Float Parameters

Float Parameters (typically Floating-point numbers, shortened as Floats) are a parameter type available for use in VRCFaceTracking.

Floats are the native parameter type of all parameters in VRCFaceTracking, for the very simple reason that all tracking interfaces return float values for their tracked expressions.

Thus, Floats are the simpler and more direct parameter type to use for a face tracking parameter. If it wasn't for VRChat's avatar expression synced bit limit, we would only need Float parameters!

Float parameters are typically driven with a Blend Tree, such as the one pictured below:

There are multiple Float parameters that are given in an X and Y distinction, and using a 2D Blend Tree is the best way to control these parameters. Here is an example of how you would drive such a parameter: