{"asset":{"generatetool":"mars3d@mars3d.cn/osgb2tiles3","gltfUpAxis":"Z","version":"1.0"},"root":{"boundingVolume":{"box":[99.8721656799316,-149.548435211182,427.705825805664,30.3119163513184,0,0,0,30.506893157959,0,0,0,8.52320861816406]},"content":{"uri":"Tile_+005_+001_L17_00.b3dm"},"geometricError":0,"pixel":88,"radius":44.4317436218262}}