[Sidefx-houdini-list] HDK : Pos using UV Attribute

brian goodwin brian.r.goodwin at gmail.com
Tue Mar 18 12:22:42 EDT 2008


Hey man
my advice seems futile
ill ask some guy at work when i see him,
Im sure its possible.
ssory about that

On Tue, Mar 18, 2008 at 3:24 PM, Jaideep Khadilkar <iamjaideep80 at yahoo.com>
wrote:

> Hi Brian...
>
> I already tried using Primitive attribute. But it does the same thing as
> primuv expression. It uses prim_attribute function of Vex and the help of
> this function says,
>
> Evaluates the attribute string att for primitive pn at the parametric
> location u, v.
>
> And I don't want to find the Position on Parametric u and v, but texture u
> and v.
>
> I hope u can help me.
>
> ----iamjaideep80
> (Jaideep Khadilkar)
>
> brian goodwin <brian.r.goodwin at gmail.com> wrote: I think by using the
> primitive attribute in VOP's, it should give u the
> solution.
>
> let me know if u need some help setting it up.
>
>
> On Tue, Mar 18, 2008 at 2:59 PM, Jaideep Khadilkar
> wrote:
>
> >  Hi All...
> >
> >  I want to find position of a point on a surface using its uv
> attributes.
> > "primuv" expression gives me the position, if the surface is NURBS, but
> it
> > uses orignal NURB uv to calculate position and doesn't use texture uv
> > atrribute that we modify.
> > I have a polygon model with UV texture attribute from 0 to 1. Using the
> uv
> > texture attribute, I want to add some points evenly spaced in the uv
> texture
> > space(like a grid) and on the corresponding positions on the model.
> >
> > How to do that???
> >
> >
> > ----iamjaideep80
> > (Jaideep Khadilkar)
> >
> >
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>
>
>
> --
> brian
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-- 
brian



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