This is a short note about some experiments I have been doing with using "volumetric light" as the "bars" in a shifted depth gif effect with three.js.
The demo visualization using this effect is at https://learnforeverlearn.com/splitdepth/.
The "volumetric light" is based on the work of Jerome Etienne (https://github.com/jeromeetienne/threex.volumetricspotlight) using 3D cylinders.
There are many other properties of the visualization that can be tweaked via the (hideable) controls, including switching back to "simple" bars whose opacity can be varied.