/// <summary>
/// Perform a Unity physics Raycast to determine which scene objects with a collider is currently being gazed at, if any.
/// </summary>
private void RaycastPhysics(PointerData pointer, LayerMask[] prioritizedLayerMasks)
{
bool isHit = false;
int rayStepIndex = 0;
RayStep rayStep = default(RayStep);
RaycastHit physicsHit = default(RaycastHit);
Debug.Assert(pointer.PointingSource.Rays != null, "No valid rays for " + pointer.GetType());
Debug.Assert(pointer.PointingSource.Rays.Length > 0, "No valid rays for " + pointer.GetType());
// Check raycast for each step in the pointing source
for (int i = 0; i < pointer.PointingSource.Rays.Length; i++)
{
if (RaycastPhysicsStep(pointer.PointingSource.Rays[i], prioritizedLayerMasks, out physicsHit))
{
// Set the pointer source's origin ray to this step
isHit = true;
rayStep = pointer.PointingSource.Rays[i];
rayStepIndex = i;
// No need to continue once we've hit something
break;
}
}
if (isHit)
{
pointer.UpdateHit(physicsHit, rayStep, rayStepIndex);
}
else
{
pointer.UpdateHit(GetPointingExtent(pointer.PointingSource));
}
}
private void RaycastUnityUI(PointerData pointer, LayerMask[] prioritizedLayerMasks)
{
Debug.Assert(pointer.End.Point != Vector3.zero, string.Format("No pointer {0} end point found to raycast against!", pointer.PointingSource.GetType()));
Debug.Assert(UIRaycastCamera != null, "You must assign a UIRaycastCamera on the FocusManager before you can process uGUI raycasting.");
RaycastResult uiRaycastResult = default(RaycastResult);
bool overridePhysicsRaycast = false;
RayStep rayStep = default(RayStep);
int rayStepIndex = 0;
Debug.Assert(pointer.PointingSource.Rays != null, "No valid rays for " + pointer.GetType());
Debug.Assert(pointer.PointingSource.Rays.Length > 0, "No valid rays for " + pointer.GetType());
// Cast rays for every step until we score a hit
for (int i = 0; i < pointer.PointingSource.Rays.Length; i++)
{
if (RaycastUnityUIStep(pointer, pointer.PointingSource.Rays[i], prioritizedLayerMasks, out overridePhysicsRaycast, out uiRaycastResult))
{
rayStepIndex = i;
rayStep = pointer.PointingSource.Rays[i];
break;
}
}
// Check if we need to overwrite the physics raycast info
if ((pointer.End.Object == null || overridePhysicsRaycast) && uiRaycastResult.isValid && uiRaycastResult.module.eventCamera == UIRaycastCamera)
{
newUiRaycastPosition.x = uiRaycastResult.screenPosition.x;
newUiRaycastPosition.y = uiRaycastResult.screenPosition.y;
newUiRaycastPosition.z = uiRaycastResult.distance;
Vector3 worldPos = UIRaycastCamera.ScreenToWorldPoint(newUiRaycastPosition);
var hitInfo = new RaycastHit
{
point = worldPos,
normal = -uiRaycastResult.gameObject.transform.forward
};
pointer.UpdateHit(uiRaycastResult, hitInfo, rayStep, rayStepIndex);
}
}