Developer Documentation

PLYReader.hh
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41
42
43
44
45 //=============================================================================
46 //
47 // Implements a reader module for OFF files
48 //
49 //=============================================================================
50
51
52 #ifndef __PLYREADER_HH__
53 #define __PLYREADER_HH__
54
55
56 //=== INCLUDES ================================================================
57
58
59
60 #include <iosfwd>
61 #include <string>
62 #include <cstdio>
63 #include <vector>
64
65 #include <OpenMesh/Core/System/config.h>
66 #include <OpenMesh/Core/Utils/SingletonT.hh>
67 #include <OpenMesh/Core/IO/reader/BaseReader.hh>
68 #include <OpenMesh/Core/Utils/GenProg.hh>
69
70
71 //== NAMESPACES ===============================================================
72
73
74 namespace OpenMesh {
75 namespace IO {
76
77
78 //== FORWARDS =================================================================
79
80
81 class BaseImporter;
82
83
84 //== IMPLEMENTATION ===========================================================
85
86
94 class OPENMESHDLLEXPORT _PLYReader_ : public BaseReader
95 {
96 public:
97
98 _PLYReader_();
99
100 std::string get_description() const override { return "PLY polygon file format"; }
101 std::string get_extensions() const override { return "ply"; }
102 std::string get_magic() const override { return "PLY"; }
103
104 bool read(const std::string& _filename,
105 BaseImporter& _bi,
106 Options& _opt) override;
107
108 bool read(std::istream& _is,
109 BaseImporter& _bi,
110 Options& _opt) override;
111
112 bool can_u_read(const std::string& _filename) const override;
113
114 enum ValueType {
115 Unsupported,
116 ValueTypeINT8, ValueTypeCHAR,
117 ValueTypeUINT8, ValueTypeUCHAR,
118 ValueTypeINT16, ValueTypeSHORT,
119 ValueTypeUINT16, ValueTypeUSHORT,
120 ValueTypeINT32, ValueTypeINT,
121 ValueTypeUINT32, ValueTypeUINT,
122 ValueTypeFLOAT32, ValueTypeFLOAT,
123 ValueTypeFLOAT64, ValueTypeDOUBLE
124 };
125
126 private:
127
128 bool can_u_read(std::istream& _is) const;
129
130 bool read_ascii(std::istream& _in, BaseImporter& _bi, const Options& _opt) const;
131 bool read_binary(std::istream& _in, BaseImporter& _bi, bool swap, const Options& _opt) const;
132
133 void readValue(ValueType _type , std::istream& _in, float& _value) const;
134 void readValue(ValueType _type , std::istream& _in, double& _value) const;
135 void readValue(ValueType _type , std::istream& _in, unsigned int& _value) const;
136 void readValue(ValueType _type , std::istream& _in, unsigned short& _value) const;
137 void readValue(ValueType _type , std::istream& _in, unsigned char& _value) const;
138 void readValue(ValueType _type , std::istream& _in, int& _value) const;
139 void readValue(ValueType _type , std::istream& _in, short& _value) const;
140 void readValue(ValueType _type , std::istream& _in, signed char& _value) const;
141
142 template<typename T>
143 void readInteger(ValueType _type, std::istream& _in, T& _value) const;
144
146 void consume_input(std::istream& _in, int _count) const {
147 _in.read(reinterpret_cast<char*>(&buff[0]), _count);
148 }
149
150 mutable unsigned char buff[8];
151
153 mutable Options options_;
154
156 mutable Options userOptions_;
157
158 mutable unsigned int vertexCount_;
159 mutable unsigned int faceCount_;
160
161 mutable uint vertexDimension_;
162
163 enum Property {
164 XCOORD,YCOORD,ZCOORD,
165 TEXX,TEXY,
166 COLORRED,COLORGREEN,COLORBLUE,COLORALPHA,
167 XNORM,YNORM,ZNORM, CUSTOM_PROP, VERTEX_INDICES,
168 UNSUPPORTED
169 };
170
172 mutable std::map<ValueType, int> scalar_size_;
173
174 // Number of vertex properties
175 struct PropertyInfo
176 {
177 Property property;
178 ValueType value;
179 std::string name;//for custom properties
180 ValueType listIndexType;//if type is unsupported, the poerty is not a list. otherwise, it the index type
181 PropertyInfo():property(UNSUPPORTED),value(Unsupported),name(""),listIndexType(Unsupported){}
