Animating WebGL Series

[e-katzenstein]

Not clear if this is a question or a bug: how does one animate a D3FC WebGL shader when underlying data is updated? The typical D3 transitions will update the data, but it will not transition those updates for WebGL series.

More specifics: how does one update a point location in the decorator for the series, and animate that update? The fill color can be updated like so (copied from the epic "Rendering One Million Datapoints with D3 and WebGL"):

const fillColor = fc
  .webglFillColor()
  .value(d => webglColor(yearColorScale(d.year)))
  .data(data);

pointSeries.decorate(program => fillColor(program));

It is not clear to me how to update the point location this way, and if this can be transitioned on screen.

[e-katzenstein]

For more clarity, this library offers a "transition" argument for webgl points: https://github.com/flekschas/regl-scatterplot#scatterplot.draw

I'm curious if this available in d3fc. And if it is, it may be broken.