh& meshToCreate);
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// Write a mesh to a file
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static void writeMeshToFile(const std::string& filename, const Mesh& meshToWrite);
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};
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// Class VertexMergingData
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// This class is used in the method to read a mesh
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class VertexMergingData {
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public:
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VertexMergingData() : indexPosition(0), indexNormal(0), indexUV(0) {}
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unsigned int indexPosition;
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unsigned int indexNormal;
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unsigned int indexUV;
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};
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// Class VertexMergingDataComparison
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// This class is used in the method to read a mesh
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class VertexMergingDataComparison {
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public:
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bool operator()(const VertexMergingData& x, const VertexMergingData& y) const {
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if(x.indexPosition < y.indexPosition)
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return true;
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if(x.indexPosition == y.indexPosition && x.indexNormal < y.indexNormal)
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return true;
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if(x.indexPosition == y.indexPosition && x.indexNormal ==
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y.indexNormal && x.indexUV < y.indexUV)
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return true;
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return false;
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}
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};
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}
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#endif
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