flash on 2009-7-27

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標準ライブラリ
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by hacker_ns 27 Jul 2009

Tags

sinus wave wind
Embed

package {
/*---------------------------------------------------------------------------------------------*/
	//標準ライブラリ
	import flash.display.*;
	import flash.events.*;
/*---------------------------------------------------------------------------------------------*/	
	public class Main extends Sprite {
		private var sin:Array = [];
		/*-------------------------------------------------------------------------------------*/
		public function Main() {
			//ステージの設定
			stage.align	= StageAlign.TOP_LEFT;
			stage.quality	= StageQuality.HIGH;
			stage.scaleMode	= StageScaleMode.NO_SCALE;
			//set event listener added to stage
			this.addEventListener(Event.ADDED_TO_STAGE, initialize);
		} /* constructor */
		/*-------------------------------------------------------------------------------------*/
		private function initialize(event:Event):void {
			//イベントリスナの消去
			this.removeEventListener(Event.ADDED_TO_STAGE, initialize);
			//
			var sprite:Sprite = new Sprite();
			this.addChild(sprite);
			//変数の定義
			var i:int = 0;
			var x:Number = 0;
			var y:Number = 0;
			var r:Number = 0;
			var z:Number = 0;
			//sinの値を配列に格納
			var sin:Array = new Array();
			for (i=0; i<72; i++) {
				sin[i] = 40 * Math.sin(i * Math.PI / 36);
			} /* for */
			
			this.addEventListener(Event.ENTER_FRAME, function():void {
				sprite.graphics.clear();
				sprite.graphics.lineStyle(0, 0x000000, 100);
				for (x=i=0; i < 73; i++) {
					sprite.graphics.moveTo(x, 100 + y);
					x += 20;
					if ((z=i+r)>71) {
						z -= 72;
						if (z>71) {
							z = 0;
						}
					}
					y = sin[z];
					sprite.graphics.lineTo(x, 100 + y);
				}
				(r++==72) && (r=0);
			});
		} /* function initialized */
		/*-------------------------------------------------------------------------------------*/
	} /* class Main */
/*---------------------------------------------------------------------------------------------*/
} /* package */