/**
* Copyright jamasian ( http://wonderfl.net/user/jamasian )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/eUyA
*/
/*
_ _
| | (_)
| | __ _ _ __ ___ __ _ ___ _ __ _ _ __
_ | |/ _` | '_ ` _ \ / _` / __| |/ _` | '_ \
| |__| | (_| | | | | | | (_| \__ \ | (_| | | | |
\____/ \__,_|_| |_| |_|\__,_|___/_|\__,_|_| |_|
Copyright 2010, Kaiyi Chan
*/
package
{
import flash.geom.Matrix;
import flash.text.TextField;
import flash.system.LoaderContext;
import flash.net.URLRequest;
import flash.events.*;
import flash.display.*;
import flash.geom.Point;
import flash.geom.Rectangle;
public class pixel extends Sprite
{
/*---------- VARIABLES ----------*/
public var bmd:BitmapData;
public var bm:Bitmap;
public var debug:TextField;
public var MOUSEDOWN:Boolean=false;
public var getPixel:Array=new Array();
public var COLOR:uint = Math.random()*0xCCCCCC;
public var loaderA:Loader;
public var loaderB:Loader;
public var URL:String;
public var centerX:Number=465/2;
public var centerY:Number=465/2;
public var rotateOn:Boolean=false;
public function pixel()
{
debug = mainframe();
URL = "http://www.sydneyobservatory.com.au/blog/wp-content/uploads/2007/06/milky-way-map_atlas-of-the-universe.jpg";
//onManualRun();
onAutoRun();
}
private function onManualRun():void
{
bmd = new BitmapData(465, 465-75, false, 0);
bm = new Bitmap(bmd);
addChild(bm);
onRun();
}
private function onAutoRun():void
{
loaderA = new Loader();
loaderA.contentLoaderInfo.addEventListener(Event.INIT, initHandler);
loaderA.contentLoaderInfo.addEventListener(IOErrorEvent.IO_ERROR, function():void { debug.text="ERROR HAS OCCURED."; } );
loaderA.load(new URLRequest(URL), new LoaderContext(true));
}
private function initHandler(event:Event):void
{
loaderB = new Loader();
loaderB.contentLoaderInfo.addEventListener(Event.INIT, init);
loaderB.loadBytes(loaderA.contentLoaderInfo.bytes);
}
private function init(event:Event):void
{
var loader:Loader = event.currentTarget.loader;
bmd = new BitmapData(465, 465-75, false, 0x0);
var matrix:Matrix = new Matrix();
matrix.scale((200/loader.width), ((200)/loader.height));
matrix.tx=bmd.width/4;
matrix.ty=bmd.height/4;
bmd.draw(loader, matrix);
centerX=bmd.width/2.2;
centerY=bmd.height/2;
if (bm) removeChild(bm);
bm = new Bitmap(bmd);
addChild(bm);
loaderA.contentLoaderInfo.removeEventListener(Event.INIT, initHandler);
loaderB.contentLoaderInfo.removeEventListener(Event.INIT, init);
onRun();
}
public function onRun():void
{
stage.addEventListener(Event.ENTER_FRAME, update);
stage.addEventListener(KeyboardEvent.KEY_DOWN, function(e:KeyboardEvent):void {if(e.keyCode==32) { COLOR = Math.random()*0xCCCCCC}});
stage.addEventListener(MouseEvent.MOUSE_DOWN, function():void{MOUSEDOWN=true;});
stage.addEventListener(MouseEvent.MOUSE_UP, function():void{MOUSEDOWN=false;});
}
private function update(e:Event):void
{
debug.text = "count dots: " + countDots() +"\n"+"colorMode: "+COLOR+"\ncenterX:"+centerX+" centerY: "+centerY;
if (MOUSEDOWN) { bmd.fillRect(new Rectangle(mouseX-10, mouseY-10, 20, 20),COLOR); }
var amount:int = countDots();
