SoColorMap.h

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**=======================================================================*/
/*=======================================================================
** Author      : R. ALBOU (Jan 2005)
**=======================================================================*/
 
#ifndef  _SO_COLOR_MAP_
#define  _SO_COLOR_MAP_
 
#include <Inventor/nodes/SoNode.h>
#include <Inventor/fields/SoSFFloat.h>
#include <Inventor/fields/SoMFFloat.h>
#include <Inventor/fields/SoSFEnum.h>
#include <Inventor/SbPImpl.h>
 
#ifdef _MSC_VER
#pragma warning( push )
#pragma warning(disable:4251)
#endif
 
SO_PIMPL_BASE_PUBLIC_DECLARATION(SoColorMap)
 
 
class  SoColorMap : public SoNode {  
  SO_NODE_HEADER(SoColorMap) ;
 
  SO_PIMPL_BASE_PUBLIC_HEADER(SoColorMap)
 
 public:
   enum ColorMapFormat {
    LUMINANCE,
    ALPHA,
 
    LUMINANCE_ALPHA,
 
    RGB,
 
    RGB_ALPHA
   } ;
 
   enum PredefinedColorMap {
     NONE,
     GRAY,
     TEMPERATURE,
     PHYSICS,
     STANDARD,
     GLOW,
     BLUE_RED,
     SEISMIC,
     BLUE_WHITE_RED,
     INTENSITY,
     LABEL_256,
     VOLREN_RED,
     VOLREN_GREEN,
     AIRWAY,
     AIRWAY_SURFACES,
     INTENSITY_REVERSED
   } ; 
 
  SoSFFloat   min ;
 
  SoSFFloat   max ;
 
  SoSFEnum   predefinedColorMap ;
   
  SoSFEnum   colorMapFormat ;
 
  SoMFFloat  colorMap ;
 
  enum Interpolation
  {
    NEAREST,
    LINEAR
  };
 
  SoSFEnum interpolation;
 
  SoColorMap() ;
 
  unsigned int getNumColor() const;
 
  SbBool hasTransparency() const;
 
private:
  virtual void  doAction(SoAction *action);
  virtual void  GLRender(SoGLRenderAction *action) ;
  virtual void callback( SoCallbackAction* action );
 
/*----------------------------------------------------------------------------*/
  
private:
 
  static void initClass();
  static void exitClass();
 
  virtual void notify(SoNotList *list);
 
  //bind fragment and texture object
  void enableFragment(SoState* state, SbBool enable);
  //do the teximage or colortable for the palette
  void installGLColorMap(SoState* state) ;
 
  //Remap the defined color map between min and max indices
  //minType and maxType are respectively the minimum value and 
  //the maximum value of the datatype  
   void reMap(float minType, float maxType, SbBool forceUpdate = FALSE);
 
   // Returns the packed color map
   unsigned int* getPackedColorMap() const;
 
  virtual bool affectsPath() const;
 
private:
 
  virtual ~SoColorMap();
 
private :
 
  // Function to factorise constructors code
  void construct();
 
} ;
/*----------------------------------------------------------------------------*/
 
#ifdef _MSC_VER
#pragma warning( pop )
#endif
 
#endif /* _SO_COLOR_MAP_ */