[Sidefx-houdini-list] sdf for animated turbine

zoran arizanovic zoran.arizanovic at gmail.com
Wed Sep 7 10:17:01 EDT 2011


great Alvin
thanks I will try that approach


On Wed, Sep 7, 2011 at 4:14 PM, Alvin Yap <alvinyapvfx at gmail.com> wrote:

> Hi Zoran,
> For rotating objects, my experience is to have the static geometry inside a
> Geo Object, with the animation on the geo object.
>
> Bringing it into dops with say, the static object dop, (making sure
> deforming object is off), you should be able to get an animated collision
> rbd, but with the sdf constant yet rotating as it's acquiring the
> transforms
> from the object level, and not re-creating the sdf per frame.
>
> hth!
>
> Alvin
>
> On Wed, Sep 7, 2011 at 2:54 PM, zoran arizanovic <
> zoran.arizanovic at gmail.com
> > wrote:
>
> > of course
> > but the methods are what confuses me as the blade rotates the divisions
> > adapt from volume box and detail is inconsistent?
> > so what to use by size, not square or what
> > thanks
> >
> > On Wed, Sep 7, 2011 at 3:51 PM, Nick Zutphen <nvanzutphen at live.com>
> wrote:
> >
> > > Hi Zoran,
> > >
> > > Have you considered to build the collision SDF in SOP's before the
> > > animation occurs and then writing it out to disk and using this in
> DOP's?
> > >
> > > Cheers!
> > > Nick van Zutphen
> > > ----
> > > http://www.nickvanzutphen.com
> > >
> > > On Sep 7, 2011, at 3:44 PM, zoran arizanovic wrote:
> > >
> > > > Hi
> > > > i thought its going well but now I need some help:)
> > > > I want to do fluid-sph sim of turbine rotating at about 70rpm
> > > > I wrote all the sdf out but when the blades rotate resolution and
> > > accuracy
> > > > of sdf changes drasticaly on some rotation angles even almost
> > dissapears?
> > > > What would be the best way to tackle this
> > > > or complicated shapes like this
> > > >
> > >
> >
> http://www.technologie-entwicklung.de/Gasturbines/Monocopter/Turbine_Details/turbine_details.html
> > > > cheers
> > > >
> > > > --
> > > > Zoran Arizanovic
> > > > vfx reel : http://vimeo.com/28605448
> > > > http://www.imdb.com/name/nm2902303/
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> > >
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> >
> >
> >
> > --
> > Zoran Arizanovic
> > vfx reel : http://vimeo.com/28605448
> > http://www.imdb.com/name/nm2902303/
> > _______________________________________________
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-- 
Zoran Arizanovic
vfx reel : http://vimeo.com/28605448
http://www.imdb.com/name/nm2902303/



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