draw circle in a new layer actionscript?

i do not want to draw a circle on the same layer the background is. So how can i sepa开发者_运维问答rate background layer and drawing layer?

using graphics.drawCircle to draw circle

1. Create two Sprites or MovieClips within your MovieClip.
2. Apply beginFill, drawCircle, endFill to them.
3. addChild to them relative to their layer

For example :

var player:Sprite = new Sprite()
player.graphics.beginFill(0x111111);
player.graphics.drawCircle(0, 0, 20);
player.graphics.endFill();

var background:Sprite = new Sprite()
background.graphics.beginFill(0x111111);
background.graphics.drawCircle(0, 0, 50);
background.graphics.endFill();


addChild(background);
addChild(player);