public override void Process()
{
raycaster.eventMask = layerMask;
foreach (var pair in _controllerData)
{
IUILaserPointer controller = pair.Key;
ControllerData data = pair.Value;
// Test if UICamera is looking at a GUI element
UpdateCameraPosition(controller);
if (data.pointerEvent == null)
{
data.pointerEvent = new LaserPointerEventData(eventSystem);
}
else
{
data.pointerEvent.Reset();
}
data.pointerEvent.controller = controller;
data.pointerEvent.delta = Vector2.zero;
data.pointerEvent.position = new Vector2(UICamera.pixelWidth * 0.5f, UICamera.pixelHeight * 0.5f);
//data.pointerEvent.scrollDelta = Vector2.zero;
// trigger a raycast
eventSystem.RaycastAll(data.pointerEvent, m_RaycastResultCache);
data.pointerEvent.pointerCurrentRaycast = FindFirstRaycast(m_RaycastResultCache);
m_RaycastResultCache.Clear();
// make sure our controller knows about the raycast result
// we add 0.01 because that is the near plane distance of our camera and we want the correct distance
if (data.pointerEvent.pointerCurrentRaycast.distance > 0.0f)
{
controller.LimitLaserDistance(data.pointerEvent.pointerCurrentRaycast.distance + 0.01f);
}
// stop if no UI element was hit
//if(pointerEvent.pointerCurrentRaycast.gameObject == null)
//return;
// Send control enter and exit events to our controller
var hitControl = data.pointerEvent.pointerCurrentRaycast.gameObject;
if (data.currentPoint != hitControl)
{
if (data.currentPoint != null)
{
controller.OnExitControl(data.currentPoint);
}
if (hitControl != null)
{
controller.OnEnterControl(hitControl);
}
}
data.currentPoint = hitControl;
// Handle enter and exit events on the GUI controlls that are hit
base.HandlePointerExitAndEnter(data.pointerEvent, data.currentPoint);
if (controller.ButtonDown())
{
ClearSelection();
data.pointerEvent.pressPosition = data.pointerEvent.position;
data.pointerEvent.pointerPressRaycast = data.pointerEvent.pointerCurrentRaycast;
data.pointerEvent.pointerPress = null;
// update current pressed if the curser is over an element
if (data.currentPoint != null)
{
data.currentPressed = data.currentPoint;
data.pointerEvent.current = data.currentPressed;
GameObject newPressed = ExecuteEvents.ExecuteHierarchy(data.currentPressed, data.pointerEvent, ExecuteEvents.pointerDownHandler);
ExecuteEvents.Execute(controller.gameObject, data.pointerEvent, ExecuteEvents.pointerDownHandler);
if (newPressed == null)
{
// some UI elements might only have click handler and not pointer down handler
newPressed = ExecuteEvents.ExecuteHierarchy(data.currentPressed, data.pointerEvent, ExecuteEvents.pointerClickHandler);
ExecuteEvents.Execute(controller.gameObject, data.pointerEvent, ExecuteEvents.pointerClickHandler);
if (newPressed != null)
{
data.currentPressed = newPressed;
}
}
else
{
data.currentPressed = newPressed;
// we want to do click on button down at same time, unlike regular mouse processing
// which does click when mouse goes up over same object it went down on
// reason to do this is head tracking might be jittery and this makes it easier to click buttons
ExecuteEvents.Execute(newPressed, data.pointerEvent, ExecuteEvents.pointerClickHandler);
ExecuteEvents.Execute(controller.gameObject, data.pointerEvent, ExecuteEvents.pointerClickHandler);
}
if (newPressed != null)
{
data.pointerEvent.pointerPress = newPressed;
data.currentPressed = newPressed;
Select(data.currentPressed);
}
ExecuteEvents.Execute(data.currentPressed, data.pointerEvent, ExecuteEvents.beginDragHandler);
ExecuteEvents.Execute(controller.gameObject, data.pointerEvent, ExecuteEvents.beginDragHandler);
data.pointerEvent.pointerDrag = data.currentPressed;
data.currentDragging = data.currentPressed;
}
}// button down end
if (controller.ButtonUp())
