public IEnumerator Prefab_RayScroll()
{
InstantiateFromPrefab(Vector3.forward);
Vector2 totalPanDelta = Vector2.zero;
panZoom.PanUpdated.AddListener((hpd) => totalPanDelta += hpd.PanDelta);
TestHand h = new TestHand(Handedness.Right);
Vector3 screenPoint = CameraCache.Main.ViewportToScreenPoint(new Vector3(0.5f, 0.25f, 0.5f));
yield return(h.Show(CameraCache.Main.ScreenToWorldPoint(screenPoint)));
Assert.True(PointerUtils.TryGetHandRayEndPoint(Handedness.Right, out Vector3 hitPointStart));
yield return(h.SetGesture(ArticulatedHandPose.GestureId.Pinch));
yield return(h.Move(new Vector3(0, -0.05f, 0), 10));
Assert.True(PointerUtils.TryGetHandRayEndPoint(Handedness.Right, out Vector3 hitPointEnd));
yield return(h.SetGesture(ArticulatedHandPose.GestureId.Open));
TestUtilities.AssertNotAboutEqual(hitPointStart, hitPointEnd, "ray should not stick on slate scrolling");
Assert.AreEqual(0.1, totalPanDelta.y, 0.05, "pan delta is not correct");
yield return(h.Hide());
}