471 lines
14 KiB
C++
471 lines
14 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 \/)\/ *
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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 1.10 2007/10/17 09:49:50 cignoni
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correct management of point only files
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Revision 1.9 2007/03/12 16:40:16 tarini
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Texture coord name change! "TCoord" and "Texture" are BAD. "TexCoord" is GOOD.
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Revision 1.8 2007/03/08 11:27:52 ganovelli
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added include to tcoord2
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Revision 1.7 2007/02/16 21:12:13 m_di_benedetto
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Commented out strange abort in WriteMaterials()
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Revision 1.6 2006/12/07 00:37:58 cignoni
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Corrected bug in the management of deleted vertices
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Revision 1.5 2006/10/09 19:58:08 cignoni
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Added casts to remove warnings
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Revision 1.4 2006/09/18 12:14:38 cignoni
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Removed bug in the creation of the material filename
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Revision 1.3 2006/03/07 13:19:29 cignoni
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First Release with OBJ import support
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Revision 1.2 2006/02/28 14:38:09 corsini
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remove qt include
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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 1.7 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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Revision 1.6 2006/02/04 10:18:46 fmazzant
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clean code
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Revision 1.5 2006/02/03 10:04:41 fmazzant
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no significant updated
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Revision 1.4 2006/01/30 14:02:05 fmazzant
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bug-fix
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Revision 1.3 2006/01/29 23:52:43 fmazzant
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correct a small bug
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Revision 1.2 2006/01/29 18:33:42 fmazzant
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added some comment to the code
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Revision 1.1 2006/01/29 16:33:03 fmazzant
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moved export_obj and export_3ds from test/io into meshio/
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Revision 1.34 2006/01/22 23:59:01 fmazzant
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changed default value of diffuse. 1.0 -> 0.8
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Revision 1.33 2006/01/19 09:36:29 fmazzant
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cleaned up history log
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Revision 1.32 2006/01/18 00:45:56 fmazzant
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added control on face's diffuse
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Revision 1.31 2006/01/17 13:48:54 fmazzant
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added capability mask on export file format
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Revision 1.30 2006/01/15 00:45:40 fmazzant
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extend mask exporter for all type file format +
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Revision 1.29 2006/01/14 00:03:26 fmazzant
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added more controls
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****************************************************************************/
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#ifndef __VCGLIB_EXPORT_OBJ
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#define __VCGLIB_EXPORT_OBJ
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#include <wrap/callback.h>
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#include <vcg/complex/trimesh/allocate.h>
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#include <vcg/space/texcoord2.h>
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#include <wrap/io_trimesh/io_mask.h>
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#include "io_material.h"
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#include <iostream>
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#include <fstream>
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#include <map>
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namespace vcg {
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namespace tri {
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namespace io {
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template <class SaveMeshType>
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class ExporterOBJ
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{
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public:
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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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enum of all the types of error
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*/
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enum SaveError
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{
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E_NOERROR, // 0
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E_CANTOPENFILE, // 1
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E_CANTCLOSEFILE, // 2
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E_UNESPECTEDEOF, // 3
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E_ABORTED, // 4
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E_NOTDEFINITION, // 5
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E_NOTVEXTEXVALID, // 6
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E_NOTFACESVALID // 7
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};
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/*
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this function takes an index and the relative error message gets back
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*/
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static const char* ErrorMsg(int error)
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{
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static const char* obj_error_msg[] =
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{
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"No errors", // 0
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"Can't open file", // 1
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"can't close file", // 2
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"Premature End of file", // 3
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"File saving aborted", // 4
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"Function not defined", // 5
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"Vertices not valid", // 6
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"Faces not valid" // 7
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};
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if(error>7 || error<0) return "Unknown error";
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else return obj_error_msg[error];
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};
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/*
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returns mask of capability one define with what are the saveable information of the format.
