摘要：
RectMask2D 矩形2D遮罩 A RectMask2D is a masking control similar to the Mask control. The mask restricts the child elements to the rectangle of the parent 阅读全文
摘要：
Mask 遮罩 A Mask is not a visible UI control but rather a way to modify the appearance of a control’s child elements. The mask restricts (ie, “masks”) t 阅读全文