The Mixed Reality Forums here are no longer being used or maintained.
There are a few other places we would like to direct you to for support, both from Microsoft and from the community.
The first way we want to connect with you is our mixed reality developer program, which you can sign up for at https://aka.ms/IWantMR.
For technical questions, please use Stack Overflow, and tag your questions using either hololens or windows-mixed-reality.
If you want to join in discussions, please do so in the HoloDevelopers Slack, which you can join by going to https://aka.ms/holodevelopers, or in our Microsoft Tech Communities forums at https://techcommunity.microsoft.com/t5/mixed-reality/ct-p/MicrosoftMixedReality.
And always feel free to hit us up on Twitter @MxdRealityDev.
Masking Areas of the Spatial Mapping
Say I want to be a passenger in van going on a safari ride at a very low speed and I know the location of each of the animals. Could I mask the windows of the vehicle so the spatial mapping ignored the window and only mapped the frame?
Or could I place the interior of that van in the Hololens and have it lock onto the surrounding world with world anchors?