forked from: forked from: Mycelium
click to load custom image ;)
inspired by http://onecm.com/projects/mycelium/
/**
* Copyright omari ( http://wonderfl.net/user/omari )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/jTwJ
*/
// forked from dfinnecy's forked from: Mycelium
// forked from makc3d's Mycelium
// click to load custom image ;)
// inspired by http://onecm.com/projects/mycelium/
package {
import flash.display.*;
import flash.events.*;
import flash.net.FileReference;
import flash.net.URLRequest;
import flash.system.LoaderContext;
[SWF(width=465, height=465)]
public class FunctionUse extends MovieClip {
private var canvas:BitmapData;
private var walkerNum:int;
private var walkers:Vector.<Function>;
private var loader:Loader;
private var file:FileReference;
public function FunctionUse(){
// init
loader = new Loader;
loader.contentLoaderInfo.addEventListener (Event.COMPLETE, init);
loader.load (new URLRequest ("http://mensahdesign.com/isix.jpg"),
new LoaderContext (true));
}
public function init (e:Event):void {
if (canvas == null) {
canvas = new BitmapData(465,465,false, 0x000000);
addChild(new Bitmap(canvas,"auto",true));
walkerNum = 50000;
walkers = new Vector.<Function>(walkerNum, true);
runWalkers();
} else {
canvas.fillRect (canvas.rect, 0);
}
makeWalkers();
}
// private methods
private function makeWalkers():void{
var bd:BitmapData = loader.content["bitmapData"];
for (var i:int = 0; i < walkerNum; i++) {
var ix:int = 465 * Math.random ();
var iy:int = 465 * Math.random ();
walkers[i] = makeWalker(ix, iy,
(bd.getPixel (
ix * bd.width / 465.0,
iy * bd.height / 465.0)
& 0xFF00) >> 10);
}
}
private function runWalkers():void{
addEventListener(Event.ENTER_FRAME, onRun);
file = new FileReference;
file.addEventListener (Event.SELECT, onFileSelected);
file.addEventListener (Event.COMPLETE, onFileLoaded);
stage.addEventListener (MouseEvent.CLICK, loadUserImage);
}
private function loadUserImage (e:MouseEvent):void { file.browse (); }
private function onFileSelected (e:Event):void { file.load (); }
private function onFileLoaded (e:Event):void { loader.loadBytes (file.data); }
private function onImageReady (e:Event):void {
}
private function onRun(evt:Event):void {
canvas.lock ();
for (var i:int = 0; i<walkerNum; i++){
walkers[i]();
}
canvas.unlock ();
}
private function makeWalker(xp:Number=200, yp:Number=200, dieAt:int=500):Function{
var age:int = dieAt;
var x:Number = xp, y:Number = yp;
var rad:Number = Math.random();
var theta:Number = Math.random() * Math.PI * 2;
var speed:Number = 0.01 * Math.random() * 2;
if (int(Math.random() * 2) == 1){
speed *= -1;
}
return function():void{
if (age --< 1) return;
x += rad * Math.cos(theta);
y += rad * Math.sin(theta);
theta += speed
if (int(Math.random() * 100) == 1){
theta = Math.random() * Math.PI * 2;
}
if (!(x > 465 || x < 0 || y > 465 || y < 0)){
canvas.setPixel(x, y, Math.max (0x40404*age, canvas.getPixel (x, y)));
}
}
}
}
}