actionscript microcosmos

Visualising soundwaves with actionscript3 is pure fun. Inspired by an demo Joa Ebert released on the last flashforum conference in germany, i decided to build my own little sound-visualising demo, called “the brightWhite experience”.
Premium supported on getting some free sounds created by Philipp Weigl, i tought up some nice little effects for that visualiser, that react, interact or just feature the sound. It took me a bit to motivate my old scripting buddy thorsten werner, the guy behind rgblaster, to contribute some of his great as3-experiments too. The end result was a nice little flashdemo for sound-visualisation via compute spectrum.

Want a little snippet?

///////////////////////////////////
// analyse sound spectrum
///////////////////////////////////

getByte = 0;

SoundMixer.computeSpectrum(byteArr, true);

var i:int;
var w:uint = 2;
var num = undefined;
var type:String = undefined;

for (i=0; i<512; i+=w) {

var getByte:Number = byteArr.readFloat();
var n:Number = Math.floor(getByte * 100);

////////////////////////
// catch massiv amp
////////////////////////

if (i > 256 && n > 20) {

type = “massiv”;

}

}

paintTunnelizer(type);

///////////////////////////////////
// paint some effects
///////////////////////////////////

function paintTunnelizer(type:String) {

zIndex1++;
modulo++;

var mc:MovieClip = new MovieClip();
mc.name = “circle__” + String(zIndex1);
mc.x = 200;
mc.y = 200;
stage.addChild(mc);

if (modulo==2) {

modulo=0;

mc.graphics.lineStyle(5,0×000033,.1);
mc.graphics.drawCircle(0,0,50);

} else {

if (type == “massiv”) {

mc.graphics.lineStyle(5,0xffffff,5);
mc.graphics.drawCircle(0,0,50);

} else {

mc.graphics.lineStyle(5,0xffffff,.3);
mc.graphics.drawCircle(0,0,50);

}

}

dot0 = stage.getChildAt(1);

var getDotX:Number = Number(dot0.x);
var getDotY:Number = Number(dot0.y);

mc.x = getDotX;
mc.y = getDotY;

mc.sc = 1;
mc.alpha = 0.1;

for (var i:Number = 3; i < stage.numChildren; i++) {

var p = stage.getChildAt(i);

if (p.name.indexOf("circle__",0) != -1) {

var p1 = stage.getChildAt(i);

if (!tSwitch) {

p1.sc *= 1.2;

} else {

p1.sc *= .9;

}

p1.scaleX = p1.sc;
p1.scaleY = p1.sc;

p1.alpha+=.02;

if (type == "massiv") {

if (!tSwitch) {

tSwitch = true;

} else {

tSwitch = false;

}

}

if (p1.scaleX > 7) {
stage.removeChild(p1);
}
}

}

}

See that snippet in action

Posted in: Actionscript3 by frank reitberger /