Re: gEDA-user: gEDA-dev: Arc intersection connectivity bug

[Ineiev <ineiev@xxxxxxxxx>]

(I'm sorry, the mailer threw the message to spam)
On 11/11/09, Peter Clifton <pcjc2@xxxxxxxxx> wrote:
> It looks like the teardrop plugin's use of arbitrary angle arcs has
> exposed a bug in the the intersection calculation of arcs. (And their
> bounding boxes look to be wrong as well).

I don't think the bounding boxes are wrong (the boxes of the lines on
the same board are `widened' in a similar way), it is the check that
is not strictly correct.

> I _hate_ arcs and related geometry.. they caused me no end of grief in
> gschem, so I'm not feeling keen to dig into the code and debug it
> myself!

Arcs are OK, unless they are ellipsoidal; in that case they can't
survive rotation by arbitrary angles.

Cheers,
Ineiev


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