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Node for Autodesk Maya to create posed-based output values for driving relationships.
The weightDriver node offers two modes for creating driving relationships.
This is a cone based pose reader to avoid rotational issues due to Euler rotations. While simple rotation dependencies can be mostly solved with expressions or set driven keys more elaborate setups are bound to fail when two or more axes are involved. A vector angle reader is usually a good and inexpensive solution in these cases.
For more complex setups the RBF mode delivers the best way of interpolating an arbitrary number of values based on any number of poses. This way it’s possible to basically drive anything from anything. A common application for a RBF solver is the blending of corrective shapes or blend shapes in general. Especially when it comes to problematic areas like the shoulder, wrist or hip area. The RBF mode can easily blend between different corrective shapes based on the orientation of the joint.
The RBF mode of the weightDriver is also supported through the more advanced RBF Manager of the mGear rigging framework.
The weightDriver node is also part of the SHAPES plug-in, our advanced blend shape editor for Maya. If you have SHAPES installed you already have the weightDriver node available. The difference between the standalone RBF mode and the RBF mode used in SHAPES is that the former has single-value based poses whereas the latter uses matrix-based poses.