178 lines
6.6 KiB
C++
178 lines
6.6 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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@name Save in OFF format
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*/
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//@{
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#ifndef __VCGLIB_EXPORT_OFF
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#define __VCGLIB_EXPORT_OFF
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#include <stdio.h>
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#include <wrap/io_trimesh/io_mask.h>
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#include<wrap/io_trimesh/precision.h>
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#include <vcg/complex/algorithms/clean.h>
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#include <vcg/complex/algorithms/polygon_support.h>
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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 ExporterOFF
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{
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public:
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typedef typename SaveMeshType::VertexPointer VertexPointer;
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typedef typename SaveMeshType::ScalarType ScalarType;
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typedef typename SaveMeshType::VertexType VertexType;
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typedef typename SaveMeshType::FaceType FaceType;
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typedef typename SaveMeshType::FacePointer FacePointer;
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typedef typename SaveMeshType::VertexIterator VertexIterator;
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typedef typename SaveMeshType::FaceIterator FaceIterator;
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static int Save(SaveMeshType &m, const char * filename, int mask=0 )
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{
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vcg::face::Pos<FaceType> he;
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vcg::face::Pos<FaceType> hei;
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FILE * fpout = fopen(filename,"w");
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if(fpout==NULL) return 1; // 1 is the error code for cant'open, see the ErrorMsg function
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if( tri::HasPerVertexColor(m) && (mask & io::Mask::IOM_VERTNORMAL))
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fprintf(fpout,"N");
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if( tri::HasPerVertexColor(m) && (mask & io::Mask::IOM_VERTCOLOR))
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fprintf(fpout,"C");
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if( tri::HasPerVertexTexCoord(m) && (mask & io::Mask::IOM_VERTTEXCOORD))
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fprintf(fpout,"ST");
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fprintf(fpout,"OFF\n");
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int polynumber;
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if (mask &io::Mask::IOM_BITPOLYGONAL)
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polynumber = tri::Clean<SaveMeshType>::CountBitLargePolygons(m);
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else
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polynumber = m.fn;
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fprintf(fpout,"%d %d 0\n", m.vn, polynumber); // note that as edge number we simply write zero
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//vertices
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const int DGT = vcg::tri::io::Precision<ScalarType>::digits();
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for(auto vp=m.vert.begin();vp!=m.vert.end();++vp)
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{
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if( ! vp->IsD() )
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{ // ***** ASCII *****
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fprintf(fpout,"%.*g %.*g %.*g " ,DGT,vp->P()[0],DGT,vp->P()[1],DGT,vp->P()[2]);
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if( tri::HasPerVertexColor(m) && (mask & io::Mask::IOM_VERTCOLOR) )
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fprintf(fpout,"%d %d %d %d ",vp->C()[0],vp->C()[1],vp->C()[2],vp->C()[3] );
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if( tri::HasPerVertexNormal(m) && (mask & io::Mask::IOM_VERTNORMAL) )
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fprintf(fpout,"%g %g %g ", double(vp->N()[0]),double(vp->N()[1]),double(vp->N()[2]));
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if( tri::HasPerVertexTexCoord(m) && (mask & io::Mask::IOM_VERTTEXCOORD) )
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fprintf(fpout,"%g %g ",vp->T().u(),vp->T().v());
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fprintf(fpout,"\n");
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}
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}
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if (mask &io::Mask::IOM_BITPOLYGONAL) {
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tri::RequireFFAdjacency(m);
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std::vector<VertexPointer> polygon;
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tri::UpdateFlags<SaveMeshType>::FaceClearV(m);
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for(FaceIterator fi=m.face.begin();fi!=m.face.end();++fi) if (!fi->IsD()) if (!fi->IsV()) {
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vcg::tri::PolygonSupport<SaveMeshType,SaveMeshType>::ExtractPolygon(&*fi,polygon);
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//not sure why this std::reverse is needed. ExtractPolygon is used in
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//many other functions, and nobody complained. however, this list is
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//clockwise wrt fi normal.
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std::reverse(polygon.begin(), polygon.end());
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if(!polygon.empty())
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{
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fprintf(fpout,"%d ", int(polygon.size()) );
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for (size_t i=0; i<polygon.size(); i++)
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fprintf(fpout,"%lu ", tri::Index(m,polygon[i]));
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if( tri::HasPerFaceColor(m) && (mask & io::Mask::IOM_FACECOLOR) )
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fprintf(fpout,"%i %i %i", fi->C()[0],fi->C()[1],fi->C()[2] );
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fprintf(fpout,"\n");
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}
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}
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}
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else {
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for(FaceIterator fi=m.face.begin();fi!=m.face.end();++fi)
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{
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if( ! fi->IsD() )
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{
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fprintf(fpout,"%i ",fi->VN());
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for(int i=0;i<fi->VN();++i)
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fprintf(fpout,"%lu ",tri::Index(m,fi->V(i)));
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if( tri::HasPerFaceColor(m) && (mask & io::Mask::IOM_FACECOLOR) )
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fprintf(fpout,"%i %i %i", fi->C()[0],fi->C()[1],fi->C()[2] );
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fprintf(fpout,"\n");
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}
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}
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}
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int result = 0;
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if (ferror(fpout)) result = 2;
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fclose(fpout);
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return result;
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}
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static const char *ErrorMsg(int error)
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{
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static std::vector<std::string> off_error_msg;
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if (off_error_msg.empty())
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{
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off_error_msg.resize(3);
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off_error_msg[0] = "No errors";
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off_error_msg[1] = "Can't open file";
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off_error_msg[2] = "Output Stream error";
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}
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if (error>2 || error<0) return "Unknown error";
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else return off_error_msg[error].c_str();
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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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capability |= vcg::tri::io::Mask::IOM_VERTCOORD;
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capability |= vcg::tri::io::Mask::IOM_VERTCOLOR;
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capability |= vcg::tri::io::Mask::IOM_VERTTEXCOORD;
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capability |= vcg::tri::io::Mask::IOM_FACEINDEX;
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capability |= vcg::tri::io::Mask::IOM_FACECOLOR;
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capability |= vcg::tri::io::Mask::IOM_BITPOLYGONAL;
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return capability;
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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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//@}
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#endif
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