function xDrawCircle(target_mc:MovieClip, nX:Number, nY:Number,
nR:Number, nSegments:Number):Void {
if (nSegments == undefined) {
nSegments = 8;
}
var nAngle:Number = 2*Math.PI/nSegments;
target_mc.moveTo(nX+nR, nY);
for (var i = 1; i<=nSegments; ++i) {
var nTheta:Number = i*nAngle;
var nAnchorX:Number = nR*Math.cos(nTheta);
var nAnchorY:Number = nR*Math.sin(nTheta);
var nControlX:Number =
nAnchorX+nR*Math.tan(nAngle/2)*Math.cos(nTheta-Math.PI/2);
var nControlY:Number =
nAnchorY+nR*Math.tan(nAngle/2)*Math.sin(nTheta-Math.PI/2);
target_mc.curveTo(nControlX+nX, nControlY+nY, nAnchorX+nX,
nAnchorY+nY);
}
}
// Test
var _mc:MovieClip = this.createEmptyMovieClip("target_mc", 1);
_mc.beginFill(0x00FFFF);
_mc.lineStyle(2, 0x0000FF);
xDrawCircle(_mc, Stage.width/2, Stage.height/2, 100, 8);
_mc.endFill();
_____
Ian Thomas wrote:
Thanks for that - I've come up with an approximation based on very similar
code. Not ideal, but it's close enough for the purpose I needed it for. That
combined with a quick hash table to make sure I'm not plotting circles near
other circles has given me the performance I need.
Good luck,
Fumio Nonaka
mailto:[EMAIL PROTECTED]
http://www.FumioNonaka.com/
My books<http://www.FumioNonaka.com/Books/index.html>
Flash community<http://F-site.org/>
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