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*/
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static int GetExportMaskCapability()
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{
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int capability = 0;
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//vert
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capability |= vcg::tri::io::Mask::IOM_VERTNORMAL;
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capability |= vcg::tri::io::Mask::IOM_VERTTEXCOORD;
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//face
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capability |= vcg::tri::io::Mask::IOM_FACECOLOR;
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//wedg
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capability |= vcg::tri::io::Mask::IOM_WEDGTEXCOORD;
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capability |= vcg::tri::io::Mask::IOM_WEDGNORMAL;
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return capability;
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}
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/*
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function which saves in OBJ file format
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*/
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static int Save(SaveMeshType &m, const char * filename, int mask, CallBackPos *cb=0)
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{
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// texture coord and normal: cannot be saved BOTH per vertex and per wedge
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if (mask & vcg::tri::io::Mask::IOM_WEDGTEXCOORD &&
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mask & vcg::tri::io::Mask::IOM_VERTTEXCOORD ) {
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mask &= ~vcg::tri::io::Mask::IOM_VERTTEXCOORD;
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}
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if (mask & vcg::tri::io::Mask::IOM_WEDGCOLOR &&
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mask & vcg::tri::io::Mask::IOM_VERTCOLOR ) {
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mask &= ~vcg::tri::io::Mask::IOM_VERTCOLOR;
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}
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if(m.vn == 0) return E_NOTVEXTEXVALID;
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// Commented out this control. You should be allowed to save a point cloud.
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// if(m.fn == 0) return E_NOTFACESVALID;
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int current = 0;
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int totalPrimitives = m.vn+m.fn;
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std::vector<Material> materialVec;
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std::string fn(filename);
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int LastSlash=fn.size()-1;
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while(LastSlash>=0 && fn[LastSlash]!='/')
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--LastSlash;
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FILE *fp;
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fp = fopen(filename,"w");
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if(fp == NULL) return E_CANTOPENFILE;
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fprintf(fp,"####\n#\n# OBJ File Generated by Meshlab\n#\n####\n");
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fprintf(fp,"# Object %s\n#\n# Vertices: %d\n# Faces: %d\n#\n####\n",fn.substr(LastSlash+1).c_str(),m.vn,m.fn);
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//library materialVec
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if( (mask & vcg::tri::io::Mask::IOM_FACECOLOR) || (mask & Mask::IOM_WEDGTEXCOORD) )
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fprintf(fp,"mtllib ./%s.mtl\n\n",fn.substr(LastSlash+1).c_str());
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//vertexs + normal
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VertexIterator vi;
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std::map<Point3f,int> NormalVertex;
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std::vector<int> VertexId(m.vert.size());
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int numvert = 0;
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int curNormalIndex = 1;
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for(vi=m.vert.begin(); vi!=m.vert.end(); ++vi) if( !(*vi).IsD() )
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{
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VertexId[vi-m.vert.begin()]=numvert;
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//saves normal per vertex
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if (mask & Mask::IOM_WEDGNORMAL )
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{
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if(AddNewNormalVertex(NormalVertex,(*vi).N(),curNormalIndex))
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{
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fprintf(fp,"vn %f %f %f\n",(*vi).N()[0],(*vi).N()[1],(*vi).N()[2]);
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curNormalIndex++;
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}
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}
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if (mask & Mask::IOM_VERTNORMAL ) {
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fprintf(fp,"vn %f %f %f\n",(*vi).N()[0],(*vi).N()[1],(*vi).N()[2]);
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}
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if (mask & Mask::IOM_VERTTEXCOORD ) {
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fprintf(fp,"vt %f %f\n",(*vi).T().P()[0],(*vi).T().P()[1]);
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}
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//if (mask & Mask::IOM_VERTCOLOR ) {
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// fprintf(fp,"vc %f %f %f\n",(*vi).T().P()[0],(*vi).T().P()[1]);
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//}
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//saves vertex
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fprintf(fp,"v %f %f %f\n",(*vi).P()[0],(*vi).P()[1],(*vi).P()[2]);
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if (cb !=NULL) {
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if(!(*cb)((100*++current)/totalPrimitives, "writing vertices "))
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{ fclose(fp); return E_ABORTED;} }
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numvert++;
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}
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assert(numvert == m.vn);
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fprintf(fp,"# %d vertices, %d vertices normals\n\n",m.vn,int(NormalVertex.size()));
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//faces + texture coords
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FaceIterator fi;
