SoVolumeMaskGroup.h

/*=======================================================================
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**=======================================================================*/
/*=======================================================================
** Author      : VSG (MMM YYYY)
**=======================================================================*/
#ifndef SOVOLUMEMASKGROUP_H
#define SOVOLUMEMASKGROUP_H
 
#include <VolumeViz/nodes/SoVolumeRendering.h>
#include <Inventor/nodes/SoGroup.h>
#include <Inventor/nodes/SoSeparator.h>
#include <Inventor/nodes/SoTexture2.h>
#include <Inventor/nodes/SoTextureUnit.h>
 
class SbVec4ub;
class SoVolumeDataDrawStyle;
class SoTransferFunction;
class SoCache;
 
class  SoVolumeMaskGroup : public SoGroup
{
  SO_NODE_HEADER(SoVolumeMaskGroup);
public:
  SoVolumeMaskGroup();
 
  static short TRANSFERFUNCTION_INTERSECTION_ID;
 
private:
  virtual void GLRender(SoGLRenderAction *action);
  virtual void doAction(SoAction *action);
  virtual void pick(SoPickAction *action);
 
private:
  static void initClass();
  static void exitClass();
 
  static int getTestTextureUnit(SoGLRenderAction *action);
  static int getStyleTextureUnit(SoGLRenderAction *action);
 
  SoSFBool isosurfaceCompliance;
 
  // Size of the vmTex (it is a square texture used to render boundary)
  static const int s_vmTexSize;
 
private:
  void updateCache(SoState *state);
 
  ~SoVolumeMaskGroup();
 
private:
  struct BoundaryPalette
  {
    BoundaryPalette();
    unsigned char renderStyle;
    unsigned char padRenderStyle[3];
    unsigned char diffuse[4];
    unsigned char specular[3];
    unsigned char shininess;
  };
 
  void setupIntersectionDrawStyle(SoAction* state);
 
  SoVolumeDataDrawStyle* getVolumeDataDrawStyle(SoState* state);
 
  void bindVmTexture(SoGLRenderAction* action, const SoLDM::DataSetIdPairList& dsList);
 
  static bool isSupported(SoState* state);
 
  void invalidateVolumeMaskTextures(SoState* state);
 
  SoRef<SoTexture2> m_styleTexture;
  SoRef<SoTextureUnit> m_styleTextureUnit;
 
  SoRef<SoTexture2> m_testTexture;
  SoRef<SoTextureUnit> m_testTextureUnit;
 
  SoRef<SoTextureUnit> m_emptyTextureUnit;
 
  SoRef<SoGroup> m_internalSceneGraph;
 
  SoCache* m_cacheData;
 
  SoCache* m_cacheStyle;
 
  SoVolumeDataDrawStyle* m_defaultIntersectionDrawStyle;
 
  SoTransferFunction* m_defaultIntersectionTf;
 
  friend struct SetBoundsColorsAndStyles;
};
 
#endif