Mail Archives: geda-user/2012/10/31/17:04:17
On 10/29/2012 05:19 PM, John Doty wrote:
>> I dunno. The boards I make with it work just fine. Why do I
>> never run into these limitations, when I use PCB very frequently,
>> while you, a person who just said they don't lay out their own
>> boards, see all of these horrible problems?
>
> I can't grok all the magic properties of its peculiar set of
> abstractions. "Polygon" doesn't mean a geometric object and
> "elements" are not elementary. The idea that objects are composed of
> objects composed of objects, ... is missing. The idea that shape and
> physical properties are independent is missing.
>
> Now, I thought it entirely likely that represented my own
> limitations. But then, I suggested it to people with layout
> experience, and they didn't like it either. Two years ago, I had an
> experienced mechanical engineer working for me, and I tasked him with
> learning pcb. He failed. But I haven't had this kind of trouble with
> gEDA.
I don't get it. I'm not disputing what you say above; these things
may very well be true. But I lay out boards with it all the time, about
25 in the past year, and have never hit these issues.
Why should I care if PCB has a structure that's called a "polygon"
that isn't really a polygon? I use 'em when I need to place some copper
somewhere...no problem.
I am honestly not trying to be argumentative here. I just don't see
what the big deal is.
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
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