Problems with terrainExaggeration parameter in version > v.1.16

[jacmendt]

I expected some problems with the the terrainExaggeration parameter in cesium versions >= 1.17. I used a terrainExaggeration value of 4.0 in version 1.16 and it works for me. In newer versions, my terrain / imagery isn't display anymore if zooming to higher zoom levels. My area of interest was europe.

I reproduced the error running the sandbox application with this code:

var viewer = new Cesium.Viewer('cesiumContainer', {
    terrainExaggeration: 4.0
});

var terrainProvider = new Cesium.CesiumTerrainProvider({
    url : '//assets.agi.com/stk-terrain/world'
});
viewer.terrainProvider = terrainProvider;

[mramato]

Thanks @jacmendt, this is a known issue that we definitely plan on fixing for our next release (April 1st).

Since this is a duplicate of #3607, I'm going to close this issue. Thanks again.

[pjcozzi]

@jacmendt this was fixed in #3734 and will be released in Cesium 1.20 on April 1.

[jacmendt]

@pjcozzi i tested today the new Cesium version 1.20 and the error still exists. The tile loading seems to crash at the greenwich meridian in case of the using of terrainExaggeration > 1. I also tested again the sandbox application described above and could reproduced the error, but I'm not sure if the sandbox application is also using the latest cesium version.

Btw. thanks for the help :)

[mramato]

I can confirm that this is still an issue, but only in specific portions of the Earth (which is why it was probably missed). Use the original sample code and zoom to Dancy, Eure-et-Loir, France in the Geocoder and you'll see it.

@bagnell can you take a look at this?

[pjcozzi]

Thanks for the report, we have a few other things on our plate, but we'll try to look at this before the next release.

[pjcozzi]

@bagnell can you take a quick look to see if this is small enough in scope to make 1.21 on Monday?