Clipping.FindCullAndClipWorldRect

public static Rect FindCullAndClipWorldRect (List<RectMask2D> rectMaskParents, out bool validRect);

파라미터

rectMaskParents	RectMasks to build the overlap rect from.
validRect	Was there a valid Rect found.

Rect The compound Rect.

Find the Rect to use for clipping.

Given the input RectMask2ds find a rectangle that is the overlap of all the inputs.