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	Sun, 27 Dec 2015 13:47:57 -0800 (PST)
Date:	Sun, 27 Dec 2015 22:47:51 +0100
From:	"Nicklas Karlsson (nicklas DOT karlsson17 AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
To:	geda-user AT delorie DOT com
Subject:	Re: [geda-user] using DRC for other clearance values -- probably a
	bad idea
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> > > simply examining features pairwise is more applicable.  However, that's
> > > actually mostly a sub-case of a general keep-out mechanism which is
> > > probably something pcb wants as well (or perhaps there are already ways
> > of
> > > doing this that I'm not aware of).
> > >
> > > Britton
> >
> > The hard problem I consider is:
> >   1. Calculate which drawing primitives intersect, hardest problem.
> >   2. Figure out which drawing primitives belong to the net probably need
> > (1.).
> >   3. To some extent shape of the grown object or bloat as you call it.
> >
> > There may be some problems to find the objects in the data but this is
> > most probably only about good efficiency. I think code could be reused for
> > the hardest problem the three points above.
> >
> 
> The existing code can definitely tell you which components connect of
> course.  Once you have all the primitives, you could go through and do
> proximity tests with other nearby things.  Note that you may not be able to
> use the existing rtree stuff as a course filter: I'm not sure it will tell
> you about things on other layers.
> 
> Britton

It will tell about things on other net, check grown/bloated copies of drawing primitives for this net on this layer for intersection of drawing primitives connected to other net on other layer. A graphical representation should make it all very clear and simple. For corners there is a need to add a circle segment or maybe a full circle as in attached pictures, think compass drawing tool on the corner.


Nicklas Karlsson <nicklas DOT karlsson17 AT gmail DOT com>

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