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/home/mrm/Simex/simulations/hr_bike/pv_camera.h

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#ifndef Pv_Camera_Included
#define Pv_Camera_Included

#include "GL/gl.h"

#include "pv_matrix.h"
#include "pv_gl.h"
#include "pv_point.h"


class Pv_Camera{
  Pv_Matrix init_m;
  Pv_Matrix m;
  Pv_Matrix saved_m; 

  /*radius for pitch and yaw*/
  double radius;

 public:
  /*constructors*/
  Pv_Camera(Pv_Point,Pv_Point);/*point where it is, 
                                *point were it looks
                                *orientation is vertical*/
  Pv_Camera(Pv_Point position,Pv_Point eye,Pv_Point up);

  /*get*/
  Pv_Matrix get_m() const;

  /*put*/
  
  /*operators*/
  friend std::ostream& operator<< (std::ostream& s,Pv_Camera& c);
  
  /*coordinate transformations*/
  double mouse_to_gl_x(int x);
  double mouse_to_gl_y(int y);
  double mouse_to_gl_angle_x(int x);
  double mouse_to_gl_angle_y(int y);
  double mouse_to_gl_roll_angle(int x);

  /*move*/
  void translate(double x,double y);
  void zoom(double x,double y);
  void roll(double x,double y);
  void rotate(double x,double y);

  /*misc*/
  void reset();
  void reshape();
  void save();
  void restore();
};
#endif

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