Features on terrain: clamp to ground

[klokan]

Cesium is not yet ready for features clamped on top of terrain out of the box.

“Clamp to ground” is not yet implemented - see: CesiumGS/cesium#526
and point “Render polygons / polylines” on terrain.

Features in 3D can be rendered on absolute altitude available as part of the individual feature nodes only (provided from server).

Polygons on terrain are impossible right now.

This work with polygons on terrain is to be postponed until Cesium supports clamped to terrain functionality.

[ZiglioUK]

Not sure where to comment, since this issue is Closed (but why?). Anyway, could this help?
https://groups.google.com/d/msg/cesium-dev/ZRfr6RPtelQ/TOzHQX72hI0J

[gberaudo]

The issue looks open to me.
Your link point to a workaround; we will wait for official and robust support in Cesium.
This month release of Cesium added Point and Label clamped to the ground.
Other geometries are under development.

[ZiglioUK]

Thanks Guillaume! It was nice to meet you in person at FOSS4G :-D
Are you going to publish your presentation?

PS This issue is indeed still open. I got confused because of it's referenced by other issues that have been closed

[gberaudo]

@ZiglioNZ it was nice talking with you. I pushed my presentation here:
https://github.com/gberaudo/talks/raw/master/2015-foss4g-como/foss4g-como-ol3-cesium.pdf
The same file should be published on the Foss4g website.

[ZiglioUK]

Thanks @gberaudo !