302 lines
8.6 KiB
C++
302 lines
8.6 KiB
C++
/****************************************************************************
|
|
* 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. *
|
|
* *
|
|
****************************************************************************/
|
|
|
|
/* This code has been adapted from the OFF importer and Gael's GTS loader from Expe */
|
|
|
|
#ifndef __VCGLIB_IMPORT_GTS
|
|
#define __VCGLIB_IMPORT_GTS
|
|
|
|
#include <fstream>
|
|
#include <string>
|
|
#include <vector>
|
|
#include <assert.h>
|
|
#include <vcg/space/color4.h>
|
|
#include <wrap/callback.h>
|
|
#include <wrap/io_trimesh/io_mask.h>
|
|
|
|
namespace vcg
|
|
{
|
|
namespace tri
|
|
{
|
|
namespace io
|
|
{
|
|
// /** \addtogroup */
|
|
// /* @{ */
|
|
/**
|
|
This class encapsulate a filter for importing GTS meshes.
|
|
The GTS file format of the GNU Triangulated Surface library http://gts.sourceforge.net/
|
|
*/
|
|
template<class MESH_TYPE>
|
|
class ImporterGTS
|
|
{
|
|
public:
|
|
|
|
typedef typename MESH_TYPE::VertexType VertexType;
|
|
typedef typename MESH_TYPE::VertexIterator VertexIterator;
|
|
typedef typename MESH_TYPE::VertexPointer VertexPointer;
|
|
typedef typename MESH_TYPE::FaceType FaceType;
|
|
typedef typename MESH_TYPE::FaceIterator FaceIterator;
|
|
typedef typename MESH_TYPE::FacePointer FacePointer;
|
|
typedef typename MESH_TYPE::CoordType CoordType;
|
|
typedef typename MESH_TYPE::ScalarType ScalarType;
|
|
|
|
enum GTSCodes {NoError=0, CantOpen, InvalidFile,
|
|
UnsupportedFormat, ErrorNotTriangularFace};
|
|
|
|
struct Options
|
|
{
|
|
Options()
|
|
: onlyMaskFlag(false), onlyPoints(false), flipFaces(false)
|
|
{}
|
|
bool onlyMaskFlag;
|
|
bool onlyPoints;
|
|
bool flipFaces;
|
|
};
|
|
|
|
/*!
|
|
* Standard call for knowing the meaning of an error code
|
|
* \param message_code The code returned by <CODE>Open</CODE>
|
|
* \return The string describing the error code
|
|
*/
|
|
static const char* ErrorMsg(int message_code)
|
|
{
|
|
static const char* error_msg[] =
|
|
{
|
|
"No errors", "Can't open file", "Invalid file",
|
|
"Unsupported format", "Face with more than 3 vertices"
|
|
};
|
|
|
|
if(message_code>4 || message_code<0)
|
|
return "Unknown error";
|
|
else
|
|
return error_msg[message_code];
|
|
};
|
|
|
|
/**
|
|
* Load only the properties of the 3D objects.
|
|
*
|
|
* \param filename the name of the file to read from
|
|
* \param loadmask the mask which encodes the properties
|
|
* \return the operation result
|
|
*/
|
|
static bool LoadMask(const char *filename, int &loadmask)
|
|
{
|
|
// To obtain the loading mask all the file must be parsed
|
|
// to distinguish between per-vertex and per-face color attribute.
|
|
loadmask=0;
|
|
MESH_TYPE dummyMesh;
|
|
return (Open(dummyMesh, filename, loadmask,0,true)==NoError);
|
|
}
|
|
|
|
static int Open(MESH_TYPE &mesh, const char *filename, CallBackPos *cb=0)
|
|
{
|
|
int loadmask;
|
|
return Open(mesh,filename,loadmask,cb);
|
|
}
|
|
|
|
/*!
|
|
* Standard call for reading a mesh.
