forked from: Colorful Rings
basic logic from yossy a.k.a. BeInteractive
http://www.be-interactive.org/?itemid=278
// forked from ton's Colorful Rings
// basic logic from yossy a.k.a. BeInteractive
// http://www.be-interactive.org/?itemid=278
package {
import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.display.Sprite;
import flash.events.Event;
import flash.geom.Matrix;
[SWF(width="465", height="465", backgroundColor="0xffffff", frameRate="40")]
public class KaleidoscopeLogic extends Sprite {
private var container:Sprite;
private var bmd:BitmapData;
private var base:BitmapData;
private var mtx_ul:Matrix; // Matrix positions at upper left
private var mtx_ur:Matrix; // Matrix positions at upper right
private var mtx_ll:Matrix; // Matrix positions at lower left
private var mtx_lr:Matrix; // Matrix positions at lower right
public function KaleidoscopeLogic() {
container = new Sprite();
base = new BitmapData( 465, 465, false );
mtx_ul = new Matrix();
mtx_ur = new Matrix();
mtx_ur.scale( -1, 1 );
mtx_ur.translate( 465, 0 );
mtx_ll = new Matrix();
mtx_ll.scale( 1, -1 );
mtx_ll.translate( 0, 465 );
mtx_lr = new Matrix();
mtx_lr.scale( -1, -1 );
mtx_lr.translate( 465, 465 );
addChild( new Bitmap( base ) );
addEventListener( Event.ENTER_FRAME, onEnterFrameHandler );
};
private function onEnterFrameHandler( e:Event ):void {
base.lock();
bmd = new BitmapData( 233, 233, true );
createRings( bmd );
drawBaseBitmapData( base, bmd );
bmd.dispose();
base.unlock();
};
private function createRings( src:BitmapData ):void {
var ring:Ring = new Ring( Math.random() * 90 + 10, Math.random() * 0xFFFFFF );
ring.x = Math.random() * 320;
ring.y = Math.random() * 240;
container.addChild( ring );
src.draw( container );
};
private function drawBaseBitmapData( dest:BitmapData, source:BitmapData ):void {
dest.fillRect( dest.rect, 0xFFFFFFFF );
dest.draw( source, mtx_ul );
dest.draw( source, mtx_ur );
dest.draw( source, mtx_ll );
dest.draw( source, mtx_lr );
};
};
};
import flash.display.Sprite;
import flash.events.Event;
class Ring extends Sprite {
private const DECAY:Number = 0.95;
public function Ring( size:int = 30, color:uint = 0x000000 ) {
this.graphics.clear();
this.graphics.lineStyle( Math.random() * 10, color );
this.graphics.drawCircle( 200, 200, size );
addEventListener( Event.ENTER_FRAME, onEnterFrameHandler );
};
private function onEnterFrameHandler( e:Event ):void {
this.scaleX *= DECAY;
this.scaleY *= DECAY;
if( this.scaleX <= 0.01 ) {
this.parent.removeChild( this );
removeEventListener( Event.ENTER_FRAME, onEnterFrameHandler );
}
};
};