学校の課題なら、自分で勉強しないと意味ないんじゃ？

////////////////////////////////////////////////////////////////////////////////
// 学校の課題なら、自分で勉強しないと意味ないんじゃ？
// forked from nitoyon's Hello World!!! [http://wonderfl.net/c/nCFQ]
// forked from awef's flash on 2009-2-27 [http://wonderfl.net/c/tuwf]
////////////////////////////////////////////////////////////////////////////////

by ProjectNya 14 Dec 2010

• Related works: 1
Embed

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

////////////////////////////////////////////////////////////////////////////////
// 学校の課題なら、自分で勉強しないと意味ないんじゃ？
// forked from nitoyon's Hello World!!! [http://wonderfl.net/c/nCFQ]
// forked from awef's flash on 2009-2-27 [http://wonderfl.net/c/tuwf]
////////////////////////////////////////////////////////////////////////////////

package{

    import flash.display.*;
    import flash.text.*;
    import flash.filters.*;
    import flash.geom.*;
    import flash.events.*;
    import caurina.transitions.Tweener;

    public class Main extends Sprite {
        private var bd:BitmapData;
        private var circles:Array;
        private var completed:uint = 0;

        public function Main() {
            var tf:TextField = new TextField();
            tf.textColor = 0x000000;
            tf.text = "Hello\nWorld!!!";
            tf.autoSize = "left";
            bd = new BitmapData(tf.width, tf.height, false, 0x3399ff);
            bd.draw(tf);
            bd.applyFilter(bd, bd.rect, new Point(), new BlurFilter());
            bd.draw(tf);

            circles = new Array();
            for(var i:int = 0; i < bd.width; i++){
                for(var j:int = 0; j < bd.height; j++){
                    var circle:Circle = new Circle(bd.getPixel(i, j));
                    circle.dx = circle.x = i*10;
                    circle.dy = circle.y = j*10;
                    circles.push(circle);
                    Tweener.addTween(
                        randomize(addChild(circle)), 
                        {
                            x: i * 10,
                            y: j * 10,
                            alpha: 1,
                            delay: (i + j) * .2 * Math.random(),
                            time: 1,
                            onComplete: complete
                        }
                    );
                }
            }
        }
        private function randomize(d:DisplayObject):DisplayObject {
            d.x = 400 * Math.random();
            d.y = 300 * Math.random();
            d.alpha = 0;
            return d;
        }
        private function complete():void {
            completed ++;
            if (completed > bd.width*bd.height - 1) {
                addEventListener(Event.ENTER_FRAME, update, false, 0, true);
            }
        }
        private function update(evt:Event):void {
            for (var n:uint = 0; n < circles.length; n++) {
                var circle:Circle = circles[n];
                circle.run();
            }
        }

    }
}


import flash.display.Sprite;
import flash.geom.Point;

class Circle extends Sprite{

    public var dx:uint;
    public var dy:uint;
    public var r:uint = 4;
    public var s:uint = 20;
    private var c:uint = Math.round(Math.random() * 255 * 255 * 255);

    public function Circle(color:uint):void {
        graphics.beginFill(color);
        graphics.drawCircle(0, 0, 6);
        graphics.endFill();
    }

    public function run():void {
        var dist:Number = Point.distance(new Point(dx, dy), new Point(stage.mouseX, stage.mouseY));
        var p:Point = Point.polar((dist < s)? dist : s, -Math.atan2(dx - stage.mouseX, dy - stage.mouseY) - 90 * Math.PI / 180);
        x = dx + p.x;
        y = dy + p.y;
    }

}