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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. *
* *
****************************************************************************/
/* This code has been adapted from the GTS exporter and Gael's GTS exporter from Expe */
/**
@name Save in GTS format
*/
//@{
#ifndef __VCGLIB_EXPORT_GTS
#define __VCGLIB_EXPORT_GTS
#include <QFile>
#include <QTextStream>
#include <map>
#include <wrap/io_trimesh/io_mask.h>
namespace vcg {
namespace tri {
namespace io {
template <class SaveMeshType>
class ExporterGTS
{
public:
typedef typename SaveMeshType::VertexPointer VertexPointer;
typedef typename SaveMeshType::ScalarType ScalarType;
typedef typename SaveMeshType::VertexType VertexType;
typedef typename SaveMeshType::FaceType FaceType;
typedef typename SaveMeshType::FacePointer FacePointer;
typedef typename SaveMeshType::VertexIterator VertexIterator;
typedef typename SaveMeshType::FaceIterator FaceIterator;
static int Save(SaveMeshType &m, const char * filename, int /*mask*/ )
{
QFile device(filename);
if (!device.open(QFile::WriteOnly))
return 1;
QTextStream stream(&device);
// update vertex indices
std::vector<int> FlagV;
VertexPointer vp;
VertexIterator vi;
int j;
for(j=0,vi=m.vert.begin(); vi!=m.vert.end(); ++vi)
{
vp = &(*vi);
FlagV.push_back(vp->Flags());
if (!vp->IsD())
{
vp->Flags() = j;
j++;
}
}
assert(j==m.vn);
// build the edge list, and count the number of edges
typedef std::pair<int,int> Edge;
typedef std::map<Edge,int> Edge2Index;
Edge2Index edge2index;
// loop over all edge's faces
FacePointer fp;
int edgeCount = 0;
FaceIterator fi;
for (j=0,fi=m.face.begin(); fi!=m.face.end(); ++fi)
{
fp = &(*fi);
if (!fp->IsD() )
{
for (int k=0; k<3; ++k)
{
int a = fp->cV(k)->Flags();
int b = fp->cV((k+1)%3)->Flags();
if (a>b)
std::swap(a,b);
Edge e(a,b);
Edge2Index::iterator it = edge2index.find(e);
if (it==edge2index.end())
{
edge2index[e] = edgeCount;
edgeCount++;
}
}
}
}
stream << m.vn << " "
<< edgeCount << " "
<< m.fn << " "
<< "GtsSurface GtsFace GtsEdge GtsVertex\n";
// export vertices
for (vi=m.vert.begin();vi!=m.vert.end();++vi)
{
vp=&(*vi);
if (!vp->IsD())
{
stream << vp->P()[0] << " " << vp->P()[1] << " " << vp->P()[2] << "\n";
}
}
// export the edges
for (j=0,fi=m.face.begin(); fi!=m.face.end(); ++fi)
{
fp = &(*fi);
if (!fp->IsD() )
{
for (int k=0; k<3; ++k)
{
int a = fp->cV(k)->Flags();
int b = fp->cV((k+1)%3)->Flags();
if (a>b)
std::swap(a,b);
Edge e(a,b);
Edge2Index::iterator it = edge2index.find(e);
if (it!=edge2index.end())
{
stream << a+1 << " " << b+1 << "\n";
}
}
}
}
// third pass to export the face to edge connectivity
for (j=0,fi=m.face.begin(); fi!=m.face.end(); ++fi)
{
fp = &(*fi);
if (!fp->IsD() )
{
for (int k=0; k<3; ++k)
{
int a = fp->cV(k)->Flags();
int b = fp->cV((k+1)%3)->Flags();
if (a>b)
std::swap(a,b);
Edge e(a,b);
Edge2Index::iterator it = edge2index.find(e);
if (it!=edge2index.end())
stream << it->second+1 << " ";
else
return 2; // internal error
}
stream << "\n";
}
}
// Recupera i flag originali
for(j=0,vi=m.vert.begin();vi!=m.vert.end();++vi)
(*vi).Flags()=FlagV[j++];
int result = 0;
if (stream.status() != QTextStream::Ok) result = 3;
stream.flush();
return result;
}
static const char *ErrorMsg(int error)
{
static std::vector<std::string> off_error_msg;
if (off_error_msg.empty())
{
off_error_msg.resize(4);
off_error_msg[0] = "No errors";
off_error_msg[1] = "Can't open file";
off_error_msg[2] = "Internal error";
off_error_msg[3] = "Otput Stream Error";
}
if (error>3 || error<0) return "Unknown error";
else return off_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
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