#ifndef INCLUDED_CAMERA
#define INCLUDED_CAMERA

#ifndef INCLUDED_SCENE_GRAPH
#  include "SceneGraph.h"
#endif

class Camera : public SceneGraph {
public:
    Camera(void);

    float lookat_base[4];
    float up_base[4];
    float fov;
    float near;
    float far;

    void createViewTransformMatrix(float*, float*, float*, float*);
    void createPerspectiveTransformMatrix(float *, float);
    void createScreenTransformMatrix(float *sm, float _w, float _h);

    void update(int screen_w, int screen_h);
    void getLookAt(float *lookat);
    void getUp(float *up, float *lookat);
};

typedef Camera *CameraPtr;

#endif