SoGradientBackground.h

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**=======================================================================*/
/*=======================================================================
** Author      : VSG (MMM YYYY)
**=======================================================================*/
 
#ifndef _SO_GRADIENT_BACKGROUND_H_
#define _SO_GRADIENT_BACKGROUND_H_
 
#include <Inventor/fields/SoSFColor.h>
#include <Inventor/fields/SoSFBool.h>
 
#include <Inventor/SbPImpl.h>
#include <Inventor/nodes/SoBackground.h>
 
SO_PIMPL_PUBLIC_DECLARATION(SoGradientBackground)
 

class  SoGradientBackground : public SoBackground {
 
  SO_PIMPL_PUBLIC_HEADER(SoGradientBackground)
  SO_NODE_HEADER(SoGradientBackground);
 
 public:
   // Fields:
   // 
   SoSFColor    color0;
   SoSFColor    color1;
   SoSFBool     swapColors;

   SoGradientBackground();
 
 private:
   // Initializes this class for use in scene graphs. This
   // should be called after database initialization and before
   // any instance of this node is constructed.
   static void    initClass();
   static void    exitClass();
 
 private:
   // Implement render action
   // We will inherit all other action methods from SoNode.
   // We don't need a doAction because this node has no effect
   // on traversal state (or at least it shouldn't :-).
   virtual void   GLRender(SoGLRenderAction *action);
 
 private:
   // Destructor. Protected to keep people from trying to delete
   // nodes, rather than using the reference count mechanism.
   virtual ~SoGradientBackground();
 
private:
  void commonConstructor();
  const SbColor interpColor( float t, SbColor &c0, SbColor &c1 ) const;
};
 
#endif //SoGradientBackground