View Full Version : scapula problems
04-22-2007, 06:42 PM
I started building a rigyesterday, unfortuantly im kinda in a hurry. So i used a few scripts of highend 3d to hopefully speed some stuff up!
Anyway for the first tiem i have tried to include a scapula control.
Unfortuantly when rotate my scapula control around the IK handle control doesnt follow. Which in it self is not suprsing. So i have tried parenting and constraing the IK control to the scapula control and I get one of two results it either Wigs out completely or it will follow but seem to only trave half the amount of rotation (is this a double transormation issue?)
Is there a good method for implementing a basic scapula control with other controls in the arm? or am i just bieng a twit? :)
If you feel like bieng nice and taking a look ive got the MAYA 7.0 file here (http://forums.cgsociety.org/www.gimbal-lock.net/characterrig.rar)
Just for your information I used a script to create the stretchy IK and to create the back, i forget which exactly
thanks for any help!
04-23-2007, 02:24 PM
Personally I've always just used a simple joint setup with 2 locators, an aim and then an upvector. Drop the aim locator on the end joint of the scapula chain, then just translate it down 2-5 degrees, position the upVector just above the back of the neck and create an aim with upvector. Parenting from here depends on how your hierarchy is structured, I generally parent my aim locator to the clavicle or if I need to simulate more muscle I get fancy with some constraints for a more realistic scapula movement.
04-23-2007, 06:21 PM
ahhh that sounds liek it could work!
one question though whats the up vector? is that a part of the locator node?
04-24-2007, 01:18 PM
The up-vector is part of the aim constraint, it's basically a second locator that I use to drive the orientation of the aim constraint relative to the characters movement. It essentially prevents the scapula from completely freaking out and flipping or twisting in a wrong way. Also allows me to make minor adjustments to fine tune the movement of the scapula :)
You can find the up vector information in the aim constraint options.
04-24-2007, 01:56 PM
ah ok cool
ill give that a try
04-24-2007, 03:14 PM
sorry to be a bit of an idiot but i dont really understand.
Ive placed a locator at the wrist joint (end of scapula chain) and I aim constrain the scapula to that locator?
This didnt seem to have much effect :/
04-24-2007, 03:14 PM
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