Re: Rounded Polyline, and other questions?

[Lars Clausen <lars raeder dk>]

On Thu, 2004-06-24 at 08:13, anthonym overture com wrote:
> Not a problem, it's a good thing because I realize I missed something
> with the previous patch, I didn't adjust the radius if if was bigger than
> the polyline could handle.  This only manifested itself with acute angles
> when rounding polylines.
> 
> Anyway, this is fixed in the attached patch (which also includes the previous
> changes, so you can disregard that patch).

I've applied this patch, with some changes (moved purely geometric
functions to geometry.c, moved unrounded rendering back to polyline).

I see one weird behaviour right now:  You calculate the minimum radius
for the entire line.  This means that if you have a well-rounded
polyline with >>3 points and then bend one end back, all corners
suddenly become less rounded, not just the one that's bent.  Guess the
radius calculation should be local to each corner.

> Also, I believe it wouldn't be too hard to add the corner rounding to the
> polygons, and I may submit a patch for that sometime soon.

Shouldn't be much harder than the polyline, indeed.

-Lars