Use BitmapData
and beginBitmapFill
with circle like so:
var myBitmap:BitmapData;
var imgLoader:Loader = new Loader();
imgLoader.load(new URLRequest("myImage.png"));
imgLoader.contentLoaderInfo.addEventListener(Event.COMPLETE, drawImage);
function drawImage(e:Event):void
{
myBitmap = new BitmapData(imgLoader.width, imgLoader.height, false);
myBitmap.draw(imgLoader);
var circle:Sprite = new Sprite();
circle.graphics.beginBitmapFill(myBitmap, null, true);
circle.graphics.drawCircle(50,50,100);
circle.graphics.endFill();
addChild(circle);
}
For more info see beginBitmapFill()