TIPS.txt

https://groups.google.com/forum/#!topic/cesium-dev/xLkYIuku9hA


find /srv/calisto/tilesets/ -name '*.json' -exec sed -i 's/NaN/0/g' {} +


I've updated my docker setup here https://github.com/kiselev-dv/osm-cesium-3d-tiles

1. build and run that docker, map some folder on the host to /opt/data
2. download data and save it as /opt/data/map.osm.bz2
3. run convert.sh

What could be wrong:
convert.sh will run gazetteer.jar to filter buildings and split the large dataset into smaller tiles.
you can do it manually, it require two steps
1. java -jar /opt/gazetteer/gazetteer.jar --data-dir /opt/data split /path/to/osm.xml.bz2 or you can use pbf with osmconvert
    osmconvert /path/to/pbf | java -jar /opt/gazetteer/gazetteer.jar --data-dir /opt/data split -
2. java -jar /opt/gazetteer/gazetteer.jar tile-buildings --out-dir /opt/osm-tiles --level 12

Next convert osm into obj and split it into z14 tiles

It's done by convert_parallel.py

Manually it's:
cd to /opt/OSM2World
run ./osm2world.sh -i /path/to/osm -o path/to/obj --config /scripts/prop.properties

Than, obj2gltf and gltf2b3dm
Than you can use generated by OSM2World tileset.json



 var viewer = new Cesium.Viewer('cesiumContainer');
 var position = Cesium.Cartesian3.fromDegrees(-71.1190, 42.3736, 0);


 var entity = viewer.entities.add({
        name : 'Apple Hill',
        position : position,
        model : {
            uri : 'http://localhost:8003/tilesets/Harvard/harvard.gltf',
            minimumPixelSize : 128,
            maximumScale : 20000
        }
    });
  viewer.trackedEntity = entity;
  

  
  
  
======================================================================================================
  
https://cesium.com/docs/cesiumjs-ref-doc/Cesium3DTileset.html  
  
  
var viewer = new Cesium.Viewer('cesiumContainer', {
    scene3DOnly : true
});
var cesiumTerrainProviderMeshes = new Cesium.CesiumTerrainProvider({
    url : 'https://assets.agi.com/stk-terrain/world',
    requestWaterMask : true,
    requestVertexNormals : true
});
viewer.terrainProvider = cesiumTerrainProviderMeshes;

var scene = viewer.scene;

var heightOffset = 23.0;
var url = 'tileset.json';
var tileset = scene.primitives.add(new Cesium.Cesium3DTileset({
    url : url
}));

tileset.readyPromise.then(function(tileset) {
    var boundingSphere = tileset.boundingSphere;
    viewer.camera.viewBoundingSphere(boundingSphere, new Cesium.HeadingPitchRange(0, -2.0, 0));
    viewer.camera.lookAtTransform(Cesium.Matrix4.IDENTITY);
    // Position tileset
    var cartographic = Cesium.Cartographic.fromCartesian(boundingSphere.center);
    var surface = Cesium.Cartesian3.fromRadians(cartographic.longitude, cartographic.latitude, 0.0);
    var offset = Cesium.Cartesian3.fromRadians(cartographic.longitude, cartographic.latitude, heightOffset);
    var translation = Cesium.Cartesian3.subtract(offset, surface, new Cesium.Cartesian3());
    var matrix = Cesium.Matrix4.fromTranslation(translation);
    tileset.modelMatrix = matrix;
    var transform = Cesium.Matrix4.pack(matrix, new Array(16));
    console.log(transform);
});  

=====================================================================================================

var tileset = scene.primitives.add(new Cesium.Cesium3DTileset({
     url : 'http://localhost:8002/tilesets/Seattle/tileset.json'
}));
// Common setting for the skipLevelOfDetail optimization
var tileset = scene.primitives.add(new Cesium.Cesium3DTileset({
     url : 'http://localhost:8002/tilesets/Seattle/tileset.json',
     skipLevelOfDetail : true,
     baseScreenSpaceError : 1024,
     skipScreenSpaceErrorFactor : 16,
     skipLevels : 1,
     immediatelyLoadDesiredLevelOfDetail : false,
     loadSiblings : false,
     cullWithChildrenBounds : true
}));
// Common settings for the dynamicScreenSpaceError optimization
var tileset = scene.primitives.add(new Cesium.Cesium3DTileset({
     url : 'http://localhost:8002/tilesets/Seattle/tileset.json',
     dynamicScreenSpaceError : true,
     dynamicScreenSpaceErrorDensity : 0.00278,
     dynamicScreenSpaceErrorFactor : 4.0,
     dynamicScreenSpaceErrorHeightFalloff : 0.25
}));