However, this is a great premise for rigging problems solving in general, and something that Maya is accommodating – where often times you can use Maya nodes in create ways other than their intended purpose.
FACEWARE is a performance-driven animation technology for the film and games industry which utilizes a marker-less video analysis technology and artist-driven performance transfer toolset for facial animation.
Marco Giordano writes: i highly recommand to have a good understanding of maya rigging before watching this tutorial ) Hello everyone in this quick tutorial I’ m showing how to set up a wire deformer for a jaw. Since I used the same tecnique I explained before in other tutorials and then customized more , I did not go over again on the “old” stuff , so I highly suggest to watch the other tutorials about the wire deformer,which they can be found on my channel here on vimeo. Enjoy
EDIT: Later on I figured out parent constraint doesn’t always give the wanted behaveior if there is more then one controll between the parents so I switched to a node set up that can be explained with this expression :
(I’m a fan of maya nodes over the expressions so use nodes! 
)
child.tx = (parent1.tx*0.33 + parent2.tx*0.66);
in case you used my script and scaled the controller to fit the rig . there is an attribute called “controllerInfluence ” on the main controller group that scale or reduce the influence of the controllers on the wire deformer .
So if you scaled you controller you need to fix the expression like that
child.tx = (parent1.tx*0.33 + parent2.tx*0.66)*controllerInfluence ;
and you need to make same expression in order to work for ty and tz.
Hope it helps
Grecco Writes: Just wanted to show everyone a very quick and easy way to get a key-able depth of field (DOF) pass in Maya 2012. If you wish to key the OutMax attribute (The “End” of the DOF) simply key the corresponding locator that the distance tool created. Remember to Parent constrain the 1st locator to the camera so that it follows your camera. You can also connect the OutMin to a separate distance tool if you wish using the same technique.
Ingo Clemens Writes: This tutorial is about how to transfer a custom rig including animation from Autodesk Maya to a game engine such as unity. The main problem for this process is that most of what makes up a character rig, such as controls, constraints, connections, expressions will not always get properly imported into the game engine. One way to get around this is to build a rig that includes only the features that can be read by the game engine, which are usually joints and maybe ik controllers. The downside of using such a limited rig for animation is that the animation process itself becomes a real pain because all the nice controls that can make animating a breeze are missing.
Maulik Kataria writes: When you constrain a transform node using Maya’s constraints, it stops inheriting transformations from its top hierarchy. However, if you just connect (for example) translation attributes directly or using simple arithmetic nodes, the connected node continues to inherit transformations from its parent. The difference is because of how a constraint calculates the final output
