---

Light.h

/*
  File: Light.h

  Copyright(C) C. Kotterink, Computed Graphics
*/
#ifndef LIGHT_H
#define LIGHT_H

#include<DynamicObject.h>

#include<ObjectFile.h>
#include<Color4.h>
#include<Vertex3.h>

class Light : public DynamicObject
{
    DYNAMIC_OBJECT;
public:
    Light(Vertex3 p = Vertex3(0.0, 0.0, 1.0));

    const Vertex3 &getPosition() {
        return position;
    }
    const Color4 getAmbient() {
        return ambient;
    }
    const Color4 getDiffuse() {
        return diffuse;
    }
    const Color4 getSpecular() {
        return specular;
    }
    virtual real illuminationFactor(const Vertex3 &v);

    // Inherited from DynamicObject
    void parseSymbol(Token &t, ObjectFile &file);
    void writeParams(ostream &stream);
    
protected:
    // Inherited from DynamicObject
    void createSymbols();

    Vertex3 position;
    Color4 ambient;
    Color4 diffuse;
    Color4 specular;
    Vertex3 attenuation;
    Vertex3 direction;
    real density;
    real cutoff;        // cosine of cutoff angle

private:
    typedef DynamicObject super;
};
#endif

---

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