source: GTP/trunk/App/Demos/Illum/PathMap/Light.hpp @ 896

#pragma once
#include "Vector.hpp"

class Light
{
public:
        Vector direction;

        Vector position;
        Vector radiance;
        Vector power;
        float area;
        float luminance;

        Light() {};
        Light(const Vector& position, const Vector& radiance)
        {
                this->position = position;
                this->radiance = radiance;
                luminance = radiance.r + radiance.g + radiance.b;
                power = radiance;
                area = 1.0f;
        }
        inline float getLuminance() const {return luminance;}
        virtual float getFormFactor(const Vector& lookpoint, const Vector& normal) const =0;
        virtual Vector getSample() const =0;
        virtual bool isPossiblyVisible(const Vector& point) const {return true;}
        virtual Vector getRadianceAt(const Vector& dir)
        {
                return radiance;
        }
};