#ifndef GLOXLOOKATPERSPECTIVE_HPP_
#define GLOXLOOKATPERSPECTIVE_HPP_

/*
 * Author: jrahm
 * created: 2013/10/24
 * GloxLookAtPerspective.hpp: <description>
 */

#include <GL/glu.h>

#include "glox/GloxDebug.hpp"
#include "glox/GloxPerspective.hpp"
#include "glox/GloxStandardProjection.hpp"
#include "glox/GloxState.hpp"

namespace glox {

/* This is a projection which is a thin
 * layer around gluLookAt */
class GloxLookAtPerspective : public GloxStandardProjection {
 public:
  inline GloxLookAtPerspective(
      const GloxPoint<>& pos = GloxPoint<>(),
      const GloxPoint<>& lookAt = GloxPoint<>(),
      const GloxPoint<>& upVec = GloxPoint<>(0.0f, 1.0f, 0.0f),
      float fov = 50.0, float asp = 1.8, float zn = 0.1, float zfar = 500.0)
      : GloxStandardProjection(pos, fov, asp, zn, zfar),
        m_LookAtPoint(lookAt),
        m_UpVector(upVec) {}

  inline virtual void render() const {
    //		GloxTrace( "GloxLookAtPerspective", "gluLookAt: %s %s %s\n",
    //			getPosition().toString().c_str(), m_LookAtPoint.toString().c_str(),
    //			m_UpVector.toString().c_str() );

    gluLookAt(getPosition().getX(), getPosition().getY(), getPosition().getZ(),
              m_LookAtPoint.getX(), m_LookAtPoint.getY(), m_LookAtPoint.getZ(),
              m_UpVector.getX(), m_UpVector.getY(), m_UpVector.getZ());
  }

  inline void setLookAtPoint(const GloxPoint<>& point) {
    m_LookAtPoint = point;
  }

  inline const GloxPoint<>& getLookAtPoint() { return m_LookAtPoint; }

  inline void setUpVector(const GloxPoint<>& point) { m_UpVector = point; }

  inline const GloxPoint<>& getUpVector() { return m_UpVector; }

 private:
  GloxPoint<> m_LookAtPoint;
  GloxPoint<> m_UpVector;
};

}  // namespace glox

#endif /* GLOXLOOKATPERSPECTIVE_HPP_ */