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link the virtual object to a car
Best Answer
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OptionsHoloSheep mod
The Health & Safety warnings that come with the device do specifically mention not to use the device while driving:
Do not use HoloLens when a full field of view and attention are needed for safety, such as while operating a vehicle or doing other potentially hazardous activities.
If you are a passenger in the car, it might depend on whether you are looking outside or inside the car when the app initializes and sets the main world anchor. It would also depend if you first did a significant scan of the interior and then kept enough of the interior of the car in view of the sensors so that the device was potentially able to keep track of itself in that space. For example it might work better from the back seat where the seats are in view.
Then there might also be an issue if the gyroscopes play a significant role in the HPU's calculation of movement within the world where the acceleration of the vehicle might trick the device into thinking it is moving further and faster than the sensors indicate.
Have you tried using the device as a passenger in the back seat?
Windows Holographic User Group Redmond
WinHUGR.org - - - - - - - - - - - - - - - - - - @WinHUGR
WinHUGR YouTube Channel -- live streamed meetings5
Answers
@kzhang3
The Health & Safety warnings that come with the device do specifically mention not to use the device while driving:
If you are a passenger in the car, it might depend on whether you are looking outside or inside the car when the app initializes and sets the main world anchor. It would also depend if you first did a significant scan of the interior and then kept enough of the interior of the car in view of the sensors so that the device was potentially able to keep track of itself in that space. For example it might work better from the back seat where the seats are in view.
Then there might also be an issue if the gyroscopes play a significant role in the HPU's calculation of movement within the world where the acceleration of the vehicle might trick the device into thinking it is moving further and faster than the sensors indicate.
Have you tried using the device as a passenger in the back seat?
Windows Holographic User Group Redmond
WinHUGR.org - - - - - - - - - - - - - - - - - - @WinHUGR
WinHUGR YouTube Channel -- live streamed meetings
I have this same area of interest and have been experimenting a bit. The application in question will be a machine with an operator in a cab, but same concept. What I have observed is this:
As you thought, @HoloSheep , the gyros definitely seem to play a role in causing problems for this scenario.
I'm trying to find a way to keep holograms placed inside the cab in place even as the machine moves around. I looked at attached frames of reference but this appears only available in the DirectX implementation and not directly as an option in Unity C# scripts (with some work could be made to work together I suppose but might be easier to just do something in C# with coord transforms etc.).
Would love to hear ideas on how to make this happen. Have been looking at Vuforia objects but from what people are saying there is an unacceptable lag in the position updates there. I have a 3d model of the "stock" cab that could be used but unsure how to accurately relate that to the user viewpoint especially if the idea is to use that model instead of the observed spatial landscape. Seems like you'd still have to make some observations to orient it correctly etc.