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std::map<vcg::TexCoord2<float>,int> CoordIndexTexture;
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unsigned int material_num = 0;
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int mem_index = 0; //var temporany
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int curTexCoordIndex = 1;
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for(fi=m.face.begin(); fi!=m.face.end(); ++fi) if( !(*fi).IsD() )
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{
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if((mask & Mask::IOM_FACECOLOR) || (mask & Mask::IOM_WEDGTEXCOORD) )
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{
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int index = Materials<SaveMeshType>::CreateNewMaterial(m,materialVec,material_num,fi);
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if(index == (int)materialVec.size())//inserts a new element material
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{
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material_num++;
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fprintf(fp,"\nusemtl material_%d\n",materialVec[index-1].index);
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mem_index = index-1;
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}
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else
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{
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if(index != mem_index)//inserts old name elemente material
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{
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fprintf(fp,"\nusemtl material_%d\n",materialVec[index].index);
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mem_index=index;
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}
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}
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}
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//saves texture coord x wedge
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if(HasPerWedgeTexCoord(m) && (mask & Mask::IOM_WEDGTEXCOORD))
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for(unsigned int k=0;k<3;k++)
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{
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{
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if(AddNewTextureCoord(CoordIndexTexture,(*fi).WT(k),curTexCoordIndex))
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{
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fprintf(fp,"vt %f %f\n",(*fi).WT(k).u(),(*fi).WT(k).v());
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curTexCoordIndex++; //ncreases the value number to be associated to the Texture
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}
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}
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}
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fprintf(fp,"f ");
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for(unsigned int k=0;k<3;k++)
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{
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if(k!=0) fprintf(fp," ");
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int vInd = -1;
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// +1 because Obj file format begins from index = 1 but not from index = 0.
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vInd = VertexId[GetIndexVertex(m, (*fi).V(k))] + 1;//index of vertex per face
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int vt = -1;
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if(mask & Mask::IOM_WEDGTEXCOORD)
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vt = GetIndexVertexTexture(CoordIndexTexture,(*fi).WT(k));//index of vertex texture per face
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if (mask & Mask::IOM_VERTTEXCOORD)
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vt = vInd;
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int vn = -1;
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if(mask & Mask::IOM_WEDGNORMAL )
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vn = GetIndexVertexNormal(m, NormalVertex, (*fi).V(k)->cN());//index of vertex normal per face.
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if (mask & Mask::IOM_VERTNORMAL)
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vn = vInd;
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//writes elements on file obj
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WriteFacesElement(fp,vInd,vt,vn);
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}
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fprintf(fp,"\n");
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if (cb !=NULL) {
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if(!(*cb)((100*++current)/totalPrimitives, "writing vertices "))
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{ fclose(fp); return E_ABORTED;}
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}
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}//for
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fprintf(fp,"# %d faces, %d coords texture\n\n",m.fn,int(CoordIndexTexture.size()));
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fprintf(fp,"# End of File");
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fclose(fp);
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int r = 0;
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if((mask & Mask::IOM_WEDGTEXCOORD) || (mask & Mask::IOM_FACECOLOR) )
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r = WriteMaterials(materialVec, filename,cb);//write material
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if(r!= E_NOERROR)
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return r;
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return E_NOERROR;
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}
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/*
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returns index of the vertex
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*/
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inline static int GetIndexVertex(SaveMeshType &m, VertexType *p)
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{
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return p-&*(m.vert.begin());
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}
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/*
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returns index of the texture coord
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*/
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inline static int GetIndexVertexTexture(std::map<TexCoord2<float>,int> &mapTexToInt, const vcg::TexCoord2<float> &wt)
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{
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std::map<vcg::TexCoord2<float>,int>::iterator iter= mapTexToInt.find(wt);
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if(iter != mapTexToInt.end()) return (*iter).second;
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else return -1;
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// Old wrong version.
