Cesium 當(dāng)前時間

viewer.clock.currentTime 是當(dāng)前時間
viewer.clock.startTime 是初始時間

cesium 已知經(jīng)緯度獲取高度

// 根據(jù)經(jīng)緯度獲取高度
function getHeigthByLonLat(lon = 87.5968, lat = 43.8084){
    var positions = Cesium.Cartographic.fromDegrees(lon,lat);
    var promise = new Cesium.sampleTerrain(viewer.terrainProvider, 13, [positions]);
    promise = Cesium.sampleTerrainMostDetailed(viewer.terrainProvider, positions);
    Cesium.when(new Cesium.sampleTerrain(viewer.terrainProvider, 13, [positions]), function (updatedPositions) {
        console.log("zhang",lon,lat,updatedPositions[0].height);
    });
}

補(bǔ)充一下，這個Cesium.when方法是異步的