is
Checks if the angle formed between the points defined by the coordinates of the pertinent MotionEvents is indicative of a right gesture.
A right gesture is registered if the angle is in [0.75π, 1.25π).
Return
true if the angle formed between the points defined by the coordinates of the pertinent MotionEvents is indicative of a right gesture.
Parameters
angle
Angle (in radians) formed between the points defined by the coordinates of the pertinent MotionEvents.