[Sidefx-houdini-list] Skin SOP Flipping

Peter Bowmar pbowmar at gmail.com
Fri Jan 6 16:27:50 EST 2006

Hey Rick,
    Can you use the Sort SOP, using Proximity to Point or Along
Vector, perhaps? Just a thought...


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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