NinetyDegRotationTransition.java

public class NinetyDegRotationTransition implements FabulousTransition {
    private static final int MAIN_FAB_ANIMATION_DURATION = 200;

    @NotNull
    @Override
    public AnimatorSet getClosingAnimation(@NotNull View element, float destX, float destY) {
        AnimatorSet anim = new AnimatorSet();
        ObjectAnimator fabX = ObjectAnimator.ofFloat(element, View.ROTATION, 0);
        fabX.setDuration(MAIN_FAB_ANIMATION_DURATION);
        anim.play(fabX);
        return anim;
    }

    @NotNull
    @Override
    public AnimatorSet getOpeningAnimation(@NotNull View element, float destX, float destY) {
        AnimatorSet anim = new AnimatorSet();
        ObjectAnimator fabX = ObjectAnimator.ofFloat(element, View.ROTATION, 90);
        fabX.setDuration(MAIN_FAB_ANIMATION_DURATION);
        anim.play(fabX);
        return anim;
    }
}