NURBS - non uniform rational b-splines, are a mathematical approach of
representating surfaces using polynomial type functions, these are what
all-high end CAD systems use as opposed to the polygonal approach used for
geometry in most games.
>From: german kogan <[EMAIL PROTECTED]>
>Reply-To: Discussion list for Java 3D API <[EMAIL PROTECTED]>
>To: [EMAIL PROTECTED]
>Subject: Re: [JAVA3D] Write CAD tool using Java3D?
>Date: Fri, 29 Jun 2001 10:22:06 -0500
>
>Whats NURBS?
>
>On Fri, 29 Jun 2001, Wayne Glanfield wrote:
>
> > Java3D is sufficient to write a solid modeling CAD application, the user
> > however, must write a geometry engine based on NURBS to generate the
>curves,
> > surfaces and solids similar to those used in Parasolid/ACIS.
> >
> >
> > >From: Michael Schneider <[EMAIL PROTECTED]>
> > >Reply-To: Discussion list for Java 3D API
><[EMAIL PROTECTED]>
> > >To: [EMAIL PROTECTED]
> > >Subject: Re: [JAVA3D] Write CAD tool using Java3D?
> > >Date: Fri, 29 Jun 2001 08:10:09 -0400
> > >
> > >A nice thing about parasolid is that it uses XT, and XML format
> > >to store its data rep. This makes it easy to writer loaders for it.
> > >
> > >Hope this helps,
> > >Mike
> > >
> > >
> > >
> > >http://www.ugs.com/products/parasolid
> > >
> > >
> > >
> > >german kogan wrote:
> > >
> > > > Where can I find these packages? I tried looking for them but did
>not
> > >see
> > > > anything.
> > > >
> > > > Thanks
> > > >
> > > > On Thu, 28 Jun 2001, Rajamiyer Ravichandran wrote:
> > > >
> > > > > Java3D is not sufficient to create a CAD tool. Java3D
> > > > > is simply a visualization API. Drawing a sketch in 2D
> > > > > and extrude to 3D is in the domain of solid modeling.
> > > > > YOu have to work with some Solid Modeling APIs such as
> > > > > Parasolid, ACIS etc.
> > > > >
> > > > >
> > > > > --- Firas MOHAMED <[EMAIL PROTECTED]> wrote:
> > > > > > I don't think so ...
> > > > > > There are 2 critical needs from Java2D : GeneralPath
> > > > > > and the logical operations, if you don't need the
> > > > > > second, you'll need the first ..
> > > > > > Firas
> > > > > >
> > > > > > Anders Hasselkvist wrote:
> > > > > >
> > > > > > > I have seen many messages in this interest group
> > > > > > regarding Java3D and CAD tools (geometry modelling
> > > > > > tools). I would like to create a CAD tool using only
> > > > > > Java3D, i.e. not use Java2D at all. Is that
> > > > > > possible, or do you think I must use Java2D when
> > > > > > sketching 2D geometries?
> > > > > > >
> > > > > > > In order to create a 3D part using the CAD tool
> > > > > > the user should for example be able to sketch a 2D
> > > > > > profile, extrude, then maybe create a workplane,
> > > > > > sketch a new profile on that plane, extrude, etc.
> > > > > > >
> > > > > > > During a sketch I would like to have animated
> > > > > > lines, rectangles and so on.
> > > > > > >
> > > > > > > Have anyone created such tool (a standard CAD
> > > > > > tool) using Java? If yes, is it possible to do this
> > > > > > without using Java2D?
> > > > > > >
> > > > > > > /Anders
> > > > > > >
> > > > > > >
> > > > > >
> > > > >
> >
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