Allow interactively picking the rotation center

[greschd]

📝 Description of the feature

When working with models whose dimensions are very unequal (e.g. a long tube-like model), it is important to be able to accurately set the rotation/zoom center.

Here's a video of a similar feature in Ansys Composite PrepPost (middle click changes rotation center [1]):

Screen.Recording.2024-08-23.110859.mp4

[1] it should be noted that middle click may not be the best hotkey, since it's often unavailable on Laptops. Maybe a "click a button - select new rotation center" flow would be more appropriate here

💡 Steps for implementing the feature

No response

🔗 Useful links and references

No response

Note

Before contributing and starting any work, please make sure you agree with the CLA and sign it in your PR.

[ahernsean]

Don't force one particular UI methodology (like middle click or one fixed button). Make setting the rotation center be an API call that users can then hook up as they wish.

[greschd]

Agreed; but I think we still ought to provide a sensible default experience. I mean, this goes for all interactions, right?

The video was just meant to showcase "set rotation center via mouse picking".

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[AlejandroFernandezLuces]

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