I recently started learning modelling so I can import it for my ThreeJS project, so I was wondering is it better for performance to use n-gons or to use quads to model object?
At the end of the day they will all boil down to triangles. Triangles are the most universal polygons in 3D graphics.
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In your modeling application it’s fine to work with either though. Whatever makes your life easier as the artist, I think people tend to like quads . When you export to glTF, any quads or n-gons get converted into triangles automatically.
Related guide:
https://cgcookie.com/posts/guide-to-clean-topology#question_2
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It’s also noteworthy that ngons with holes or inward extrusions can lead to errors without sufficient edge supports when exporting to gltf format
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