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/****************************************************************************
* VCGLib o o *
* Visual and Computer Graphics Library o o *
* _ O _ *
* Copyright(C) 2004 \/)\/ *
* Visual Computing Lab /\/| *
* ISTI - Italian National Research Council | *
* \ *
* All rights reserved. *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License (http://www.gnu.org/licenses/gpl.txt) *
* for more details. *
* *
****************************************************************************/
/****************************************************************************
History
$Log: not supported by cvs2svn $
Revision 1.5 2008/02/27 00:34:43 cignoni
corrected various bugs in the export of texture coords
Revision 1.4 2007/06/20 10:28:04 tarini
"newline at end of file" and "endif" warnings fixed
Revision 1.3 2006/11/09 07:51:44 cignoni
bug due to wrong access to eventually unexistent FaceColor
Revision 1.2 2006/10/09 19:58:08 cignoni
Added casts to remove warnings
Revision 1.1 2006/03/07 13:19:29 cignoni
First Release with OBJ import support
Revision 1.1 2006/02/16 19:28:36 fmazzant
transfer of Export_3ds.h, Export_obj.h, Io_3ds_obj_material.h from Meshlab to vcg
Revision 1.1 2006/02/06 11:04:40 fmazzant
added file material.h. it include struct Material, CreateNewMaterial(...) and MaterialsCompare(...)
****************************************************************************/
#ifndef __VCGLIB_MATERIAL
#define __VCGLIB_MATERIAL
#include <string>
#include <vector>
#include <vcg/space/point3.h>
namespace vcg {
namespace tri {
namespace io {
/*
structures material
*/
struct Material
{
unsigned int index;//index of material
std::string materialName;
Point3f Ka;//ambient
Point3f Kd;//diffuse
Point3f Ks;//specular
float d;//alpha
float Tr;//alpha
int illum;//specular illumination
float Ns;
std::string map_Kd; //filename texture
};
template <class SaveMeshType>
class Materials
{
public:
typedef typename SaveMeshType::FaceIterator FaceIterator;
typedef typename SaveMeshType::VertexIterator VertexIterator;
typedef typename SaveMeshType::VertexType VertexType;
/*
creates a new meterial
*/
inline static int CreateNewMaterial(SaveMeshType &m, std::vector<Material> &materials, unsigned int index, FaceIterator &fi)
{
Point3f diffuse(1,1,1);
float Transp = 1;
if(HasPerFaceColor(m)){
diffuse = Point3f((float)((*fi).C()[0])/255.0f,(float)((*fi).C()[1])/255.0f,(float)((*fi).C()[2])/255.0f);//diffuse
Transp = (float)((*fi).C()[3])/255.0f;//alpha
}
int illum = 2; //default not use Ks!
float ns = 0.0; //default
Material mtl;
mtl.index = index;//index of materials
mtl.Ka = Point3f(0.2f,0.2f,0.2f);//ambient
mtl.Kd = diffuse;//diffuse
mtl.Ks = Point3f(1.0f,1.0f,1.0f);//specular
mtl.Tr = Transp;//alpha
mtl.Ns = ns;
mtl.illum = illum;//illumination
if(m.textures.size() && (*fi).WT(0).n() >=0 )
mtl.map_Kd = m.textures[(*fi).WT(0).n()];
else
mtl.map_Kd = "";
int i = -1;
if((i = MaterialsCompare(materials,mtl)) == -1)
{
materials.push_back(mtl);
return materials.size();
}
return i;
}
/*
returns the index of the material if it exists inside the list of the materials,
otherwise it returns -1.
*/
inline static int MaterialsCompare(std::vector<Material> &materials, Material mtl)
{
for(unsigned int i=0;i<materials.size();i++)
{
if(materials[i].Kd != mtl.Kd ) continue;
if(materials[i].Ka != mtl.Ka ) continue;
if(materials[i].Ks != mtl.Ks ) continue;
if(materials[i].Tr != mtl.Tr ) continue;
if(materials[i].illum != mtl.illum ) continue;
if(materials[i].Ns != mtl.Ns ) continue;
if(materials[i].map_Kd != mtl.map_Kd) continue;
return i;
}
return -1;
}
};
}
}
}
#endif //__VCGLIB_MATERIAL
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