Re: I Want An Easier, Faster, Better CAD Tool

On Sun, 13 Jul 2008 16:30:43 -0600, "nitnit" <no@[EMAIL PROTECTED]
> wrote:

>To no one in particular. 
>I'm trying to figure out what's going on, 
>not tell anyone what is.
>
>I remember seeing quite a lot of discussion at the, v2~v3, time
>regarding the loss of Alias purchased AGLib usage and development
>of their current geometry engine on McNeel's Rhino forum.  Efforts 
>to search for any of those old discussions have been fruitless.  
>Archives hosed?  Unfortunate if so.     
>
>If you can find any of the old discussions ...?
>
>Regarding OpenNURBS, I've never paid much attention to it.
>
>http://www.opennurbs.org/index.htm
>   openNURBS is an open source toolkit for reading and writing models 
>   in the 3DM format. Our full-featured development platform is Rhino. 
>http://www.opennurbs.org/background.htm
>   The openNURBS Initiative was founded by Robert McNeel & Associates 
>   in January 2000, with the sole purpose of providing CAD, CAM, CAE, 
>   and computer graphics software users reliable methods for transferring

>   3-D geometry between applications.
>http://www.opennurbs.org/faq.htm
>   Who is funding the openNURBS Initiative and why?
>   Robert McNeel & Associates. They feel that the 3-D market is stifled 
>   because of the inability to reliably transfer 3-D geometry between 
>   applications. The problem is too big for us to solve alone. By funding

>   the operating cost of openNURBS, others will get involved in the
toolkit 
>   design and development. It will be a much cheaper and effective way to

>   solve the problem.
>
>It would appear that it is not intended to be a "kernel", e.g. geometry
>creation and manipulation functions.  True? ...

  I'd sort of expect something like that as a NURBS curve or surface
will map to an IGES file & IGES needs no kernels to be IGES. And Rhino
started out as a surface modeler, not a solids modeler (which use
kernels to produce BREP solids from such as NURBS surfaces).
  You don't need a kernel to create curve or surface either.

>news:404f5ffd$1@[EMAIL PROTECTED]
>    The openNURBS toolkit 

  http://www.opennurbs.org/

>    does not contain any functions or cl***** 
>    to assist in calculating intersections of  curves or surfaces.  
>    You will have to come up with your own intersector or find a 3rd 
>    party product to use.
>    Dale Fugier
>    Robert McNeel & Associates
>

  But what of the current Rhino solids "kernel"?
-- 
Cliff