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

Lucio Flores dogboy_l at yahoo.com
Fri Aug 15 17:30:24 EDT 2008



This was a big problem for me. 

So when I import the geometry into DOPs, I first translate the geometry to the origin. Then, when I specify the initial position in DOPs, I do a point expression to access the center of mass for that object before I translated it to the origin. 


--- On Fri, 8/15/08, zhang xiao <zhangxiao6776 at gmail.com> wrote:


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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