flash on 2010-12-25

/**
 * Copyright Fumio ( http://wonderfl.net/user/Fumio )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/rKmW
 */

package {
	import flash.display.Sprite;
	import flash.display.MovieClip;
	import flash.display.Graphics;
	import flash.utils.getTimer;
	import flash.text.TextField;
	import flash.text.TextFieldAutoSize;
	import flash.text.TextFormat;
	import flash.text.TextFormatAlign;
	[SWF(width = "240",height = "180")]
	public class ComparingLocalWithMember extends Sprite {
		private const AMOUNT:uint = 5000000;
		private var my_mc:MovieClip = new MovieClip();
		private var started:uint;
		private var my_txt:TextField = new TextField();
		private var label_txt:TextField = new TextField();
		private var my_fmt:TextFormat = new TextFormat();
		public function ComparingLocalWithMember() {
			// Creating a TextField for display
			createTextField();
			// Starting test
			useLocal();
			useMember();
		}
		private function useLocal():void {
			started = getTimer();
			var _mc:MovieClip = my_mc;
			for (var i:uint = 0; i < AMOUNT; i++) {
				_mc.rotation = i;
				_mc.alpha = i / AMOUNT;
			}
			xTrace(getTimer() - started);
		}
		private function useMember():void {
			started = getTimer();
			for (var i:uint = 0; i < AMOUNT; i++) {
				my_mc.rotation = i;
				my_mc.alpha = i / AMOUNT;
			}
			xTrace(getTimer() - started);
		}
		private function createTextField():void {
			addChild(my_txt);
			addChild(label_txt);
			// my_txt.x +=  50;
			my_txt.autoSize = TextFieldAutoSize.RIGHT;
			my_fmt.align = TextFormatAlign.RIGHT;
			my_txt.defaultTextFormat = my_fmt;
			label_txt.autoSize = TextFieldAutoSize.LEFT;
			label_txt.text = "local variable:\nproperty:";
		}
		private function xTrace(n:int):void {
			my_txt.appendText(String(n) + "\n");
		}
	}
}