spotLight.h

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#ifndef SPOT_LIGHT_INCLUDED
#define SPOT_LIGHT_INCLUDED
#include "light.h"
 
namespace Ray
{
    class SpotLight : public Light
    {
        Util::Point3D _location;
 
        Util::Point3D _direction;
 
        double _constAtten;
 
        double _linearAtten;
 
        double _quadAtten;
 
        double _cutOffAngle;
 
        double _dropOffRate;
 
    public:
        static std::string Directive( void ){ return "light_spot"; }
 
        // Light methods //
    private:
        void _write( std::ostream &stream ) const;
        void _read( std::istream &stream );
    public:
        std::string name( void ) const { return "spot light"; }
        Util::Point3D getAmbient ( Util::Ray3D ray , const class RayShapeIntersectionInfo& iInfo , const Material &material ) const;
        Util::Point3D getDiffuse ( Util::Ray3D ray , const class RayShapeIntersectionInfo& iInfo , const Material &material ) const;
        Util::Point3D getSpecular( Util::Ray3D ray , const class RayShapeIntersectionInfo& iInfo , const Material &material ) const;
        bool isInShadow( const class RayShapeIntersectionInfo& iInfo , const Shape &shape , unsigned int tIdx ) const;
        Util::Point3D transparency( const class RayShapeIntersectionInfo &iInfo , const class Shape &shape , Util::Point3D cLimit , unsigned int samples , unsigned int tIdx ) const;
        void drawOpenGL( int index , GLSLProgram * glslProgram ) const;
    };
}
#endif // SPOT_LIGHT_INCLUDED