[ODE] saving internal joint state

Shaul Kedem shaul_kedem at yahoo.com
Tue Apr 6 13:54:55 MST 2004


Just to make it clear... 

I was not going for a cheap shot at anyone, I am not
an american nor do I know what nasa does in each of
its gazilion centers, just wanted to make sure no one
is using ODE to simulate something where a human being
(or a billion dollars) will be on the balance.

Shaul

--- "Martin C. Martin" <martin at metahuman.org> wrote:
> That's all right, I don't think anything from Ames
> every makes it near 
> real life anyway...  ;)
> 
> Just kidding, but seriously, I don't think the Ames
> Research Center 
> produces flight articles, does it?
> 
> And certainly not ones that only simulate rovers.
> 
> - Martin
> 
> Shaul Kedem wrote:
> 
> > Matthew,
> >  Yes, there were such reports. Search google for
> [ODE]
> > and you'll probably find some, there were couple
> of
> > emails explaining how to do that.
> > 
> >  btw, seeing you are from nasa.. you do know ODE
> is
> > *not* supposed to go into any "real life"
> simulation,
> > right ? (I am just saying this so nobody will get
> > hurt, u know..)
> > 
> > Best,
> > Shaul
> > 
> > 
> > 
> > --- "Matthew D. Hancher" <mdh at email.arc.nasa.gov>
> > wrote:
> > 
> >>This is related to a question I asked earlier, but
> >>viewed from a
> >>different angle.
> >>
> >>Suppose you want to take a snapshot of a running
> ODE
> >>simulation, so
> >>that you can go back and have it replay *exactly*
> >>from that point.
> >>This requires saving some internal joint state,
> but
> >>there does not
> >>appear to be any straightforward way to reload
> that
> >>state (or even get
> >>at all of it).  For instance the anchor points of
> a
> >>ball joint may be
> >>slightly separated, but dJointSetBallAnchor()
> always
> >>makes the two
> >>anchor points coincident.
> >>
> >>Am I missing something here?  Comments on the Wiki
> >>suggest that 
> >>some people do perfect saves/reloads; how did you
> >>approach this?
> >>
> >>mdh
> >>
> >>Matt Hancher
> >>NASA Ames Research Center
> >>Official: mdh at email.arc.nasa.gov
> >>Personal: mdh at media.mit.edu
> >>
> >>_______________________________________________
> >>ODE mailing list
> >>ODE at q12.org
> >>http://q12.org/mailman/listinfo/ode
> > 
> > 
> > 
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