[cad-linux-dev] Re: spec
- From: "Jim parker" <jparker@xxxxxxxxxxxx>
- To: <cad-linux-dev@xxxxxxxxxxxxx>, <csomerlot@xxxxxxxxx>
- Date: Wed, 25 Aug 2004 16:14:46 -0400
Not currently, it is my thesis for my MS, which I hope to defend in
November/December. I will then release it to the wild after that, most
likely on the GNU web site Savannah.
then in March of next year, I will present it to the world at the
Chesapeake Sailing Yacht Symposium.
This is of course all dependent on any IP claims of my current
employer.
cheers,
H. James Parker
Naval Architect
Gibbs and Cox, Inc.
office) 703-416-3625
fax) 703-416-3679
jparker@xxxxxxxxxxxx
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>>> Chris Somerlot <csomerlot@xxxxxxxxx> 8/25/2004 4:03:35 PM >>>
Is gtkCAD available? It seems its sourceforge page is down.
On Wed, 25 Aug 2004 15:56:19 -0400, Jim parker <jparker@xxxxxxxxxxxx>
wrote:
> In GtkCAD, I have a global coordinate system for the complete model,
> then each part has a local coordinate system. Entities default to
the
> current parts local coordinate system (At this stage of the game,
the
> local and global coordinate systems are often the same).
>
> Entities do not have coordinate systems associated with them.
Entities
> that need orientation information use normal vectors. Like Acad,
they
> are normally drawn in the current plane, unless changed by the user.
> This might be limiting with respect to parametric modeling, but ...
>
> The goal here is to build parts individually, then assembly them
into
> the model. This would be the equivalent of drawing in Acad with
blocks
> from a part library. It also has the benefit of locating each part
> using parametric relations between the coordinate systems.
>
> cheers,
>
> H. James Parker
> Naval Architect
> Gibbs and Cox, Inc.
> office) 703-416-3625
> fax) 703-416-3679
> jparker@xxxxxxxxxxxx
> ***********************************************
> This e-mail and any attachments contain privileged, business
sensitive,
> and/or proprietary information. The information is intended to be
for
> the use of the individual or entity named. If you are not the
intended
> recipient, be aware that any disclosure, copying, distribution or use
of
> this information is prohibited. If you have received this electronic
> transmission in error, please immediately notify the Gibbs & Cox,
Inc.
> Security Supervisor at 703.416.1240 or via email at
> Security@xxxxxxxxxxxxx
> ***********************************************
>
> >>> Chris Somerlot <csomerlot@xxxxxxxxx> 8/25/2004 3:15:30 PM >>>
> On Wed, 25 Aug 2004 14:13:28 -0400, Jim parker
<jparker@xxxxxxxxxxxx>
> wrote:
> > As it currently stands ARCS and CIRCLES are not fully described.
> You
> > need at minimum a normal vector to define the orientation of the
face
> in
> > 3-D space.
> >
> Yes, actually this brings up a whole other entity that I'm missing:
> coordinate systems. In acad circles are always drawn in the plane of
a
> particular UCS. I'm wondering if I should just give a vector
attribute
> to circles and arcs, or give every geometric entity a coordsys
> attribute and have the coordinate system defined as a separate
entity,
> like layers. Listers?
>
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