             "type": "createTileMapServiceImageryProvider"
                                }
                            }
                        },
                    ]
                };
                const viewer = earth.czm.viewer;
                var boxLength = 100000.0;
                var position = Cesium.Cartesian3.fromDegrees(116.39, 39.9, 0.5 * boxLength);
                var modelMatrix = Cesium.Transforms.eastNorthUpToFixedFrame(position);
                // 0 立方体顶点位