/// <summary>
/// Override base behavior to align the cursor with the finger, else perform normal cursor transformations.
/// </summary>
protected override void UpdateCursorTransform()
{
IMixedRealityNearPointer nearPointer = (IMixedRealityNearPointer)Pointer;
// When the pointer has a IMixedRealityNearPointer interface we don't call base.UpdateCursorTransform because we handle
// cursor transformation a bit differently.
if (nearPointer != null)
{
float deltaTime = UseUnscaledTime
? Time.unscaledDeltaTime
: Time.deltaTime;
Vector3 indexFingerPosition;
Quaternion indexFingerRotation;
// If we are unable to get the hand joint default to the Near Pointer's position and rotation
if (!TryGetJoint(TrackedHandJoint.IndexTip, out indexFingerPosition, out indexFingerRotation))
{
indexFingerPosition = Pointer.Position;
indexFingerRotation = Pointer.Rotation;
}
Vector3 indexKnucklePosition;
// If we are unable to get the hand joint default to the Near Pointer's position
if (!TryGetJoint(TrackedHandJoint.IndexKnuckle, out indexKnucklePosition, out _)) // knuckle rotation not used
{
indexKnucklePosition = Pointer.Position;
}
float distance = float.MaxValue;
Vector3 surfaceNormal = Vector3.zero;
bool surfaceNormalFound = false;
bool showVisual = true;
bool nearPokeable = nearPointer.IsNearObject;
// Show the cursor if we are deemed to be near an object or if it is near a grabbable object
if (nearPokeable)
{
// If the pointer is near an object translate the primary ring to the index finger tip and rotate to surface normal if close.
// The secondary ring should be hidden.
if (!nearPointer.TryGetDistanceToNearestSurface(out distance))
{
distance = float.MaxValue;
}
surfaceNormalFound = nearPointer.TryGetNormalToNearestSurface(out surfaceNormal);
}
else
{
// If the pointer is near a grabbable object position and rotate the ring to the default,
// else hide it.
bool nearGrabbable = checkForGrabbables && IsNearGrabbableObject();
// There is no good way to get the distance of the nearest grabbable object at the moment, so we either return the MinVisibleRingDistance or 1 (invisible).
distance = nearGrabbable ? MinVisibleRingDistance : 1.0f;
// Only show the visual if we are near a grabbable
showVisual = nearGrabbable;
surfaceNormalFound = false;
}
if (indexFingerRingRenderer != null)
{
TranslateToFinger(indexFingerRingRenderer.transform, deltaTime, indexFingerPosition, indexKnucklePosition);
if ((distance < alignWithSurfaceDistance) && surfaceNormalFound)
{
RotateToSurfaceNormal(indexFingerRingRenderer.transform, surfaceNormal, indexFingerRotation, distance);
TranslateFromTipToPad(indexFingerRingRenderer.transform, indexFingerPosition, indexKnucklePosition, surfaceNormal, distance);
}
else
{
RotateToFinger(indexFingerRingRenderer.transform, deltaTime, indexFingerRotation);
}
UpdateVisuals(indexFingerRingRenderer, distance, showVisual);
}
}
else
{
base.UpdateCursorTransform();
}
}
/// <summary>
/// Override base behavior to align the cursor with the finger, else perform normal cursor transformations.
/// </summary>
protected override void UpdateCursorTransform()
{
IMixedRealityNearPointer nearPointer = (IMixedRealityNearPointer)Pointer;
// When the pointer has a IMixedRealityNearPointer interface we don't call base.UpdateCursorTransform because we handle
// cursor transformation a bit differently.
if (nearPointer != null)
{
float deltaTime = UseUnscaledTime
? Time.unscaledDeltaTime
: Time.deltaTime;
Vector3 indexFingerPosition;
Quaternion indexFingerRotation;
if (!TryGetJoint(TrackedHandJoint.IndexTip, out indexFingerPosition, out indexFingerRotation))
{
indexFingerPosition = transform.position;
indexFingerRotation = transform.rotation;
}
Vector3 indexKnucklePosition;
if (!TryGetJoint(TrackedHandJoint.IndexKnuckle, out indexKnucklePosition, out _)) // knuckle rotation not used
{
indexKnucklePosition = transform.position;
}
if (nearPointer.IsNearObject)
{
// If the pointer is near an object translate the primary ring to the index finger tip and rotate to surface normal if close.
// The secondary ring should be hidden.
float distance;
if (!nearPointer.TryGetDistanceToNearestSurface(out distance))
{
distance = float.MaxValue;
}
if (indexFingerRingRenderer != null)
{
TranslateToFinger(indexFingerRingRenderer.transform, deltaTime, indexFingerPosition, indexKnucklePosition);
Vector3 surfaceNormal;
if ((distance < alignWithSurfaceDistance) &&
nearPointer.TryGetNormalToNearestSurface(out surfaceNormal))
{
RotateToSurfaceNormal(indexFingerRingRenderer.transform, surfaceNormal, indexFingerRotation, distance);
}
else
{
RotateToFinger(indexFingerRingRenderer.transform, deltaTime, indexFingerRotation);
}
UpdateVisuals(indexFingerRingRenderer, distance, true);
}
}
else
{
// If the pointer is near a grabbable object position and rotate the ring to the default,
// else hide it.
float distance = 0;
bool nearGrabbable = checkForGrabbables && IsNearGrabbableObject(out distance);
if (indexFingerRingRenderer != null)
{
TranslateToFinger(indexFingerRingRenderer.transform, deltaTime, indexFingerPosition, indexKnucklePosition);
RotateToFinger(indexFingerRingRenderer.transform, deltaTime, indexFingerRotation);
UpdateVisuals(indexFingerRingRenderer, distance, nearGrabbable);
}
}
}
else
{
base.UpdateCursorTransform();
}
}