Re: gEDA-dev: teardrops vs polygons

[Ben Jackson <ben-at-NOSPAMben_dot_com>]

On Thu, Nov 20, 2008 at 12:39:51AM -0500, DJ Delorie wrote:
> 
> I wonder if the polygon clipper is being ignorant of arcs that aren't
> multiples of 90 degrees?

That doesn't seem to be the case.  I've run into problems like this before
when line endpoints overlap.  I've also seen it caused by one straight
line being made of two segments (normally impossible because the drawing
code won't create them).  I'm guessing it has to do with all the stacked
traces.  The fact that it happens there is probably a mathematical
coincidence that is causing points to align exactly or in just the right
way.  That's why I suspected (and verified) that a slight change in the
angle leads to a slight change in the teardrops and avoids the problem.

-- 
Ben Jackson AD7GD
<ben@ben.com>
http://www.ben.com/


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