v2: Add basic 3DOF Index Controller support
Only the "gen1" watchman usb protocol is supported (almost same as vive wand).
Note: Lighthouse v2 data is not properly ignored, the IMU data is only parsed correctly
when controller is not hit by lighthouse lasers.
Supported:
* trigger value
* trigger button
* trackpad x, y
* trackpad touch
* thumbstick x, y
* thumbstick click
* system click
* a click,
* b click
Not supported:
* trigger touch
* touchpad force
* thumbstick touch
* system touch
* a touch
* b touch
* grip squeeze
* finger tracking
This allows transitive dependencies to work easier and improves compatibility.
It takes a little bit more storage at build time, and possibly a little extra time.
This adds a driver for the Vive family of devices based on Philipp
Zabel's ouvrt.
The driver currently only handles the IMU and main board report streams,
but is able to acquire the JSON configuration and utilize it for IMU
calibration as well as distortion configuration.
Not pretty - no filtering on tracking, coordinate system
probably a little bit wrong still, no hemisphere tracking,
but enough to show movement and resizing in hello_xr.
Defines:
* XRT_HAVE_[name] is a external dep indicator.
* XRT_DRIVER_[name] if a internal driver is built.
CMake variables:
* BUILD_WITH_[name] is a external dep indicator.
* BUILD_DRIVER_[name] tells if we should build a specific driver.