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// int index = mapTexToInt[wt];
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// if(index!=0){return index;}
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}
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/*
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returns index of the vertex normal
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*/
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inline static int GetIndexVertexNormal(SaveMeshType &/*m*/, std::map<Point3f,int> &mapNormToInt, const Point3f &norm )
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{
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std::map<Point3f,int>::iterator iter= mapNormToInt.find(norm);
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if(iter != mapNormToInt.end()) return (*iter).second;
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else return -1;
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// Old wrong version.
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// int index = mapNormToInt[m.vert[iv].N()];
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// if(index!=0){return index;}
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}
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/*
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write elements on file
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f v/tc/vn v/tc/vn v/tc/vn ...
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f v/tc v/tc v/tc ...
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f v//vn v//vn v//vn ...
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f v v v ...
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*/
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inline static void WriteFacesElement(FILE *fp,int v,int vt, int vn)
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{
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fprintf(fp,"%d",v);
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if(vt!=-1)
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{
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fprintf(fp,"/%d",vt);
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if(vn!=-1)
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fprintf(fp,"/%d",vn);
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}
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else if(vn!=-1)
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fprintf(fp,"//%d",vn);
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}
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/*
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adds a new index to the coordinate of Texture if it is the first time
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which is otherwise met not execute anything
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*/
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inline static bool AddNewTextureCoord(std::map<vcg::TexCoord2<float>,int> &m, const vcg::TexCoord2<float> &wt,int value)
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{
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int index = m[wt];
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if(index==0){m[wt]=value;return true;}
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return false;
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}
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/*
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adds a new index to the normal per vertex if it is the first time
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which is otherwise met does not execute anything
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*/
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inline static bool AddNewNormalVertex(std::map<Point3f,int> &m, Point3f &n ,int value)
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{
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int index = m[n];
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if(index==0){m[n]=value;return true;}
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return false;
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}
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/*
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writes material into file
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*/
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inline static int WriteMaterials(std::vector<Material> &materialVec, const char * filename, CallBackPos *cb=0)
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{
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std::string fileName = std::string(filename);
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fileName+=".mtl";
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if(materialVec.size() > 0)
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{
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FILE *fp;
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fp = fopen(fileName.c_str(),"w");
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if(fp==NULL)return E_ABORTED;
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fprintf(fp,"#\n# Wavefront material file\n# Converted by Meshlab Group\n#\n\n");
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int current = 0;
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for(unsigned int i=0;i<materialVec.size();i++)
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{
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if (cb !=NULL)
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(*cb)((100 * ++current)/materialVec.size(), "saving material file ");
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else
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{ /* fclose(fp); return E_ABORTED; */ }
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fprintf(fp,"newmtl material_%d\n",materialVec[i].index);
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fprintf(fp,"Ka %f %f %f\n",materialVec[i].Ka[0],materialVec[i].Ka[1],materialVec[i].Ka[2]);
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fprintf(fp,"Kd %f %f %f\n",materialVec[i].Kd[0],materialVec[i].Kd[1],materialVec[i].Kd[2]);
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fprintf(fp,"Ks %f %f %f\n",materialVec[i].Ks[0],materialVec[i].Ks[1],materialVec[i].Ks[2]);
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fprintf(fp,"Tr %f\n",materialVec[i].Tr);
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fprintf(fp,"illum %d\n",materialVec[i].illum);
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fprintf(fp,"Ns %f\n",materialVec[i].Ns);
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if(materialVec[i].map_Kd.size()>0)
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fprintf(fp,"map_Kd %s\n",materialVec[i].map_Kd.c_str());
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fprintf(fp,"\n");
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}
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fclose(fp);
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}
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return E_NOERROR;
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}
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}; // end class
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} // end Namespace tri
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} // end Namespace io
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} // end Namespace vcg
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#endif
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