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microsoft / MixedRealityToolkit-Unity

This repository is for the legacy Mixed Reality Toolkit (MRTK) v2. For the latest version of the MRTK please visit https://github.com/MixedRealityToolkit/MixedRealityToolkit-Unity
https://aka.ms/mrtkdocs
MIT License
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How to not load system-global space data on start? #659

Closed SuperShinyEyes closed 7 years ago

SuperShinyEyes commented 7 years ago

I'm trying to build an app like "Young Conker" where you can have your own spatial mapping, isolated from the system-global space data. I looked at SpatialMappingObserver and SpatialMappingManager but cannot find where it's loading from the system.

SuperShinyEyes commented 7 years ago

I tested with "Young Conker" again and it seems like even that game is using system-global space data BUT it can somehow smartly select specific parts of the data.

Here's how I tested:

  1. Run "Young Conker"
  2. Scan new area and save it.
  3. Repeat step 1 & 2 few more times. Check system-global space size. They get larger and larger in each iteration.
  4. Now delete your system-global space from Settings.
  5. Run "Young Conker"
  6. Try to load saved spaces.
  7. None of the saved spaces will be usable.

Here's my understanding about spatial mapping logic in HoloLens:

Am I understanding correctly?

thebanjomatic commented 7 years ago

More or less sounds correct, its also worth noting that the spatial mapping / understanding technology from Conker and Fragments has been made available in the HoloToolkit: https://github.com/Microsoft/HoloToolkit-Unity/tree/master/Assets/HoloToolkit-Examples/SpatialUnderstanding

https://developer.microsoft.com/en-us/windows/mixed-reality/case_study_-_expanding_the_spatial_mapping_capabilities_of_hololens

jessemcculloch commented 7 years ago

Just one correction. When you say all scanned data will be shared by all other apps, that's not quite correct. The mesh that is created by mapping can be manipulated or changed in app, which you obviously would not want to happen in your other apps. I recommend you look at this post in the forums for the best explaination - https://forums.hololens.com/discussion/comment/8737#Comment_8737

SuperShinyEyes commented 7 years ago

Thank you. It's weird that this developer device is so limited. It limits academic research possibility hugely.