ActionScript 3 AS3绘制一个简单的矩形蒙版

Posted 2021-05-23

import flash.display.Shape;

var rectMask:Shape = new Shape();
rectMask.graphics.beginFill(0xFF0000, 1);
rectMask.graphics.drawRect(0, 0, 320, 240);
rectMask.graphics.endFill();

displayObjectToBeMasked.mask = rectMask;