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CesiumJSで特定の位置の地上高度を取得する方法はありますか? Scene.globe.getHeight func を試しましたが、undefined が返されます。

    //marker is a point on map.
var marker = {latitude: 61.08658108795938, longitude: -99.64592791446208};
var height = scene.globe.getHeight( new Cesium.Cartographic(marker.longitude, marker.latitude ) );//undefined

ありがとうございました。

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2 に答える 2

3

これに使用する必要がありますsampleTerrain。次に例を示します。

// Construct the default list of terrain sources.
var terrainModels = Cesium.createDefaultTerrainProviderViewModels();

// Construct the viewer, with a high-res terrain source pre-selected.
var viewer = new Cesium.Viewer('cesiumContainer', {
    terrainProviderViewModels: terrainModels,
    selectedTerrainProviderViewModel: terrainModels[1]  // Select STK High-res terrain
});

// Get a reference to the ellipsoid, with terrain on it.  (This API may change soon)
var ellipsoid = viewer.scene.globe.ellipsoid;

// Specify our point of interest.
var pointOfInterest = Cesium.Cartographic.fromDegrees(
    -99.64592791446208, 61.08658108795938, 5000, new Cesium.Cartographic());

// [OPTIONAL] Fly the camera there, to see if we got the right point.
viewer.camera.flyTo({
    destination: ellipsoid.cartographicToCartesian(pointOfInterest,
        new Cesium.Cartesian3())
});

// Sample the terrain (async) and write the answer to the console.
Cesium.sampleTerrain(viewer.terrainProvider, 9, [pointOfInterest])
.then(function(samples) {
    console.log('Height in meters is: ' + samples[0].height);
});
于 2015-02-03T14:53:14.447 に答える