Hi Alias, I'm not sure I understand what you mean by 'arc' -- isn't anything you do with curveTo an arc?
If that helps, I have some related code attached that I wrote a while ago. It's a bezier curve that you can drag directly to modify, i.e., not by moving the control point but holding on to the curve itself. So, it contains the math to calculate/guess a point /on/ the curve and its t (in the 0..1 range) from a given point /near/ the curve, and it can calculate the required control point to give you a curve that goes through a given point at a given t. It's in haXe, but should translate very easily. BezierTest.hx is just a hackish test, Bezier.hx contains the math -- moveControlPoint is probably what you're looking for. HTH, Mark On Sun, Aug 3, 2008 at 11:53 PM, Alias™ <[EMAIL PROTECTED]> wrote: > Hi guys, > > Can anyone point me towards some info on how to draw a proper curved > arc in actionscript using curveTo? I've seen plenty of stuff about how > to draw an arc using loads of short lines, but that isn't really going > to cut it - I need this to be efficient and look good. > > I believe the crux of the matter is working out the correct coords for > the control points - is there any info on computing the curvature of a > line segment on a quadratic bezier? Has anyone cracked this? > > Thanks in advance, > Alias > _______________________________________________ > Flashcoders mailing list > Flashcoders@chattyfig.figleaf.com > http://chattyfig.figleaf.com/mailman/listinfo/flashcoders >
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