145 lines
4.9 KiB
C++
145 lines
4.9 KiB
C++
/****************************************************************************
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* VCGLib o o *
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* Visual and Computer Graphics Library o o *
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* _ O _ *
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* Copyright(C) 2004-2016 \/)\/ *
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* Visual Computing Lab /\/| *
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* ISTI - Italian National Research Council | *
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* \ *
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* All rights reserved. *
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* *
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* This program 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 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program 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 (http://www.gnu.org/licenses/gpl.txt) *
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* for more details. *
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* *
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****************************************************************************/
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/****************************************************************************
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History
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$Log: not supported by cvs2svn $
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Revision 1.5 2008/02/27 00:34:43 cignoni
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corrected various bugs in the export of texture coords
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Revision 1.4 2007/06/20 10:28:04 tarini
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"newline at end of file" and "endif" warnings fixed
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Revision 1.3 2006/11/09 07:51:44 cignoni
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bug due to wrong access to eventually unexistent FaceColor
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Revision 1.2 2006/10/09 19:58:08 cignoni
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Added casts to remove warnings
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Revision 1.1 2006/03/07 13:19:29 cignoni
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First Release with OBJ import support
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Revision 1.1 2006/02/16 19:28:36 fmazzant
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transfer of Export_3ds.h, Export_obj.h, Io_3ds_obj_material.h from Meshlab to vcg
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Revision 1.1 2006/02/06 11:04:40 fmazzant
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added file material.h. it include struct Material, CreateNewMaterial(...) and MaterialsCompare(...)
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****************************************************************************/
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#ifndef __VCGLIB_MATERIAL
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#define __VCGLIB_MATERIAL
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#include <string>
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#include <vector>
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#include <vcg/space/point3.h>
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namespace vcg {
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namespace tri {
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namespace io {
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/*
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structures material
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*/
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struct Material
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{
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unsigned int index=-1;//index of material
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std::string materialName;
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Point3f Ka=Point3f(0.2f, 0.2f, 0.2f);//ambient
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Point3f Kd=Point3f(1.0f, 1.0f, 1.0f);//diffuse
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Point3f Ks=Point3f(1.0f, 1.0f, 1.0f);//specular
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float d;//alpha
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float Tr=1.0f;//alpha
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int illum=2;//specular illumination
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float Ns=0.f;
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std::string map_Kd; //filename texture
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};
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template <class SaveMeshType>
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class Materials
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{
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public:
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typedef typename SaveMeshType::FaceType FaceType;
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typedef typename SaveMeshType::FaceIterator FaceIterator;
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typedef typename SaveMeshType::VertexIterator VertexIterator;
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typedef typename SaveMeshType::VertexType VertexType;
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/*
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creates a new meterial
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*/
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inline static int CreateNewMaterial(const SaveMeshType &m, std::vector<Material> &materials, const FaceType& f)
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{
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Material mtl;
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if(HasPerFaceColor(m)){
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mtl.Kd = Point3f((float)(f.C()[0])/255.0f,(float)(f.C()[1])/255.0f,(float)(f.C()[2])/255.0f);//diffuse
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mtl.Tr = (float)(f.C()[3])/255.0f;//alpha
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}
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if(m.textures.size() && f.WT(0).n() >=0 )
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mtl.map_Kd = m.textures[f.WT(0).n()];
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else
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mtl.map_Kd = "";
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int matInd = MaterialsCompare(materials,mtl);
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if(matInd == -1)
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{
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mtl.index = int(materials.size());
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materials.push_back(mtl);
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return mtl.index;
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}
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return matInd;
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}
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/*
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returns the index of the material if it exists inside the list of the materials,
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otherwise it returns -1.
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*/
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inline static int MaterialsCompare(std::vector<Material> &materials, Material mtl)
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{
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for(unsigned int i=0;i<materials.size();i++)
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{
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if(materials[i].Kd != mtl.Kd ) continue;
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if(materials[i].Ka != mtl.Ka ) continue;
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if(materials[i].Ks != mtl.Ks ) continue;
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if(materials[i].Tr != mtl.Tr ) continue;
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if(materials[i].illum != mtl.illum ) continue;
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if(materials[i].Ns != mtl.Ns ) continue;
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if(materials[i].map_Kd != mtl.map_Kd) continue;
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return i;
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}
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return -1;
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}
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};
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}
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}
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}
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#endif //__VCGLIB_MATERIAL
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