b6632e0754
git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@84 fdac6126-5c0c-442c-9429-916003d36597
154 lines
5.2 KiB
C++
154 lines
5.2 KiB
C++
/*===========================================================================*\
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* *
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* OpenMesh *
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* Copyright (C) 2003 by Computer Graphics Group, RWTH Aachen *
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* www.openmesh.org *
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* *
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*---------------------------------------------------------------------------*
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* *
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* License *
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* *
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* This library is free software; you can redistribute it and/or modify it *
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* under the terms of the GNU Lesser General Public License as published *
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* by the Free Software Foundation, version 2.1. *
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* *
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* This library is distributed in the hope that it will be useful, but *
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* WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
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* Lesser General Public License for more details. *
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* *
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* You should have received a copy of the GNU Lesser General Public *
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* License along with this library; if not, write to the Free Software *
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. *
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* *
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\*===========================================================================*/
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//=============================================================================
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//
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// Implements a reader module for OFF files
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//
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//=============================================================================
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#ifndef __OFFREADER_HH__
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#define __OFFREADER_HH__
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//=== INCLUDES ================================================================
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#include <iostream>
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#include <string>
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#include <stdio.h>
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#include <fstream>
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#include <OpenMesh/Core/System/config.h>
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#include <OpenMesh/Core/Utils/SingletonT.hh>
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#include <OpenMesh/Core/IO/reader/BaseReader.hh>
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#ifndef WIN32
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#include <string.h>
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#endif
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//== NAMESPACES ===============================================================
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namespace OpenMesh {
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namespace IO {
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//== FORWARDS =================================================================
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class BaseImporter;
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//== IMPLEMENTATION ===========================================================
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/**
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Implementation of the OFF format reader. This class is singleton'ed by
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SingletonT to OFFReader.
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By passing Options to the read function you can manipulate the reading behavoir.
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The following options can be set:
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VertexNormal
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VertexColor
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VertexTexCoord
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FaceColor
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ColorAlpha [only when reading binary]
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These options define if the corresponding data should be read (if available)
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or if it should be omitted.
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After execution of the read function. The options object contains information about
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what was actually read.
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e.g. if VertexNormal was true when the read function was called, but the file
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did not contain vertex normals then it is false afterwards.
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When reading a binary off with Color Flag in the header it is assumed that all vertices
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and faces have colors in the format "int int int".
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If ColorAlpha is set the format "int int int int" is assumed.
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*/
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class _OFFReader_ : public BaseReader
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{
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public:
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_OFFReader_();
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/// Destructor
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virtual ~_OFFReader_() {};
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std::string get_description() const { return "Object File Format"; }
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std::string get_extensions() const { return "off"; }
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std::string get_magic() const { return "OFF"; }
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bool read(const std::string& _filename,
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BaseImporter& _bi,
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Options& _opt);
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bool can_u_read(const std::string& _filename) const;
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private:
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bool can_u_read(std::istream& _is) const;
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bool read(std::fstream& _in, BaseImporter& _bi, Options& _opt ) const;
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bool read_ascii(std::fstream& _in, BaseImporter& _bi) const;
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bool read_binary(std::fstream& _in, BaseImporter& _bi, bool swap) const;
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void readValue(std::fstream& _in, float& _value) const;
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void readValue(std::fstream& _in, int& _value) const;
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void readValue(std::fstream& _in, unsigned int& _value) const;
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int getColorType(std::string & _line, bool _texCoordsAvailable) const;
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//available options for reading
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mutable Options options_;
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//options that the user wants to read
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mutable Options userOptions_;
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};
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//== TYPE DEFINITION ==========================================================
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/// Declare the single entity of the OFF reader
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extern _OFFReader_ __OFFReaderInstance;
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_OFFReader_& OFFReader();
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//=============================================================================
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} // namespace IO
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} // namespace OpenMesh
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//=============================================================================
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#endif
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//=============================================================================
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