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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 $
****************************************************************************/
#ifndef __VCGLIB_IMPORT_OFF
#define __VCGLIB_IMPORT_OFF
#include <fstream>
#include <string>
#include <vector>
#include <assert.h>
#include <vcg/space/color4.h>
namespace vcg
{
namespace tri
{
namespace io
{
// /** \addtogroup */
// /* @{ */
/**
This class encapsulate a filter for importing OFF meshes.
A basic description of the OFF file format can be found at http://www.geomview.org/docs/html/geomview_41.html
*/
template<class MESH_TYPE>
class ImporterOFF
{
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;
/*!
* 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[3] =
{
"No errors", "Can't open file", "Premature End of file",
};
if(message_code>2 || message_code<0)
return "Unknown error";
else
return error_msg[message_code];
};
/*!
* 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)
{
mesh.Clear();
bool isNormalDefined = false;
bool isColorDefined = false;
bool isTexCoordDefined = false;
int dimension = 3;
std::ifstream stream(filename);
if (stream.fail())
return OFFCodes::CantOpen;
std::vector< std::string > tokens;
TokenizeNextLine(stream, tokens);
if (tokens[tokens.size()-1].rfind('OFF')!= std::basic_string<char>::npos)
{
for (int u=tokens.size()-2; u>=0; u--)
{
std::string header = tokens[u];
if (header.compare("C")==0)
{
isColorDefined = true;
continue;
}
if (header.compare("N")==0)
{
isNormalDefined = true;
continue;
}
if (header.compare("ST")==0)
{
isTexCoordDefined = true;
continue;
}
}
if (tokens[tokens.size()-1].compare("4OFF")==0)
dimension = 4;
else if (tokens[tokens.size()-1].compare("nOFF")==0)
{
TokenizeNextLine(stream, tokens);
dimension = atoi(tokens[0].c_str());
}
else
dimension = 3;
TokenizeNextLine(stream, tokens);
}
unsigned int nVertices, nFaces, nEdges;
nVertices = atoi(tokens[0].c_str());
nFaces = atoi(tokens[1].c_str());
nEdges = atoi(tokens[2].c_str());
assert(dimension = 3);
VertexIterator v_iter = Allocator<MESH_TYPE>::AddVertices(mesh, nVertices);
for (unsigned int i=0; i<nVertices; i++, v_iter++)
{
if (stream.fail())
return OFFCodes::UnexpectedEOF;
TokenizeNextLine(stream, tokens);
for (unsigned int j=0; j<3; j++)
(*v_iter).P()[j] = (ScalarType) atof(tokens[j].c_str());
if (isNormalDefined)
for (unsigned int j=3; j<6; j++)
(*v_iter).N()[j] = (ScalarType) atof(tokens[j].c_str());
if (isColorDefined) {}
if (isTexCoordDefined) {}
}
Allocator<MESH_TYPE>::AddFaces(mesh, nFaces);
unsigned int f0=0;
for (unsigned int f=0; f<nFaces; f++)
{
f0 = f;
if (stream.fail())
return OFFCodes::UnexpectedEOF;
TokenizeNextLine(stream, tokens);
int vert_per_face = atoi(tokens[0].c_str());
if (vert_per_face == 3)
{
mesh.face[f].V(0) = &(mesh.vert[ atoi(tokens[1].c_str()) ]);
mesh.face[f].V(1) = &(mesh.vert[ atoi(tokens[2].c_str()) ]);
mesh.face[f].V(2) = &(mesh.vert[ atoi(tokens[3].c_str()) ]);
}
else
{
unsigned int trigs = vert_per_face-3;
nFaces += trigs;
Allocator<MESH_TYPE>::AddFaces(mesh, trigs);
int *vertIndices = new int[vert_per_face];
for (int k=0; k<vert_per_face; k++)
vertIndices[k] = atoi(tokens[1+k].c_str());
for (int k=0; k<=vert_per_face-3; k++)
{
mesh.face[f+k].V(0) = &(mesh.vert[ vertIndices[0 ] ]);
mesh.face[f+k].V(1) = &(mesh.vert[ vertIndices[1+k] ]);
mesh.face[f+k].V(2) = &(mesh.vert[ vertIndices[2+k] ]);
}
f+=trigs;
delete []vertIndices;
}
if (isColorDefined)
{
size_t color_elements = tokens.size()-vert_per_face-1;
switch (color_elements)
