/* Performs a bounce-back animation to the given viewport metrics. */
private void bounce(ImmutableViewportMetrics metrics) {
stopAnimationTimer();
ImmutableViewportMetrics bounceStartMetrics = getMetrics();
if (bounceStartMetrics.fuzzyEquals(metrics)) {
setState(PanZoomState.NOTHING);
return;
}
// At this point we have already set mState to BOUNCE or ANIMATED_ZOOM, so
// getRedrawHint() is returning false. This means we can safely call
// setAnimationTarget to set the new final display port and not have it get
// clobbered by display ports from intermediate animation frames.
mTarget.setAnimationTarget(metrics);
startAnimationTimer(new BounceRunnable(bounceStartMetrics, metrics));
}
