Adapted the interpolator of the heads up appear motion

    public static final int ANIMATION_DURATION_APPEAR_DISAPPEAR = 464;

    public static final int ANIMATION_DURATION_EXPAND_CLICKED = 360;

    public static final int ANIMATION_DURATION_DIMMED_ACTIVATED = 220;

    public static final int ANIMATION_DURATION_HEADS_UP_APPEAR = 280;

    public static final int ANIMATION_DURATION_HEADS_UP_APPEAR = 650;

    public static final int ANIMATION_DURATION_HEADS_UP_DISAPPEAR = 230;

    public static final int ANIMATION_DELAY_PER_ELEMENT_INTERRUPTING = 80;

    public static final int ANIMATION_DELAY_PER_ELEMENT_EXPAND_CHILDREN = 54;

                        R.dimen.go_to_full_shade_appearing_translation);

        Path path = new Path();

        path.moveTo(0, 0);

        path.cubicTo(0.8f, 0, 0.8f, 1.2f, 1f, 1f);

        float x1 = 250f;

        float x2 = 150f;

        float x3 = 100f;

        float y1 = 90f;

        float y2 = 78f;

        float y3 = 80f;

        float xTot = (x1 + x2 + x3);

        path.cubicTo(x1 * 0.9f / xTot, 0f,

                x1 * 0.8f / xTot, y1 / y3,

                x1 / xTot , y1 / y3);

        path.cubicTo((x1 + x2 * 0.4f) / xTot, y1 / y3,

                (x1 + x2 * 0.2f) / xTot, y2 / y3,

                (x1 + x2) / xTot, y2 / y3);

        path.cubicTo((x1 + x2 + x3 * 0.4f) / xTot, y2 / y3,

                (x1 + x2 + x3 * 0.2f) / xTot, 1f,

                1f, 1f);

        mHeadsUpAppearInterpolator = new PathInterpolator(path);

    }