[最適化 Tips] SpriteとMovieClipってそんなに変わるの?
/**
* Copyright clockmaker ( http://wonderfl.net/user/clockmaker )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/6GrF
*/
// forked from muta244's [最適化 Tips] 変数名の長さによる処理速度の違い
package {
import flash.display.*;
import flash.events.*;
import flash.text.*;
import flash.utils.*;
import flash.system.*;
public class Main extends Sprite
{
static private const _NUM_TIMES:uint = 5000;
private var wrap:Sprite;
private function _init():void
{
while(wrap.numChildren) wrap.removeChildAt(0);
_debug(
"各テスト " + _NUM_TIMES + " 回処理させた計算結果 [単位 : ミリ秒]\n" +
"(誤差は多少生じます)\n"
);
var old:int = System.totalMemory;
_measure("Sprite", function ():void
{
for (var i:uint = 0; i < _NUM_TIMES; i++) {
var sp:Sprite = new Sprite();
wrap.addChild(sp)
}
});
_debug("(Spriteのメモリ使用量 : " + int((System.totalMemory - old)/1000) + "KB");
while(wrap.numChildren) wrap.removeChildAt(0);
System.gc();
_debug("")
var old1:int = System.totalMemory;
_measure("MovieClip", function ():void
{
for (var i:uint = 0; i < _NUM_TIMES; i++) {
var mc:MovieClip = new MovieClip();
wrap.addChild(mc)
}
});
_debug("(MovieClipのメモリ使用量 : " + int((System.totalMemory - old1)/1000) + "KB");
_debug("\n結果については言及しませんので, 各自ご判断ください.");
}
private var _field:TextField;
private var _time:uint;
public function Main():void
{
_setup();
_init();
}
private function _measure(title:String, func:Function, ...params):void
{
_time = getTimer();
func.apply(null, params);
_time = getTimer() - _time;
_debug("[ " + title + " ] --> " + _time + " ms");
}
private function _debug(log:String):void
{
_field.appendText(log + "\n");
}
private function _setup():void
{
wrap = new Sprite
addChild(wrap)
_field = new TextField();
_field.width = stage.stageWidth - 40;
_field.height = stage.stageHeight - 60;
_field.x = 20;
_field.y = 60;
var format:TextFormat = _field.defaultTextFormat;
format.font = "_sans";
_field.defaultTextFormat = format;
addChild(_field);
var button:Sprite = new Sprite();
button.graphics.lineStyle(1, 0xBBBBBB);
button.graphics.beginFill(0xEEEEEE);
button.graphics.drawRoundRect(0, 0, 100, 20, 5, 5);
button.graphics.endFill();
addChild(button);
button.x = 20;
button.y = 20;
button.mouseChildren = false;
button.buttonMode = true;
var field:TextField = new TextField();
field.width = 100;
field.height = 20;
field.htmlText = "<p align='center'><font face='_sans'>再計算</span></p>";
button.addChild(field);
button.addEventListener(MouseEvent.CLICK, function ():void
{
_field.text = "";
_init();
});
}
}
}