cesium 进入地下问题(1.8版本)
静止cesium相机划入地下
viewermap.scene.screenSpaceCameraController.enableCollisionDetection=true
viewermap.scene.globe.translucency.enabled = false;
viewermap.scene.screenSpaceCameraController.enableCollisionDetection=true
viewermap.scene.globe.translucency.enabled = false;
