[sdw] WebVMT & MapML: Shared goals (#1273)

Malvoz has just created a new issue for https://github.com/w3c/sdw:

== WebVMT & MapML: Shared goals ==
FYI: The [Use Cases and Requirements for Standardizing Web Maps](https://maps4html.org/HTML-Map-Element-UseCases-Requirements/) identifies several capabilities that may relate to synchronizing video to map presentation. I've opened an issue for the use case(s) of synchronizing audio/video to map presentation: https://github.com/Maps4HTML/HTML-Map-Element-UseCases-Requirements/issues/248.

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WebVMT states:

> It offers presentational control of the map display, e.g. pan and zoom, and annotation to highlight map features to the viewer, e.g. markers and labels.

These (including many of the [planned features](https://w3c.github.io/sdw/proposals/geotagging/webvmt/#plannedfeatures)) are features that MapML is intending to standardize (based on the requirements concluded in the UCR for Standardizing Web Maps).

Due to shared goals I think it'd be appropriate for WebVMT to include an informative [reference to MapML](https://www.specref.org/?q=mapml), perhaps [in the note on UAs handling rendering](https://w3c.github.io/sdw/proposals/geotagging/webvmt/#h-ednote) (as UA handling of map rendering is _the_ goal of MapML).

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https://github.com/w3c/sdw/issues/1019#issuecomment-373758043:

> As map rendering is not supported in user agents currently, there is a more general question of how to handle the transition if they do support it in future, which is probably beyond the scope of this project, though still worth discussing in a separate thread.

Is there a polyfill available for WebVMT? The Maps for HTML CG could possibly [experiment](https://maps4html.org/experiments/) with the [`<mapml-viewer>`](https://github.com/Maps4HTML/Web-Map-Custom-Element) custom element (MapML polyfill) for WebVMT integration.

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The [WebVMT longitude setting](https://w3c.github.io/sdw/proposals/geotagging/webvmt/#dfn-webvmt-longitude-setting) is identified by the string "lng", whereas MapML defines the [`lon` attribute](https://maps4html.org/MapML/spec/#attr-map-lon) for the `<map>` element. Should the specs settle on the same, for developer convenience?

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/cc @rjksmith, @prushforth

Please view or discuss this issue at https://github.com/w3c/sdw/issues/1273 using your GitHub account


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Received on Wednesday, 28 July 2021 13:26:56 UTC