[cad-linux] Re: the parametric project

If you're going to be managing networks of dependencies, take a look at
the BGL (Boost Graph Library).  Translating the concepts therein to a
_protocol_ would be a great contribution to a distributed parametric
system.

-----Original Message-----
From: Roland Krause [mailto:rokrau@xxxxxxxxx]=20
Sent: Wednesday, May 21, 2003 9:30 AM
To: cad-linux@xxxxxxxxxxxxx
Subject: [cad-linux] Re: the parametric project


Eric,
you are most welcome to use the kosmos site for RFC's, design documents
whatever you see fit.=20

The thread last week was intense and then fortunately lost some steam.=20

I have started to think about parametric geometry. This is *not* an
easy task but I believe to have a first simple prototype going.=20

It is a model where geometrical entities are considered dependencies
and they are defined by relations to one other geometrical entities. As
an example a point is defined through it's relation to another point.=20

P1 <--- P2=20

P2 relates to P1, if P1 moves so does P2. Very simple but works. The
code for this is in the latest upload on kosmos.sf.net.=20

Roland

--- Eric Wilhelm <ewilhelm@xxxxxxxxxxxxx> wrote:
>=20
> I'm writing code recently and with all of the geometry handling, I
> started=20
> thinking that it would be great to have an editing environment which=20
> supported parametric objects.  I'd like to be able to tie a sketch to
> a loop=20
> structure and have it follow the thing around as the program changes.
>  It=20
> would also be great for making little notes which were not really
> comments or=20
> would be better explained diagrammatically.
>=20
> So, maybe building the Perl interpreter into an editor and linking it
> to some=20
> kind of database would be the way to go.  But how else could you use
> such a=20
> thing?  Maybe when documenting a project, you could tie a sentence to
> an=20
> object or a part?  Or you might even find it useful to have a
> parametric=20
> number stated in your report.  It seems likely that I'm getting
> carried away,=20
> but I continually see the possibilities which exist with a
> well-designed=20
> open-source system.
>=20
> Too bad I'm swamped for the next couple of weeks or I could be
> finishing that=20
> proposal.
>=20
> The thread on a database-cad system seems to have lost some of its
> steam.  I=20
> imagine others have also been busy.  I'd like to get something like
> an RFC=20
> drafted and try to get some programmers involved in this, especially
> those=20
> who have been working on cad software.  If anyone wants to help with
> the RFC,=20
> we could probably use the sourceforge page for kosmos as a
> collaboration=20
> site.
>=20
> Anyone ever get a WIKI started?
>=20
> --Eric
>=20

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