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vcglib/wrap/io_trimesh/export_dxf.h

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/****************************************************************************
* VCGLib o o *
* Visual and Computer Graphics Library o o *
* _ O _ *
* Copyright(C) 2004-2016 \/)\/ *
* 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. *
* *
****************************************************************************/
/****************************************************************************
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****************************************************************************/
#ifndef __VCGLIB_EXPORT_DXF
#define __VCGLIB_EXPORT_DXF
namespace vcg {
namespace tri {
namespace io {
template <class SaveMeshType>
/**
This class encapsulate a filter for save dxf meshes.
*/
class ExporterDXF
{
typedef typename SaveMeshType::CoordType CoordType;
public:
///Standard call for saving a mesh
static int Save(SaveMeshType &m, const char * filename)
{
if(m.fn==0 && m.en != 0) return SaveEdge(m,filename);
FILE * o = fopen(filename,"w");
if(o==NULL) return 1;
writeHeader(o, m);
fprintf(o,"0\n");
fprintf(o,"SECTION\n");
fprintf(o,"2\n");
fprintf(o,"ENTITIES\n");
typename SaveMeshType::FaceIterator fi;
for(fi=m.face.begin(); fi!=m.face.end(); ++fi)
{
if (!fi->IsD())
{
typename SaveMeshType::CoordType v0 = (*fi).V(0)->P();
typename SaveMeshType::CoordType v1 = (*fi).V(1)->P();
typename SaveMeshType::CoordType v2 = (*fi).V(2)->P();
fprintf(o,"0\n"); fprintf(o,"3DFACE\n"); fprintf(o,"8\n"); fprintf(o,"0\n");
fprintf(o,"10\n"); fprintf(o,"%f\n", v0[0]); //X
fprintf(o,"20\n"); fprintf(o,"%f\n", v0[1]); //Y
fprintf(o,"30\n"); fprintf(o,"%f\n", v0[2]); //Z
fprintf(o,"11\n"); fprintf(o,"%f\n", v1[0]); //X
fprintf(o,"21\n"); fprintf(o,"%f\n", v1[1]); //Y
fprintf(o,"31\n"); fprintf(o,"%f\n", v1[2]); //Z
fprintf(o,"12\n"); fprintf(o,"%f\n", v2[0]); //X
fprintf(o,"22\n"); fprintf(o,"%f\n", v2[1]); //Y
fprintf(o,"32\n"); fprintf(o,"%f\n", v2[2]); //Z
fprintf(o,"13\n"); fprintf(o,"%f\n", v2[0]); //X
fprintf(o,"23\n"); fprintf(o,"%f\n", v2[1]); //Y
fprintf(o,"33\n"); fprintf(o,"%f\n", v2[2]); //Z
}
}
fprintf(o,"0\n");
fprintf(o,"ENDSEC\n");
fprintf(o,"0\n");
fprintf(o,"EOF\n");
int result = 0;
if (ferror(o)) result = 2;
fclose(o);
return result;
}
/// Standard call for knowing the meaning of an error code
static const char *ErrorMsg(int error)
{
static std::vector<std::string> dxf_error_msg;
if (dxf_error_msg.empty())
{
dxf_error_msg.resize(3);
dxf_error_msg[0] = "No errors";
dxf_error_msg[1] = "Can't open file";
dxf_error_msg[2] = "Output Stream Error";
}
if (error>2 || error<0) return "Unknown error";
else return dxf_error_msg[error].c_str();
}
static bool SaveEdge(SaveMeshType &m, const char * filename)
{
FILE * o = fopen(filename,"w");
if(o==NULL) return 1;
writeHeader(o, m);
fprintf(o,"0\n");
fprintf(o,"SECTION\n");
fprintf(o,"2\n");
fprintf(o,"ENTITIES\n");
typename SaveMeshType::EdgeIterator ei;
for(ei=m.edge.begin(); ei!=m.edge.end();++ei)
{
CoordType p1 = (*ei).V(0)->P();
CoordType p2 = (*ei).V(1)->P();
fprintf(o,"0\n");
fprintf(o,"LINE\n");
fprintf(o,"8\n");
fprintf(o,"0\n");
fprintf(o,"10\n");
fprintf(o,"%f\n", p1[0]); //X
fprintf(o,"20\n");
fprintf(o,"%f\n", p1[1]); //Y
fprintf(o,"30\n");
fprintf(o,"%f\n", p1[2]); //Z
fprintf(o,"11\n");
fprintf(o,"%f\n", p2[0]); //X
fprintf(o,"21\n");
fprintf(o,"%f\n", p2[1]); //Y
fprintf(o,"31\n");
fprintf(o,"%f\n", p2[2]); //Z
}
fprintf(o,"0\n");
fprintf(o,"ENDSEC\n");
fprintf(o,"0\n");
fprintf(o,"EOF\n");
fclose(o);
return true;
}
static bool writeHeader(FILE* o, SaveMeshType &mp)
{
// standard DXF header
// most of data is meaningless, but required by a lot of importers
fprintf(o, "999\n");
fprintf(o, "DXF created by VCGLib\n");
fprintf(o, "0\n");
fprintf(o, "SECTION\n");
fprintf(o, "2\n");
fprintf(o, "HEADER\n");
// Version of the dxf specs, most reader need version 12 or above (AC1009)
fprintf(o, "9\n");
fprintf(o, "$ACADVER\n");
fprintf(o, "1\n");
fprintf(o, "AC1009\n");
// Insertion base set by BASE command (in WCS)
fprintf(o, "9\n");
fprintf(o, "$INSBASE\n");
fprintf(o, "10\n");
fprintf(o, "0.0\n");
fprintf(o, "20\n");
fprintf(o, "0.0\n");
fprintf(o, "30\n");
fprintf(o, "0.0\n");
// extents for draw space and line drawing...
// I will just use the data from the boundingbox (largest bbox value in all directions)
double emin = std::min(mp.bbox.min[0], std::min(mp.bbox.min[1], mp.bbox.min[2]));
double emax = std::max(mp.bbox.max[0], std::max(mp.bbox.max[1], mp.bbox.max[2]));
fprintf(o, "9\n");
fprintf(o, "$EXTMIN\n");
fprintf(o, "10\n");
fprintf(o, "%f\n",emin);
fprintf(o, "20\n");
fprintf(o, "%f\n",emin);
fprintf(o, "9\n");
fprintf(o, "$EXTMAX\n");
fprintf(o, "10\n");
fprintf(o, "%f\n", emax);
fprintf(o, "20\n");
fprintf(o, "%f\n", emax);
fprintf(o, "9\n");
fprintf(o, "$LINMIN\n");
fprintf(o, "10\n");
fprintf(o, "%f\n", emin);
fprintf(o, "20\n");
fprintf(o, "%f\n", emin);
fprintf(o, "9\n");
fprintf(o, "$LINMAX\n");
fprintf(o, "10\n");
fprintf(o, "%f\n", emax);
fprintf(o, "20\n");
fprintf(o, "%f\n", emax);
fprintf(o, "0\n");
fprintf(o, "ENDSEC\n");
return true;
}
}; // end class
} // end Namespace io
} // end Namespace tri
} // end Namespace vcg
#endif
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