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#ifndef _E3D_DLIGHT3D_HXX
#define _E3D_DLIGHT3D_HXX

#ifndef _E3D_LIGHT3D_HXX
#include <bf_svx/light3d.hxx>
#endif
namespace binfilter {

/*************************************************************************
|*
|* gerichtete Lichtquelle, aDirection zeigt ZUR Lichtquelle (also den
|* Lichtstrahlen entgegensetzt); die Position (geerbt von E3dLight) hat
|* auf die Lichtberechnung keinen Einfluss, sondern dient nur der
|* Anordnung in der Szene (fuer evtl. spaetere interaktive Bearbeitung)
|*
\************************************************************************/

class E3dDistantLight : public E3dLight
{
 protected:
	Vector3D aDirection;

	virtual void CreateLightObj();

 public:
	TYPEINFO();
	E3dDistantLight(const Vector3D& rPos,
					const Vector3D& rDirection,
					const Color&    rColor,
					double          fLightIntensity = 1.0);

	E3dDistantLight() :
		aDirection(Vector3D(0, 1, 0))
	{
	}

	virtual ~E3dDistantLight();

	virtual UINT16 GetObjIdentifier() const;

	virtual FASTBOOL CalcLighting(Color& rNewColor,
								  const Vector3D& rPnt,
								  const Vector3D& rPntNormal,
								  const Color& rPntColor);

	const Vector3D& GetDirection() const { return aDirection; }
	void SetDirection(const Vector3D& rNewDir);

	virtual void WriteData(SvStream& rOut) const;
	virtual void ReadData(const SdrObjIOHeader& rHead, SvStream& rIn);

};

}//end of namespace binfilter
#endif			// _E3D_DLIGHT3D_HXX
