Re: gEDA-user: A not too serious PCB question

[Joerg <joergsch@xxxxxxxxxxxxxxxxxxxxx>]

Bill Gatliff wrote:
> Andy Fierman wrote:
>> Could open a whole new topological discussion on auto routers though :)
>>   
> 
> I don't know how you could automate the boundary descriptions, but once 
> you had that then it looks like a basic flood-fill...
> 

Typically this isn't done fully automated. One method is to autoroute or 
do a regular hand layout with default trace width, fatten up or fill 
every other trace by hand section by section, then do an auto-fill for 
the remaining traces.

It would theoretically be possible to automate by having the SW perform 
ratiometric trace width adaptation but it would require that it also 
handles off-center situations where the density increases. I have never 
heard of a layout program that can do all of this by itself, but who knows.

-- 
Regards, Joerg

http://www.analogconsultants.com/



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