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SoVolumeReader.h
1 #ifndef COIN_SOVOLUMEREADER_H
2 #define COIN_SOVOLUMEREADER_H
3 
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35 
36 #include <VolumeViz/nodes/SoVolumeData.h>
37 
38 class SbBox2s;
39 class SbBox3f;
40 class SbVec3s;
41 
42 
43 class SIMVOLEON_DLL_API SoVolumeReader {
44 public:
45  SoVolumeReader(void);
46  virtual ~SoVolumeReader();
47 
48  virtual void setUserData(void * data);
49  virtual int getNumSignificantBits(void);
50 
51  virtual void getDataChar(SbBox3f & size, SoVolumeData::DataType & type,
52  SbVec3s & dim) = 0;
53 
54  enum CopyPolicy { COPY, NO_COPY, NO_COPY_AND_DELETE };
55 
56  virtual void getSubSlice(SbBox2s & slice, int slicenumber, void * voxels) = 0;
57  virtual SbBool getSubVolume(SbBox3s & volume, void * voxels);
58  virtual SbBool getSubVolume(const SbBox3s & volume,
59  const SbVec3s subsamplelevel, void *& voxels);
60  virtual SbBool getSubVolumeInfo(SbBox3s & volume,
61  SbVec3s reqsubsamplelevel,
62  SbVec3s & subsamplelevel,
63  SoVolumeReader::CopyPolicy & policy);
64 
65  SbVec3s getNumVoxels(SbVec3s realsize, SbVec3s subsamplinglevel) const;
66  SbVec3s getSizeToAllocate(SbVec3s realsize, SbVec3s subsamplinglevel) const;
67 
68  int setFilename(const char * filename);
69 
70 protected:
71  void * getBuffer(int64_t offset, unsigned int size);
72  int bytesToInt(unsigned char * ptr, int sizeBytes);
73  void swapBytes(int * intPtr, int sizeBytes);
74  int64_t fileSize(void);
75 
76  void * m_data;
77 
78 private:
79  friend class SoVolumeReaderP;
80  class SoVolumeReaderP * pimpl;
81 
82  // FIXME: SoVolumeData shouldn't really access m_data, as voxel data
83  // should be stored within SoVolumeData, and not on this pointer.
84  // 20041008 mortene.
85  friend class SoVolumeData; // For m_data access.
86 };
87 
88 #endif // !COIN_SOVOLUMEREADER_H
The main interface for setting up volume data sets.
Definition: SoVolumeData.h:54
Abstract superclass for all volume data reader classes.
Definition: SoVolumeReader.h:43