How to drape a geojson file using cesium

[vhiguit...@gmail.com]

Hi I want to drape the terrain of geojson file, including lines and polygons, as this link. (https://twitter.com/CesiumJS/status/638821250140254208/photo/1), but it looks that the layer is above the map. Any ideas?. Thanks.

This is my code:

var promise= Cesium.GeoJsonDataSource.load('area.geojson');//Load geojson in the world map
var scene = viewer.scene;

promise.then(function(dataSource) {
viewer.dataSources.add(dataSource);
viewer.zoomTo(dataSource);

//Get the array of entities
var entities = dataSource.entities.values;

for (var i = 0; i < entities.length; i++) {
var entity = entities[i];

var _geometry;
if(entity.polygon!==undefined){
_geometry = new Cesium.PolygonGeometry({
polygonHierarchy : entity.polygon.hierarchy._value
});
}
if(!_geometry)continue;
var _geometryInstance = new Cesium.GeometryInstance({
geometry : _geometry,
id : "work_"+i,
attributes : {
color : new Cesium.ColorGeometryInstanceAttribute(0.0, 1.0, 1.0, 0.5)
}
});
scene.primitives.add(new Cesium.GroundPrimitive({
geometryInstance : _geometryInstance
}));
_geometry=null;
//viewer.flyTo(entity);
}

[vhiguit...@gmail.com]

On Wednesday, June 29, 2016 at 4:17:03 PM UTC-5, vhiguit...@gmail.com wrote:
> Hi I want to drape the terrain of geojson file, including lines and polygons, as this link. (https://twitter.com/CesiumJS/status/638821250140254208/photo/1), but it looks that the layer is above the map (https://drive.google.com/open?id=0B-it1CkHLwEndTZVYVVqd1Z1RTQ). Any ideas?. Thanks.

[Hannah Pinkos]

Hello,

We just added support for entities on terrain and it will be available in the 1.23 release that comes out tomorrow.  See the release blog post for details.

Best,

Hannah

[Eric Peters]

Hi Ben,

There is an example in the sandcastle under Gallery->Tutorial s->Ground Clamping.

Eric

On Tue, Jul 5, 2016, 4:32 PM Ben Falchuk <ben.f...@gmail.com> wrote:

.. Hannah - i see that the draping geojson feature is mentioned but i'm struggling to find examples, api or other mentions of it on the sandcastle demos and so on..

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