|
|
*
|
|
* \param mesh the destination mesh
|
|
* \param filename the name of the file to read from
|
|
* \return the operation result
|
|
*/
|
|
static int Open(MESH_TYPE &mesh, const char *filename, int &loadmask,
|
|
CallBackPos *cb=0, bool onlyMaskFlag=false)
|
|
{
|
|
Options opt;
|
|
opt.onlyMaskFlag = onlyMaskFlag;
|
|
return Open(mesh, filename, loadmask, opt, cb);
|
|
}
|
|
|
|
static int Open(MESH_TYPE &mesh, const char *filename, int &loadmask,
|
|
const Options& options, CallBackPos *cb=0)
|
|
{
|
|
QFile device(filename);
|
|
if ( (!device.open(QFile::ReadOnly)) )
|
|
return CantOpen;
|
|
|
|
QTextStream stream(&device);
|
|
|
|
loadmask = Mask::IOM_VERTCOORD | Mask::IOM_FACEINDEX;
|
|
|
|
int nofVertices, nofFaces, nofEdges;
|
|
int id0, id1, id2;
|
|
int eid0, eid1, eid2;
|
|
Point3f v;
|
|
|
|
QString line;
|
|
QStringList sa;
|
|
bool done = false;
|
|
do
|
|
{
|
|
line = stream.readLine();
|
|
line = line.trimmed();
|
|
sa = line.split(' ');
|
|
if ((!line.startsWith("#")) && (sa.size()>=3))
|
|
{
|
|
nofVertices = sa[0].toInt();
|
|
nofEdges = sa[1].toInt();
|
|
nofFaces = sa[2].toInt();
|
|
done = true;
|
|
}
|
|
} while (!done);
|
|
|
|
if(options.onlyMaskFlag) return NoError;
|
|
|
|
int total = nofVertices + nofEdges + nofFaces;
|
|
|
|
std::cerr << "GtsMeshReader::nofVertices = " << nofVertices << std::endl;
|
|
std::cerr << "GtsMeshReader::nofEdges = " << nofEdges << std::endl;
|
|
std::cerr << "GtsMeshReader::nofFaces = " << nofFaces << std::endl;
|
|
|
|
mesh.Clear();
|
|
VertexIterator v_iter = Allocator<MESH_TYPE>::AddVertices(mesh, nofVertices);
|
|
for(int i=0 ; i<nofVertices ;)
|
|
{
|
|
if (cb && (i%1000)==0)
|
|
cb(i/total, "Vertex Loading");
|
|
|
|
line = stream.readLine().trimmed();
|
|
|
|
if (line.startsWith("#"))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
sa = line.split(' ');
|
|
if (!sa.size()>=3)
|
|
{
|
|
std::cerr << "Error parsing vertex " << line.toLocal8Bit().data() << "\n";
|
|
return InvalidFile;
|
|
}
|
|
v.X() = sa[0].toDouble();
|
|
v.Y() = sa[1].toDouble();
|
|
v.Z() = sa[2].toDouble();
|
|
|
|
(*v_iter).P() = v;
|
|
++v_iter;
|
|
i++;
|
|
}
|
|
|
|
// load edges
|
|
std::vector< std::pair<int,int> > edges;
|
|
for(int i=0 ; i<nofEdges ; ++i)
|
|
{
|
|
if (cb && (i%1000)==0)
|
|
cb((i+nofVertices)/total, "Edge Loading");
|
|
|
|
line = stream.readLine();
|
|
if (line.startsWith("#"))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
sa = line.split(' ');
|
|
if (!sa.size()>=2)
|
|
{
|
|
std::cerr << "Error parsing edge " << line.toLocal8Bit().data() << "\n";
|
|
return InvalidFile;
|
|
}
|
|
id0 = sa[0].toInt();
|
|
id1 = sa[1].toInt();
|
|
|
|
edges.push_back(std::pair<int,int>(id0-1,id1-1));
|
|
}
|
|
|
|
// load faces
|
|
Allocator<MESH_TYPE>::AddFaces(mesh, nofFaces);
|
|
for(int i=0 ; i<nofFaces ; )
|
|
{
|
|
if (cb && (i%1000)==0)
|
|
cb((nofVertices+nofEdges+i)/total, "Face Loading");
|
|
|
|
line = stream.readLine();
|
|
if (line.startsWith("#"))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
sa = line.split(' ');
|
|
if (!sa.size()>=3)
|
|
{
|
|
std::cerr << "Error parsing face " << line.toLocal8Bit().data() << "\n";
|
|
return InvalidFile;
|
|
}
|
|
eid0 = sa[0].toInt();
|
|
eid1 = sa[1].toInt();
|
|
eid2 = sa[2].toInt();
|
|
|
|
int e11 = edges[eid0-1].first;
|
|
int e12 = edges[eid0-1].second;
|
|
int e21 = edges[eid1-1].first;
|
|
int e22 = edges[eid1-1].second;
|
|
if (e12 == e21) {
|
|
id0 = e11;
|
|
id1 = e12;
|
|
id2 = e22;
|
|
}
|
|
else if (e12 == e22) {
|
|
id0 = e11;
|
|
id1 = e12;
|
|
id2 = e21;
|
|
}
|
|
else if (e11 == e21) {
|
|
id0 = e12;
|
|
id1 = e11;
|
|
id2 = e22;
|
|
}
|
|
else {
|
|
id0 = e12;
|
|
id1 = e11;
|
|
id2 = e21;
|
|
}
|
|
|
|
if (options.flipFaces)
|
|
{
|
|
mesh.face[i].V(0) = &(mesh.vert[id0]);
|
|
mesh.face[i].V(1) = &(mesh.vert[id2]);
|
|
mesh.face[i].V(2) = &(mesh.vert[id1]);
|
|
}
|
|
else
|
|
{
|
|
mesh.face[i].V(0) = &(mesh.vert[id0]);
|
|
mesh.face[i].V(1) = &(mesh.vert[id1]);
|
|
mesh.face[i].V(2) = &(mesh.vert[id2]);
|
|
}
|
|
|
|
++i;
|
|
}
|
|
return NoError;
|
|
} // end Open
|
|
|
|
protected:
|
|
|
|
};
|
|
// /*! @} */
|
|
} //namespace io
|
|
}//namespace tri
|
|
} // namespace vcg
|
|
|
|
#endif //__VCGLIB_IMPORT_GTS
|