Circle Visualizer
Original Source from Eduardo Omine of omine.net
He has done some amazing work without using computespectrum.
package
{
import flash.display.*;
import flash.events.*;
import flash.filters.*;
import flash.geom.*;
import flash.media.*;
import flash.net.*;
import flash.text.*;
import flash.ui.*;
import flash.utils.*;
public class Main extends Sprite
{
private var channel:SoundChannel;
private var textFormat:TextFormat;
private var posY:Number;
private var level:Number;
private var gradientMatrix:Matrix;
private var posX:Number;
private var sound:Sound;
private var shaderJob:ShaderJob;
private var volume:Number;
private var loading:TextField;
private var blurFilter:BlurFilter;
private var offscreenSprite:Sprite;
private var offscreenGraphics:Graphics;
private var fadeTransform:ColorTransform;
private var angle:Number;
private var peak:Number;
private var renderBitmap:Bitmap;
private var targetX:Number;
private var targetY:Number;
private var renderColor:ColorTransform;
private var shader:Shader;
private var renderBuffer:BitmapData;
private var renderMatrix:Matrix;
private static const CENTER:Point = new Point(WIDTH * 0.5, HEIGHT * 0.5);
private static const ZERO_POINT:Point = new Point();
private static const HEX_RANGE:Number = 1.0472;
private static const WIDTH:uint = 500;
private static const HEIGHT:uint = 500;
private static const LOUDNESS:Number = 0.1;
private static const PEAK_FACTOR:Number = 2.5;
private static const IHEX_RANGE:Number = 1;
private static const TWO_PI:Number = 6.28319;
private static const MUSIC_FILE:String = "http://doorknobdesign.com/wfl/tgm.mp3";
private static const FADE_FACTOR:Number = -11.275;
private static const PEAK_DECAY:Number = 0.98;
public function Main() : void
{
if (this.stage)
{
this.init();
this.start();
}
else
{
this.addEventListener(Event.ADDED_TO_STAGE,this.init);
}
return;
}// end function
private function init(event:Event = null) : void
{
this.removeEventListener(Event.ADDED_TO_STAGE, this.init);
this.contextMenu = new ContextMenu();
this.contextMenu.hideBuiltInItems();
this.textFormat = new TextFormat();
this.textFormat.align = "center";
this.textFormat.color = 16777215;
this.textFormat.font = "_sans";
this.textFormat.size = 12;
this.loading = new TextField();
this.loading.defaultTextFormat = this.textFormat;
this.loading.autoSize = "center";
this.loading.text = "loading";
this.loading.x = CENTER.x;
this.loading.y = CENTER.y;
this.addChild(this.loading);
this.sound = new Sound(new URLRequest(MUSIC_FILE));
soundComplete();
this.level = 0;
this.peak = 0;
this.volume = 0;
return;
}// end function
private function tick(event:Event) : void
{
var _loc_3:Number = NaN;
var _loc_4:Number = NaN;
var _loc_5:Number = NaN;
var _loc_6:Number = NaN;
this.level = (this.channel.leftPeak + this.channel.rightPeak) * 0.4;
this.peak = this.peak * PEAK_DECAY;
if (this.level > this.peak)
{
this.peak = this.level;
this.targetX = Math.random() * WIDTH;
this.targetY = Math.random() * HEIGHT;
}
var _loc_2:* = this.peak * PEAK_FACTOR * 100;
this.gradientMatrix.createGradientBox(_loc_2 * 2, _loc_2 * 2, 0, -_loc_2, -_loc_2);
this.offscreenGraphics.clear();
this.offscreenGraphics.beginGradientFill("radial", [16777215, 16777215], [1, 0], [0, 255], this.gradientMatrix);
this.offscreenGraphics.drawCircle(0, 0, _loc_2);
this.offscreenGraphics.endFill();
this.renderMatrix.identity();
var _loc_9:* = getTimer() * 0.001;
this.angle = getTimer() * 0.001;
this.renderMatrix.rotate(_loc_9);
this.renderMatrix.translate(CENTER.x, CENTER.y);
this.renderColor.alphaMultiplier = this.peak;
this.renderBuffer.colorTransform(this.renderBuffer.rect, this.fadeTransform);
this.renderBuffer.draw(this.offscreenSprite, this.renderMatrix, this.renderColor, "add");
this.renderBuffer.applyFilter(this.renderBuffer, this.renderBuffer.rect, ZERO_POINT, this.blurFilter);
_loc_6 = this.peak * TWO_PI;
var _loc_7:* = int(_loc_6 * IHEX_RANGE);
if (int(_loc_6 * IHEX_RANGE) == 0)
{
_loc_3 = 1;
_loc_5 = 0;
}
if (_loc_7 == 1)
{
_loc_4 = 1;
_loc_5 = 0;
}
if (_loc_7 == 2)
{
_loc_3 = 0;
_loc_4 = 1;
}
if (_loc_7 == 3)
{
_loc_3 = 0;
_loc_5 = 1;
}
if (_loc_7 == 4)
{
_loc_4 = 0;
_loc_5 = 1;
}
if (_loc_7 == 5)
{
_loc_3 = 1;
_loc_4 = 0;
}
if (isNaN(_loc_3))
{
_loc_6 = _loc_6 - _loc_7 * HEX_RANGE;
if (_loc_7 % 2 != 0)
{
_loc_6 = HEX_RANGE - _loc_6;
}
_loc_3 = _loc_6 * IHEX_RANGE;
}
else if (isNaN(_loc_4))
{
_loc_6 = _loc_6 - _loc_7 * HEX_RANGE;
if (_loc_7 % 2 != 0)
{
_loc_6 = HEX_RANGE - _loc_6;
}
_loc_4 = _loc_6 * IHEX_RANGE;
}
else if (isNaN(_loc_5))
{
_loc_6 = _loc_6 - _loc_7 * HEX_RANGE;
if (_loc_7 % 2 != 0)
{
_loc_6 = HEX_RANGE - _loc_6;
}
_loc_5 = _loc_6 * IHEX_RANGE;
}
var _loc_8:* = (1 - this.peak) * FADE_FACTOR;
this.fadeTransform.redOffset = _loc_8 - _loc_3 * 10;
this.fadeTransform.greenOffset = _loc_8 - _loc_4 * 10;
this.fadeTransform.blueOffset = _loc_8 - _loc_5 * 10;
this.posX = this.posX + (this.targetX - this.posX) * 0.02 - 200;
// this.posY = this.posY + (this.targetY - this.posY) * 0.02;
return;
}// end function
private function soundProgress(event:ProgressEvent) : void
{
this.loading.text = String(int(100 * event.bytesLoaded / event.bytesTotal)) + "%";
return;
}// end function
private function start() : void
{
this.channel = this.sound.play(0);
this.addEventListener(Event.ENTER_FRAME, this.tick);
return;
}// end function
private function soundComplete():void
{
this.removeChild(this.loading);
this.gradientMatrix = new Matrix();
this.offscreenSprite = new Sprite();
this.offscreenGraphics = this.offscreenSprite.graphics;
this.angle = 0;
this.renderMatrix = new Matrix();
this.renderBuffer = new BitmapData(WIDTH, HEIGHT, false, 0);
this.renderBitmap = new Bitmap(this.renderBuffer);
this.addChild(this.renderBitmap);
this.renderColor = new ColorTransform();
this.fadeTransform = new ColorTransform(1, 1, 1, 1, -8, -8, -8, 0);
this.blurFilter = new BlurFilter(2, 2, 1);
this.posX = 0;
this.posY = 0;
this.targetX = 0;
this.targetY = 0;
}// end function
}
}