kicad-developers team mailing list archive

[Tomasz Wlostowski <tomasz.wlostowski@xxxxxxx>]

> both is a python object that is visible to C++ that is stuffed at each distance test point
> in the DRC?  At least one of the two members would need to be updated on each compare.

Hi Dick,

I'm not sure, it might be the case if a single matching expression 
refers to both items. A crude solution would be to input two expressions 
(one for each object), and calculate their values prior to running the 
actual DRC. A****m works this way and its DRC is maybe not the fastest 
in the world (~20 secs for a moderately complex 12-layer board), but 
certainly quite flexible.

> It will definitely be a bottleneck.  Maybe we should measure how bad soon, otherwise this
> is a suggestion which serves as a roadblock to progress, and the roadblock itself it not
> currently a solution.
P&S is currently the top priority for me, I can't spend time evaluating 
DRC speed. Another bottleneck in the DRC is the lack of spatial indexing 
and numerically unstable clearance calculations. There's a lot of stuff 
to be improved there.

> The idea is innovative, and if it is not like watching snails race, it may have some merit.
Thanks.

Tom