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   x=a*cos3A
   y=a*sin3A   
 
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package
{
//ÐÇÐÎÏß¶¯»­
// x=a*cos3A
// y=a*sin3A
// дÓÚ2010Äê4ÔÂ11ÈÕ
import flash.display.Sprite;
import flash.events.*;
public class Main extends Sprite
{
private var pen:Sprite=new Sprite();
private var lineMc:Sprite=new Sprite();
private var angle:int=-1;//½Ç¶È
private var centerX:Number=stage.stageWidth/2;//ÖÐÐĵãxλÖÃ
private var centerY:Number=stage.stageHeight/2;//ÖÐÐĵãyλÖÃ
public function Main()
{
init();
}
private function init():void
{
addChild(pen);
addChild(lineMc);

//Ãè»æÊ®×Ö×ø±ê
pen.graphics.lineStyle(1);
pen.graphics.moveTo(centerX,centerY);
pen.graphics.lineTo(centerX,0);
pen.graphics.moveTo(centerX,centerY);
pen.graphics.lineTo(centerX*2,centerY);
pen.graphics.moveTo(centerX,centerY);
pen.graphics.lineTo(centerX,centerY*2);
pen.graphics.moveTo(centerX,centerY);
pen.graphics.lineTo(0,centerY);
addEventListener(Event.ENTER_FRAME,Run);
}
private function Run(event:Event):void
{
lineMc.graphics.clear();
if (angle==-1)
{
var px:Number=centerX+200*Math.pow(Math.cos(angl


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Flex——Flash Player Not Found

Are you running your Flex Application and continually getting the error below?
"Flex Builder cannot locate the required version of the Flash Player. You might need to install Flash Player 9 or reinstall Flex Builder. Do you want to try to run your application with the current version?"
Description ......

È¥³ýFirefox 3.6ÖÐflashÓëjava applet¶ÔÏóµÄÐéÏß¿ò

ÔÚFirefox 3.6ÖУ¬µ±½¹µãÔÚflash»òÕßjava applet¶ÔÏóÉÏʱ£¬»á³öÏÖÒ»¸ö»·ÈƶÔÏóµÄÐéÏß¿ò£¬µ±½«flashÓëjava applet¶ÔÏóµÄ´óСÉè³É100%ʱ£¬µã»÷¶ÔÏóºóÒ³Ãæ»á³öÏÖ¹ö¶¯Ìõ£¬Ó°ÏìÏÔʾЧ¹û£¬½â¾öµÄ·½·¨ÊÇʹÓÃÈçϵÄcss¶¨Ò壺
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