createjs mask 填坑过程

var S=this;
var shape = new createjs.Shape();
shape.graphics.f("#FF0000").s().p("AkCKYQhcifgZkAQgyjvgEjaQgDg3gpgyQgSgGgQACQgQADgQAIIiUBBQgeAOg8gwQgng6ADgyQAvhOB1ANQAzAFBZAxQBlhdBHgxQAwgtA0gXQA1g2gDg1QAdgXAMAeIBjBhQAdAVAagWIBNhxQAiglAnAdQBNAkAtAlQB9BVBABSQBUAlAfgkQCWg7AUAKQAxAKALA4QAGAdhKBFQg8BLhBAAQhAAAh2hdQAFIZgRDuIgmBwQgzB9gcATQheBNi9AZQjagLhDhDg");
shape.setTransform(87.4,84.7);

var ld = new createjs.LoadQueue(false)
ld.addEventListener("fileload", loadedF);
ld.addEventListener("complete", loadComF);
function loadedF(e)
{
if (e.item.type == "image")
{
var img = new createjs.Bitmap(e.result)
img.scaleX=175/img.image.width;
img.scaleY=175/img.image.height;
img.x=img.y=0;

S.addChild(img)
img.mask=shape

};
}
function loadComF(e)
{
}
ld.loadFile("testImg.jpg")