Function clutter_sys::clutter_behaviour_scale_new

pub unsafe extern "C" fn clutter_behaviour_scale_new(
    alpha: *mut ClutterAlpha, 
    x_scale_start: c_double, 
    y_scale_start: c_double, 
    x_scale_end: c_double, 
    y_scale_end: c_double
) -> *mut ClutterBehaviour