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Subject:	Re: [geda-user] PCB interface (ECAD vs. MCAD)
From:	"Chris Smith (space DOT dandy AT icloud DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
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Date:	Mon, 13 Jul 2015 10:01:31 +0100
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> On 13 Jul 2015, at 09:40, Cirilo Bernardo (cirilo_bernardo AT yahoo DOT com) [via geda-user AT delorie DOT com] <geda-user AT delorie DOT com> wrote:
> 
> Now generally these
> days if you say "MCAD" you're talking about 3D solid model design
> software; if you're doing 2D stuff that's simply drafting software
> and not necessarily MCAD although no one will dispute that it's
> CAD.

That’s what I meant.  I was thinking purely of 2D geometry.

> Otherwise the only significant feature I can think of which is
> shared by ECAD and MCAD is the 2D geometry code needed to create
> outlines/cutouts/fills in the PCB design phase. I guess MCAD
> would also do clearance checks so you could script it to do
> DRC on 3D models of tracks if you really wanted to do things the
> hard way.

That’s my point.  If you ignore the modern 3D MCAD stuff and look at a simple 2D draughting package, like QCad, then PCB layout is just that plus electrical semantics — relationships between objects and layers.

Regards,
Chris
—
Chris Smith <space DOT dandy AT icloud DOT com>

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