Introduce ImagePlaneDistance Component

[jleibs]

What

• Resolves: Allow specifying camera image plane distance as part of Pinhole archetype #6084

This introduces a new ViewContext that holds onto the state so that we don't need to continuously pass it around everywhere. Additionally, introduces some new helpers to make querying with overrides and fallbacks easier.

We are accumulating more information in the HybridDataResults so that we can now find a fallback provider and resolve fallbacks.

Specifically this makes it possible to now use the DataResult to directly produce a HybridLatestAtResults, which in turn allows you to make calls like get_mono_with_fallback().

For better or for worse, this will eat all manner of promise/deser errors along the way and just get you a data value you can use.

    let results = data_result.latest_at_with_overrides::<re_types::archetypes::Pinhole>(ctx, query);

    let image_plane_distance = Some(results.get_mono_with_fallback());

Checklist

• I have read and agree to Contributor Guide and the Code of Conduct
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  • Using examples from latest main build: rerun.io/viewer
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[github-actions]

Deployed docs

Commit	Link
1f6c977	https://landing-ql9k5n9xc-rerun.vercel.app/docs

[abey79]

Looks good to me, with the caveat that lots of details are still beyond my grasp.

[abey79]

A helper would be nice.

Suggested change

	let visualizer_collection = ctx
	.space_view_class_registry
	.new_visualizer_collection(space_view.class_identifier());
	let Some(view_state) = view_states
	.get(*space_view_id)
	.map(|states| states.view_state.as_ref())
	else {
	return;
	};
	let view_ctx = ViewContext {
	viewer_ctx: ctx,
	view_state,
	visualizer_collection: &visualizer_collection,
	};
	if let Some(view_ctx) = ctx.as_view_context() else {
	return;
	};

edit: I saw elsewhere that you are constructing it slightly differently, so this may not make much sense

[jleibs]

I'm going to come back and do this one on top of the next PR in this stack once I know the different variants of how it needs to get built.

[abey79]

makes sense 👍🏻