[Sidefx-houdini-list] Rman VOP displace shader

Jeff Higgins jeffrey.higgins at gmail.com
Mon Jun 18 13:47:32 EDT 2007


Are you use the DisplaceAlongNormal VOP with the Object Space toggle turned
on?

I've done used this successfully in past, there is a bit of trickery
involved in making sure all of you variables are in the right space though,
but you should be able to get it work.

Hope this helps,

jeff


On 6/18/07, Sean Lewkiw <seanl at rainmaker.com> wrote:
>
> Hi,
>
> I've built an RMAN VOP displacement shader using the VOP aanoise.  When
> I animate the camera, the noise moves.  So I added an rsl_transform
> node, from "current" to "world". Still moves.  Tried an in-line VOP with:
>
> transform("object",P);
>
> ... no joy.  Tried:   vtransform("current", "world", P);
>
> ... no joy.  Then I tried to pipe the first transform above into another
> in-line VOP with
>
> noise(pp*10) * .2;
>
> ... and it works, the noise sticks.  Is the Houdini RMAN aanoise VOP
> broken?  (I see lots of space change warnings in my .err files about the
> voplib.h files.)
>
> Sean
>
> --
> Sean Lewkiw
> --
> Rainmaker Digital
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> London W1D 5EU
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>
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