vcglib/wrap/io_trimesh/export_stl.h

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/****************************************************************************
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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 $
2006-11-30 23:49:32 +01:00
Revision 1.8 2006/09/18 08:55:33 cignoni
Corrected return value of save function (zero is no error)
Revision 1.7 2006/01/30 13:43:59 cignoni
Added GetExportMaskCapability
2006-01-30 14:43:59 +01:00
Revision 1.6 2006/01/13 15:47:43 cignoni
Uniformed return type to the style of Open. Now every export function returns 0 in case of success.
Revision 1.5 2005/12/01 00:58:56 cignoni
Added and removed typenames for gcc compiling...
Revision 1.4 2004/10/28 00:52:45 cignoni
Better Doxygen documentation
2004-10-28 02:56:44 +02:00
Revision 1.3 2004/03/09 21:26:47 cignoni
cr lf mismatch
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Revision 1.2 2004/03/03 15:35:53 cignoni
Yet another cr lf mismatch
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Revision 1.3 2004/02/19 15:28:01 ponchio
*** empty log message ***
Revision 1.2 2004/02/13 02:18:57 cignoni
Edited Comments and GPL license
****************************************************************************/
#ifndef __VCGLIB_EXPORT_STL
#define __VCGLIB_EXPORT_STL
#include <stdio.h>
namespace vcg {
namespace tri {
namespace io {
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/**
This class encapsulate a filter for opening stl (sterolitograpy) meshes.
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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template <class SaveMeshType>
class ExporterSTL
{
public:
typedef typename SaveMeshType::FaceType FaceType;
typedef unsigned short CallBackSTLFaceAttribute(const SaveMeshType &m, const FaceType &f);
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static int Save(SaveMeshType &m, const char * filename, const int &/*mask*/, CallBackPos *)
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{
return Save(m,filename,true);
}
static int Save(SaveMeshType &m, const char * filename , bool binary =true, const char *objectname=0, CallBackSTLFaceAttribute *faceAttributeCallback = NULL)
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{
typedef typename SaveMeshType::FaceIterator FaceIterator;
FILE *fp;
fp = fopen(filename,"wb");
if(fp==0)
return 1;
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if(binary)
{
// Write Header
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char header[128]="VCG ";
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if(objectname) strncpy(header,objectname,80);
fwrite(header,80,1,fp);
// write number of facets
fwrite(&m.fn,1,sizeof(int),fp);
Point3f p;
unsigned short attributes=0;
FaceIterator fi;
for(fi=m.face.begin(); fi!=m.face.end(); ++fi) if( !(*fi).IsD() )
{
// 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);
for(int k=0;k<3;++k){
p.Import((*fi).V(k)->P());
fwrite(p.V(),3,sizeof(float),fp);
}
if (faceAttributeCallback != NULL) {
attributes = (*faceAttributeCallback)(m, *fi);
}
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fwrite(&attributes,1,sizeof(short),fp);
}
}
else
{
if(objectname) fprintf(fp,"solid %s\n",objectname);
else fprintf(fp,"solid vcg\n");
Point3f p;
FaceIterator fi;
for(fi=m.face.begin(); fi!=m.face.end(); ++fi) if( !(*fi).IsD() )
{
// 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]);
fprintf(fp," outer loop\n");
for(int k=0;k<3;++k){
p.Import((*fi).V(k)->P());
fprintf(fp," vertex %13e %13e %13e\n",p[0],p[1],p[2]);
}
fprintf(fp," endloop\n");
fprintf(fp," endfacet\n");
}
fprintf(fp,"endsolid vcg\n");
}
fclose(fp);
return 0;
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}
static const char *ErrorMsg(int error)
{
static std::vector<std::string> stl_error_msg;
if(stl_error_msg.empty())
{
stl_error_msg.resize(2 );
stl_error_msg[0]="No errors";
stl_error_msg[1]="Can't open file";
}
if(error>1 || error<0) return "Unknown error";
else return stl_error_msg[error].c_str();
};
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/*
returns mask of capability one define with what are the saveable information of the format.
*/
static int GetExportMaskCapability()
{
int capability = 0;
capability |= vcg::tri::io::Mask::IOM_VERTCOORD;
capability |= vcg::tri::io::Mask::IOM_FACEINDEX;
return capability;
}
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}; // end class
} // end Namespace tri
} // end Namespace io
} // end Namespace vcg
#endif