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HoloLens large 3d model positioning
Hi!
I want to show very large 3d model (treat it as large building) in the augmented reality using HoloLens.
I understand the hardware limitations here, so suppose the model would not contain much polygons.
I've checked the docs and my vision of Hololens usage that I could prepare 3d model using Blender, then export it and load 3d model using Unity.
Then I would be able to walk near the model shown (go around, for example), and enter inside (using gaps or doors).
I believe. this feature is provided by HoloLens out-of -the-box (with the minimum of coding, of course).
Could it be any issues here? Is my concept right?
My concerns are most about positioning and navigation, as HoloLens has no GPS and the model size is large, as I told.
I want some answers from real Hololens device owners.
I still waiting for my ordered kit to be delivered, so I could not check it myself for now.
But the answer is important for me because I need to have workaround for the case of some issues, or maybe completely change the concept.
Best Answer
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Please see my secret worlds post. You can download the project and try this out yourself in 15 minutes.
This post & project demo 2 things:
1. HoloLens can indeed accept pretty large virtual worlds out of the box. This world is in the neighborhood of 60m X 55m, but it could be quite a bit larger. I haven't found the breaking point. This world is also very low poly. I will say we loaded this in my company's lobby / cafeteria which is quite large, and we walked 50-60 feet in several directions and tracking was excellent.
2. You can move the camera by nesting it in an empty game object and transforming that objects position with or without motion (effectively achieving the same effect as swapping camera).I haven't tried switching to multiple cameras with the HoloLens, are there any known performance impacts, best practices, or other concerns with multiple cameras specific to the HoloLens + unity?
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Answers
hi @therealmasel you can load model to calling either RestApi or else AssetBundle .
Hi, Ankit09_Sangani.
Thank your for reply.
As I wrote, my concerns are most about positioning and navigation, as HoloLens has no GPS and the model size is large, as I told.
So assume I've already loaded the model of large building. Would be any issues of navigation inside it?
Could I walk around it?
hi @therealmasel
for navigation you can set multiple camera and change camera with the used of Voice Command Like Go to First Floor etc.
Hi, @Ankit09_Sangani!
Do you mean that I'll have to split large 3d model into small chunks (mini models) and switch between them? For example: the dining room, the bedroom, bath,...
My concern is still about tracking loss.
Hi, @therealmasel
No, You can Load full large scale 3d model and set multiple camera on Model. And set camera positioning in dining room,bedroom etc. write script change camera on voice Command may be then you can't tracking loss.
Thanks,
Ankit Sangani
Please see my secret worlds post. You can download the project and try this out yourself in 15 minutes.
This post & project demo 2 things:
1. HoloLens can indeed accept pretty large virtual worlds out of the box. This world is in the neighborhood of 60m X 55m, but it could be quite a bit larger. I haven't found the breaking point. This world is also very low poly. I will say we loaded this in my company's lobby / cafeteria which is quite large, and we walked 50-60 feet in several directions and tracking was excellent.
2. You can move the camera by nesting it in an empty game object and transforming that objects position with or without motion (effectively achieving the same effect as swapping camera).
I haven't tried switching to multiple cameras with the HoloLens, are there any known performance impacts, best practices, or other concerns with multiple cameras specific to the HoloLens + unity?
https://www.billmccrary.com/
@Ankit09_Sangani , @BillMcCrary
thank you.