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Dead Code Preservation :: Archived AS3 works from wonderfl.net

生easing

ライブラリを使わないで生でイージングを使うテスト。

sineEaseInOutメソッド
t  経過時間(フレーム)
b  初期値
c  変異値
d  トータル時間(フレーム)
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by whirlpower 10 Nov 2010
    Embed
/**
 * Copyright whirlpower ( http://wonderfl.net/user/whirlpower )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/jS3U
 */

package
{
    import flash.events.Event;
    import flash.display.Sprite;
   
    public class FlashTest extends Sprite
    {
        private var ball : Ball;
        private var count : int = 0; 
        
        public function FlashTest()
        {
            ball = new Ball();
            ball.x = 100;
            ball.y = 200;
            addChild( ball );
            
            addEventListener( Event.ENTER_FRAME, loop );
        }
        
        private function loop( e:Event ):void
        {
            ball.x = sineEaseInOut( count, 100, 300, 30 );
            count++;
        }
        
        private function sineEaseInOut(t:Number, b:Number, c:Number, d:Number):Number
        {
            return -c / 2 * (Math.cos(Math.PI * t / d) - 1) + b;
        }
    }
}

import flash.display.Sprite;

internal class Ball extends Sprite
{
    public function Ball( color:uint = 0xFF0000, radius:Number = 10 ):void
    {
        graphics.beginFill( color );
        graphics.drawCircle( 0, 0, radius );
        graphics.endFill();
    }
}