Matrix初期化速度

これはこれはw

by zahir 31 Oct 2010

• Forked from zahir's Matrix3D初期化速度
• Diff: 38
• Related works: 1

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/**
 * Copyright zahir ( http://wonderfl.net/user/zahir )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/as9i
 */

// forked from zahir's Matrix3D初期化速度
package {
    import flash.geom.Matrix;
    import flash.events.MouseEvent;
    import flash.geom.Matrix3D;
    import flash.text.TextField;
    import flash.display.Sprite;
    import flash.utils.getTimer;
    public class FlashTest extends Sprite {
        private var t:TextField;
        public function FlashTest() {
            // write as3 code here..
            t= new TextField();
            addChild(t).width = t.height = 465;
            
            addEventListener( MouseEvent.CLICK, onClick );
            ex();
        }
        
        private function onClick( e:MouseEvent ):void
        {
            ex();
        }

        private function ex():void
        {
            var m:Matrix;
            var _m:Matrix = new Matrix();
            var i:int = 0;                                      
            var len:int = 1000000;
            var time1:int;
            var time2:int;
            var recode:Array = [];
            var count:int = 0;
            t.text = "各 " + len + " 回ループ\n\n";
            
            time1 = getTimer();
            for( i = 0; i<len; i++ )
            {
                m = new Matrix();
            }
            time2 = getTimer() - time1;
            recode[count++] = new TimeData( "new", time2, m + "" );
            
            time1 = getTimer();
            for( i = 0; i<len; i++ )
            {
                m = _m.clone();
            }
            time2 = getTimer() - time1;
            recode[count++] = new TimeData( "clone", time2, m + "" );
            
            time1 = getTimer();
            for( i = 0; i<len; i++ )
            {
                m.identity();
            }
            time2 = getTimer() - time1;
            recode[count++] = new TimeData( "identity", time2, m + "" );
            
            
            time1 = getTimer();
            for( i = 0; i<len; i++ )
            {
                m.a = m.d = 1;
                m.b = m.c = m.tx = m.ty = 0;
            }
            time2 = getTimer() - time1;
            recode[count++] = new TimeData( "manual", time2 , m + "");
            
            time1 = getTimer();
            for( i = 0; i<len; i++ )
            {
                m.a = 1;
                m.d = 1;
                m.b = 0;
                m.c = 0;
                m.tx = 0;
                m.ty = 0;
            }
            time2 = getTimer() - time1;
            recode[count++] = new TimeData( "manual_2", time2 , m + "");
            
            
            recode.sortOn( "time", Array.NUMERIC );
            var max:int = (recode[ recode.length - 1 ] as TimeData).time;
            for( i = 0, len = recode.length; i<len; i++)
            {
                var data:TimeData = recode[i] as TimeData;
                var n:int = max / data.time * 100;
                t.appendText( data.title + " :: " + data.time + " ms\n\t\t最低速に比べて約 " + n + " %高速 \n");
                if(data.ms == "") t.appendText("\n");
                else t.appendText( "\t\t" + data.ms  + "\n\n");
            }
            
            t.appendText("clickで再計算");
        }

    }
}
import flash.geom.Matrix3D;
class TimeData
{
    public var title:String;
    public var time:int;
    public var ms:String;
    public function TimeData( title:String = "", time:int = 0 , ms:String = "")
    {
        this.title = title;
        this.time = time;
        this.ms = ms;
    }
}