SoSpotLight.h

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/*=======================================================================
** Author      : Paul S. Strauss (MMM yyyy)
**=======================================================================*/
/*=======================================================================
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 **=======================================================================*/
/*=======================================================================
** Modified by : VSG (MMM YYYY)
**=======================================================================*/
 
 
#ifndef  _SO_SPOT_LIGHT_
#define  _SO_SPOT_LIGHT_
 
#include <Inventor/fields/SoSFVec3f.h>
#include <Inventor/nodes/SoLight.h>
 
//
//  Class: SoSpotLight
//
//  Spot light source node. A spot light illuminates from a point in
//  space along a primary direction. The illumination is within a cone
//  whose angle is given by the cutOffAngle field. The intensity of
//  the source may vary as the illumination direction diverges from
//  the primary direction, as specified in the dropOffRate field.
//
 
class  SoSpotLight : public SoLight
{
  SO_NODE_HEADER( SoSpotLight );
 
public:
  SoSFVec3f location;
 
  SoSFVec3f direction;
 
  SoSFFloat dropOffRate;
 
  SoSFFloat cutOffAngle;
 
  SoSpotLight();
 
private:
  // Creates a light source during rendering
  virtual void GLRender( SoGLRenderAction* action );
 
private:
  static void initClass();
  static void exitClass();
 
private:
  virtual ~SoSpotLight();
};
 
#endif /* _SO_SPOT_LIGHT_ */