Perform calculation on model before unblocking Suspense?

[Heilemann]

I'm using useLoader to fetch a model. I then need to measure that model's meshes' bounding boxes and scale it before it renders (due to a useSpring animation I've got set up, this seems like the cleanest way to do it). Is that possible? Right now I'm doing the calculations in a useMemo but that doesn't run until after render it seems (so the models load and then animate to the new scale).

[joshuaellis]

To "block" suspense I believe you have to return a promise from your component. This is what use-asset does (it's an internal pkg). So you could look until returning a promise until said calculations have been done?

[drcmda]

useMemo runs before render, that could be a good place to do it, especially if you expect a value back. another such place would be useLayoutEffect which also comes before render (to screen).