Want a cirkle to be drawn when the radius is rotating

1

Hello!
I have a line (“radie_mc”) rotating when the button “btnPlayPause” is pressed. The line I think as a radius in a circle. I want a circle to be drawn when the radius is rotating. I have a tiny point at the end of the radie called “spets”. I thought that I could curve to that point when the radie is rotating, but that doesn´t work. Can anyone help me with this I would be greatful.

 

btnText = ["Draw", "Stop"];
// ---------------------------
booPlaying = 0;
// Set default button display
strBtnText = btnText[booPlaying];
// ---------------------------
numRotateRate = 1;
fncRotate = function () {
 radie_mc.nRotationValue = (radie_mc.nRotationValue+numRotateRate)%360;
 radie_mc._rotation = radie_mc.nRotationValue;
 lineStyle(3,0x66,50);
 moveTo(_root.radie_mc.spets._x, _root.radie_mc.spets._y);
  curveTo(_root.radie_mc.spets._x, _root.radie_mc.spets._y)
	 trace("_root.radie_mc.spets._x="+_root.radie_mc.spets._x); 
  
};
btnPlayPause.onPress = function() {
 
 if (this._parent.booPlaying) {
  // Insert whatever script needed here for action if already playing
  clearInterval(this._parent.objRotate);
 } else {
  this._parent.objRotate = setInterval(this._parent.fncRotate, 5); 
  

} 
  
  
 this._parent.booPlaying = Number(!this._parent.booPlaying);
 this._parent.strBtnText = this._parent.btnText[booPlaying];
};