//----------------------------------------------------------------------------
// William Baxter III's Ray Tracer
//
//     Project for Comp 238, Raster Graphics
//     University of North Carolina at Chapel Hill
//     
// $Id:$
//----------------------------------------------------------------------------

#ifndef WB3POINTLIGHT_H
#define WB3POINTLIGHT_H

#include <vec3f.hpp>
#include "ray3f.hpp"
#include "wb3Light.hpp"

//----------------------------------------------------------------------------

class wb3Scene;
class wb3Artifact;

class wb3PointLight : public wb3Light
{
public:

  wb3PointLight(const Vec3f& positon = Vec3f::ZERO);
  wb3PointLight(const Vec3f& color, const Vec3f& positon);
  ~wb3PointLight() {};

  const Vec3f& GetPosition() const;
  void SetPosition(const Vec3f& pos);

  virtual void Contribute(
    const wb3Scene *scene, const wb3Artifact *hit, 
    const Ray3f& r, const Vec3f &isect, const Vec3f &N,
    Vec3f& color) const;

protected:
  Vec3f m_pos;
};

//----------------------------------------------------------------------------
inline const Vec3f& wb3PointLight::GetPosition() const
{
  return m_pos;
}
//----------------------------------------------------------------------------
inline void wb3PointLight::SetPosition(const Vec3f& pos)
{
  m_pos = pos;
}
//----------------------------------------------------------------------------
#endif