Developer Documentation
PLYReader.hh
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 *
8  * *
9  *---------------------------------------------------------------------------*
10  * This file is part of OpenMesh. *
11  *---------------------------------------------------------------------------*
12  * *
13  * Redistribution and use in source and binary forms, with or without *
14  * modification, are permitted provided that the following conditions *
15  * are met: *
16  * *
17  * 1. Redistributions of source code must retain the above copyright notice, *
18  * this list of conditions and the following disclaimer. *
19  * *
20  * 2. Redistributions in binary form must reproduce the above copyright *
21  * notice, this list of conditions and the following disclaimer in the *
22  * documentation and/or other materials provided with the distribution. *
23  * *
24  * 3. Neither the name of the copyright holder nor the names of its *
25  * contributors may be used to endorse or promote products derived from *
26  * this software without specific prior written permission. *
27  * *
28  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS *
29  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED *
30  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A *
31  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER *
32  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, *
33  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, *
34  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR *
35  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF *
36  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING *
37  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS *
38  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
39  * *
40  * ========================================================================= */
41 
42 /*===========================================================================*\
43  * *
44  * $Revision$ *
45  * $Date$ *
46  * *
47 \*===========================================================================*/
48 
49 
50 //=============================================================================
51 //
52 // Implements a reader module for OFF files
53 //
54 //=============================================================================
55 
56 
57 #ifndef __PLYREADER_HH__
58 #define __PLYREADER_HH__
59 
60 
61 //=== INCLUDES ================================================================
62 
63 
64 
65 #include <iosfwd>
66 #include <string>
67 #include <cstdio>
68 #include <vector>
69 
71 #include <OpenMesh/Core/Utils/SingletonT.hh>
72 #include <OpenMesh/Core/IO/reader/BaseReader.hh>
73 #include <OpenMesh/Core/Utils/GenProg.hh>
74 
75 
76 //== NAMESPACES ===============================================================
77 
78 
79 namespace OpenMesh {
80 namespace IO {
81 
82 
83 //== FORWARDS =================================================================
84 
85 
86 class BaseImporter;
87 
88 
89 //== IMPLEMENTATION ===========================================================
90 
91 
99 class OPENMESHDLLEXPORT _PLYReader_ : public BaseReader
100 {
101 public:
102 
103  _PLYReader_();
104 
105  std::string get_description() const { return "PLY polygon file format"; }
106  std::string get_extensions() const { return "ply"; }
107  std::string get_magic() const { return "PLY"; }
108 
109  bool read(const std::string& _filename,
110  BaseImporter& _bi,
111  Options& _opt);
112 
113  bool read(std::istream& _is,
114  BaseImporter& _bi,
115  Options& _opt);
116 
117  bool can_u_read(const std::string& _filename) const;
118 
119  enum ValueType {
120  Unsupported,
121  ValueTypeINT8, ValueTypeCHAR,
122  ValueTypeUINT8, ValueTypeUCHAR,
123  ValueTypeINT16, ValueTypeSHORT,
124  ValueTypeUINT16, ValueTypeUSHORT,
125  ValueTypeINT32, ValueTypeINT,
126  ValueTypeUINT32, ValueTypeUINT,
127  ValueTypeFLOAT32, ValueTypeFLOAT,
128  ValueTypeFLOAT64, ValueTypeDOUBLE
129  };
130 
131 private:
132 
133  bool can_u_read(std::istream& _is) const;
134 
135  bool read_ascii(std::istream& _in, BaseImporter& _bi, const Options& _opt) const;
136  bool read_binary(std::istream& _in, BaseImporter& _bi, bool swap, const Options& _opt) const;
137 
138  float readToFloatValue(ValueType _type , std::fstream& _in) const;
139 
140  void readValue(ValueType _type , std::istream& _in, float& _value) const;
