How to access SteamVR base station location or room size data?

SteamVR tracking APIs are not a part of Varjo SDK. Use Valve's OpenVR API to request the data. 

OpenVR and its documentation is available here: https://github.com/ValveSoftware/openvr  

1. Add OpenVR DLL to your project.
2. Initialize OpenVR session.
3. Request the data you need.

For base station locations refer to: ETrackedDeviceClass.TrackedDeviceClass_TrackingReference For room size refer to: GetPlayArea. 

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