private static void Raycast(Canvas canvas, Camera eventCamera, Vector2 pointerPosition, List <GameObject> results)
{
// Necessary for the event system
var foundGraphics = GraphicRegistry.GetGraphicsForCanvas(canvas);
s_SortedGraphics.Clear();
for (int i = 0; i < foundGraphics.Count; ++i)
{
Graphic graphic = foundGraphics[i];
// -1 means it hasn't been processed by the canvas, which means it isn't actually drawn
if (graphic.depth == -1)
{
continue;
}
if (!RectTransformUtility.PointInRectangle(pointerPosition, graphic.rectTransform, eventCamera))
{
continue;
}
if (graphic.Raycast(pointerPosition, eventCamera))
{
s_SortedGraphics.Add(graphic);
}
}
s_SortedGraphics.Sort((g1, g2) => g2.depth.CompareTo(g1.depth));
for (int i = 0; i < s_SortedGraphics.Count; ++i)
{
results.Add(s_SortedGraphics[i].gameObject);
}
}
