用笛卡尔公式画出的一颗心状图

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源码：

varWidth=Stage.width;
varHeight=Stage.height;
varpen=_root.createEmptyMovieClip("pen_mc",2);
varib=0;
varEnd=90;
this.onEnterFrame=function(){
if(ibfor(j=0;jr=Math.PI/45*ib*(1-Math.sin(Math.PI/45*j))*18;
x=r*Math.cos(Math.PI/45*j)*Math.sin(Math.PI/45*ib)+Width/2;
y=-r*Math.sin(Math.PI/45*j)+Height/4;
drawDot(pen,int(x),int(y),0x00FF00);
//drawCircle(pen,int(x),int(y),2,0x000000,0x00FF00,0);
}
ib++;
}else{
deletethis.onEnterFrame;
}
};
/*因为直接for嵌套循环Flash太吃力了。。所以改用onEnterFrame了...
for(i=0;i<90;i++){
for(j=0;j<90;j++){
r=Math.PI/45*i*(1-Math.sin(Math.PI/45*j))*18;
x=r*Math.cos(Math.PI/45*j)*Math.sin(Math.PI/45*i)+AppletWidth/2;
y=-r*Math.sin(Math.PI/45*j)+AppletHeight/4;
drawDot(pen,int(x),int(y),0x00FF00);
//drawCircle(pen,int(x),int(y),2,0x000000,0x00FF00,0);
}
}
*/
functiondrawDot(pen,x,y,DColor){
pen.moveTo(x-0.5,y);
pen.lineStyle(2,DColor,100);
pen.lineTo(x+0.5,y);
}