{
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      "showMoon": true,
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      "showSkyAtmosphere": true,
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        "baseColor": "#546a53",
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        "enableTranslate": true,
        "enableTilt": true,
        "enableZoom": true,
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      "baseLayerPicker": true,
      "sceneModePicker": true,
      "vrButton": true,
      "fullscreenButton": true,
      "navigationHelpButton": true,
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      "timeline": false,
      "infoBox": true,
      "geocoder": true,
      "geocoderConfig": { "key": ["ae29a37307840c7ae4a785ac905927e0"] },
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      "defaultContextMenu": true,
      "mouseDownView": true,
      "compass": { "bottom": "toolbar", "right": "5px" },
      "distanceLegend": { "left": "100px", "bottom": "2px" },
      "locationBar": {
        "fps": true,
        "crs":"CGCS2000_GK_Zone_3",
        "crsDecimal":0,
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      }
    },
    "terrain": {
      "url": "//data.mars3d.cn/terrain",
      "show": true
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        ]
      },
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        "pid": 10,
        "name": "高德影像",
        "type": "group",
        "icon": "img/basemaps/gaode_img.png",
        "layers": [
          { "name": "底图", "type": "gaode", "layer": "img_d" },
          { "name": "注记", "type": "gaode", "layer": "img_z" }
        ]
      },
      {
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        "name": "高德电子",
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        "icon": "img/basemaps/gaode_vec.png",
        "layer": "vec"
      },
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        "pid": 10,
        "name": "百度影像",
        "type": "group",
        "icon": "img/basemaps/bd-img.png",
        "layers": [
          { "name": "底图", "type": "baidu", "layer": "img_d" },
          { "name": "注记", "type": "baidu", "layer": "img_z" }
        ]
      },
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        "name": "百度电子",
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        "type": "baidu",
        "layer": "vec"
      },
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        "pid": 10,
        "name": "腾讯影像",
        "icon": "img/basemaps/gaode_img.png",
        "type": "group",
        "layers": [
          { "name": "底图", "type": "tencent", "layer": "img_d" },
          { "name": "注记", "type": "tencent", "layer": "img_z" }
        ],
        "show": true
      },
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        "name": "腾讯电子",
        "icon": "img/basemaps/gaode_vec.png",
        "type": "tencent",
        "layer": "vec"
      },
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        "name": "ArcGIS影像",
        "icon": "img/basemaps/esriWorldImagery.png",
        "type": "xyz",
        "url": "https://services.arcgisonline.com/ArcGIS/rest/services/World_Imagery/MapServer/tile/{z}/{y}/{x}",
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        "name": "微软影像",
        "icon": "img/basemaps/bingAerial.png",
        "type": "bing",
        "key": "AuKhM0WRkjhX8E4y1OM0TukYycaw_4Vh3eSfXONDf7OARls-WEB3K_Rfx89bWxof",
        "layer": "Aerial"
      },
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        "pid": 10,
        "name": "OSM地图",
        "type": "xyz",
        "icon": "img/basemaps/osm.png",
        "url": "http://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png",
        "subdomains": "abc"
      },
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        "pid": 10,
        "name": "蓝色底图",
        "icon": "img/basemaps/bd-c-midnight.png",
        "type": "xyz",
        "url": "http://map.geoq.cn/arcgis/rest/services/ChinaOnlineStreetPurplishBlue/MapServer/tile/{z}/{y}/{x}",
        "chinaCRS": "GCJ02",
        "enablePickFeatures": false
      },
      {
        "pid": 10,
        "name": "黑色底图",
        "icon": "img/basemaps/bd-c-dark.png",
        "type": "tencent",
        "layer": "custom",
        "style": "4"
      },
      {
        "pid": 10,
        "name": "灰色底图",
        "icon": "img/basemaps/bd-c-grayscale.png",
        "type": "mapbox",
        "username": "marsgis",
        "styleId": "cki0a92b123qo1aluk0e5v7sb",
        "scaleFactor": true
      },
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        "name": "离线地图  (供参考)",
        "type": "xyz",
        "icon": "img/basemaps/mapboxSatellite.png",
        "url": "//data.mars3d.cn/tile/googleImg/{z}/{x}/{y}.jpg",
        "minimumLevel": 1,
        "maximumLevel": 18,
        "minimumTerrainLevel": 1,
        "maximumTerrainLevel": 18,
        "rectangle": { "xmin": -180, "xmax": 180, "ymin": -85, "ymax": 85 }
      },
      {
        "pid": 10,
        "name": "单张图片 (本地离线)",
        "icon": "img/basemaps/offline.png",
        "type": "image",
        "url": "//data.mars3d.cn/file/img/world/world.jpg"
      }
    ],
    "layers": [
      { "id": 20, "name": "辅助图层", "type": "group" },
      {
        "pid":20,
        "name": "行政区划界线",
        "type": "xyz",
        "url": "https://t{s}.tianditu.gov.cn/DataServer?T=ibo_w&x={x}&y={y}&l={z}&tk=9ae78c51a0a28f06444d541148496e36",
        "subdomains": "01234567",
        "maximumLevel": 10,
        "show": false
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        "type": "tdt",
        "layer": "img_z",
        "key": ["9ae78c51a0a28f06444d541148496e36"],
        "show": false
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      { "id": 30, "name": "实时路况", "type": "group" },
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        "type": "gaode",
        "layer": "time",
        "minimumTerrainLevel": 4,
        "minimumLevel": 4,
        "proxy": "//server.mars3d.cn/proxy/"
      },
      {
        "pid":30,
        "name": "百度实时路况",
        "type": "baidu",
        "layer": "time"
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}