public long topAsUint() { return Asserts.numberVariable("position.y").withValue(position.getY().longValue()).atLeast(0L); }
public void shift(float dx, float dy) { position.shift(dx, dy, worldDimension); }
public long leftAsUint() { return Asserts.numberVariable("position.x").withValue(position.getX().longValue()).atLeast(0L); }