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Can you plot out the sims of the objects you do
like and only tweak parameters on the ones that need it?
----- Original Message -----
Sent: Monday, May 28, 2007 8:51 AM
Subject: Re: directing a rigid body
dynamics simulation
Thanks for the script Francois. It seems like as long as
I don't change any values, the sim stays the same. But when I
modify the value of any of the objects, the entire sim changes. My sim is
pretty simple, just a passive floor and 6 objects bouncing to a stop on it.
The objects don't even interact with each other much(depends on how it runs).
For instance, if I change the initial velocity of object A, object B lands in
a different place as before even thought the floor didn't change and the two
objects do not collide.
On 5/25/07, Francois
Lord <francoislord(at)gmail.com>
wrote:
Yeah,
that happens. :-/
I made a little toolbar to help with this (attached,
python).
Just put your objects in a group called 'RBDs'.
The "Plot and
Constraint" button creates a null for each object, plots
the animation
of the object and applies it on the null, and then
constraints the object
to the null.
When you want to make a change, the "Reactivate Sym" button
deletes the
nulls and reactivates the symulation on the objects.
Fairly simple but helps a lot when working with lots of
RBDs.
Byron Nash wrote:
> I'm trying out rigid body dynamics
for the first time on a job. The
> objects are moving in a nice
fashion now that I have everything
> tweaked. The problem I'm having
is that every time I run the sim, the
> objects end up in different
places each time. I need to sort of get
> the objects to end in
certain areas for the shot composition. Is this
> just how it is with
RBD or am I missing something. For some reason I
> thought it would
pretty much give me the same sim every time if I
> don't change any
values. I don't have any forces except gravity.
>
>
Thanks,
>
> --
> Byron Nash
> www.armoredsquirrel.com <http://www.armoredsquirrel.com>
--
Byron Nash
www.armoredsquirrel.com
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