AS3 Tree

AS3 Tree
by Duarte Peixinho
duarte.peixinho@gmail.com
page: http://duartepeixinho.com

forked:3
favorite:7
lines:124
license : All rights reserved
modified : 2009-03-04 05:15:10

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package
{
	import flash.display.Sprite;
	import flash.events.Event;
	import flash.filters.BlurFilter;
	import flash.geom.Point;
	import flash.display.Shape;
	import flash.events.MouseEvent;
	
        [SWF(width = "600", height = "400", backgroundColor = "#ffffff", frameRate = "60")]
/*
*
* AS3 Tree
* by Duarte Peixinho
* duarte.peixinho@gmail.com
* page: http://duartepeixinho.com
*
*/
	public class FlashTest extends Sprite
	{
		private var branche1:Branches;
		private var branche2:Branches;
		private var branche3:Branches;
				
		public function FlashTest():void {
			branche1 = new Branches(Math.random() * 100 + 600, 10, 5, 10, -95, 20);
			branche2 = new Branches(Math.random() * 100 + 600, 10, 5, 10, -90, 20);
			branche3 = new Branches(Math.random() * 100 + 600, 10, 5, 10, -85, 20);
			
			branche1.x = (stage.stageWidth / 2);
			branche1.y = stage.stageHeight;
			branche1.filters = [new BlurFilter(2,2)];
			addChild(branche1);
			
			branche2.x = (stage.stageWidth / 2);
			branche2.y = stage.stageHeight;
			branche2.filters = [new BlurFilter(2,2)];
			addChild(branche2);
			
			branche3.x = (stage.stageWidth / 2);
			branche3.y = stage.stageHeight;
			branche3.filters = [new BlurFilter(2,2)];
			addChild(branche3);
						
			addEventListener(Event.ENTER_FRAME, processFrame);
			stage.addEventListener(MouseEvent.CLICK, clicked);
		}
		
		private function clicked(e:MouseEvent):void {				
			removeChild(branche1);
			removeChild(branche2);
			removeChild(branche3);
			
			branche1 = new Branches(Math.random() * 100 + 600, 10, 5, 20, -95, 20);
			branche2 = new Branches(Math.random() * 100 + 600, 10, 5, 20, -90, 20);
			branche3 = new Branches(Math.random() * 100 + 600, 10, 5, 20, -85, 20);
			
			branche1.x = (stage.stageWidth / 2);
			branche1.y = stage.stageHeight;
			branche1.filters = [new BlurFilter(2,2)];
			addChild(branche1);
			
			branche2.x = (stage.stageWidth / 2);
			branche2.y = stage.stageHeight;
			branche2.filters = [new BlurFilter(2,2)];
			addChild(branche2);
			
			branche3.x = (stage.stageWidth / 2);
			branche3.y = stage.stageHeight;
			branche3.filters = [new BlurFilter(2,2)];
			addChild(branche3);
		}
		
		private function processFrame(e:Event):void {
			
			branche1.processFrame();
			branche2.processFrame();
			branche3.processFrame();
			
		}
	}
}

import flash.display.Sprite;

class Branches extends Sprite
	{
		
		
		private var angle:Number;
		private var extension:Number;
		private var thickness:int;
		private var thicknessInit:int;

private var angleInterval:Number;
		private var lineSize:Number;
		private var posX:Number = 0;
		private var posY:Number = 0;
		private var extensionComplete:Number = 0;
		
		//branches
		private var branches:Array = new Array();
		private var branchesNumber:Number = 0;
		private var actualBranches:Number = 0;
		private var i:int = 1;
		
		//lineSize calculation
		private var lineDone:Boolean = true;
		private var angleCalc:Number;
		private var posXinit:Number = 0;
		private var posYinit:Number = 0;
		
		public function Branches(extension:Number, thickness:int, branchesNumber:Number = 5, lineSize:Number = 5, angle:Number = 90, angleInterval:Number = 30 ) 
		{
			
			this.angle = angle;
			this.extension = extension;
			this.thickness = thickness;
			this.thicknessInit = thickness;
			this.angleInterval = angleInterval;
			this.lineSize = lineSize;
			this.branchesNumber = branchesNumber;
		}
		
		public function processFrame():void {
			//draw here
			if (extension>extensionComplete) {
				
				if (lineDone) {
					posXinit = posX;
					posYinit = posY;
					angleCalc = Math.random() * ((angle + angleInterval) - (angle-angleInterval)) + (angle-angleInterval);
					lineDone = false;
					
				}				
				graphics.lineStyle(thickness);
				posX += Math.cos(angleCalc * Math.PI / 180) * lineSize;			
				posY += Math.sin(angleCalc * Math.PI / 180) * lineSize;	
				extensionComplete += Math.round(Math.sqrt(Math.pow(posX - posXinit, 2) + Math.pow(posY - posYinit, 2)));
				thickness = thicknessInit - (thicknessInit * extensionComplete / extension);
				graphics.lineTo(posX, posY);
				
				if (Math.sqrt(Math.pow(lineSize, 2)) < Math.sqrt(Math.pow(posX - posXinit, 2) + Math.pow(posY - posYinit, 2))) {
					lineDone = true;
				}
			
						
			//branches
			if (actualBranches < branchesNumber) {
				//tweak numbers here to create the branches
				if (extensionComplete >= extension / branchesNumber * i) {
					branches[i - 1] = new Branches(extension/2, thickness, Math.random()*10+5, lineSize/2, Math.random()*(angle-90), 30);
					branches[i - 1].x = posX;
					branches[i - 1].y = posY;
					addChild(branches[i - 1]);
					actualBranches++;
					i++;
				}
			}
				for (var k:int = 0; k < branches.length; k++) {
					branches[k].processFrame();
				}			
			}
		}
        }

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