[Bf-committers] Subsurf modeling in CAD

joe joeedh at gmail.com
Wed Nov 12 03:12:26 CET 2008

This sounds like the idea of generating a set of NURBS or bicubic patches
from a polygon mesh to me.  It's sounds like a cool idea, though our NURBS
don't support patches, of course.


On Tue, Nov 11, 2008 at 3:24 AM, Ton Roosendaal <ton at blender.org> wrote:

> Hi devs,
> Below is a text I got from Claas Kuhnen, teacher Industrial Design in
> Michigan. I knew subsurf modeling would be discovered once as superior
> to Nurbs! :)
> What we probably need is to get good conversion code for Subsurf ->
> Nurbs and back. Anyone?
> -------------------
> I recently saw that Catia from Dassault system incoporated Subdivision
> Surfaces into their workflow. It is fully treated as a parametric
> system, so NURBS surfaces are created on the fly based on the polygon
> mesh and the result can be trimed and further worked on.
> Some years ago AmapiPro 7.5 had NURBS subsurface smoothing included
> instead
> of only Catmull Clark.
> Here are some Catia movies showing you the integration.
> http://www.youtube.com/watch?v=uHfAR97mCY8
> http://www.youtube.com/watch?v=RwOuaNvpPLI
> I thought you might know that this type of modeling is now finally
> becoming the hot topic at Industrial Design. Catia is around 30.000
> dollars and I assume that they have serious reasons for including it.
> ---------------------
> -Ton-
> ------------------------------------------------------------------------
> Ton Roosendaal  Blender Foundation   ton at blender.org    www.blender.org
> Blender Institute BV  Entrepotdok 57A  1018AD Amsterdam The Netherlands
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