void UpdateReticle(GameObject previousGazedObject)
{
if (gazePointer == null)
{
return;
}
eventCamera = pointerData.enterEventCamera ?? eventCamera; // Get the camera
GameObject gazeObject = GetCurrentGameObject(); // Get the gaze target
Vector3 intersectionPosition = GetIntersectionPosition();
bool isInteractive = (pointerData.pointerPress != null) ||
ExecuteEvents.GetEventHandler <IPointerClickHandler>(gazeObject) != null;
if (gazeObject == previousGazedObject)
{
if (gazeObject != null)
{
float progress = 0;
if (isInteractive && fuseState != FuseState.Triggered)
{
float delta = Time.unscaledTime - gazeStartTime;
progress = Mathf.Clamp01(delta / fuseTime);
if ((fuseState == FuseState.Arming) && (delta >= fuseTime))
{
fuseState = FuseState.Trigger;
}
}
gazePointer.OnGazeStay(eventCamera, gazeObject, intersectionPosition, progress, isInteractive);
}
}
else
{
if (previousGazedObject != null)
{
gazePointer.OnGazeExit(eventCamera, previousGazedObject);
gazeStartTime = 0;
fuseState = FuseState.Idle;
}
if (gazeObject != null)
{
gazePointer.OnGazeStart(eventCamera, gazeObject, intersectionPosition, isInteractive);
gazeStartTime = Time.unscaledTime;
GazeBehaviourModifier gbm = gazeObject.GetComponent <GazeBehaviourModifier>();
fuseTime = (gbm != null) && (gbm.fuseTimeOverride > 0) ? gbm.fuseTimeOverride : defaultFuseTime;
fuseState = FuseState.Arming;
}
}
}
private void CastRayFromGaze()
{
if (gazePointer == null)
{
return;
}
Vector2 headPose = (eventCamera == null) ? Vector2.zero : NormalizedCartesianToSpherical(eventCamera.transform.forward);
if (pointerData == null)
{
pointerData = new PointerEventData(eventSystem);
lastHeadPose = headPose;
}
// Cast a ray into the scene
pointerData.Reset();
pointerData.position = pointerPos;
eventSystem.RaycastAll(pointerData, m_RaycastResultCache);
// discard every hit too far away or too close
for (int idx = m_RaycastResultCache.Count - 1; idx >= 0; idx--)
{
RaycastResult r = m_RaycastResultCache[idx];
// what are the limits of the gaze pointer
float min, max;
gazePointer.GetDistanceLimits(out min, out max);
// consider gaze behaviour modifiers
GazeBehaviourModifier gbm = (r.gameObject != null) ? r.gameObject.GetComponent <GazeBehaviourModifier>() : null;
min = (gbm != null) && (gbm.minimumGazeRangeOverride > 0) ? gbm.minimumGazeRangeOverride : min;
max = (gbm != null) && (gbm.maximumGazeRangeOverride > 0) ? gbm.maximumGazeRangeOverride : max;
if ((r.distance > max) || (r.distance < min))
{
m_RaycastResultCache.RemoveAt(idx);
}
}
pointerData.pointerCurrentRaycast = FindFirstRaycast(m_RaycastResultCache);
m_RaycastResultCache.Clear();
pointerData.delta = headPose - lastHeadPose;
lastHeadPose = headPose;
}
