174 lines
5.4 KiB
C++
174 lines
5.4 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 1.8 2006/09/18 08:55:33 cignoni
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Corrected return value of save function (zero is no error)
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Revision 1.7 2006/01/30 13:43:59 cignoni
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Added GetExportMaskCapability
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Revision 1.6 2006/01/13 15:47:43 cignoni
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Uniformed return type to the style of Open. Now every export function returns 0 in case of success.
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Revision 1.5 2005/12/01 00:58:56 cignoni
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Added and removed typenames for gcc compiling...
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Revision 1.4 2004/10/28 00:52:45 cignoni
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Better Doxygen documentation
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Revision 1.3 2004/03/09 21:26:47 cignoni
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cr lf mismatch
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Revision 1.2 2004/03/03 15:35:53 cignoni
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Yet another cr lf mismatch
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Revision 1.3 2004/02/19 15:28:01 ponchio
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*** empty log message ***
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Revision 1.2 2004/02/13 02:18:57 cignoni
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Edited Comments and GPL license
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****************************************************************************/
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#ifndef __VCGLIB_EXPORT_STL
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#define __VCGLIB_EXPORT_STL
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#include <stdio.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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This class encapsulate a filter for opening stl (sterolitograpy) meshes.
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The stl format is quite simple and rather un-flexible. It just stores, in ascii or binary the, unindexed, geometry of the faces.
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*/
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template <class SaveMeshType>
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class ExporterSTL
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{
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public:
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static int Save(SaveMeshType &m, const char * filename, const int &/*mask*/, CallBackPos *)
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{
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return Save(m,filename,true);
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}
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static int Save(SaveMeshType &m, const char * filename , bool binary =true, const char *objectname=0)
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{
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typedef typename SaveMeshType::FaceIterator FaceIterator;
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FILE *fp;
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fp = fopen(filename,"wb");
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if(fp==0)
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return 1;
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if(binary)
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{
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// Write Header
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char header[128]="VCG ";
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if(objectname) strncpy(header,objectname,80);
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fwrite(header,80,1,fp);
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// write number of facets
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fwrite(&m.fn,1,sizeof(int),fp);
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Point3f p;
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unsigned short attributes=0;
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FaceIterator fi;
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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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// For each triangle write the normal, the three coords and a short set to zero
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p.Import(vcg::NormalizedNormal(*fi));
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fwrite(p.V(),3,sizeof(float),fp);
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for(int k=0;k<3;++k){
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p.Import((*fi).V(k)->P());
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fwrite(p.V(),3,sizeof(float),fp);
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}
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fwrite(&attributes,1,sizeof(short),fp);
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}
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}
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else
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{
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if(objectname) fprintf(fp,"solid %s\n",objectname);
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else fprintf(fp,"solid vcg\n");
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Point3f p;
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FaceIterator fi;
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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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// For each triangle write the normal, the three coords and a short set to zero
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p.Import(vcg::NormalizedNormal(*fi));
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fprintf(fp," facet normal %13e %13e %13e\n",p[0],p[1],p[2]);
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fprintf(fp," outer loop\n");
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for(int k=0;k<3;++k){
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p.Import((*fi).V(k)->P());
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fprintf(fp," vertex %13e %13e %13e\n",p[0],p[1],p[2]);
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}
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fprintf(fp," endloop\n");
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fprintf(fp," endfacet\n");
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}
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fprintf(fp,"endsolid vcg\n");
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}
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fclose(fp);
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return 0;
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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> stl_error_msg;
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if(stl_error_msg.empty())
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{
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stl_error_msg.resize(2 );
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stl_error_msg[0]="No errors";
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stl_error_msg[1]="Can't open file";
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}
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if(error>1 || error<0) return "Unknown error";
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else return stl_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_FACEINDEX;
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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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#endif
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