                // 1.1.2 场景配置
                earth.sceneTree.root = {
                    "expand": true,
                    "title": "预览场景",
                    "children": [{
                        "czmObject": {
                            "name": '大雁塔',
                            "xbsjType": "Tileset",
                            "url": '../assets/dayanta/tileset.json',
                            "xbsjUseOriginTransform": false,
                            "skipLevelOfDetail":