if (amount > 20000) {
var rx:Number; var ry:Number; var ru:Number;
while (amount>20000)
{
rx=Math.random()*stage.width;
ry=Math.random()*stage.width;
ru=bmd.getPixel(rx, ry);
if (ru != 0 && ru <=0x300000) {
bmd.setPixel(rx, ry, 0);
amount--;
}
}
}
if (mouseX > 0 && mouseY > 0)
{
centerX=mouseX;
centerY=mouseY;
}
if (rotateOn)
{
if (Math.random()>.1) rotate(bm, 1, centerX, centerY);
}
bmd.lock();
for (var x:int=stage.width; x>=0; x--)
{
for (var y:int=stage.height; y>=0; y--)
{
if (this.bmd.getPixel(x, y) > 0x300000)
{
var posX:Number=x;
var posY:Number=y;
var rnd:Number = (Math.random()>.5)? Math.random() : -Math.random();
var vecX:Number = (posX - centerX);
var vecY:Number = (posY - centerY);
var r:Number = Math.sqrt( vecX * vecX + vecY * vecY );
var angle:Number = Math.atan2( vecY, vecX ) * 180 / Math.PI;
var vecX2:Number = Math.cos( (angle + 2) * Math.PI / 180 ) * r;
var vecY2:Number = Math.sin( (angle + 2) * Math.PI / 180 ) * r;
var getX:Number; var getY:Number;
vecX = (vecX2 - vecX);
vecY = (vecY2 - vecY);
r = Math.sqrt( vecX * vecX + vecY * vecY );
vecX /= r;
vecY /= r;
posX += (vecX * 1.7 + rnd*2);
posY += (vecY * 1.7 + rnd*2);
getX=posX; getY=posY;
if (getX > 1 && getY > 1 && getX < stage.width-1 && getY < stage.height-1)
{
if (bmd.getPixel(getX, getY) == 0)
{
bmd.setPixel(getX, getY, bmd.getPixel(x, y));
bmd.setPixel(x, y, 0);
}
}
}
/*
//if (bmd.getPixel(x, y) != COLOR) bmd.setPixel(x, y, COLOR);
var pwr:int = 2;
var dir:int = (Math.atan2(mouseY-y, mouseX-x)*180/Math.PI);// + 95;
var angle:int= dir*Math.PI/180;
var getX:int = x- Math.cos(angle)*pwr;
var getY:int = y- Math.sin(angle)*pwr;
//getX += (Math.random() > .5)? (Math.random()*pwr) : -(Math.random()*pwr);
//getY += (Math.random() > .5)? (Math.random()*pwr) : -(Math.random()*pwr);
getX+=Math.random()*pwr;
getY+=Math.random()*pwr;
if (getX > 1 && getY > 1 && getX < stage.width-1 && getY < stage.height-1)
{
if (bmd.getPixel(getX, getY) == 0)
{
bmd.setPixel(getX, getY, bmd.getPixel(x, y));
bmd.setPixel(x, y, 0);
}
}
*/
}
}
bmd.unlock();
}
public function rotate(ob:*, angleDegrees:int, x:int, y:int):void
{
var m:Matrix=ob.transform.matrix;
m.tx -= x;
m.ty -= y;
m.rotate (angleDegrees*(Math.PI/180));
m.tx += x;
m.ty += y;
ob.transform.matrix=m;
}
private function countDots():int
{
var value:int;
for (var x:int=0; x<=this.bmd.width; x++)
{
for (var y:int=this.bmd.height-1; y>=0;--y)
{
if (this.bmd.getPixel(x, y) != 0x0)
{
value+=1;
}
}
}
return value;
}
private function mainframe():TextField
{
/*
creates a textfield for debugging (mainframe).
*/
var mainframe:TextField = new TextField();
mainframe.x = 0;
mainframe.y = 390;
mainframe.width = stage.stageWidth;
mainframe.height = 75;
mainframe.textColor = 0xFFFFFF;
mainframe.background = true;
mainframe.backgroundColor = 0x111111;
mainframe.borderColor=0xFFFFFF;
mainframe.border=true;
mainframe.mouseEnabled=false;
addChild(mainframe);
return mainframe;
}
private function _random(_int:int=1):int { return (Math.random()>=.5)? Math.random()*_int : Math.random()*-_int; }
}
}
