SoVolumeTransform.h

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**=======================================================================*/
/*=======================================================================
** Author      : David Beilloin (Sep 2008)
**=======================================================================*/
 
 
#ifndef  _SO_VOLUME_TRANSFORM_
#define  _SO_VOLUME_TRANSFORM_
 
#include <VolumeViz/nodes/SoVolumeRendering.h>
#include <LDM/SoLDMTileID.h>
 
 
#include <Inventor/nodes/SoNode.h>
#include <Inventor/fields/SoSFShort.h>
#include <Inventor/fields/SoSFInt32.h>
 
#include <Inventor/STL/vector>
#include <Inventor/STL/list>
#include <Inventor/STL/map>
 
class SoVolumeData;
class SoGLRenderAction;
class SoCallbackAction;
class SoWriteAction;
class SoState;
class SoPerfCounter;
 
#ifdef _WIN32
#pragma warning( push )
#pragma warning(disable:4251)
#endif
 
class  SoVolumeTransform : public SoNode
{
  SO_NODE_ABSTRACT_HEADER( SoVolumeTransform );
 
 public:
  SoSFShort volumeTransformId;
 
  SoSFInt32 cacheSize;
 
  SoVolumeTransform();
 
  virtual void apply(SoState *state, const SoLDM::DataSetIdPair& p, SoBufferObject *bufferObject , const SoLDMTileID &id) = 0;
 
  virtual SbBool isValid(SoState *state, const SoLDM::DataSetIdPair& p, SoBufferObject *bufferObject , const SoLDMTileID &id);
 
  virtual inline void getTransformedMinMax(double &min, double &max);
 
  SoBufferObject* getFromCache(const SoLDMTileID &tileID);
 
  void addInCache(const SoLDMTileID &tileID, SoBufferObject *bufferObject);
 
  //------------------------------------------------------------------------------
 
 private:
  virtual void doAction( SoAction *action );
  virtual void callback( SoCallbackAction *action );
  virtual void GLRender( SoGLRenderAction *action );
  virtual void pick(SoPickAction *action) ;
  virtual void write(SoWriteAction *action);
 
  //------------------------------------------------------------------------------
 
 private:
 
  static SoBufferObject* applyListFunc(std::vector<SoVolumeTransform*> volumeTransformList, SoState *state, const SoLDM::DataSetIdPair& p, SoBufferObject *bufferObject , const SoLDMTileID &id);
 
  static void initClass();
 
  static void exitClass();
 
  SB_THREAD_TLS_HEADER();
 
  virtual void notify(SoNotList * list);
 
 private:
  virtual ~SoVolumeTransform();
 
  struct MTstruct {
    SoBufferObject *tmpBuffer;
  };
 
 private:
   static SoPerfCounter *m_volumeTransformTimeCounter;
   static SoPerfCounter *m_volumeTransformDataCounter;
 
  SbThreadMutex *m_cacheMutex;
  void resizeCache(const int newSize);
 
  typedef std::pair<SoLDMTileID,SoBufferObject*> TTransformedTileCacheEntry;
  typedef std::list<TTransformedTileCacheEntry> TTransformedTileCache;
  TTransformedTileCache transformedTileCache;
};
 
// Inline functions implementation
void SoVolumeTransform::getTransformedMinMax(double & , double &)
{
  // keep min and max unchanged by default.
}
 
#if defined(_WIN32)
#pragma warning( pop )
#pragma warning(disable:4251)
#endif
 
#endif // _SO_VOLUME_TRANSFORM_