flash on 2010-6-3

by termat 02 Jun 2010

Embed

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

package
{
	import flash.display.Sprite;
	import flash.events.Event;

	[SWF(width = "480", height = "480", backgroundColor = "0x000000", fps = "30")] 
	public class Practice73 extends Sprite{
		
		private var list:Array;
		private var color:uint = 0;
		
		public function Practice73() {
			list = new Array();
			var prev:Ball = null;
			for (var i:int = 0; i< 40; i++) {
				var b:Ball = new Ball(8, getColor((9*color++) % 360,1.0));
				if (prev != null) {
					prev.next = b;
				}
				b.prev = prev;
				list.push(b);
				addChild(b);
				prev = b;
			}
			addEventListener(Event.ENTER_FRAME, update);
		}
		
		private function update(e:Event):void {
			graphics.clear();
			for (var i:int = 0; i < list.length; i++) list[i].move(mouseX, mouseY);
			for (i = 0; i < list.length; i++) {
				list[i].update();
				if (list[i].prev != null) {
					graphics.lineStyle(0.1, 0x330000ff);
					graphics.moveTo(list[i - 1].x, list[i - 1].y);
					graphics.lineTo(list[i].x, list[i].y);
				}
			}
		}
		
		private function getColor(i:int, saturation:Number):uint {
			var h:Number = i / 60;
			var ii:Number = Math.floor(h);
			var ff:Number = h - ii;
			var p1:Number = (1.0 - saturation);
			var p2:Number = (1.0 - saturation * ff);
			var p3:Number = (1.0 - saturation * (1.0 - ff));
			var rv:Number, gv:Number, bv:Number;
			switch(ii) {
			case 0:
				rv = 1.0, gv = p3, bv = p1;
				break;
			case 1:
				rv = p2, gv = 1.0, bv = p1;
				break;
			case 2:
				rv = p1, gv = 1.0, bv = p3;
				break;
			case 3:
				rv = p1, gv = p2, bv = 1.0;
				break;
			case 4:
				rv = p3, gv = p1, bv = 1.0;
				break;
			default:
				rv = 1.0, gv = p1, bv = p2;
			}
			var color:uint = (Math.max(0, Math.min(255, rv * 255)) << 16) + (Math.max(0, Math.min(255, gv * 255)) << 8) + Math.max(0, Math.min(255, bv * 255));
			return color;
		}
	}
}
import flash.display.Sprite;
class Ball extends Sprite {
	public var prev:Ball=null;
	public var next:Ball=null;
	public var size:int;
	public var color:uint;
	private var vx:Number=0;
	private var vy:Number=0
	
	public function Ball(s:int, c:uint) {
		size = s;
		color = c;
		graphics.beginFill(color);
		graphics.drawCircle(0, 0, s);
	}
	
	public function move(mx:Number, my:Number):void {
		if (prev != null) {
			vx += (prev.x - x) / 35.0;
			vy += (prev.y - y) / 35.0;
		}else {
			vx += (mx - x) / 35.0;
			vy += (my - y) / 35.0;
		}
		if (next != null) {
			vx += (next.x - x) / 40.0;
			vy += (next.y - y) / 40.0;
		}
	}
	
	public function update():void {
		x += vx;
		y += vy;
	}
}