support for KML draped on terrain

CesiumJS
1

Right now, in the cesium specification there is support for KML on terrain, in reality the "clampToGround" attribute inside the altituedMode tag doesn't work.

The solution i found in this forum is a workaround - set the height property of the polygon entity to undefined. The problem is that in other entities such as billboard there is no height property.

Is there a real support for draping KML on terrain? if so, how can i do it?
if not, is there a workaround for the other entities too?

2

You should be able to specify clampToGround : true when loading a KML data source.

Otherwise, billboards do have a heightReference property, which can be set to clamp them to terrain.

Thanks,

Gabby

3

Thanks! It solve the problem.
So ‘altitudeMode’ tag inside the kml wont work? Only setting clampToGround property inside the datasource object?

4

Cesium does support the altitudeMode tag, see this function in the source code.

If you think there may be a bug, please provide a sample KML and a Sandcastle example showing the problem so we can track it down.