Ari-Matti Leppaenen wrote:

> John VanSickle wrote:
> 
>> This was done in just a few hours time last night.  before.jpg is the
>> hull mesh and after.jpg is with three levels of subdivision plus normal
>> smoothing.
> 
> That looks nice. Can you see the control mesh after subdivisions and 
> modify it on the fly in your editor? It would make editing a whole lot 
> easier (but needs a lot of computational muscles).


No.  The modeler doesn't do the subdivisions.  The modeler exports the
basic mesh to a POV script file.  I have a set of macros here

   http://enphilistor.users4.50megs.com/nsss.htm

which take the polygon hull and turn it into the smooth form.

> What scheme are you using for subdivisions? You might find this paper 
> interesting:  http://tom.cs.byu.edu/~tom/papers/nurss.pdf. It's one way 
> of preserving sharpe features. I don't know if it's the best option, but 
> not too much work if you have a working Catmull-Clark.

Right now I use a modified Loop scheme (extended to include
quadrilateral faces).

Regards,
John

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