protected virtual List <RaycastResult> CheckRaycasts(VRTK4_UIPointer pointer)
{
RaycastResult raycastResult = new RaycastResult();
raycastResult.worldPosition = pointer.GetOriginPosition();
raycastResult.worldNormal = pointer.GetOriginForward();
pointer.pointerEventData.pointerCurrentRaycast = raycastResult;
VRTK4_UIGraphicRaycaster.CurrentPointer = pointer;
VRTK4_3DGraphicRaycaster.CurrentPointer = pointer;
raycasts.Clear();
eventSystem.RaycastAll(pointer.pointerEventData, raycasts);
raycasts.Sort(ComparisonInversedDistance);
if (raycasts.Count > 0)
{
var toUse = raycasts[0];
var lastKnownPosition = pointer.pointerEventData.position;
pointer.pointerEventData.position = toUse.screenPosition;
pointer.pointerEventData.delta = pointer.pointerEventData.position - lastKnownPosition;
pointer.pointerEventData.pointerCurrentRaycast = toUse;
}
VRTK4_UIGraphicRaycaster.CurrentPointer = null;
VRTK4_3DGraphicRaycaster.CurrentPointer = null;
return(raycasts);
}
/// <summary>
/// Enables to raycast event from any point towards any VRTK4_Canvas (even when outside the view)
/// </summary>
/// <param name="eventData"> currentEventData (can get cleared in consequent stages) </param>
/// <param name="resultAppendList"> actual hits on UI elements under canvases</param>
public override void Raycast(PointerEventData eventData, List <RaycastResult> resultAppendList)
{
if (CanvasToUse == null || eventCamera == null || !eventCamera.enabled)
{
return;
}
Ray ray;
if (CurrentPointer != null)
{
ray = new Ray(CurrentPointer.GetOriginPosition(), CurrentPointer.GetOriginForward());
}
else
{
ray = new Ray(eventData.pointerCurrentRaycast.worldPosition,
eventData.pointerCurrentRaycast.worldNormal);
}
s_RaycastResults.Clear();
Raycast(CanvasToUse, eventCamera, eventData, ray, ref s_RaycastResults);
AppendToListAllCurrentRaycasts(ref resultAppendList, ref s_RaycastResults);
s_RaycastResults.Clear();
}