XSI Constraints Problem 2005-04-15 - By Nicolas Langlois-Demers
Back
Victor,
You cannot constraint a Ref Model object (not even a model object) to something
else. XSI will behave the way it does now if you do so. You can only constraint
an object that is under the parent model object to something else.
Here's some guideline of a sample model/rig and what to constarint
-Model (can't constarint this)
-ScalingFactor (could constraint this but not wise)
-GlobalSRTNull (could constraint this but not wise cause you want to be
able to reset your GlobalSRT)
-GlobalSRT (this is what you should constraint)
-Rig
-Meshes
Nicolas Langlois-Demers
3DTD2
Hybride
-- -- Original Message -- --
From: Victor Grant
To: xsi@(protected)
Sent: Friday, April 15, 2005 2:26 PM
Subject: XSI Constraints Problem
--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
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=iso-8859 (See http://iso-8859.ora-code.com)-1">
<META content="MSHTML 6.00.2800.1106" name=GENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=#ffffff>
<DIV><FONT face=Arial size=2>Victor,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>You cannot constraint a Ref Model object (not
even a model object) to something else. XSI will behave the way it does
now
if you do so. You can only constraint an object that is under the
parent model object to something else.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Here's some guideline of a sample model/rig and
what to constarint</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>-Model (can't constarint this)</FONT></DIV>
<DIV><FONT face=Arial size=2> -ScalingFactor (could
constraint
this but not wise)</FONT></DIV>
<DIV><FONT face=Arial size=2>
-GlobalSRTNull (could constraint this but not wise cause you want to be able to
reset your GlobalSRT)</FONT></DIV>
<DIV><FONT face=Arial size=2>
-GlobalSRT (this is what you should constraint)</FONT></DIV>
<DIV><FONT face=Arial size=2>
-Rig</FONT></DIV>
<DIV><FONT face=Arial size=2>
-Meshes</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Nicolas Langlois-Demers</FONT></DIV>
<DIV><FONT face=Arial size=2>3DTD2</FONT></DIV>
<DIV><FONT face=Arial size=2>Hybride</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>
</FONT></DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT:
#000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">-- -- Original Message -- -- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=victor@(protected) href="mailto:victor@(protected)">Victor Grant</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=xsi@(protected)
href="mailto:xsi@(protected)">xsi@(protected)</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, April 15, 2005 2:26
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> XSI Constraints Problem</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>
<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></BLOCKQUOTE></BODY></HTML>
|
|
