 | | | Scripted op refresh | Scripted op refresh 2004-05-06 - By kim aldis
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this is typical behaviour when you have a dependancy cycle. Normaly you
shouldn't need anything to force an update, although sometimes you do. I've
always found it enough to just add a single keyframe on a parameter. This is
the normal way of doing this.
__ __
From: owner-xsi@(protected) [mailto:owner-xsi@(protected)] On Behalf Of
Dan Hope
Sent: 06 May 2004 13:02
To: XSI@(protected)
Subject: Scripted op refresh
I've got a really annoying problem that I can't sort out....
I've set up a scripted op on the "scaling along curve" parameter of a
cylinder deformed along a curve...it goes something like this:
getcurvelength "crvlist", MyLength
Out.Value = MyLength/10
I then have a variable with an expression "Fc" set to force an update of the
script at every frame.
My problem is that it appears to evaluate the expression when exiting the
frame, meaning that the length of the cylinder is always one frame behind
the curve. How do I get them to be in sync?
Bearing in mind this is my first scripted op, please, be gentle....none of
this "personally I'd script it better" please....you know who you are ;o)
Ta
Dan
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<DIV dir=ltr align=left><SPAN class=859325513-06052004><FONT face=Arial
color=#008080 size=2>this is typical behaviour when you have a dependancy cycle
.
Normaly you shouldn't need anything to force an update, although sometimes you
do. I've always found it enough to just add a single keyframe on a parameter.
This is the normal way of doing this.</FONT></SPAN></DIV><BR>
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<FONT face=Tahoma size=2><B>From:</B> owner-xsi@(protected)
[mailto:owner-xsi@(protected)] <B>On Behalf Of </B>Dan Hope<BR><B>Sent:</B>
06 May 2004 13:02<BR><B>To:</B> XSI@(protected)<BR><B>Subject:</B> Scripted
op refresh<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV><FONT face=Arial size=2>I've got a really annoying problem that I can't
sort out....</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I've set up a scripted op on the "scaling along
curve" parameter of a cylinder deformed along a curve...it goes something
like
this:</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Courier size=2>getcurvelength "crvlist", MyLength</FONT></DIV>
<DIV><FONT size=2><FONT face=Courier>Out.Value =
MyLength/10</FONT></FONT></DIV>
<DIV><FONT face=Courier size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I then have a variable with an expression "Fc"
set to force an update of the script at every frame.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>My problem is that it appears to evaluate the
expression when exiting the frame, meaning that the length of the cylinder is
always one frame behind the curve. How do I get them to be in
sync?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Bearing in mind this is my first scripted op,
please, be gentle....none of this "personally I'd script it better"
please....you know who you are ;o)</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Ta</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial
size=2>Dan</FONT></DIV><BR>__ ____ ____ ____ ____ ____ ____ ____ ____ ____ __
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