Cortex  10.0.0-a4
PDCParticleReader.h
1 //
3 // Copyright (c) 2007-2011, Image Engine Design Inc. All rights reserved.
4 //
5 // Redistribution and use in source and binary forms, with or without
6 // modification, are permitted provided that the following conditions are
7 // met:
8 //
9 // * Redistributions of source code must retain the above copyright
10 // notice, this list of conditions and the following disclaimer.
11 //
12 // * Redistributions in binary form must reproduce the above copyright
13 // notice, this list of conditions and the following disclaimer in the
14 // documentation and/or other materials provided with the distribution.
15 //
16 // * Neither the name of Image Engine Design nor the names of any
17 // other contributors to this software may be used to endorse or
18 // promote products derived from this software without specific prior
19 // written permission.
20 //
21 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
22 // IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
23 // THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
24 // PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
25 // CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
26 // EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
27 // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
28 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
29 // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
30 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
31 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 //
34 
35 #ifndef IE_CORE_PDCPARTICLEREADER_H
36 #define IE_CORE_PDCPARTICLEREADER_H
37 
38 #include "IECore/Export.h"
39 #include "IECore/ParticleReader.h"
40 #include "IECore/VectorTypedData.h"
41 
42 namespace IECore
43 {
44 
50 class IECORE_API PDCParticleReader : public ParticleReader
51 {
52 
53  public :
54 
55  IE_CORE_DECLARERUNTIMETYPED( PDCParticleReader, ParticleReader );
56 
58  PDCParticleReader( const std::string &fileName );
59  ~PDCParticleReader() override;
60 
61  static bool canRead( const std::string &fileName );
62 
63  unsigned long numParticles() override;
64  void attributeNames( std::vector<std::string> &names ) override;
65  DataPtr readAttribute( const std::string &name ) override;
66 
67  protected:
68 
69  // Returns the name of the position primVar
70  std::string positionPrimVarName() override;
71 
72  private :
73 
74  static const ReaderDescription<PDCParticleReader> m_readerDescription;
75 
76  enum AttributeType
77  {
78  Integer = 0,
79  IntegerArray = 1,
80  Double = 2,
81  DoubleArray = 3,
82  Vector = 4,
83  VectorArray = 5,
84  };
85 
86  struct Record
87  {
88  int type;
89  std::streampos position;
90  };
91 
92  // makes sure that m_iStream is open and that m_header is full.
93  // returns true on success and false on failure.
94  bool open();
95  std::ifstream *m_iStream;
96  std::string m_streamFileName;
97  struct
98  {
99  bool valid;
100  int version;
101  bool reverseBytes;
102  int numParticles;
103  std::map<std::string, Record> attributes;
104  } m_header;
105 
106  template<typename T>
107  void readElements( T *buffer, std::streampos pos, unsigned long n ) const;
108 
109  // loads particleId in a completely unfiltered state
110  const Data * idAttribute();
111  DataPtr m_idAttribute;
112 
113 };
114 
115 IE_CORE_DECLAREPTR( PDCParticleReader );
116 
117 } // namespace IECore
118 
119 #endif // IE_CORE_PDCPARTICLEREADER_H
Definition: PDCParticleReader.h:50
Definition: Data.h:46
Definition: ParticleReader.h:52
T reverseBytes(const T &x)
Returns a copy of x with reversed byte order.
Definition: ByteOrder.h:77
This namespace contains all components of the core library.
Definition: AddSmoothSkinningInfluencesOp.h:43