Spherical Radial Basis Function Driven Corrective Shapes

This shows an implementation of a Spherical Radial Basis Function node. SRBF is commonly used in lighting calculations like this http://www.cse.cuhk.edu.hk/~ttwong/papers/srbf/srbf.html.  I am using SRBF here to track joint position and orientation. This gives me a weight value per target that I can then use to drive corrective shapes. Each target point has its own falloff and twist attributes to adjust the triggering sensitivity.  The rig is my free quadruped rig, Nico, which you can download here:https://www.creativecrash.com/maya/downloads/character-rigs/c/nico.  The download does not include the SRBF node since it requires a plug-in.

Maya Technology Demos

More technology demos!

First is a dynamic transform node. The node is applied to various joints and IK handles. The node can also drive arbitrary attributes so they behave dynamically as well.

Next is a custom jiggle deformer. The reasons why I created my own jiggle deformer as opposed to using Maya’s jiggle deformer is because of speed and ease of use. Mine runs a lot faster and is easier to use.

And last is my own wrap deformer. As you can see, mine gives a cleaner result. It also has the ability to rebind vertex associations so if vertices are wrapped to the wrong section of the driving mesh, you can rebind them to be driven by another section of the mesh.

Stay tuned for more!

GPU Blend Shapes

I wrote this last week.  It’s a Maya blend shape deformer that runs on the GPU.  The sample shown is a 30,000 vertex mesh with 1000 targets.  It runs 32x faster than Maya’s blendShape node on a Geforce 230M notebook GPU. A 40,000 vertex mesh with 1500 targets ran 40x faster.

Python Workshop Notes

A few months ago, I taught a Python scripting workshop at my old school, Expression College, aimed at introducing students to the Python scripting language and using it in Maya. It was a one day workshop so everything was condensed and to the point. There’s no history of Python section or best practices section. The goal of the workshop was to get students familiar with Python so they could learn how to read and write basic scripts and also how to further their studies. I wrote a whole slew of notes to hand out to the students and ever since then, they’ve just been sitting on my computer…that is until now! I’ve ported over my notes onto my website and they are now free to view. You can find them here or in the Tutorials sections.