[Sidefx-houdini-list] pivot(center of mass) for active rbd object in dopnet

zhang xiao zhangxiao6776 at gmail.com
Fri Aug 15 17:12:14 EDT 2008


thanks andrew, I think somehow houdini ignores the transformation on the sop
level when it calculates rbd sims,
if it's on object level maybe it will recognize it, don't know it's a bug or
not though.

On Fri, Aug 15, 2008 at 1:50 PM, Andrew D Lyons <tstexture at gmail.com> wrote:

> Hi Xiao,
>
> It's been a while since I did RBD - but I remember from the last time
> writing a tool to put every group on the origin (after storing per
> group position and orientation in a seperate point group) prior to SOP
> import
> and sdf generation in DOPS, prior to copy DOP putting each group back
> on it's stored point position. I'm not sure if it was to fix what you
> are describing at this point though. Perhaps someone else has a better
> lead... ?
>
> Cheers
>
>
> 2008/8/15 zhang xiao <zhangxiao6776 at gmail.com>:
> > HI:
> > somehow I found out that if you translate your geometry in sop net, when
> you
> > try to set up the
> > rotation in dopnet(say keyframe it), it's still using the world origin,
> and
> > the motion node has a
> > pivot field, I tried to pust $tx $ty $tz to it (thought it's the current
> > position of the rbd object), but
> > seems it's still rotating around the world origin(0,0,0), it's impossible
> to
> > choregraph your rbd
> > animation, anybody has any idea about this?
> > thanks a lot
> >
> > --
> > ------------------------------------------
> > Zhang Xiao
> > VFX artist
> > dreamworks animation SKG
> > glendale, ca 91201
> > usa
> > tel: 8182953965
> > ------------------------------------------
> > _______________________________________________
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> >
>
>
>
> --
> =======================================
> Andrew D Lyons | Digital Artist | http://www.tstex.com
> =======================================
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-- 
------------------------------------------
Zhang Xiao
VFX artist
dreamworks animation SKG
glendale, ca 91201
usa
tel: 8182953965
------------------------------------------



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