LDM/converters/SoBaseLDMConverter.h

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/*=======================================================================
** Author      : VSG (Apr 2003)
**=======================================================================*/

#ifndef  _SO_LDM_CONVERTER_
#define  _SO_LDM_CONVERTER_

#include <LDM/converters/SoConverter.h>
class SoVolumeReader;

#ifdef _WIN32
#pragma warning( push )
#pragma warning(disable:4251)
#endif

class  SoBaseLDMConverter : public SoConverter
{

public:
  SoBaseLDMConverter(SbBool isClient = FALSE);

  virtual SoVolumeReader* getReader( const SbString& filename, const SbString& fileExt );

  virtual ~SoBaseLDMConverter();

  
private:

  virtual void instanciateReader(SoConverter::ConverterError& error);
  

  virtual void getSubSlice( const SbBox2i32& subSlice, int sliceNumber, void * data ) ;

  //error returned : 0 = ok, 1 = pb = return
  virtual SbBox3f getSize(int& error) ;
  virtual std::vector<SoDataSet::DatumElement> getDatum(int& error) ;
  virtual SbVec3i32 getDimension(int& error) ;
  virtual int getRange( double & rangeMin, double & rangeMax );
  virtual SoVolumeHistogram* getHistogram();
  virtual std::vector<SbVec2d>& getTileMinMax(int numTiles);
  virtual void closeInputFileHandles();

  // Method to retrieve num significant bits. Init the reader (if needed) and retrieve
  // value from it. Return true if value could have been retrieved, false otherwise.
  // if true is returned, numsigbits varaible contains the value
  virtual bool getNumSignificantBits(int& numsigbits);

  virtual void  outputHeader( FILE* );

  virtual void sampleTile( const SbVec3i32& tileDim, int border,
                           const void* const octantTile[8],
                           const int octantExists[8],
                           void *parentTile );

  virtual void sampleTile( const SbVec3i32& tileDim, int type, int border,
                           const void* const octantTile[8],
                           const int octantExists[8],
                           void *parentTile );

  virtual void sampleAverage( const SbVec3i32& tileDim, int type, int border,
                              const void* const octantTile[8], const int octantExists[8],
                              void *parentTile );

  virtual void sampleDecimation(const SbVec3i32& tileDim, int dataType, int border,
                                const void* const octantTile[8],
                                const int octantExists[8],
                                void *parentTile );

  virtual void adjustParameters();
  virtual void handleCustomTags(FILE* filePtr);

  // perform some clean if needed
  virtual void  endConversion();

private:
  static void sampleAverageS(
    int pondCoef,const SbVec3i32& tileDim, int type,
    const void* const childTile,
    void *parentTile,
    int octant, const int octantExists[8]);

  static void sampleDecimationS(
    const SbVec3i32& tileDim, int type,
    const void* const childTile,
    void *parentTile,
    int octant, const int octantExists[8]);

private:
  template <typename T>
  static void sampleAverage(int pondCoef, const SbVec3i32& tileDim, const void* const childTile,
                     void *parentTile, int octant, const int octantExists[8]);

  static void sampleAverageRGBA(int pondCoef, const SbVec3i32& tileDim, const void* const childTile,
                         void *parentTile, int octant, const int octantExists[8]);
  template <typename T>
  static void sampleDecimation(const SbVec3i32& tileDim, const void* const childTile,
                        void *parentTile, int octant, const int octantExists[8]);

  static void getShiftAndHalfTileDim(SbVec2i32& shiftParentOctant,
                              SbVec3i32& halfTileDim,
                              const SbVec3i32& tileDim,
                              int octant);

  static void getRatio ( SbVec3f &ratio,
                  SbVec3i32 &shiftOctant, 
                  SbVec3i32 tileDim, 
                  SbVec3i32 halfTileDim, 
                  int octant,
                  const int octantExists[8]);

  SoDataSet::DataType    m_dataType; //one data only for this type of conversion
};

inline SoVolumeReader* 
SoBaseLDMConverter::getReader( const SbString& , const SbString& )
{
  return NULL;
}

#if defined(_WIN32)
#pragma warning( pop )
#pragma warning(disable:4251)
#endif

#endif // _SO_LDM_CONVERTER_

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