[brlcad-tracker] [ brlcad-Support Requests-2447162 ] NURBS, B-Spline, NMG

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Support Requests item #2447162, was opened at 2008-12-19 06:54
Message generated for change (Comment added) made by sf-robot
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Category: Modeling
Group: release 7.12
>Status: Closed
Resolution: None
Priority: 5
Private: No
Submitted By: Gijs van Dam (gpvandam)
Assigned to: Sean Morrison (brlcad)
Summary: NURBS, B-Spline, NMG

Initial Comment:
Hi,

I'm very new at using BRL CAD. I did read the manual, but couldn't find any information about how to use more complex geometry like B-SPLINE, NURBS and NMG. It seems there is nothing in the manual about it and I couldn't find any obvious menu-item in MGED.

Can anyone give me a hint on this? Does anyone know where I can find more documentation?

Thanx.

Gijs

Ps. I use vs. 7.12.2

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>Comment By: SourceForge Robot (sf-robot)
Date: 2009-01-17 02:20

Message:
This Tracker item was closed automatically by the system. It was
previously set to a Pending status, and the original submitter
did not respond within 14 days (the time period specified by
the administrator of this Tracker).

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Comment By: Sean Morrison (brlcad)
Date: 2008-12-22 15:46

Message:
It's also probably worth pointing out that we're currently working on a
renewed implementation of full BREP/NURBS support that (eventually)
includes interactive editing support.  That is something I expect may get
finished up in either late 2009 or 2010 at the latest.  That's just a rough
guess giving current developer resources and other competing priorities
unless more developers show up to work on NURBS.  Our first priority is
ray-tracing, then conversion support, then visualization/tessellation
support, then editing support.

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Comment By: Sean Morrison (brlcad)
Date: 2008-12-22 14:59

Message:
Gijs,

There's limited documentation on using those more complex geometry types
for a couple of reasons.  The editing facilities and user interface for
manipulating those three in particular are very basic.  It's not something
you're going to want to do (as a user) on a day-to-day basis without
someone improving the editing tools some more.  Most of their provided
implementation is for import/export in support of other CAD packages.

Depending on what you're trying to do, there is almost always an
alternative way of editing that is preferred over directly editing
nurbs/nmg/bots using other implicit primitives.  Probably not the answer
you were looking for, but hopefully explains things nonetheless.

Cheers!
Sean



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