Bone lag in XSI
This is a quick technique i use for creating bone lag in XSI for wings, tails, ears, Etc. start by creating a bone in the right viewport running left to right, then create a second bone at its end.
now constrain the second bones root to the end effector of the first bone for positioning excuse the crude model, then remove the constraint now make the root of the second bone the child of the end effector of the first
and a schematic view
ok now we have to create a super simple script of one of the many undocumented script operators
open the script panel and type this in
ApplyOp "Spring" , , 2
before you click run select the end effector and then the root (the order of selection is very important) of the first bone in that order repeat the process for the second bone, both bones might have to be realligned to the wing or geometry use the root of the first bone and rotate it back into allignment you should have some lag now test by moving the first bones root up and down,
you can adjust the bone lag in the bones PPG right here
go ahead and envelope the the bones and adjust the spring op until you are happy, hope this helps, its my first attept at a tutorial.
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