in the Julia project Modia3D we generate three.js JSON files for animation export. This works fine for primitive geometries like BoxGeometry,ConeGeometry... However, I do not succeed in exporting ExtrudeGeometry, e.g.
three.js can serialize/deserialize ExtrudeGeometry since r93. Here is a live example that demonstrates a complete round-trip: Edit fiddle - JSFiddle - Code Playground
I’m not sure but id does not look like like the three.js JSON format.
Yes. If you check out the logged the serialized JSON you will see that the shape is saved as an array of LineCurve objects.