{
case 0:
{
for ( ; f0<=f; f0++)
mesh.face[f0].C().Import(vcg::Color4f(.666f, .666f, .666f, .666f));
break;
}
case 1:
{
for ( ; f0<=f; f0++)
mesh.face[f0].C().Import( ColorMap( atoi(tokens[vert_per_face+1].c_str()) ) );
break;
}
case 3:
{
if (tokens[vert_per_face+1].find('.')==-1)
{
int rgb[3];
rgb[0] = atoi( tokens[vert_per_face+1].c_str() );
rgb[1] = atoi( tokens[vert_per_face+2].c_str() );
rgb[2] = atoi( tokens[vert_per_face+3].c_str() );
for ( ; f0<=f; f0++)
mesh.face[f0].C().SetRGB(rgb[0], rgb[1], rgb[2]);
}
else
{
float color[3];
color[0] = (float) atof( tokens[vert_per_face+1].c_str() );
color[1] = (float) atof( tokens[vert_per_face+2].c_str() );
color[2] = (float) atof( tokens[vert_per_face+3].c_str() );
for ( ; f0<=f; f0++)
mesh.face[f0].C().Import(vcg::Color4f(color[0], color[1], color[2], 1.0f));
}
break;
}
case 4:
{
if (tokens[vert_per_face+1].find('.')==-1)
{
unsigned char color[4];
color[0] = (unsigned char) atoi(tokens[vert_per_face+1].c_str());
color[1] = (unsigned char) atoi(tokens[vert_per_face+2].c_str());
color[2] = (unsigned char) atoi(tokens[vert_per_face+3].c_str());
color[3] = (unsigned char) atoi(tokens[vert_per_face+4].c_str());
for ( ; f0<=f; f0++)
mesh.face[f0].C().Import(vcg::Color4f(color[0], color[1], color[2], color[3]));
}
else
{
float color[4];
color[0] = (ScalarType) atof(tokens[vert_per_face+1].c_str());
color[1] = (ScalarType) atof(tokens[vert_per_face+2].c_str());
color[2] = (ScalarType) atof(tokens[vert_per_face+3].c_str());
color[3] = (ScalarType) atof(tokens[vert_per_face+4].c_str());
for ( ; f0<=f; f0++)
mesh.face[f0].C().Import(vcg::Color4f(color[0], color[1], color[2], color[3]));
}
break;
}
} //end switch
} // end if (isColorDefined)
}
return OFFCodes::NoError;
} // end Open
protected:
enum OFFCodes {NoError, CantOpen, UnexpectedEOF};
/*!
* Read the next valid line and parses it into "tokens", allowing the tokens to be read one at a time.
* \param stream The object providing the input stream
* \param tokens The "tokens" in the next line
*/
inline static const void TokenizeNextLine(std::ifstream &stream, std::vector< std::string > &tokens)
{
std::string line;
do
std::getline(stream, line, '\n');
while (line[0] == '#' || line.length()==0);
size_t from = 0;
size_t to = 0;
size_t length = line.size();
tokens.clear();
do
{
while (line[from]==' ' && from!=length)
from++;
if(from!=length)
{
to = from+1;
while (line[to]!=' ' && to!=length)
to++;
tokens.push_back(line.substr(from, to-from).c_str());
from = to;
}
}
while (from<length);
} // end Tokenize
/*!
* Provide the int->color mapping, according to the Geomview's `cmap.fmap' file.
* \param i the color index
* \return the corresponding <CODE>vcg::Color4f</CODE> color
*/
static const vcg::Color4f ColorMap(int i)
{
static const float colorMap[148][4] =
{
{ 1.0f, 1.0f, 1.0f, 1.0f },
{ 1.0f, 1.0f, 1.0f, 1.0f },
{ 1.0f, 1.0f, 1.0f, 1.0f },
{ 1.0f, 1.0f, 1.0f, 1.0f },
{ 1.0f, 1.0f, 1.0f, 1.0f },
{ 1.0f, 1.0f, 1.0f, 1.0f },
{ 0.7f, 0.7f, 0.7f, 0.7f },
{ 0.2f, 0.2f, 0.2f, 0.2f },
{ 0.9f, 0.9f, 0.9f, 0.9f },
{ 0.1f, 0.1f, 0.1f, 0.1f },
{ 0.1f, 0.1f, 0.1f, 0.1f },
{ 0.8f, 0.8f, 0.8f, 0.8f },
{ 0.7f, 0.7f, 0.7f, 0.7f },
{ 0.7f, 0.7f, 0.7f, 0.7f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.9f, 0.9f, 0.9f, 0.9f },
{ 0.2f, 0.2f, 0.2f, 0.2f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.75f, 0.75f, 0.75f, 0.75f },
{ 0.8f, 0.8f, 0.8f, 0.8f },
{ 0.8f, 0.8f, 0.8f, 0.8f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.4f, 0.4f, 0.4f, 0.4f },
{ 0.4f, 0.4f, 0.4f, 0.4f },
