SoDirectionalLight.h

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/*=======================================================================
** Author      : Paul S. Strauss (MMM yyyy)
**=======================================================================*/
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 **=======================================================================*/
/*=======================================================================
** Modified by : VSG (MMM YYYY)
**=======================================================================*/
 
 
#ifndef  _SO_DIRECTIONAL_LIGHT_
#define  _SO_DIRECTIONAL_LIGHT_
 
#include <Inventor/fields/SoSFVec3f.h>
#include <Inventor/nodes/SoLight.h>
 
//
//  Class: SoDirectionalLight
//
//  Directional light source node. A directional light illuminates in
//  rays parallel to a given direction vector. It is equivalent to the
//  GL's "infinite" light source, so named because it is like a point
//  source at an infinite distance (which seems to me to be a pretty
//  bizarre way of naming things.)
//
 
class  SoDirectionalLight : public SoLight
{
  SO_NODE_HEADER( SoDirectionalLight );
 
public:
  SoSFVec3f direction;
 
  SoDirectionalLight();
 
private:
  // Creates a light source during rendering
  virtual void GLRender( SoGLRenderAction* action );
 
private:
  static void initClass();
  static void exitClass();
 
  virtual SoCamera* getCamera( SoState* state, SoPath* scene, float visibilityLength );
 
private:
  virtual ~SoDirectionalLight();
};
 
#endif /* _SO_DIRECTIONAL_LIGHT_ */