Arbitrary formula player
you can edit the top textarea, bottom one is for error messages. sorry about the funny syntax, too lazy to hook it up to ESC...
compiler from http://github.com/aemoncannon/las3r
/**
* Copyright yonatan ( http://wonderfl.net/user/yonatan )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/fS96
*/
// forked from Quasimondo's Math Music Incubator
// forked from Quasimondo's forked from: Math Music
// forked from Saqoosha's Math Music
package {
import flash.desktop.ClipboardFormats;
import flash.desktop.Clipboard;
import com.bit101.components.Component;
import com.bit101.components.PushButton;
import com.bit101.components.HSlider;
import com.bit101.components.VBox;
import com.bit101.components.TextArea;
import flash.media.Sound;
import flash.media.SoundChannel;
import flash.display.*;
import flash.events.*;
import flash.utils.*;
import flash.net.*;
import flash.system.*;
[SWF(backgroundColor="0x000000", frameRate="30", width="475", height="475")]
public class MathMusicIncubator extends Sprite {
private var _sound:Sound;
private var _channel:SoundChannel;
private var _t:Number = -1;
private var _type:int = -1;
private var _image:BitmapData;
private var _px:int = 0;
private var _py:int = 0;
private var _control:Component;
private var _formula:TextArea, _output:TextArea;
public static var audioGen:Function = function(t:Number):Number { return 0; }
public function MathMusicIncubator() {
//loaderInfo.uncaughtErrorEvents.addEventListener(UncaughtErrorEvent.UNCAUGHT_ERROR, onUncaughtError);
_image = new BitmapData(256, 256, false, 0x0);
var b:Bitmap = addChild(new Bitmap(_image)) as Bitmap;
b.width = b.height = 475;
var vbox:VBox = new VBox(this, 5, 5);
_formula = new TextArea( vbox );
_formula.textField.addEventListener(Event.CHANGE, _onChange);
var _copy_btn:PushButton = new PushButton( vbox, 3,3,"Copy to Clipboard",_copyToClipboard );
_output = new TextArea( vbox );
_control = vbox;
_control.scaleX = _control.scaleY = 2;
var vb2:VBox = new VBox(this, 415, 5);
function handler(i:int):Function { return function(e:*):void { _formula.text = presets[i]; _onChange(null) }; }
for(var i:int=0; i<presets.length; i++) (new PushButton(vb2, 0, 0, String(i), handler(i))).setSize(50, 20);
_sound = new Sound();
_sound.addEventListener(SampleDataEvent.SAMPLE_DATA, _onSampleData);
stage.addEventListener(MouseEvent.MOUSE_MOVE, function(e:*):void { _control.visible = vb2.visible = true; });
stage.addEventListener(Event.MOUSE_LEAVE, function(e:*):void { _control.visible = vb2.visible = false; });
loadLas3rSwf(initCompiler);
}
private function _copyToClipboard( event:Event ):void {
Clipboard.generalClipboard.setData( ClipboardFormats.TEXT_FORMAT, _formula.text);
}
private function _play():void {
_t = 0;
_px = 0;
_py = 0;
_image.fillRect(_image.rect, 0x0);
if (_channel) _channel.stop();
_channel = _sound.play();
}
private function _onSampleData(e:SampleDataEvent):void {
var i:int, t:Number, tt:int, val:Number;
_image.lock();
for (i = 0; i < 8192; i++, _t++) {
t = (_t / 44100);
try { val = audioGen(t); } catch(e:*) { _output.text = String(e); if (_channel) _channel.stop(); break; };
tt = val * 0x7f + 0x80;
e.data.writeFloat(val);
e.data.writeFloat(val);
_image.setPixel(_px, _py, tt << 16 | tt << 8 | tt);
if (++_px == _image.width) {
_px = 0;
if (++_py == _image.height) {
_py = 0;
}
}
}
_image.unlock();
}
private function _onChange(e:Event):void {
if (_channel) _channel.stop();
repl.rt.evalStr(_formula.text,
function(fn:*):void { audioGen = fn; _output.text = ""; _play(); },
null,
function(v:*):void { _output.text = String(v); });
_t = 0;
}
private function loadLas3rSwf(completeHandler:Function):void {
Security.loadPolicyFile("http://zozuar.org/wonderfl/crossdomain.xml");
var loader:Loader;
var req:URLRequest = new URLRequest("http://zozuar.org/wonderfl/las3r.swf");
var ctx:LoaderContext = new LoaderContext(true, ApplicationDomain.currentDomain, SecurityDomain.currentDomain);
loader = new Loader();
loader.contentLoaderInfo.addEventListener(Event.COMPLETE, completeHandler);
loader.load(req, ctx);
}
private var repl:*;
private function initCompiler(e:* = null):void {
_output.text = "ready.";
var replClass:Class = getDefinitionByName("com.las3r.repl.Repl") as Class;
repl = new replClass(265, 265, stage);
repl.visible = false;
repl.rt.evalStr(prelude, ready);
}
private function ready(_:*):void {
_formula.text = presets[0];
_onChange(null);
_play();
}
// from http://wonderfl.net/c/hOvH
private function onUncaughtError(event:UncaughtErrorEvent):void {
var message:String;
if (event.error is Error)
message = Error(event.error).getStackTrace();
else if (event.error is ErrorEvent)
message = ErrorEvent(event.error).text;
else
message = event.error.toString();
_output.text = message;
event.preventDefault(); // ココ重要！
}
private var prelude:String =
"(def << bit-shl)" +
"(def >> bit-sar)" +
"(def >>> bit-shr)" +
"(def abs (. Math abs))" +
"(def ceil (. Math ceil))" +
"(def cos (. Math cos))" +
"(def exp (. Math exp))" +
"(def floor (. Math floor))" +
"(def log (. Math log))" +
"(def pow (. Math pow))" +
"(def random (. Math random))" +
"(def round (. Math round))" +
"(def sin (. Math sin))" +
"(def sqrt (. Math sqrt))" +
"(def tan (. Math tan))";
private var presets:Array = [
"(fn [t] (sin (* 6.28 440 t)))",
"(fn [t] (* t (sin (* 6.28 440 (* t t)))))",
"(fn [t]\n (let [n (* 6.28 440 t)]\n (pow n (sin n))))",
]
}
}