LineMix Wash
costa 2009_6_24
http://www.facecartoon.cn/blog
package
{
/*costa 2009_6_24
*http://www.facecartoon.cn/blog
*/
import flash.display.Sprite;
import flash.events.Event;
import flash.events.ProgressEvent;
import flash.media.Sound;
import flash.media.SoundChannel;
import flash.media.SoundLoaderContext;
import flash.media.SoundMixer;
import flash.net.URLRequest;
import flash.system.Security;
import flash.text.TextField;
import flash.utils.ByteArray;
[SWF(width='500',height='500',backgroundColor='0xffffff',frameRate='40')]
public class LineMix extends Sprite
{
public static const PROXY:String = "http://www.facecartoon.cn/upload/music/";
public static const CROSSDOMAIN:String = "http://www.facecartoon.cn/upload/music/crossdomain.xml";
private var linesHolder:Sprite;
private var brushNums:uint = 6;
private var brushArray:Array = [];
private var bgm:Sound;
private var bgmChannel:SoundChannel;
private var ba:ByteArray;
private var loadTxt:TextField;
public function LineMix()
{
//Security.loadPolicyFile(CROSSDOMAIN);
loadTxt=new TextField();
loadTxt.x=250;
loadTxt.y=200;
addChild(loadTxt);
initSound();
}
private function onEnterFrameHandler(e:Event):void
{
onBrushTimerHandler()
}
private function onBrushTimerHandler():void
{
//soundBo
SoundMixer.computeSpectrum(ba, false, 0);
refushBrush(ba.readFloat());
}
private function initSound():void
{
//bgm = new Bgm();
ba = new ByteArray();
bgm = new Sound();
var sContext:SoundLoaderContext=new SoundLoaderContext(1000,true);
bgm.load(new URLRequest(PROXY+'mixWeb.mp3'),sContext);
bgm.addEventListener(ProgressEvent.PROGRESS,onSoundLoadProgressHandler);
bgm.addEventListener(Event.COMPLETE, onSoundLoadCompleteHandler);
//onSoundLoadCompleteHandler(null);
}
private function onSoundLoadProgressHandler(e:ProgressEvent):void
{
loadTxt.text=Math.floor(e.bytesLoaded/e.bytesTotal*100)+'%';
}
private function onSoundLoadCompleteHandler(e:Event=null):void
{
removeChild(loadTxt);
bgmChannel = bgm.play();
linesHolder = new Sprite();
addChild(linesHolder);
//bgMc.mask = linesHolder;
for (var i:uint = 0; i < brushNums; i++)
{
if (i == 0)
{
var brush:Brush = new Brush(40, 0);
}else
{
brush = new Brush(Math.random()*3,Math.random()*100-50);
}
linesHolder.addChild(brush);
brushArray.push(brush);
}
addEventListener(Event.ENTER_FRAME, onEnterFrameHandler);
}
private function refushBrush($scale:Number):void
{
trace('scale=====,',$scale);
for (var i:uint = 0; i < brushNums; i++)
{
var brush:Brush = brushArray[i] as Brush;
brush.moveForward(20);
if (i>0)
{
brush.moveBalls($scale);
}
else
{
brush.scaleBrush($scale);
}
brush.rotateHead(brush.mouseX, brush.mouseY);
}
}
}
}
import caurina.transitions.Tweener;
import flash.display.Sprite;
import flash.geom.Point;
class Brush extends Sprite
{
private var _thickness:Number;
private var _lineHead:Sprite;
private var pointsObj:Object;
static public var MAX_LINES:uint = 100;
private var ball_1:Sprite;
private var ball_2:Sprite;
private var linesNum:uint;
private var lineBox:Sprite;
private var _stepX:Number ;
private var theta1:Number = 0;
private var theta2:Number = 10;
private var _positionY:Number;
public function Brush($thickness:Number,$positionY:Number)
{
_positionY = $positionY;
