Re: gEDA-user: more kvetch re: pcb Arcs

[Mark Rages <markrages@xxxxxxxxx>]

On Tue, Feb 2, 2010 at 12:52 PM, DJ Delorie <dj@xxxxxxxxxxx> wrote:
>
>>  - "offset" button like 2d CAD packages have
>>  - "extend/trim" mode like 2d CAD packages have
>
> Could you define these?
>

Have you ever use autocad or qcad?

"offset" means you can enter an offset, say 100 mils, then select on
one side of an existing object and make a new object at that offset.

It is an easy way to make a line parallel with another one, a
concentric circle, a concentric arc, or a trace that follows the
inside / outside of another one.  (by offsetting from each line or arc
in the existing trace).

Extend lets you define a limiting object and then click on the object
you want.  It will extend until it hits the limiting object.  Trim is
the same thing, but the object is made shorter rather than longer.
These operations only make sense for line and arc objects.

Join does a trim/extend of two objects to their junction point.
Optionally you can decide a radius or fillet length and the arc or
line will be inserted automatically.

These operations all have one thing in common:  they let you do
accurate work based on existing objects, without working on a grid.

You can try them in qcad.  apt-get install qcad

Regards,
Mark
markrages@gmail
-- 
Mark Rages, Engineer
Midwest Telecine LLC
markrages@xxxxxxxxxxxxxxxxxxx


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