Constructor Detail

• DefaultMomentum

  public DefaultMomentum()

Method Detail

• createState

  public Momentum.State createState(Point initialPosition,
                           Point initialVelocity)

  Description copied from interface: Momentum
  Create a Momentum.State instance. The Momentum.State instance will be passed to Momentum.updateState(State) until the momentum is depleted.

  Specified by:

  createState in interface Momentum

  Parameters:

  initialPosition - the initial position

  initialVelocity - the initial velocity in pixels per millisecond

• updateState

  public boolean updateState(Momentum.State state)

  Description copied from interface: Momentum

  Update the state based on the specified Momentum.State. When no more momentum remains, this method should return false to stop future calls.

  The Momentum.State instance is created by a call to Momentum.createState(Point, Point), and the same instance if used for the duration of the momentum. This method should modify the existing state by calling Momentum.State.setPosition(Point) and/or Momentum.State.setVelocity(Point).

  Specified by:

  updateState in interface Momentum

  Parameters:

  state - the current state

  Returns:

  true to continue momentum, false if no momentum remains