[Sidefx-houdini-list] Skin SOP Flipping

Peter Bowmar pbowmar at gmail.com
Fri Jan 6 16:58:59 EST 2006


Hmm. That's odd, if things are sorted in order, they should be fine to
skin. I'm not sure what to suggest in that case...

Perhaps you need to rebuild the curve with an Add SOP, after sorting?

Cheers,

Peter B

On 06/01/06, Rick Walia <rickw at the-mill.com> wrote:
> Hi Peter,
>
> thanks for the reply. I tried that but it seems to have done nothing to fix the
> flipping and twisting ;(
>
>
>
>
>
> Peter Bowmar wrote:
> > Hey Rick,
> >     Can you use the Sort SOP, using Proximity to Point or Along
> > Vector, perhaps? Just a thought...
> >
> > Cheers,
> >
> > Peter B
> >
> > On 06/01/06, Rick Walia <rickw at the-mill.com> wrote:
> >
> >>Hi guys,
> >>
> >>I have an series of curves generated by using the extract function of the cookie
> >>sop. I have an object passing through a grid and am extracting the profile at the
> >>intersection. The other curves are a series of peaks from the 2 objects. All the
> >>curves have different point counts as the object that passes through the grid is
> >>deforming.
> >>
> >>I need to skin all these curves but I'm finding that in certain frames the mesh
> >>generated from the skin flips for some reason. I'm not quite sure what's happening
> >>here.
> >>
> >>I suspect that the mesh generated from the skin is flipping because the point
> >>order is changing as my object passes through the grid.
> >>
> >>I was wondering if there's a way to set the 0 position on all the curves to be the
> >>same on the Y plane? In maya I would cut all the curves with an interesection with
> >>a line. All the curves then would have their 0 point position be the same plane.
> >>I can then rebuild all the curves and loft them.
> >>
> >>I looked at the curvesect sop but it seems that I can only keep one side of the
> >>curve. All I really need is to slice the curve so that all their 0 point starts in
> >>the same place and flows in the same direction so that I can skin/loft it properly.
> >>
> >>Cheers,
> >>
> >>
> >>--
> >>Rick Walia
> >>
> >>The Mill NY
> >>
> >>
> >>
> >>_______________________________________________
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> >>
> >
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>
>
> --
> Rick Walia
>
> The Mill NY
>
>
>
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