/// <summary>
/// Instantiates a UITracker with and automatically sets it up.
/// </summary>
/// <param name="source">The Tracker to instantiate (normally a prefab).</param>
/// <param name="trackedObject">The object that this UITracker will track.</param>
/// <param name="optionalCanvas">An optional canvas to be used. If no canvas is provided, a new one with default settings will be created for this tracker.</param>
/// <returns></returns>
public static UITracker InstantiateTracker(UITracker source, GameObject trackedObject, Canvas canvas = null)
{
bool mustCleanupCanvas = false;
if (!canvas)
{
//Create a canvas
GameObject canvasGO = new GameObject($"{trackedObject.name}'s UI Tracking Canvas");
canvasGO.layer = LayerMask.NameToLayer("UI");
canvas = canvasGO.AddComponent <Canvas>();
mustCleanupCanvas = true;
}
canvas.renderMode = RenderMode.ScreenSpaceOverlay;
//TODO: Add a CanvasScaler. Where do we get the reference resolution from? Does it even matter?
/*
* CanvasScaler canvasScaler = canvasGO.AddComponent<CanvasScaler>();
* canvasScaler.uiScaleMode = CanvasScaler.ScaleMode.ScaleWithScreenSize;
* canvasScaler.screenMatchMode = CanvasScaler.ScreenMatchMode.MatchWidthOrHeight;
* canvasScaler.matchWidthOrHeight = 0.5f;
* canvasScaler.referenceResolution = canvasReferenceResolution;
*/
UITracker newTracker = Instantiate(source, canvas.transform);
newTracker.TrackedObject = trackedObject;
newTracker.mustCleanupCanvasOnDestroy = mustCleanupCanvas;
return(newTracker);
}
void Start()
{
Debug.Assert(uiTrackerPrefab, "UITracked must have a uiTrackerPrefab to instantiate.", this);
Tracker = UITracker.InstantiateTracker(uiTrackerPrefab, gameObject, GetCanvas());
}
private void Awake()
{
Tracker = GetComponent <UITracker>();
}