{
if (data.currentDragging != null)
{
data.pointerEvent.current = data.currentDragging;
ExecuteEvents.Execute(data.currentDragging, data.pointerEvent, ExecuteEvents.endDragHandler);
ExecuteEvents.Execute(controller.gameObject, data.pointerEvent, ExecuteEvents.endDragHandler);
if (data.currentPoint != null)
{
ExecuteEvents.ExecuteHierarchy(data.currentPoint, data.pointerEvent, ExecuteEvents.dropHandler);
}
data.pointerEvent.pointerDrag = null;
data.currentDragging = null;
}
if (data.currentPressed)
{
data.pointerEvent.current = data.currentPressed;
ExecuteEvents.Execute(data.currentPressed, data.pointerEvent, ExecuteEvents.pointerUpHandler);
ExecuteEvents.Execute(controller.gameObject, data.pointerEvent, ExecuteEvents.pointerUpHandler);
data.pointerEvent.rawPointerPress = null;
data.pointerEvent.pointerPress = null;
data.currentPressed = null;
}
}
// drag handling
if (data.currentDragging != null)
{
data.pointerEvent.current = data.currentPressed;
ExecuteEvents.Execute(data.currentDragging, data.pointerEvent, ExecuteEvents.dragHandler);
ExecuteEvents.Execute(controller.gameObject, data.pointerEvent, ExecuteEvents.dragHandler);
}
// update selected element for keyboard focus
if (base.eventSystem.currentSelectedGameObject != null)
{
data.pointerEvent.current = eventSystem.currentSelectedGameObject;
ExecuteEvents.Execute(eventSystem.currentSelectedGameObject, GetBaseEventData(), ExecuteEvents.updateSelectedHandler);
//ExecuteEvents.Execute(controller.gameObject, GetBaseEventData(), ExecuteEvents.updateSelectedHandler);
}
}
}
// walk up the tree till a common root between the last entered and the current entered is foung
// send exit events up to (but not inluding) the common root. Then send enter events up to
// (but not including the common root).
protected new void HandlePointerExitAndEnter(PointerEventData currentPointerData, GameObject newEnterTarget, IUILaserPointer controller)
{
// if we have no target / pointerEnter has been deleted
// just send exit events to anything we are tracking
// then exit
if (newEnterTarget == null || currentPointerData.pointerEnter == null)
{
for (var i = 0; i < currentPointerData.hovered.Count; ++i)
{
ExecuteEvents.Execute(currentPointerData.hovered[i], currentPointerData, ExecuteEvents.pointerExitHandler);
controller.OnExitControl(currentPointerData.hovered[i]);
}
currentPointerData.hovered.Clear();
if (newEnterTarget == null)
{
currentPointerData.pointerEnter = newEnterTarget;
return;
}
}
// if we have not changed hover target
if (currentPointerData.pointerEnter == newEnterTarget && newEnterTarget)
{
return;
}
GameObject commonRoot = FindCommonRoot(currentPointerData.pointerEnter, newEnterTarget);
// and we already an entered object from last time
if (currentPointerData.pointerEnter != null)
{
// send exit handler call to all elements in the chain
// until we reach the new target, or null!
Transform t = currentPointerData.pointerEnter.transform;
while (t != null)
{
// if we reach the common root break out!
if (commonRoot != null && commonRoot.transform == t)
{
break;
}
ExecuteEvents.Execute(t.gameObject, currentPointerData, ExecuteEvents.pointerExitHandler);
controller.OnExitControl(t.gameObject);
currentPointerData.hovered.Remove(t.gameObject);
t = t.parent;
}
}
// now issue the enter call up to but not including the common root
currentPointerData.pointerEnter = newEnterTarget;
if (newEnterTarget != null)
{
Transform t = newEnterTarget.transform;
while (t != null && t.gameObject != commonRoot)
{
ExecuteEvents.Execute(t.gameObject, currentPointerData, ExecuteEvents.pointerEnterHandler);
controller.OnEnterControl(t.gameObject);
currentPointerData.hovered.Add(t.gameObject);
t = t.parent;
}
}
}