x, y = map(lambda i : numpy.clip(i, 0, DEFAULT_HAND_DISTANCE_RANGE * 2), [x, y])
x = x * (self.pygameScreenWidth / (2. * DEFAULT_HAND_DISTANCE_RANGE))
y = y * (self.pygameScreenHeight / (2. * DEFAULT_HAND_DISTANCE_RANGE))
x, y = map(lambda i : numpy.clip(i, 0, DEFAULT_HAND_DISTANCE_RANGE * 2), [x, y])
x = x * (self.pygameScreenWidth / (2. * DEFAULT_HAND_DISTANCE_RANGE))
y = y * (self.pygameScreenHeight / (2. * DEFAULT_HAND_DISTANCE_RANGE))