//地球旋转，抄的“LBHN”这个大佬的。

viewer.clock.multiplier = 200; //速度

viewer.clock.shouldAnimate = true;

var previousTime = viewer.clock.currentTime.secondsOfDay;

function onTickCallback() {

var spinRate = 1;

var currentTime = viewer.clock.currentTime.secondsOfDay;

var delta = (currentTime - previousTime) / 1000;

previousTime = currentTime;

viewer.scene.camera.rotate(Cesium.Cartesian3.UNIT_Z, -spinRate * delta);

}

viewer.clock.onTick.addEventListener(onTickCallback);

//监听点击事件，当点击地图时停止旋转

var handler = new Cesium.ScreenSpaceEventHandler(viewer.scene.canvas);

handler.setInputAction(function (click) {

viewer.clock.onTick.removeEventListener(onTickCallback);

}, Cesium.ScreenSpaceEventType.LEFT_DOWN);