pythreejs DirectionalLight() function not making objects render

[mandeepika]

Have been trying around different things and noticed that if we don't use DirectionalLight() function in the code, the objects are able to render properly. On query, I commented out the lines using that function and it works. Same is the case when I try on thebe and ckeditor locally. So I am assuming DirectionalLight() function is creating some conflicts resulting in 'Error Displaying Widget'. (I haven't yet but need to investigate the DirectionalLight() function more).

[moorepants]

Nice find!

[moorepants]

I recommend getting this example (jupyter-book/thebe#262) working in thebe and track the issue there because we are more likely to get help from other people that use/work on thebe. Asking questions to the pythreejs developers in the jupyter discourse, their gitter, or mailing lists is the best way to get help.

[sandertyu]

Source code for DirectionalLight().
Documentation for DirectionalLight().

The source does import ipywidgets, so that is almost certainly the base issue. I'm not exactly sure yet which part of the ipywidgets code is causing the problem though, because there are no render() functions as we know to be problematic.