Cesium監聽相機高度

  //監控相機高度
  var handler = new Cesium.ScreenSpaceEventHandler(viewer.scene.canvas);
        handler.setInputAction(function(wheelment) {
            
            var height=viewer.camera.positionCartographic.height;
        }, Cesium.ScreenSpaceEventType.WHEEL);

監聽相機高度