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#ifndef __PATHTRACER_LUMINAIRE__HPP__
#define __PATHTRACER_LUMINAIRE__HPP__

#include <CGLA/Mat4x4f.h>

#include "core.hpp"

class luminaire
{
public:
        luminaire(int samples = 1);
        virtual ~luminaire(void) = 0;

        //transformation matrix
        const CGLA::Mat4x4f& transform(void) const;
        void set_transform(const CGLA::Mat4x4f&);

        //sampling
        virtual bool sample(const ray&, const hit_info&, CGLA::Vec3f& L, 
                CGLA::Vec3f& w) const = 0;

        //sample count for direct lighting integration
        int samples(void) const;
        void set_samples(int);

protected:
        int samples_;
        CGLA::Mat4x4f trs_;
};

#endif


//02566 framework, Anders Wang Kristensen, awk@imm.dtu.dk, 2007