CGTalk - elbow rotation

squidlad

12-07-2005, 05:43 PM

does anyone know how i can stop the hand rotating when i adjust a swivel angle? i have one HI solver from the upper arm to the wrist, and a point helper controlling the swivel angle, but when i move the helper around, the hand rotates with the arm.
http://img403.imageshack.us/img403/1448/swivel3qi.th.jpg (http://img403.imageshack.us/my.php?image=swivel3qi.jpg)
im using max 7

thanks in advance, and remember, a shiny new donkey for whoever brings me the head of Colonel Montoya

marktsang

12-07-2005, 06:12 PM

there are several ways,

the way you might find best is to use a position constarint to atttach the hand to a wrist bone instead of linking the hand to the forearm

so the chain would be
upper arm -> forearm -> wrist bone (not used in skinning)
ik going from upper arm to wrist bone
then you have a hand bone that is aligned (or not to the wrist bone) and positioin constrainted to it

tutorials that ship with max cover all this and more.. excellent for beginners

mark

squidlad

12-07-2005, 06:46 PM

thanks mr tsang, that worked perfectly

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