Making elements not selectable with click-through

[MarcinKoziuk]

Description 📝

Hi there!
It would be nice if we could instruct items to stay visible but not clickable, so that we can still select what’s behind/inside them.

An example use case is visualizing IfcSpaces transparently, while still being able to select items inside or behind the IfcSpace (e.g. a floor or installation).

I tried excluding via highlighter.selectable; it does stop them being selected but it doesn’t allow clicking behind the element.

I suppose the crux is that picking goes through the GPU (not real raycast), so there's only ever the frontmost item to work with.

Suggested solution 💡

• Ability to use raycasting for clicking, preferably with a list of items instead of the foremost one (*).
• Ability to have an element as non-selectable:
  • can be some kind of boolean or set
  • or via a lambda whether item must be included
  • or manually filtering the list of items, see (*)

Making it configurable can make sense, as it may impact performance.

Alternative ⛕

No response

Additional context ☝️

No response

Validations ✅

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• Check that there isn't already an issue that requests the same feature to avoid creating a duplicate.