BeatDrawing
...
@author rettuce
Drawing Sound Visualization
音はYoodaさんのKasanaを拝借。
http://soundcloud.com/yooda/kasana
/**
* Copyright rettuce ( http://wonderfl.net/user/rettuce )
* GNU General Public License, v3 ( http://www.gnu.org/licenses/quick-guide-gplv3.html )
* Downloaded from: http://wonderfl.net/c/y68y
*/
package
{
import caurina.transitions.Tweener;
import com.demonsters.debugger.MonsterDebugger;
import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.display.BlendMode;
import flash.display.Sprite;
import flash.display.StageAlign;
import flash.display.StageScaleMode;
import flash.events.Event;
import flash.events.IOErrorEvent;
import flash.events.ProgressEvent;
import flash.filters.BlurFilter;
import flash.geom.Matrix;
import flash.geom.Point;
import flash.geom.Rectangle;
import flash.media.Sound;
import flash.media.SoundLoaderContext;
import flash.media.SoundMixer;
import flash.net.URLRequest;
import flash.text.TextField;
import flash.utils.ByteArray;
/**
* ...
* @author rettuce
*
*/
[SWF(width = 465, height = 465, backgroundColor = 0xFFFFFF, frameRate = 60)]
public class Main extends Sprite
{
public function Main()
{
if (stage) init();
else addEventListener(Event.ADDED_TO_STAGE, init );
}
private function init(e:Event = null ):void
{
removeEventListener(Event.ADDED_TO_STAGE, init );
setStage();
// SoundMixer
playSoundMixer();
loaderInfo.addEventListener(Event.UNLOAD, function(e:Event):void {
stage.removeEventListener(Event.RESIZE, resizeEvent);
loaderInfo.removeEventListener(Event.UNLOAD, arguments.callee );
});
}
/* Sound Mixer */
///////////////////////////////////////////////////////////////////////
private var _bArr:ByteArray = new ByteArray();
private var _pArr:Array = [];
private var _stg:Sprite;
private var _bg:Bitmap;
private function playSoundMixer():void
{
_bg = new Bitmap();
_bg.bitmapData = new BitmapData(stage.stageWidth, stage.stageHeight );
addChild(_bg);
_stg = new Sprite();
_stg.x = stage.stageWidth/2;
_stg.y = stage.stageHeight/2;
addChild(_stg);
for(var i:int=0; i<512; i++){
_pArr[i] = new Point();
}
var sound:Sound = new Sound(new URLRequest('http://lab.rettuce.com/common/src/kasana.mp3'), new SoundLoaderContext(1, true));
sound.addEventListener(IOErrorEvent.IO_ERROR, errorHandler );
sound.addEventListener ( ProgressEvent.PROGRESS, function(e:ProgressEvent):void {
txt.text = "Now loading... "+Math.floor(e.bytesLoaded / e.bytesTotal * 100) + "%";
});
sound.addEventListener(Event.COMPLETE, function(e:Event):void {
sound.removeEventListener(ProgressEvent.PROGRESS, function(e:ProgressEvent):void {
txt.text = Math.floor(e.bytesLoaded / e.bytesTotal * 100) + "%";
});
removeChild(txt);
sound.play();
addEventListener( Event.ENTER_FRAME, beatCheck2 );
});
var txt:TextField = new TextField();
txt.width = 120;
txt.x = stage.stageWidth / 2 -60;
txt.y = stage.stageHeight / 2-20;
addChild(txt);
}
private function beatCheck2(e:Event):void
{
SoundMixer.computeSpectrum(_bArr, false, 0); // byteArr(length=512), FFT, rate 0->44.1 KHz, 1->22.05KHz...
_bArr.position = 0;
var byteTotal:Number = 0; // 両音
var totalR:Number = 0; // 右パン
var totalL:Number = 0; // 左パン
var byte:Number = 0;
for(var i:int = 0; i < 512; i++)
{
byte = Math.abs(_bArr.readFloat());
byteTotal += byte;
if(i<256) totalR += byte;
else totalL += byte;
if(byte>0.1)
{
Tweener.addTween( _pArr[i], {
x:Math.cos((i*360/512-90)*Math.PI/180)*400*(byte-0.05),
y:Math.sin((i*360/512-90)*Math.PI/180)*400*(byte-0.05),
time:0.2, transition:'easeOutQuad'
});
};
};
_stg.graphics.clear();
_stg.graphics.lineStyle(0.5,0x000000 );
_stg.graphics.beginFill(0xFFFFFF*Math.random());
_stg.graphics.moveTo(_pArr[0].x,_pArr[0].y);
for(var m:int=0; m<_pArr.length-1; m++){
var px:Number = (_pArr[m].x + _pArr[m+1].x)/2;
var py:Number = (_pArr[m].y + _pArr[m+1].y)/2;
_stg.graphics.curveTo(_pArr[m].x, _pArr[m].y, px, py);
}
_stg.graphics.lineTo(_pArr[_pArr.length-1].x, _pArr[_pArr.length-1].y );
_stg.graphics.lineTo(_pArr[0].x,_pArr[0].y);
_stg.graphics.endFill();
// 音の平均値
byteTotal /= 512;
// 左右パン平均値
totalR /= 256;
totalL /= 256;
if(byteTotal>0.1){
_bg.bitmapData.draw( stage );
}
var bmd:BitmapData = new BitmapData(stage.stageWidth, stage.stageHeight, true, 0x11FFFFFF );
_bg.bitmapData.draw( bmd );
}
/* Error Handler */
//////////////////////////////////////////////////////////////////
private function errorHandler(e:IOErrorEvent):void
{
MonsterDebugger.trace( 'Error...', e );
}
/* stage set */
//////////////////////////////////////////////////////////////////
private function setStage():void
{
stage.align = StageAlign.TOP_LEFT;
stage.scaleMode = StageScaleMode.NO_SCALE;
stage.addEventListener(Event.RESIZE, resizeEvent);
resizeHandler();
}
private function resizeEvent(e:Event = null):void
{
resizeHandler();
}
public function resizeHandler():void
{
}
}
}