The order of second derivatives of a surface

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Permalink Reply by David Rutten on August 11, 2014 at 12:18am

I have no idea how those work, I think you'll have to ask on the discourse forum where either Steve or Dale Lear will see it. http://discourse.mcneel.com/

Permalink Reply by Masaaki Miki on August 11, 2014 at 10:25pm

Thanks, David,

The problem was solved.

5 vectors are stored to V, and their order is,

dr/du,dr/dv,d2r/dudu,d2r/dudv,d2r/dvdv

3dsMax provides a similar function, but the order is

dr/du,dr/dv,d2r/dudu,d2r/dvdv,d2r/dudv

a bit different :)

Regards