export_stl.h

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* VCGLib                                                            o o     *
* Visual and Computer Graphics Library                            o     o   *
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* Copyright(C) 2004                                                \/)\/    *
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/****************************************************************************
  History

$Log: not supported by cvs2svn $
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

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

Revision 1.3  2004/03/09 21:26:47  cignoni
cr lf mismatch

Revision 1.2  2004/03/03 15:35:53  cignoni
Yet another cr lf mismatch

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 {

template <class SaveMeshType>
class ExporterSTL
{
public:    
typedef typename SaveMeshType::FaceType FaceType;
typedef unsigned short CallBackSTLFaceAttribute(const SaveMeshType &m, const FaceType &f);

static int Save(SaveMeshType &m, const char * filename, const int &/*mask*/, CallBackPos *)
{
 return Save(m,filename,true);
}

static int Save(SaveMeshType &m, const char * filename , bool binary =true, const char *objectname=0, CallBackSTLFaceAttribute *faceAttributeCallback = NULL)
{
  typedef typename SaveMeshType::FaceIterator FaceIterator;
        FILE *fp;

        fp = fopen(filename,"wb");
        if(fp==0)
                return 1;

        if(binary)
        {
                // Write Header
                char header[128]="VCG                                                                                                  ";
                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
                        p.Import(vcg::NormalizedNormal(*fi));
                        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);                
                        }
                        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
                        p.Import(vcg::NormalizedNormal(*fi));
                        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;
}
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();
};

/*
        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;
}


}; // end class

} // end Namespace tri
} // end Namespace io
} // end Namespace vcg



#endif

---

vcglib
Author(s): Christian Bersch
autogenerated on Fri Jan 11 09:17:07 2013