Commits on Jan 4, 2024

1. Add automation support via WebDriver …

   This PR integrates with the automation concepts defined in
   https://w3c.github.io/sensors/#automation to allow providing motion or
   orientation readings via virtual sensors through the WebDriver extension
   commands defined there.
   
   IMPORTANT: This does not mean that this specification requires
   implementations to support the Generic Sensor API specification and its
   derived specifications. Only the Automation section is being referenced, and
   when necessary some algorithms and definitions are being duplicated here,
   especially for Device Motion automation.
   
   The definitions of the "accelerometer", "linear-acceleration", "gyroscope",
   "absolute-orientation", and "relative-orientation" virtual sensor types have
   been moved here from their original specifications. As suggested in #124 and
   similarly to what has been discussed in PRs #121 and #123, since this
   specification is further along the Rec track and is implemented by more
   engines, it makes sense to have the exported definitions here and reference
   them from the other specs instead.
   
   Device Motion:
   - Readings are controlled via the "accelerometer", "linear-acceleration" and
     "gyroscope" virtual sensor types.
   
   Device Orientation:
   - The "absolute-orientation" and "relative-orientation" virtual sensor types
     are defined in this specification, along with a parsing algorithm that
     reads alpha, beta and gamma doubles.
     Compared to device motion, however, we have an additional problem in that
     device orientation data is provided in Euler angles and Orientation Sensor
     uses quaternions.
     The idea is to parse readings by reading alpha/beta/gamma keys from the
     WebDriver extension command and use them in the "fire orientation event"
     algorithm and skip using quaternions altogether. The Orientation Sensor
     spec can then augment the "parse orientation data reading" algorithm with
     the required steps to both 1) accept a "quaternion" key in the WebDriver
     extension command (and convert it to Euler angles as well) and 2) derive a
     quaternion from the alpha/beta/gamma Euler angles.
   
   Fixes #122.

   

   rakuco committed Jan 4, 2024
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