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Use a real room model to position holograms

GPDSGPDS ✭
in Questions And Answers

Hi everyone :)

Let's suppose that I have created and saved the model of my room.
I'm working with Unity.

My question is:
How I am able to know the exact position where I am, related to the room model?

Thing is that I need to save an hologram position at a specified point. After restarting the application, I need to show the hologram at the exact position.

How can I achieve it?

Best regards

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Answers

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    F4QVR3DF4QVR3D ✭
    edited April 2017

    Hi GPDS,
    I ran into something very similar during development - and it is not easy.
    The following approach does not anwser your first question but is a solution for your second question:

    1. Use a setup mode or "Placement" mode when the app is running (the first time). The Holograms 101 Chapter 6 does exactely that.
    2. Once the hologram is positioned correctly, create a WorldAnchor to pin its location and store it in the WorldAnchorStore. Note: You should create a unique id (a string) for your world anchor that matches your object or hologram.
    3. When you start the app again, load your world anchor from the WorldAnchorStore via its Load method.

    You can safely stop the spatial mapping observer mode after the placement is done. It is only needed during the placement mode.

    Hope this helps!

    Cheers,
    Fabian

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