_thickness = $thickness;
_lineHead = new Sprite();
addChild(_lineHead);
_lineHead.alpha = 0;
_lineHead.graphics.lineStyle(1, 0x0000ff);
_lineHead.graphics.moveTo( 0, 20);
_lineHead.graphics.lineTo(15, 0);
_lineHead.graphics.lineTo(0, -20);
_lineHead.graphics.lineTo(0, 20);
ball_1 = drawBall(0xff0000);
ball_2 = drawBall(0x00ff00);
_lineHead.addChild(ball_1);
_lineHead.addChild(ball_2);
ball_1.x = 0;
ball_1.y =0;
ball_2.x = 0;
ball_2.y =0;
pointsObj = new Object();
pointsObj.prevPoints = [];
pointsObj.nextPoints = [];
lineBox = new Sprite();
addChild(lineBox);
}
public function rotateHead($targetX:Number,$targetY:Number):void
{
var dx:Number = $targetX - _lineHead.x;
var dy:Number = $targetY - _lineHead.y;
var rotationAngel:Number = Math.atan2(dy, dx) * 180 / Math.PI;
Tweener.addTween(_lineHead, { rotation :rotationAngel, time:2 } );
_lineHead.rotation = rotationAngel;
//trace(rotationAngel)
Tweener.addTween(_lineHead, { x: $targetX, y:$targetY, time:.5, onUpdate:updateLine } );
}
private function updateLine():void
{
if (pointsObj.prevPoints.length == 0)
{
var point1:Point = new Point(ball_1.x, ball_1.y);
point1 = ball_1.localToGlobal(point1);
var point2:Point = new Point(ball_2.x, ball_2.y);
point2 = ball_2.localToGlobal(point2);
pointsObj.prevPoints[0] = point1;
pointsObj.prevPoints[1] = point2;
}else
{
point1 = new Point(ball_1.x, ball_1.y);
point1 = ball_1.localToGlobal(point1);
point2 = new Point(ball_2.x, ball_2.y);
point2 = ball_2.localToGlobal(point2);
pointsObj.nextPoints[0] = point1;
pointsObj.nextPoints[1] = point2;
//drawLineClip
var lineClip:Sprite = new Sprite;
lineBox.addChild(lineClip);
//lineClip.graphics.lineStyle(1, 0xff0000, 1);
lineClip.graphics.beginFill(0x000000, .5);
lineClip.graphics.moveTo(pointsObj.prevPoints[0].x-x, pointsObj.prevPoints[0].y-y);
lineClip.graphics.lineTo(pointsObj.nextPoints[0].x-x+_stepX, pointsObj.nextPoints[0].y-y);
lineClip.graphics.lineTo(pointsObj.nextPoints[1].x-x+_stepX, pointsObj.nextPoints[1].y-y);
lineClip.graphics.lineTo(pointsObj.prevPoints[1].x-x, pointsObj.prevPoints[1].y-y);
lineClip.graphics.endFill();
pointsObj.prevPoints[0] = pointsObj.nextPoints[0];
pointsObj.prevPoints[1] = pointsObj.nextPoints[1];
linesNum++;
if (linesNum > MAX_LINES)
{
lineBox.removeChildAt(0);
}
}
}
private function drawBall($color:uint):Sprite
{
var ball:Sprite = new Sprite;
ball.graphics.lineStyle(1,0xff0000,1)
//ball.graphics.beginFill($color, .5);
ball.graphics.drawCircle(0, 0, 5);
return ball;
}
public function moveForward($step:uint):void
{
_stepX = $step;
x -= $step;
}
public function moveBalls($theataClip:Number):void
{
theta1 +=$theataClip*10;
theta2 += $theataClip*10;
//ball_1.y =Math.sin(theta1) * _thickness*2 +_positionY*$theataClip*3;
//ball_2.y = Math.sin(theta2) * _thickness*2 +_positionY*$theataClip*3;
Tweener.addTween(ball_1,{y:Math.sin(theta1) * _thickness*2 +_positionY*$theataClip,time:1});
Tweener.addTween(ball_2,{y:Math.sin(theta2) * _thickness*2 +_positionY*$theataClip,time:1});
}
public function scaleBrush($theataClip:Number):void
{
if(_thickness * $theataClip/2>0)
{
Tweener.addTween(ball_1, { y:_thickness * $theataClip/2+1, time:.5} );
Tweener.addTween(ball_2, { y: -_thickness * $theataClip/2-1, time:.5 } );
}
}
}