vcglib/wrap/io_trimesh/import.h

115 lines
3.8 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. *
* *
****************************************************************************/
/****************************************************************************
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****************************************************************************/
#ifndef __VCGLIB_IMPORT
#define __VCGLIB_IMPORT
#include <wrap/io_trimesh/import_ply.h>
#include <wrap/io_trimesh/import_stl.h>
#include <wrap/io_trimesh/import_off.h>
#include <locale>
namespace vcg {
namespace tri {
namespace io {
/**
This class encapsulate a filter for automatically importing meshes by guessing
the right filter according to the extension
*/
template <class OpenMeshType>
class Importer
{
private:
enum KnownTypes { KT_UNKNOWN, KT_PLY, KT_STL, KT_OFF };
static int &LastType()
{
static int lastType= KT_UNKNOWN;
return lastType;
}
public:
// simple aux function that returns true if a given file has a given extesnion
static bool FileExtension(string filename, string extension)
{
locale loc1 ;
use_facet<ctype<char> > ( loc1 ).tolower(&*filename.begin(),&*filename.end());
use_facet<ctype<char> > ( loc1 ).tolower(&*extension.begin(),&*extension.end());
string end=filename.substr(filename.length()-extension.length(),extension.length());
return end==extension;
}
// Open Mesh
static int Open(OpenMeshType &m, const char *filename, CallBackPos *cb=0)
{
int err;
if(FileExtension(filename,"ply"))
{
err = ImporterPLY<OpenMeshType>::Open(m,filename);
LastType()=KT_PLY;
}
else if(FileExtension(filename,"stl"))
{
err = ImporterSTL<OpenMeshType>::Open(m,filename);
LastType()=KT_STL;
}
else if(FileExtension(filename,"off"))
{
err = ImporterOFF<OpenMeshType>::Open(m,filename);
LastType()=KT_OFF;
}
else {
err=1;
LastType()=KT_UNKNOWN;
}
return err;
}
static const char *ErrorMsg(int error)
{
switch(LastType())
{
case KT_PLY : return ImporterPLY<OpenMeshType>::ErrorMsg(error); break;
case KT_STL : return ImporterSTL<OpenMeshType>::ErrorMsg(error); break;
case KT_OFF : return ImporterOFF<OpenMeshType>::ErrorMsg(error); break;
}
return "Unknown type";
}
}; // end class
} // end Namespace tri
} // end Namespace io
} // end Namespace vcg
#endif