XSI Constraints Problem 2005-04-15 - By Victor Grant
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--A co-worker asked me to foward this to the list--
Hey,
I'm having to animate on a project using XSI, but this is the first time I've
used the program. I've run into a very strange problem which maybe someone has
seen before and knows the solution...I hope.
Here's the situation. I have several creatures attacking a character, about 10.
Everything is a refrence model, so there is one main character model and ten
creatures from the same model. Each model is attached to a null so I can
globally place them. In a good setup, this null or control would have been in
the model, but it was not, so I added something I could use and adjust. I have
no control over the models btw.
Some of the creatures need to bite and attach themselves to the character,
inherting the characters motion since he is flailing around. To do this, I am
using a pose constraint on the creatures and blending it to zero when they are
off, and one when they are on. The rest are just moving about and attacking.
It all appears to work fine. I even make playblasts with the animation showing
them jumping and attaching themselves. In other words, it works, there are no
problems. So I save and keep going. However, when I reopen the progam and load
the scene back up, the creatures that were constrained are not in the correct
location. It is as if they have been offset. They still have the animated
constraint, but they are not in the right location. Moving the global placer
null has no effect for the constrained section either.
Here's the kicker. If I delete the constraint, reposition the global placer, do
not reapply the constraint, save, close program and reopen reload, the creature
will not be where I put him. Every other creature is in the right location, the
ones who have never been constrained, but this one seems to be permanently
broken. He's not even constrained anymore but he is still being offset!
I can fix this all I want, and it will look fine in the program. But once I
close the scene and reopen it, it will be broken. This is very frustrating
because I have no idea how to fix it or why it is even doing this.
The refrence models have not changed, they are the same files as when I started.
Any thoughts or insights would be greatly appreciated.
-- ---- ---- ---- -----
Victor Grant
CafeFX
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<DIV>--A co-worker asked me to foward this to the list--</DIV>
<DIV> </DIV>
<DIV>Hey,</DIV>
<DIV>I'm having to animate on a project using XSI, but this is the first time
I've used the program. I've run into a very strange problem which maybe someone
has seen before and knows the solution...I hope.<BR><BR>Here's the situation. I
have several creatures attacking a character, about 10. Everything is a
refrence
model, so there is one main character model and ten creatures from the same
model. Each model is attached to a null so I can globally place them. In a good
setup, this null or control would have been in the model, but it was not, so I
added something I could use and adjust. I have no control over the models
btw.<BR><BR>Some of the creatures need to bite and attach themselves to the
character, inherting the characters motion since he is flailing around. To do
this, I am using a pose constraint on the creatures and blending it to zero
when
they are off, and one when they are on. The rest are just moving about and
attacking.<BR><BR>It all appears to work fine. I even make playblasts with the
animation showing them jumping and attaching themselves. In other words, it
works, there are no problems. So I save and keep going. However, when I reopen
the progam and load the scene back up, the creatures that were constrained are
not in the correct location. It is as if they have been offset. They still have
the animated constraint, but they are not in the right location. Moving the
global placer null has no effect for the constrained section
either.<BR><BR>Here's the kicker. If I delete the constraint, reposition the
global placer, do not reapply the constraint, save, close program and reopen
reload, the creature will not be where I put him. Every other creature is in
the
right location, the ones who have never been constrained, but this one seems to
be permanently broken. He's not even constrained anymore but he is still being
offset!<BR><BR>I can fix this all I want, and it will look fine in the program.
But once I close the scene and reopen it, it will be broken. This is very
frustrating because I have no idea how to fix it or why it is even doing
this.<BR><BR>The refrence models have not changed, they are the same files as
when I started.<BR><BR>Any thoughts or insights would be greatly
appreciated.</DIV><!-- / message --><!-- sig --></FONT></DIV>
<DIV><FONT face=Arial size=2>-- ---- ---- ---- -----<BR>Victor
Grant<BR>CafeFX</FONT></DIV></BODY></HTML>
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