nurbs model ripping when rotating bones.

[misterdi]

Even if you do with stitch (either global or edge stitch) sometimes the surface still break, due to the fact that in Nurbs, one point is determine not just with one CVs but with "curve degree + 1".

Some people suggest to use poly cage for binding and use it as a warp deformer for your Nurbs surface (which can have global stitch on it).

:)

[crgowo]

someone else suggestedthat in 3dbuzz. Can you give more detail as to waht that is. Ive never head of that. Thanks

[misterdi]

Actually it is a two step approach.

When you have finish modeling your NURBS model, you will create a proxy poly model of your nurbs which has less data just the general shape of your model (this proxy is sometimes called polycage model).

Instead of binding your NURBS model directly to the skeleton, you should bind your polycage model into it.

And with your polycage model you use it as a warp deformer for your hires NURBS model. So some people call this technique as indirect binding.

Since the distribution of warp deformer control not just a single point in your NURBS model but also considering neighbouring point (CVs), so less possibility to have break up in your NURBS (unless your NURBS doesn't have enough resolution to handle deformation). You will still have to do global stitch in your NURBS to make sure curvature is maintain during deformation.

Find some tutorial on the net about this indirect binding technique. I see several of them but I don't bookmark the URL.
Maybe you should try to look at Highend or www.boris3d.de

:beer:

[crgowo]

Thanks ill try that after work. :)

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