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OMFormatT.cc
1 /* ========================================================================= *
2 * *
3 * OpenMesh *
4 * Copyright (c) 2001-2015, RWTH-Aachen University *
5 * Department of Computer Graphics and Multimedia *
6 * All rights reserved. *
7 * www.openmesh.org *
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40 * ========================================================================= */
41
42 /*===========================================================================*\
43 * *
44 * $Revision$ *
45 * $Date$ *
46 * *
47 \*===========================================================================*/
48
49
50 //=============================================================================
51 //
52 // Helper Functions for binary reading / writing
53 //
54 //=============================================================================
55
56
57 #define OPENMESH_IO_OMFORMAT_CC
58
59
60 //== INCLUDES =================================================================
61
62 #include <OpenMesh/Core/IO/OMFormat.hh>
63 #include <algorithm>
64 #include <iomanip>
65
66 //== NAMESPACES ===============================================================
67
68 namespace OpenMesh {
69 namespace IO {
70
71 // helper to store a an integer
72 template< typename T >
73 size_t
74 store( std::ostream& _os,
75 const T& _val,
76 OMFormat::Chunk::Integer_Size _b,
77 bool _swap,
78 t_signed)
79 {
80 assert( OMFormat::is_integer( _val ) );
81
82 switch( _b )
83 {
84 case OMFormat::Chunk::Integer_8:
85 {
86 OMFormat::int8 v = static_cast<OMFormat::int8>(_val);
87 return store( _os, v, _swap );
88 }
89 case OMFormat::Chunk::Integer_16:
90 {
91 OMFormat::int16 v = static_cast<OMFormat::int16>(_val);
92 return store( _os, v, _swap );
93 }
94 case OMFormat::Chunk::Integer_32:
95 {
96 OMFormat::int32 v = static_cast<OMFormat::int32>(_val);
97 return store( _os, v, _swap );
98 }
99 case OMFormat::Chunk::Integer_64:
100 {
101 OMFormat::int64 v = static_cast<OMFormat::int64>(_val);
102 return store( _os, v, _swap );
103 }
104 }
105 return 0;
106 }
107
108
109 // helper to store a an unsigned integer
110 template< typename T >
111 size_t
112 store( std::ostream& _os,
113 const T& _val,
114 OMFormat::Chunk::Integer_Size _b,
115 bool _swap,
116 t_unsigned)
117 {
118 assert( OMFormat::is_integer( _val ) );
119
120 switch( _b )
121 {
122 case OMFormat::Chunk::Integer_8:
123 {
124 OMFormat::uint8 v = static_cast<OMFormat::uint8>(_val);
125 return store( _os, v, _swap );
126 }
127 case OMFormat::Chunk::Integer_16:
128 {
129 OMFormat::uint16 v = static_cast<OMFormat::uint16>(_val);
130 return store( _os, v, _swap );
131 }
132 case OMFormat::Chunk::Integer_32:
133 {
134 OMFormat::uint32 v = static_cast<OMFormat::uint32>(_val);
135 return store( _os, v, _swap );
136 }
137
138 case OMFormat::Chunk::Integer_64:
139 {
140 OMFormat::uint64 v = static_cast<OMFormat::uint64>(_val);
141 return store( _os, v, _swap );
142 }
143 }
144 return 0;
145 }
146
147
148 // helper to store a an integer
149 template< typename T >
150 size_t
151 restore( std::istream& _is,
152 T& _val,
153 OMFormat::Chunk::Integer_Size _b,
154 bool _swap,
155 t_signed)
156 {
157 assert( OMFormat::is_integer( _val ) );
158 size_t bytes = 0;
159
160 switch( _b )
161 {
162 case OMFormat::Chunk::Integer_8:
163 {
164 OMFormat::int8 v;
165 bytes = restore( _is, v, _swap );
166 _val = static_cast<T>(v);
167 break;
168 }
169 case OMFormat::Chunk::Integer_16:
170 {
171 OMFormat::int16 v;
172 bytes = restore( _is, v, _swap );
173 _val = static_cast<T>(v);
174 }
175 case OMFormat::Chunk::Integer_32:
176 {
177 OMFormat::int32 v;
178 bytes = restore( _is, v, _swap );
179 _val = static_cast<T>(v);
180 }
181 case OMFormat::Chunk::Integer_64:
182 {
183 OMFormat::int64 v;
184 bytes = restore( _is, v, _swap );
185 _val = static_cast<T>(v);
186 }
187 }
188 return bytes;
189 }
190
191
192 // helper to store a an unsigned integer
193 template< typename T >
194 size_t
195 restore( std::istream& _is,
196 T& _val,
197 OMFormat::Chunk::Integer_Size _b,
198 bool _swap,
199 t_unsigned)
200 {
201 assert( OMFormat::is_integer( _val ) );
202 size_t bytes = 0;
203
204 switch( _b )
205 {
206 case OMFormat::Chunk::Integer_8:
207 {
208 OMFormat::uint8 v;
209 bytes = restore( _is, v, _swap );
210 _val = static_cast<T>(v);
211 break;
212 }
213 case OMFormat::Chunk::Integer_16:
214 {
215 OMFormat::uint16 v;
216 bytes = restore( _is, v, _swap );
217 _val = static_cast<T>(v);
218 break;
219 }
220 case OMFormat::Chunk::Integer_32:
221 {
222 OMFormat::uint32 v;
223 bytes = restore( _is, v, _swap );
224 _val = static_cast<T>(v);
225 break;
226 }
227
228 case OMFormat::Chunk::Integer_64:
229 {
230 OMFormat::uint64 v;
231 bytes = restore( _is, v, _swap );
232 _val = static_cast<T>(v);
233 break;
234 }
235 }
236 return bytes;
237 }
238
239 //=============================================================================
240 } // namespace IO
241 } // namespace OpenMesh
242 //=============================================================================
OpenMesh
Definition: MeshItems.hh:64