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OFFReader.hh

00001 /*===========================================================================*\
00002  *                                                                           *
00003  *                               OpenMesh                                    *
00004  *      Copyright (C) 2001-2005 by Computer Graphics Group, RWTH Aachen      *
00005  *                           www.openmesh.org                                *
00006  *                                                                           *
00007  *---------------------------------------------------------------------------* 
00008  *                                                                           *
00009  *                                License                                    *
00010  *                                                                           *
00011  *  This library is free software; you can redistribute it and/or modify it  *
00012  *  under the terms of the GNU Library General Public License as published   *
00013  *  by the Free Software Foundation, version 2.                              *
00014  *                                                                           *
00015  *  This library is distributed in the hope that it will be useful, but      *
00016  *  WITHOUT ANY WARRANTY; without even the implied warranty of               *
00017  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU        *
00018  *  Library General Public License for more details.                         *
00019  *                                                                           *
00020  *  You should have received a copy of the GNU Library General Public        *
00021  *  License along with this library; if not, write to the Free Software      *
00022  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.                *
00023  *                                                                           *
00024 \*===========================================================================*/
00025 
00026 
00027 //=============================================================================
00028 //
00029 //  Implements a reader module for OFF files
00030 //
00031 //=============================================================================
00032 
00033 
00034 #ifndef __OFFREADER_HH__
00035 #define __OFFREADER_HH__
00036 
00037 
00038 //=== INCLUDES ================================================================
00039 
00040 
00041 #include <iostream>
00042 #include <string>
00043 #include <stdio.h>
00044 
00045 #include <OpenMesh/Core/System/config.hh>
00046 #include <OpenMesh/Core/Utils/SingletonT.hh>
00047 #include <OpenMesh/Core/IO/reader/BaseReader.hh>
00048 
00049 
00050 //== NAMESPACES ===============================================================
00051 
00052 
00053 namespace OpenMesh {
00054 namespace IO {
00055 
00056 
00057 //== FORWARDS =================================================================
00058 
00059 
00060 class BaseImporter;
00061 
00062 
00063 //== IMPLEMENTATION ===========================================================
00064 
00065 
00070 class _OFFReader_ : public BaseReader
00071 {
00072 public:
00073 
00074   _OFFReader_();
00075 
00076   std::string get_description() const { return "Object File Format"; }
00077   std::string get_extensions()  const { return "off"; }
00078   std::string get_magic()       const { return "OFF"; }
00079    
00080   bool read(const std::string& _filename, 
00081             BaseImporter& _bi, 
00082             Options& _opt);
00083 
00084   bool can_u_read(const std::string& _filename) const;
00085 
00086 
00087 
00088 private:
00089 
00090   bool can_u_read(std::istream& _is) const;
00091 
00092   bool read(FILE* _in, BaseImporter& _bi, Options& _opt ) const;
00093   bool read_ascii(FILE* _in, BaseImporter& _bi) const;
00094   bool read_binary(FILE* _in, BaseImporter& _bi, bool swap) const;
00095    
00097   mutable struct {
00098     unsigned vertex_dim:8; // allow up to 256 dimensional vectors
00099     unsigned vertex_has_normal:1;
00100     unsigned vertex_has_color:1;
00101     unsigned vertex_has_texcoord:1;
00102     unsigned vertex_has_hcoord:1;
00103     unsigned is_binary:1;
00104   } options_;
00105 };
00106 
00107 
00108 //== TYPE DEFINITION ==========================================================
00109 
00110 
00112 extern _OFFReader_  __OFFReaderInstance;
00113 _OFFReader_&  OFFReader();
00114 
00115 
00116 //=============================================================================
00117 } // namespace IO
00118 } // namespace OpenMesh
00119 //=============================================================================
00120 #endif
00121 //=============================================================================

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