RBF Nodes is a node-based RBF solver for Blender. It allows to drive multiple properties with multiple driver values.

RBF stands for Radial Basis Function and is used to approximate or interpolate a given set of values at any defined sample point. RBFs have a wide range of applications and can be very helpful when regular ways of driving values fail in 3D animation. It basically allows the user to interpolate multiple values based on a set of sample values, or poses which are defined by the artist in advance. For standard drivers, such multi-value interpolation is not easily, or even impossible to achieve. Like, a driver in Blender can have multiple input values but only one output target. RBFs can solve multiple output values based on multiple input values.

RBF Nodes has its own node tree to make it independent from any modes and panels. Even though RBFs are commonly used for rigging to drive certain deformation effects it would be a waste to limit it to armatures only. Therefore, you can use it with objects, armatures, shaders and geometry nodes, which makes it very versatile. 

1.2.1 – 2024-11-26
– Fixed an incompatibility issue with Blender 4.3.

1.2.0 – 2024-06-04
– Added a preference setting to set the number of properties which
can be used as drivers or being driven.

1.1.0 – 2023-10-17
– Added compatibility with Blender 4.0.
– Added a language selector with 8 languages.
– Added an error message if stored properties don’t match the
current version of Blender.

1.2.1 (Blender 3.1.0 and later)
1.3.0 (Extension for Blender 4.2 and later)
Limitations

In order to play back or render a scene containing RBF nodes it’s mandatory that the add-on is installed. Since Blender doesn’t offer any outside access to the dependency graph in it’s current state, the evaluation of the RBF nodes needs to get triggered through the add-on. If the add-on is not available the nodes don’t know when to evaluate.

Even though the virtual number of input and output values is unlimited there is an internal limit due to technical limitations of Blender. By default a pose can store 1024 values which are shared amongst driver and driven values. If this value is not sufficient it can be easily expanded by editing the add-ons preferences.

RBF setups which are linked are currently not working due to the linking mechanisms in Blender. We are working on a solution. 

Downloads: show love to dev by purchasing if you can afford it

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Filename:RBF_Nodes_for_Blender_v1.3.0 vfxMed.zip [99 KB]

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