Compatibility between terrain data and 3D models

CesiumJS
1

I have some
compatibility problems between 3D models and terrain view, does somebody have already
encountered the problem? I add the 3D model in glTF format to the scene with
the code:

            var entity =

viewer.entities.add({

position :

Cesium.Cartesian3.fromDegrees(11.44435814,46.03985842),

                           model : {

                                           uri

: ‘…/…/SampleData/models/Prova/collada3.gltf’,

                           }

});

viewer.trackedEntity
= entity;

And then I
add the terrain view:

var terrainProvider = new
Cesium.CesiumTerrainProvider({

                           url :

‘//cesiumjs.org/stk-terrain/tilesets/world/tiles’

            });

            viewer.terrainProvider =

terrainProvider;

If I don’t
add the terrain view, the model is fixed to its position, but if I add the
terrain view the initial position of the 3d model is offset and it stats moving
with the cursor. Does anybody have any suggestion?

2

Hi Stefano,

Cesium doesn’t have automatic ground clamping yet so you are seeing the model being drawn at height zero under the terrain. Check out sampleTerrain.

Patrick