182 PropertyInfo(Property _p, ValueType _v):property(_p),value(_v),name(""),listIndexType(Unsupported){}
183 PropertyInfo(Property _p, ValueType _v, const std::string& _n):property(_p),value(_v),name(_n),listIndexType(Unsupported){}
184 };
185
186 enum Element {
187 VERTEX,
188 FACE,
189 UNKNOWN
190 };
191
192 // Information on the elements
193 struct ElementInfo
194 {
195 Element element_;
196 std::string name_;
197 unsigned int count_;
198 std::vector< PropertyInfo > properties_;
199 };
200
201 mutable std::vector< ElementInfo > elements_;
202
203 template<typename T>
204 inline void read(_PLYReader_::ValueType _type, std::istream& _in, T& _value, OpenMesh::GenProg::TrueType /*_binary*/) const
205 {
206 readValue(_type, _in, _value);
207 }
208
209 template<typename T>
210 inline void read(_PLYReader_::ValueType _type, std::istream& _in, T& _value, OpenMesh::GenProg::FalseType /*_binary*/) const
211 {
212 _in >> _value;
213 }
214
215 template<typename T>
216 inline void readInteger(_PLYReader_::ValueType _type, std::istream& _in, T& _value, OpenMesh::GenProg::TrueType /*_binary*/) const
217 {
218 readInteger(_type, _in, _value);
219 }
220
221 template<typename T>
222 inline void readInteger(_PLYReader_::ValueType _type, std::istream& _in, T& _value, OpenMesh::GenProg::FalseType /*_binary*/) const
223 {
224 _in >> _value;
225 }
226
227 //read and assign custom properties with the given type. Also creates property, if not exist
228 template<bool binary, typename T, typename Handle>
229 void readCreateCustomProperty(std::istream& _in, BaseImporter& _bi, Handle _h, const std::string& _propName, const ValueType _valueType, const ValueType _listType) const;
230
231 template<bool binary, typename Handle>
232 void readCustomProperty(std::istream& _in, BaseImporter& _bi, Handle _h, const std::string& _propName, const _PLYReader_::ValueType _valueType, const _PLYReader_::ValueType _listIndexType) const;
233 };
234
235
236 //== TYPE DEFINITION ==========================================================
237
238
240 extern _PLYReader_ __PLYReaderInstance;
241 OPENMESHDLLEXPORT _PLYReader_& PLYReader();
242
243
244 //=============================================================================
245 } // namespace IO
246 } // namespace OpenMesh
247 //=============================================================================
248 #endif
249 //=============================================================================
OpenMesh::IO::_PLYReader_::get_extensions
std::string get_extensions() const override
Definition: PLYReader.hh:101
config.h
OpenMesh::IO::_PLYReader_::ElementInfo
Definition: PLYReader.hh:193
OpenMesh::IO::BaseReader
Definition: BaseReader.hh:86
OpenMesh::IO::_PLYReader_::userOptions_
Options userOptions_
Options that the user wants to read.
Definition: PLYReader.hh:156
OpenMesh::IO::_PLYReader_::get_magic
std::string get_magic() const override
Return magic bits used to determine file format.
Definition: PLYReader.hh:102
OpenMesh
Definition: MeshItems.hh:59
OpenMesh::IO::_PLYReader_::consume_input
void consume_input(std::istream &_in, int _count) const
Read unsupported properties in PLY file.
Definition: PLYReader.hh:146
OpenMesh::IO::Options
Set options for reader/writer modules.
Definition: Options.hh:90
BaseImporter
Definition: BaseImporter.hh:1
OpenMesh::IO::BaseImporter
Definition: BaseImporter.hh:83
OpenMesh::IO::_PLYReader_
Definition: PLYReader.hh:94
OpenMesh::IO::_PLYReader_::options_
Options options_
Available per file options for reading.
Definition: PLYReader.hh:153
OpenMesh::IO::_PLYReader_::PropertyInfo
Definition: PLYReader.hh:175
OpenMesh::IO::__PLYReaderInstance
_PLYReader_ __PLYReaderInstance
Declare the single entity of the PLY reader.
Definition: PLYReader.cc:72
OpenMesh::IO::_PLYReader_::get_description
std::string get_description() const override
Returns a brief description of the file type that can be parsed.
Definition: PLYReader.hh:100
OpenMesh::IO::_PLYReader_::scalar_size_
std::map< ValueType, int > scalar_size_
Stores sizes of property types.
Definition: PLYReader.hh:172