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

Andrew D Lyons tstexture at gmail.com
Fri Aug 15 16:50:37 EDT 2008

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
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... ?


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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