These are some examples of bi-directional communications between python and javascript on Google Colab: https://colab.research.google.com/notebooks/snippets/advanced_outputs.ipynb
How can I get this simple three.js demo working in Colab? https://threejs.org/examples/webgl_buffergeometry_lines.html
The source code seems really simple, but I can't get it working in Colab.
Can we also send updated BufferGeometry data (efficiently, in binary form) from python numpy array to three.js?
Here's the main part that I change
import * as THREE from 'https://unpkg.com/three?module';
//import Stats from './jsm/libs/stats.module.js';
I import THREE from unpkg, and remove the Stats part.
Here's a working notebook.
If you need to get data in THREE from Python, there are 2 difficult ways.
invokeFunction: see these 3 examples. The limitation is that you can pass only JSON data.
proxyPort API: see this solution by @blois and my simplification. You need to start a web server. You can serve binary data by giving a content-length header, as discussed here. Use fetch and arrayBuffer on the receiving end. Currently, this solution seems to not work with Firefox, but it works with Chrome.