SoVolumeRenderingQuality.h

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**=======================================================================*/
/*=======================================================================
** Author      : Benjamin GRANGE (Aug 2005)
**=======================================================================*/
 
 
#ifndef _SO_VOLUME_QUALITY_H_
#define _SO_VOLUME_QUALITY_H_
 
 
#include <Inventor/SbBasic.h>
#include <Inventor/fields/SoMFNode.h>
#include <Inventor/fields/SoSFBitMask.h>
#include <Inventor/fields/SoSFColor.h>
#include <Inventor/fields/SoSFFloat.h>
#include <Inventor/nodes/SoNode.h>
#include <Inventor/nodes/SoSubNode.h>
#include <Inventor/nodes/SoGroup.h>
#include <VolumeViz/nodes/SoVolumeShader.h>
 
/*----------------------------------------------------------------------------*/
class SoFragmentShader;
class SoVertexShader;
class SoTransferFunction;
class SoVolumeShader;
class SoNodeDependencies;
 
class  SoVolumeRenderingQuality : public SoVolumeShader {
 
  SO_NODE_HEADER(SoVolumeRenderingQuality);
 
public:
  enum GradientQuality
  {
    LOW = 0,
 
    MEDIUM,
 
    HIGH,
#ifndef HIDDEN_FROM_DOC
    LAST_GRADIENT_QUALITY
#endif
  };
 
  enum EdgeDetect2DMethod {
    LUMINANCE = 1,
 
    DEPTH = 1 << 1,
 
    GRADIENT = 1 << 2
  };
 
  SoVolumeRenderingQuality();
 
  SoSFBool lighting;
 
  SoSFBool preIntegrated;
 
  SoSFBool jittering;
 
  SoSFFloat gradientThreshold;
 
  SoSFBool edgeColoring;
 
  SoSFColor edgeColor;
 
  SoSFFloat edgeThreshold;
 
  SoSFBool boundaryOpacity;
 
  SoSFFloat boundaryOpacityIntensity;
 
  SoSFFloat boundaryOpacityThreshold;
 
  SoSFBool edgeDetect2D;
 
  SoSFFloat edgeDetect2DInnerThreshold;
 
  SoSFFloat edgeDetect2DOuterThreshold;
 
  SoSFBitMask edgeDetect2DMethod;
 
  SoSFEnum gradientQuality;
 
  SoSFBool colorInterpolation;
 
  SoSFFloat surfaceScalarExponent;
 
  SoSFFloat unnormalizedGradientExponent;
 
  SoSFBool segmentedInterpolation;
 
  SoSFFloat segmentedInterpolationThreshold;
 
  SoSFBool voxelizedRendering;
 
  SoSFBool voxelOutline;
 
  SoSFFloat voxelOutlineThreshold;
 
  SoSFFloat voxelOutlineWidth;
 
  SoSFColor voxelOutlineColor;
 
  SoSFBool ambientOcclusion;
 
  SoSFBool deferredLighting;
 
#if 1             SoDEPRECATED
  SoSFBool cubicInterpolation;
 
#endif 
#if 1             SoDEPRECATED enum LightingModel
  {
    OIV6,
    OPENGL
  };
SoDEPRECATED
  SoSFEnum lightingModel;
 
#endif 
#ifndef HIDDEN_FROM_DOC
  private:
 
  SoSFFloat AORadius;
  SoSFFloat AONumSample;
  SoSFFloat AOKernelSize;
  SoSFBool AOUseNormal;
  SoSFBool AOShowAO;
  SoSFBool AOShowNormal;
 
  void GLRender(SoGLRenderAction *action);
  virtual void doAction(SoAction *action);
  virtual void notify(SoNotList* list);
 
  // Initializes the classes.
  static void initClass();
  static void exitClass();
 
  GradientQuality getGradientMethod(SoState* state) const;
 
  SbBool hasEdgeDetect2d(SoState* state) const;
 
  SbBool hasAmbientOcclusion(SoState* state) const;
 
  SbBool hasDeferredLighting(SoState* state) const;
 
  SbBool hasCubicInterpolation(SoState* state) const;
 
  SbBool hasBoundaryOpacity(SoState* state) const;
 
  virtual void installTextures(SoGLRenderAction* action);
  
  virtual SbBool isRaycastingEnabled(SoState* state) const;
 
  virtual void allocateTextureUnit(SoGLRenderAction *action) const;
 
  SbBool isVoxelizedRenderingEnabled(SoState* state) const;
 
  virtual bool isInterpolationActive(SoGLRenderAction* action);
 
  virtual bool isColorInterpolationEnabled(SoState* state);
 
  bool isPreintegratedEnabled(SoState* state) const;
 
  void setRemovePhysicalQuality( bool removePhysicalQuality );
 
  void setRenderMode( SoVolumeRender::RenderMode renderMode ) { m_renderMode = renderMode; }
private:
 
  virtual ~SoVolumeRenderingQuality();
 
#endif
 
private:
 
  static const float DEFAULT_INNER_EDGE_THRESHOLD;
  static const float DEFAULT_OUTTER_EDGE_THRESHOLD;
 
  void checkAndUpdateEdge2DSupport(SoGLRenderAction* action);
 
  SbBool hasEdgeColoring(SoState* state) const;
 
  void clampEdgeDetect2dFields();
 
  SoNodeDependencies* m_transferFunctionCache;
 
  SoRef<SoGroup> m_preIntegratedScene;
  SoGroup* m_preIntegratedTexPlaceHolder;
  SoTextureUnit* m_preIntegratedTexUnit;
 
  bool m_removePhysicalQuality;
 
  SoVolumeRender::RenderMode m_renderMode;
};
/*----------------------------------------------------------------------------*/
 
#endif /*_SO_VOLUME_QUALITY_H_*/