Summary: Implement and ship `PointerEvent.altitudeAngle` and
`PointerEvent.azimuthAngle`.
They are in the scope of Interop 2024 Events.
Pointer Events include two complementary sets of attributes to express
the orientation of a transducer relative to the X-Y plane: `tiltX` /
`tiltY` (introduced in the original Pointer Events specification), and
`azimuthAngle` / `altitudeAngle`. These sets of attributes can be
converted each other and we've already implemented `tiltX` and `tiltY`.
So, the new attributes will let web apps know the computed value from
`tiltX` and `tiltY` if a pointer event is fired to represent a user input.
Bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1656377
Spec:
<https://w3c.github.io/pointerevents/#dom-pointerevent-altitudeangle>,
<https://w3c.github.io/pointerevents/#dom-pointerevent-azimuthangle> and
<https://w3c.github.io/pointerevents/#converting-between-tiltx-tilty-and-altitudeangle-azimuthangle>
Other: Chrome has already implemented them, Safari has not done yet.
Web-platform-tests:
<https://wpt.fyi/results/pointerevents/pointerevent_tiltX_tiltY_to_azimuth_altitude.html?label=experimental&label=master&aligned
<https://wpt.fyi/results/pointerevents/pointerevent_tiltX_tiltY_to_azimuth_altitude.html?label=experimental&label=master&aligned>>
--
Masayuki Nakano <[email protected]>
Working on DOM, Events, editor and IME handling for Gecko
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