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¡£ÎÒÃÇÌṩy=a*sin(b*x);Õâ¸öÇúÏßÄ£ÐÍ
a ΪÕñ·ù£¬bΪÇ󲨳¤Ê¹ÓõIJÎÊý£¬²¨³¤Ç󷨣º360/|b|=²¨³¤
Á˽âÕâ¸ö¹«Ê½ºó£¬½ÓÏÂÀ´£¬ÎÒÃÇÐèÒª´´½¨Ò»ÌõÕýÏÒÇúÏßͼ°¸£¬×¼±¸Ò»¸öÕñ·ùµÄ²ÎÊý£¬Ò»¸öÇ󲨳¤µÄ²ÎÊý£¬»¹ÓÐÒ»¸ö²¨³¤µÄÏ߶γ¤¶È£¬Öظ´´ÎÊý
 public function CreatSinLine(swing:Number,wavelengh:Number,X_length:Number,amount:int,startX:Number=0,startY:Number=0):void
  
²ÎÊýswing £º´ú±íÕñ·ù
      wavelength:²¨³¤µÄ²ÎÊýbÖµ
      x_length: Ï߶㤶È
     amount£º¸´ÖƵĴÎÊý
     startX£º¿ªÊ¼µÄxλÖÃ
     startY £º¿ªÊ¼µÄyλÖÃ
³õ²½µÄÄ£ÐÍ£º
//y=a*sin(b*x);
public function CreatSinLine(swing:Number,wavelengh:Number,X_length:Number,amount:int,startX:Number=0,startY:Number=0):void
{
this.graphics.lineStyle(1,color);
this.graphics.moveTo(startX,startY);
var W_len:int=int(360/wavelengh);//²¨³¤180¶È
if(amount<=0)return;
for (var i:int=0; i<=W_len*amount; i++)
{
var posX:Number=i*X_length/W_len;
var posY:Number=swing*Math.sin(-i*wavelengh*Math.PI/180);
this.graphics.lineTo(posX,posY);
}

}
´´½¨Ò»¸ö·â×°ºÃµÄÕýÏÒÇúÏßÀà¡£ÕâÑù¾Í¿ÉÒÔʵÏÖ´´½¨Ò»ÌõÇúÏßÁË
 ///SinLine.as ¸ÃÀàΪÕýÏÒÇúÏߵĴ´½¨y=a*sin(bx);
//vesion 1.0
//author ÏÄÌìµÄÊ÷ÈË
package
{
import flash.geom.Point;
import flash.display.Sprite;
public class SinLine extends Sprite
{
private var START_POINT:Point;
public function SinLine()
{
}
public function clone():*
{
return new SinLine();
}
//´´½¨ÕýÏÒÇúÏßͼ°¸
//y=a*sin(b*x);
public function CreatSinLine(swing:Number,wavelengh:Number,X_length:Number,amount:int,startX:Number=0,startY:Number=0):void
{
this.graphics.lineStyle(1,0x000000);
this.graphics.moveTo(startX,startY);
var W_len:int=int(360/wavelengh);//²¨³¤180¶È


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