Re: gEDA-user: PCB format wishlist

[John Doty <jpd@xxxxxxxxx>]

On Sep 6, 2010, at 10:33 AM, Andrew Poelstra wrote:

> On Mon, Sep 06, 2010 at 09:53:36AM -0600, John Doty wrote:
>> 
>> Need some geometric shapes. Need to be able to attach material properties
>> to them (including "vacuum" for holes).
>> 
> 
> How about?:
>  trace      (inc. arcs, pads)

Trace? Pad? Forget them: they aren't primitive geometric concepts. Remember, all shapes should support any use by any material, or vacuum, in any layer or collection of layers. A "trace" is a particular (usually itself composite) shape of conductive material.

>  polygon    (inc. rectangle, etc)

What's the distinction here?

>  circle     (inc. quarter-circle, half-circle)

Versus arc?

>  via

Definitely not primitive. A hole in one or more layers with conductive material in it.

> 
> 
>> Net and properties for DRC are definitely not primitive.
>> 
> 
> Of course. My bad.
> 
> 
> Andrew
> 
> 
> 
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John Doty              Noqsi Aerospace, Ltd.
http://www.noqsi.com/
jpd@xxxxxxxxx




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