Re: silly shader question : curvature convex and concave.

Newsgroups	comp.graphics.rendering.renderman
Date	2012-10-01 14:39 -0700
References	<01857f8d$0$20667$c3e8da3@news.astraweb.com> <8573a758-7aad-40cd-b999-2b838f2b0893@z27g2000prd.googlegroups.com>
Message-ID	<b5f29fe4-c362-41ca-b240-ff5269ab3415@googlegroups.com> (permalink)
Subject	Re: silly shader question : curvature convex and concave.
From	Suruchi Sharma <sur.sharma@gmail.com>

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On Wednesday, February 4, 2009 4:28:52 AM UTC-6, Moritz wrote:
> Hey Sam,
> 
> > I was wanting to calculate the convexity and concavity and curvature of
> > a subdivision surface
> 
> you might want to look at Thomas Burge's curvature shader at
> http://www.affine.org/curvature.html
> It works with subdivs and what you intend is possible with the code in
> there. I've done it myself in the past. :)
> 
> Beers (Coopers),
> 
> Moritz

Hi

I was trying to find an example of a curvature shader online and I stumbled upon this post and several others liked from this. Although I still haven't been successful at figuring out how to do it.

Basically, I want to create a curvature shader in RSL and Slim and match the curvature values to color. Something similar to what is being explained here.
http://www.rhino3d.com/5/help/commands/curvatureanalysis.htm

Could I please get some help in this? Im really not sure how to go about in this.
Any help or suggestion would be greatly appreciated.

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Re: silly shader question : curvature convex and concave. Suruchi Sharma <sur.sharma@gmail.com> - 2012-10-01 14:39 -0700

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