public void get_motion_coords (uint point, out float motion_x, out float motion_y)
Retrieves the coordinates, in stage space, dependent on the current state of the PanAction.
If it is inactive, both fields will be set to 0. If it is panning by user action, the values will be equivalent to those returned by get_motion_coords. If it is interpolating with some form of kinetic scrolling, the values will be equivalent to those returned by get_interpolated_coords. This is a convenience method designed to be used in replacement "pan" signal handlers.
the touch point index, with 0 being the first touch point received by the action
return location for the X coordinate
return location for the Y coordinate