141  void readValue(ValueType _type , std::istream& _in, double& _value) const;
142  void readValue(ValueType _type , std::istream& _in, unsigned int& _value) const;
143  void readValue(ValueType _type , std::istream& _in, unsigned short& _value) const;
144  void readValue(ValueType _type , std::istream& _in, unsigned char& _value) const;
145  void readValue(ValueType _type , std::istream& _in, int& _value) const;
146  void readValue(ValueType _type , std::istream& _in, short& _value) const;
147  void readValue(ValueType _type , std::istream& _in, signed char& _value) const;
148 
149  void readInteger(ValueType _type, std::istream& _in, int& _value) const;
150  void readInteger(ValueType _type, std::istream& _in, unsigned int& _value) const;
151 
153  void consume_input(std::istream& _in, int _count) const {
154  _in.read(reinterpret_cast<char*>(&buff[0]), _count);
155  }
156 
157  mutable unsigned char buff[8];
158 
160  mutable Options options_;
161 
164 
165  mutable unsigned int vertexCount_;
166  mutable unsigned int faceCount_;
167 
168  mutable ValueType vertexType_;
169  mutable uint vertexDimension_;
170 
171  enum Property {
172  XCOORD,YCOORD,ZCOORD,
173  TEXX,TEXY,
174  COLORRED,COLORGREEN,COLORBLUE,COLORALPHA,
175  XNORM,YNORM,ZNORM, CUSTOM_PROP, VERTEX_INDICES,
176  UNSUPPORTED
177  };
178 
180  mutable std::map<ValueType, int> scalar_size_;
181 
182  // Number of vertex properties
184  {
185  Property property;
186  ValueType value;
187  std::string name;//for custom properties
188  ValueType listIndexType;//if type is unsupported, the poerty is not a list. otherwise, it the index type
189  PropertyInfo():property(UNSUPPORTED),value(Unsupported),name(""),listIndexType(Unsupported){}
190  PropertyInfo(Property _p, ValueType _v):property(_p),value(_v),name(""),listIndexType(Unsupported){}
191  PropertyInfo(Property _p, ValueType _v, const std::string& _n):property(_p),value(_v),name(_n),listIndexType(Unsupported){}
192  };
193  mutable std::vector< PropertyInfo > vertexProperties_;
194  mutable std::vector< PropertyInfo > faceProperties_;
195 
196  template<typename T>
197  inline void read(_PLYReader_::ValueType _type, std::istream& _in, T& _value, OpenMesh::GenProg::TrueType /*_binary*/) const
198  {
199  readValue(_type, _in, _value);
200  }
201 
202  template<typename T>
203  inline void read(_PLYReader_::ValueType _type, std::istream& _in, T& _value, OpenMesh::GenProg::FalseType /*_binary*/) const
204  {
205  _in >> _value;
206  }
207 
208  //read and assign custom properties with the given type. Also creates property, if not exist
209  template<bool binary, typename T, typename Handle>
210  void readCreateCustomProperty(std::istream& _in, BaseImporter& _bi, Handle _h, const std::string& _propName, const ValueType _valueType, const ValueType _listType) const;
211 
212  template<bool binary, typename Handle>
213  void readCustomProperty(std::istream& _in, BaseImporter& _bi, Handle _h, const std::string& _propName, const _PLYReader_::ValueType _valueType, const _PLYReader_::ValueType _listIndexType) const;
214 };
215 
216 
217 //== TYPE DEFINITION ==========================================================
218 
219 
222 OPENMESHDLLEXPORT _PLYReader_& PLYReader();
223 
224 
225 //=============================================================================
226 } // namespace IO
227 } // namespace OpenMesh
228 //=============================================================================
229 #endif
230 //=============================================================================
std::string get_extensions() const
Definition: PLYReader.hh:106
Options userOptions_
Options that the user wants to read.
Definition: PLYReader.hh:163
std::map< ValueType, int > scalar_size_
Stores sizes of property types.
Definition: PLYReader.hh:180
void consume_input(std::istream &_in, int _count) const
Read unsupported properties in PLY file.
Definition: PLYReader.hh:153
Set options for reader/writer modules.
Definition: Options.hh:95
std::string get_magic() const
Return magic bits used to determine file format.
Definition: PLYReader.hh:107
_PLYReader_ __PLYReaderInstance
Declare the single entity of the PLY reader.
Definition: PLYReader.cc:79
Options options_
Available per file options for reading.
Definition: PLYReader.hh:160
std::string get_description() const
Returns a brief description of the file type that can be parsed.
Definition: PLYReader.hh:105