How to use CesiumJS to visualize data from a Session: Difference between revisions
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// variables | // variables | ||
const dim = 128; | const dim = 128; | ||
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})); | })); | ||
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{{article end | {{article end | ||
Revision as of 12:53, 1 March 2024
// variables
const dim = 128;
const minLevel = 6;
const maxLevel = 19;
const tilepx = 512;
// Construct the default list of terrain sources.
var terrainModels = [];
terrainModels.push(new Cesium.ProviderViewModel({
name: "Project Terrain",
category: "Terrain",
iconUrl: Cesium.buildModuleUrl('Widgets/Images/TerrainProviders/Ellipsoid.png'),
creationFunction: function () {
return new Cesium.CustomHeightmapTerrainProvider({
width: dim,
height: dim,
maximumLevel: maxLevel,
callback: function (x, y, level) {
if (level <= 10) { // ignore zoom levels 10 and lower
return new Float32Array(dim * dim); // all zeros
}
const test = Cesium.Resource.fetchArrayBuffer('terrain/' + level + '/' + x + '/' + y + '.bin?worlddatum=true&token=$TOKEN&width=' + dim + '&height=' + dim);
return test.then(function (buffer) {
const array = new Float32Array(dim * dim); // all zeros
const view = new DataView(buffer);
for (let i = 0; i < dim * dim; i++) {
array[i] = view.getFloat32(i * 4);
}
return array;
});
},
});
}
}));