Gets the current velocity.
If the gesture is recognized, this function returns true and fills in velocity_x and velocity_y with the recorded velocity, as per the last events processed.
return value for the velocity in the X axis, in pixels/sec
return value for the velocity in the Y axis, in pixels/sec
whether velocity could be calculated
Gets the current velocity.
If the gesture is recognized, this function returns true and fills in velocity_x and velocity_y with the recorded velocity, as per the last events processed.