light.h

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#ifndef RAY_LIGHT_INCLUDED
#define RAY_LIGHT_INCLUDED
#include "shape.h"
 
namespace Ray
{
    class Light
    {
        friend std::ostream &operator << ( std::ostream & , const Light & );
        friend std::istream &operator >> ( std::istream & ,       Light & );
 
        virtual void _write( std::ostream &stream ) const=0;
 
        virtual void _read( std::istream &stream )=0;
    protected:
        Util::Point3D _ambient;
 
        Util::Point3D _diffuse;
 
        Util::Point3D _specular;
 
    public:
        virtual ~Light( void ){}
 
        virtual std::string name( void ) const = 0;
 
        virtual Util::Point3D getAmbient( Util::Ray3D ray , const class RayShapeIntersectionInfo& iInfo , const Material &material ) const=0;
 
        virtual Util::Point3D getDiffuse( Util::Ray3D ray , const class RayShapeIntersectionInfo& iInfo , const Material &material ) const=0;
 
        virtual Util::Point3D getSpecular( Util::Ray3D ray , const class RayShapeIntersectionInfo& iInfo , const Material &material ) const=0;
 
        virtual bool isInShadow( const class RayShapeIntersectionInfo& iInfo , const class Shape &shape , unsigned int tIdx ) const=0;
 
        virtual Util::Point3D transparency( const class RayShapeIntersectionInfo &iInfo , const class Shape &shape , Util::Point3D cLimit , unsigned int samples , unsigned int tIdx ) const=0;
 
        virtual void drawOpenGL( int index , GLSLProgram * glslProgram ) const=0;
    };
 
    inline std::ostream &operator << ( std::ostream &stream , const Light &light ){ light._write( stream ) ; return stream; }
 
    inline std::istream &operator >> ( std::istream &stream ,       Light &light ){ light._read( stream ) ; return stream; }
}
#endif // RAY_LIGHT_INCLUDED