class view :?rect:float SFRect.t -> unit ->object..end
val view : SFView.t
method center : float * float
method move : offset:float * float -> unit
method move2 : offset_x:float -> offset_y:float -> unit
method set_center : center:float * float -> unit
method set_center2 : x:float -> y:float -> unit
method t : SFView.t
method zoom : factor:float -> unit