Vray curvature texture in maya (concave/convex)?

[Dariusz Makowski (Dadal)]

Epic thanks.

[Hos]

If I am not mistaken the texture gives brighter colors for both concave and convex corners? Is there the plan in a future update to get different colors for the convex and concave curvature?

[emil.kirichev]

Not at the moment, since the way it works it is hard to define if the curvature is concave or convex (perhaps doable for nurbs surface only).

[Hos]

That is too bad,
thanks

[Bertjenkins]

Hi,

I am just testing 3.1 and so far, so awesome. However one thing I cannot get to work is the new curvature texture. How does it work? I was hoping you could use it to add scratches to the convex areas and dust build up to the convex areas. Is this possible? How would you set it up with say a flat green and a flat red colour?

Thanks

[svetlozar.draganov]

Here is one quick example:

scene:http://ftp.chaosgroup.com/support/scenes/curvature.zip

At this point VrayCurvature texture cannot separate concave from convex areas.

[Bertjenkins]

Aah i see, thanks for that, I was trying to plug in the colours rather than using the output. I'll give that a try. Judging by your test, looks like it could still be useful, even if lacking true convex/concave options

[GregCooper]

Hi, was wondering if there was any update on this? I notice that the vray curvature node for Houdini seems to have an option to read either convex/concave or both. Any chance of getting this same implementation for Maya? I'm currently using the VrayDirt texture to exclude concave curves but its difficult to get the right result

[vlado]

The curvature texture has been included for a while now; it should be the same as in Houdini. See the attachments how to create it.

Best regards,
Vlado

[GregCooper]

Ah yeah thanks Vlado. I've been using that CurvatureTex as well but I thought I'd seen an option somewhere to differentiate between convex and concave curves but I could have been mistaken. Is that something that could be implemented?