25 };

    26 

    27 class Camera

    28 {

    29 public:

    30 	Vector3 eye, p, u, v;

    31 	float f;

    32 

    33 	Camera(): eye(0,0,10), p(0,0,-1), u(-1,0,0), v(0,1,0), f(3.14/4.0) {};

    34 	Camera(const Vector3 &C, const Vector3 &ap, const Vector3 &au, const Vector3 &av):

    35 		eye(C), p(ap), u(au), v(av), f(3.14/4.0) {};

    36 	void setEye(const Vector3 &aeye) { eye = aeye; };

    37 	void setFocusLength(const float af) { f = af; };