Light.hh

/**********************************************************************
 * blaRAY -- photon mapper/raytracer
 * (C) 2008 by Tomasz bla Fortuna <bla@thera.be>, <bla@af.gliwice.pl>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * any later version.
 *
 * See Docs/LICENSE
 *********************/

#ifndef _LIGHT_H_
#define _LIGHT_H_

#include <iostream>
#include <string>

#include "Math/Vector.hh"
#include "World/Color.hh"

namespace World {
        class Light {
        protected:
                const Color C;

                virtual std::string Dump() const = 0;
        public:
                Light(const Color &C) : C(C)
                {
                }

                virtual ~Light() {}

                inline const Color &GetColor() const {
                        return C;
                }

                friend std::ostream &operator<<(std::ostream &os, const Light &L);
        };

        class PointLight : public Light {
        protected:
                const Math::Vector Position;

                virtual std::string Dump() const;
        public:
                PointLight(const Math::Vector &Position,
                           const Color &C = ColLib::White())
                        : Light(C), Position(Position)
                {
                }

                inline const Math::Vector &GetPosition() const {
                        return Position;
                }
        };

        class AmbientLight : public Light {
        protected:

                virtual std::string Dump() const;
        public:
                AmbientLight(const Color &C = ColLib::Gray())
                        : Light(C)
                {
                }
        };
}

#endif

---