             16, 17, 18, 16, 18, 19,
                    20, 21, 22, 20, 22, 23,
                ]);
                // 5 创建Primitive
                myBox = viewer.scene.primitives.add(new Cesium.Primitive({
                    geometryInstances: new Cesium.GeometryInstance({
                        geometry: new Cesium.Geometry({
                            attributes: {
                                position: new Cesium.GeometryAttribute({
                                    componentDatat