{ 0.8f, 0.8f, 0.8f, 0.8f },
{ 0.8f, 0.8f, 0.8f, 0.8f },
{ 0.7f, 0.7f, 0.7f, 0.7f },
{ 0.7f, 0.7f, 0.7f, 0.7f },
{ 0.7f, 0.7f, 0.7f, 0.7f },
{ 0.7f, 0.7f, 0.7f, 0.7f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.9f, 0.9f, 0.9f, 0.9f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.75f, 0.75f, 0.75f, 0.75f },
{ 0.8f, 0.8f, 0.8f, 0.8f },
{ 0.4f, 0.4f, 0.4f, 0.4f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.4f, 0.4f, 0.4f, 0.4f },
{ 0.8f, 0.8f, 0.8f, 0.8f },
{ 0.7f, 0.7f, 0.7f, 0.7f },
{ 0.7f, 0.7f, 0.7f, 0.7f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.9f, 0.9f, 0.9f, 0.9f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.75f, 0.75f, 0.75f, 0.75f },
{ 0.8f, 0.8f, 0.8f, 0.8f },
{ 0.4f, 0.4f, 0.4f, 0.4f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.4f, 0.4f, 0.4f, 0.4f },
{ 0.8f, 0.8f, 0.8f, 0.8f },
{ 0.7f, 0.7f, 0.7f, 0.7f },
{ 0.7f, 0.7f, 0.7f, 0.7f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.9f, 0.9f, 0.9f, 0.9f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.75f, 0.75f, 0.75f, 0.75f },
{ 0.8f, 0.8f, 0.8f, 0.8f },
{ 0.4f, 0.4f, 0.4f, 0.4f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.4f, 0.4f, 0.4f, 0.4f },
{ 0.8f, 0.8f, 0.8f, 0.8f },
{ 1.0f, 1.0f, 1.0f, 1.0f },
{ 1.0f, 1.0f, 1.0f, 1.0f },
{ 1.0f, 1.0f, 1.0f, 1.0f },
{ 1.0f, 1.0f, 1.0f, 1.0f },
{ 1.0f, 1.0f, 1.0f, 1.0f },
{ 1.0f, 1.0f, 1.0f, 1.0f },
{ 0.05f, 0.05f, 0.05f, 0.05f },
{ 0.7f, 0.7f, 0.7f, 0.7f },
{ 0.2f, 0.2f, 0.2f, 0.2f },
{ 0.9f, 0.9f, 0.9f, 0.9f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.1f, 0.1f, 0.1f, 0.1f },
{ 0.8f, 0.8f, 0.8f, 0.8f },
{ 0.7f, 0.7f, 0.7f, 0.7f },
{ 0.7f, 0.7f, 0.7f, 0.7f },
{ 0.7f, 0.7f, 0.7f, 0.7f },
{ 0.7f, 0.7f, 0.7f, 0.7f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.9f, 0.9f, 0.9f, 0.9f },
{ 0.9f, 0.9f, 0.9f, 0.9f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.75f, 0.75f, 0.75f, 0.75f },
{ 0.75f, 0.75f, 0.75f, 0.75f },
{ 0.8f, 0.8f, 0.8f, 0.8f },
{ 0.8f, 0.8f, 0.8f, 0.8f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.4f, 0.4f, 0.4f, 0.4f },
{ 0.4f, 0.4f, 0.4f, 0.4f },
{ 0.8f, 0.8f, 0.8f, 0.8f },
{ 0.8f, 0.8f, 0.8f, 0.8f },
{ 0.7f, 0.7f, 0.7f, 0.7f },
{ 0.7f, 0.7f, 0.7f, 0.7f },
{ 0.7f, 0.7f, 0.7f, 0.7f },
{ 0.7f, 0.7f, 0.7f, 0.7f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.9f, 0.9f, 0.9f, 0.9f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.75f, 0.75f, 0.75f, 0.75f },
{ 0.8f, 0.8f, 0.8f, 0.8f },
{ 0.4f, 0.4f, 0.4f, 0.4f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.4f, 0.4f, 0.4f, 0.4f },
{ 0.8f, 0.8f, 0.8f, 0.8f },
{ 0.7f, 0.7f, 0.7f, 0.7f },
{ 0.7f, 0.7f, 0.7f, 0.7f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.9f, 0.9f, 0.9f, 0.9f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.75f, 0.75f, 0.75f, 0.75f },
{ 0.8f, 0.8f, 0.8f, 0.8f },
{ 0.4f, 0.4f, 0.4f, 0.4f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.4f, 0.4f, 0.4f, 0.4f },
{ 0.8f, 0.8f, 0.8f, 0.8f },
{ 0.7f, 0.7f, 0.7f, 0.7f },
{ 0.7f, 0.7f, 0.7f, 0.7f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.9f, 0.9f, 0.9f, 0.9f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.75f, 0.75f, 0.75f, 0.75f },
{ 0.8f, 0.8f, 0.8f, 0.8f },
{ 0.4f, 0.4f, 0.4f, 0.4f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.4f, 0.4f, 0.4f, 0.4f },
{ 0.8f, 0.8f, 0.8f, 0.8f }
};
return Color4f(colorMap[i][0], colorMap[i][1], colorMap[i][2], colorMap[i][3]);
}
};
// /*! @} */
}; //namespace io
};//namespace tri
}; // namespace vcg
#endif //__VCGLIB_IMPORT_OFF
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