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OMReader.hh
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35 /*===========================================================================*\
36  * *
37  * $Revision: 990 $ *
38  * $Date: 2014-02-05 10:01:07 +0100 (Mi, 05 Feb 2014) $ *
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40 \*===========================================================================*/
41 
42 
43 //=============================================================================
44 //
45 // Implements a reader module for OFF files
46 //
47 //=============================================================================
48 
49 
50 #ifndef __OMREADER_HH__
51 #define __OMREADER_HH__
52 
53 
54 //=== INCLUDES ================================================================
55 
56 // OpenMesh
57 #include <OpenMesh/Core/System/config.h>
58 #include <OpenMesh/Core/Utils/SingletonT.hh>
59 #include <OpenMesh/Core/IO/OMFormat.hh>
60 #include <OpenMesh/Core/IO/IOManager.hh>
61 #include <OpenMesh/Core/IO/importer/BaseImporter.hh>
62 #include <OpenMesh/Core/IO/reader/BaseReader.hh>
63 
64 // STD C++
65 #include <iostream>
66 #include <string>
67 
68 
69 //== NAMESPACES ===============================================================
70 
71 
72 namespace OpenMesh {
73 namespace IO {
74 
75 
76 //== IMPLEMENTATION ===========================================================
77 
78 
83 class OPENMESHDLLEXPORT _OMReader_ : public BaseReader
84 {
85 public:
86 
87  _OMReader_();
88  virtual ~_OMReader_() { }
89 
90  std::string get_description() const { return "OpenMesh File Format"; }
91  std::string get_extensions() const { return "om"; }
92  std::string get_magic() const { return "OM"; }
93 
94  bool read(const std::string& _filename,
95  BaseImporter& _bi,
96  Options& _opt );
97 
99  bool read(std::istream& _is,
100  BaseImporter& _bi,
101  Options& _opt );
102 
103  virtual bool can_u_read(const std::string& _filename) const;
104  virtual bool can_u_read(std::istream& _is) const;
105 
106 
107 private:
108 
109  bool supports( const OMFormat::uint8 version ) const;
110 
111  bool read_ascii(std::istream& _is, BaseImporter& _bi, Options& _opt) const;
112  bool read_binary(std::istream& _is, BaseImporter& _bi, Options& _opt) const;
113 
114  typedef OMFormat::Header Header;
115  typedef OMFormat::Chunk::Header ChunkHeader;
116  typedef OMFormat::Chunk::PropertyName PropertyName;
117 
118  // initialized/updated by read_binary*/read_ascii*
119  mutable size_t bytes_;
120  mutable Options fileOptions_;
121  mutable Header header_;
122  mutable ChunkHeader chunk_header_;
123  mutable PropertyName property_name_;
124 
125  bool read_binary_vertex_chunk( std::istream &_is,
126  BaseImporter &_bi,
127  Options &_opt,
128  bool _swap) const;
129 
130  bool read_binary_face_chunk( std::istream &_is,
131  BaseImporter &_bi,
132  Options &_opt,
133  bool _swap) const;
134 
135  bool read_binary_edge_chunk( std::istream &_is,
136  BaseImporter &_bi,
137  Options &_opt,
138  bool _swap) const;
139 
140  bool read_binary_halfedge_chunk( std::istream &_is,
141  BaseImporter &_bi,
142  Options &_opt,
143  bool _swap) const;
144 
145  bool read_binary_mesh_chunk( std::istream &_is,
146  BaseImporter &_bi,
147  Options &_opt,
148  bool _swap) const;
149 
150  size_t restore_binary_custom_data( std::istream& _is,
151  BaseProperty* _bp,
152  size_t _n_elem,
153  bool _swap) const;
154 
155 };
156 
157 
158 //== TYPE DEFINITION ==========================================================
159 
160 
162 extern _OMReader_ __OMReaderInstance;
163 OPENMESHDLLEXPORT _OMReader_& OMReader();
164 
165 
166 //=============================================================================
167 } // namespace IO
168 } // namespace OpenMesh
169 //=============================================================================
170 #endif
171 //=============================================================================
Base class for reader modules.
Definition: BaseReader.hh:86
std::string get_extensions() const
Returns a string with the accepted file extensions separated by a whitespace and in small caps...
Definition: OMReader.hh:91
Abstract class defining the basic interface of a dynamic property.
Definition: BaseProperty.hh:58
Base class for importer modules.
Definition: BaseImporter.hh:81
Set options for reader/writer modules.
Definition: Options.hh:88
std::string get_description() const
Returns a brief description of the file type that can be parsed.
Definition: OMReader.hh:90
Implementation of the OM format reader.
Definition: OMReader.hh:83
std::string get_magic() const
Return magic bits used to determine file format.
Definition: OMReader.hh:92
_OMReader_ __OMReaderInstance
Declare the single entity of the OM reader.
Definition: OMReader.cc:68

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