let defsArrs =
  [
    {
      "name": "GCS_WGS_1984",
      "epsg": "EPSG:4326",
      "def": "+proj=longlat +datum=WGS84 +no_defs"
    },
    {
      "name": "GCS_China_Geodetic_Coordinate_System_2000",
      "epsg": "EPSG:4490",
      "def": "+proj=longlat +ellps=GRS80 +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 1N",
      "epsg": "EPSG:32601",
      "def": "+proj=utm +zone=1 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 2N",
      "epsg": "EPSG:32602",
      "def": "+proj=utm +zone=2 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 3N",
      "epsg": "EPSG:32603",
      "def": "+proj=utm +zone=3 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 4N",
      "epsg": "EPSG:32604",
      "def": "+proj=utm +zone=4 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 5N",
      "epsg": "EPSG:32605",
      "def": "+proj=utm +zone=5 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 6N",
      "epsg": "EPSG:32606",
      "def": "+proj=utm +zone=6 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 7N",
      "epsg": "EPSG:32607",
      "def": "+proj=utm +zone=7 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 8N",
      "epsg": "EPSG:32608",
      "def": "+proj=utm +zone=8 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 9N",
      "epsg": "EPSG:32609",
      "def": "+proj=utm +zone=9 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 10N",
      "epsg": "EPSG:32610",
      "def": "+proj=utm +zone=10 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 11N",
      "epsg": "EPSG:32611",
      "def": "+proj=utm +zone=11 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 12N",
      "epsg": "EPSG:32612",
      "def": "+proj=utm +zone=12 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 13N",
      "epsg": "EPSG:32613",
      "def": "+proj=utm +zone=13 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 14N",
      "epsg": "EPSG:32614",
      "def": "+proj=utm +zone=14 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 15N",
      "epsg": "EPSG:32615",
      "def": "+proj=utm +zone=15 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 16N",
      "epsg": "EPSG:32616",
      "def": "+proj=utm +zone=16 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 17N",
      "epsg": "EPSG:32617",
      "def": "+proj=utm +zone=17 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 18N",
      "epsg": "EPSG:32618",
      "def": "+proj=utm +zone=18 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 19N",
      "epsg": "EPSG:32619",
      "def": "+proj=utm +zone=19 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 20N",
      "epsg": "EPSG:32620",
      "def": "+proj=utm +zone=20 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 21N",
      "epsg": "EPSG:32621",
      "def": "+proj=utm +zone=21 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 22N",
      "epsg": "EPSG:32622",
      "def": "+proj=utm +zone=22 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 23N",
      "epsg": "EPSG:32623",
      "def": "+proj=utm +zone=23 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 24N",
      "epsg": "EPSG:32624",
      "def": "+proj=utm +zone=24 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 25N",
      "epsg": "EPSG:32625",
      "def": "+proj=utm +zone=25 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 26N",
      "epsg": "EPSG:32626",
      "def": "+proj=utm +zone=26 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 27N",
      "epsg": "EPSG:32627",
      "def": "+proj=utm +zone=27 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 28N",
      "epsg": "EPSG:32628",
      "def": "+proj=utm +zone=28 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 29N",
      "epsg": "EPSG:32629",
      "def": "+proj=utm +zone=29 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 30N",
      "epsg": "EPSG:32630",
      "def": "+proj=utm +zone=30 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 31N",
      "epsg": "EPSG:32631",
      "def": "+proj=utm +zone=31 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 32N",
      "epsg": "EPSG:32632",
      "def": "+proj=utm +zone=32 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 33N",
      "epsg": "EPSG:32633",
      "def": "+proj=utm +zone=33 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 34N",
      "epsg": "EPSG:32634",
      "def": "+proj=utm +zone=34 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 35N",
      "epsg": "EPSG:32635",
      "def": "+proj=utm +zone=35 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 36N",
      "epsg": "EPSG:32636",
      "def": "+proj=utm +zone=36 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 37N",
      "epsg": "EPSG:32637",
      "def": "+proj=utm +zone=37 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 38N",
      "epsg": "EPSG:32638",
      "def": "+proj=utm +zone=38 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 39N",
      "epsg": "EPSG:32639",
      "def": "+proj=utm +zone=39 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 40N",
      "epsg": "EPSG:32640",
      "def": "+proj=utm +zone=40 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 41N",
      "epsg": "EPSG:32641",
      "def": "+proj=utm +zone=41 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 42N",
      "epsg": "EPSG:32642",
      "def": "+proj=utm +zone=42 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 43N",
      "epsg": "EPSG:32643",
      "def": "+proj=utm +zone=43 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 44N",
      "epsg": "EPSG:32644",
      "def": "+proj=utm +zone=44 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 45N",
      "epsg": "EPSG:32645",
      "def": "+proj=utm +zone=45 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 46N",
      "epsg": "EPSG:32646",
      "def": "+proj=utm +zone=46 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 47N",
      "epsg": "EPSG:32647",
      "def": "+proj=utm +zone=47 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 48N",
      "epsg": "EPSG:32648",
      "def": "+proj=utm +zone=48 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 49N",
      "epsg": "EPSG:32649",
      "def": "+proj=utm +zone=49 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 50N",
      "epsg": "EPSG:32650",
      "def": "+proj=utm +zone=50 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 51N",
      "epsg": "EPSG:32651",
      "def": "+proj=utm +zone=51 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 52N",
      "epsg": "EPSG:32652",
      "def": "+proj=utm +zone=52 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 53N",
      "epsg": "EPSG:32653",
      "def": "+proj=utm +zone=53 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 54N",
      "epsg": "EPSG:32654",
      "def": "+proj=utm +zone=54 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 55N",
      "epsg": "EPSG:32655",
      "def": "+proj=utm +zone=55 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 56N",
      "epsg": "EPSG:32656",
      "def": "+proj=utm +zone=56 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 57N",
      "epsg": "EPSG:32657",
      "def": "+proj=utm +zone=57 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 58N",
      "epsg": "EPSG:32658",
      "def": "+proj=utm +zone=58 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 59N",
      "epsg": "EPSG:32659",
      "def": "+proj=utm +zone=59 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 60N",
      "epsg": "EPSG:32660",
      "def": "+proj=utm +zone=60 +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 1S",
      "epsg": "EPSG:32701",
      "def": "+proj=utm +zone=1 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 2S",
      "epsg": "EPSG:32702",
      "def": "+proj=utm +zone=2 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 3S",
      "epsg": "EPSG:32703",
      "def": "+proj=utm +zone=3 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 4S",
      "epsg": "EPSG:32704",
      "def": "+proj=utm +zone=4 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 5S",
      "epsg": "EPSG:32705",
      "def": "+proj=utm +zone=5 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 6S",
      "epsg": "EPSG:32706",
      "def": "+proj=utm +zone=6 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 7S",
      "epsg": "EPSG:32707",
      "def": "+proj=utm +zone=7 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 8S",
      "epsg": "EPSG:32708",
      "def": "+proj=utm +zone=8 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 9S",
      "epsg": "EPSG:32709",
      "def": "+proj=utm +zone=9 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 10S",
      "epsg": "EPSG:32710",
      "def": "+proj=utm +zone=10 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 11S",
      "epsg": "EPSG:32711",
      "def": "+proj=utm +zone=11 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 12S",
      "epsg": "EPSG:32712",
      "def": "+proj=utm +zone=12 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 13S",
      "epsg": "EPSG:32713",
      "def": "+proj=utm +zone=13 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 14S",
      "epsg": "EPSG:32714",
      "def": "+proj=utm +zone=14 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 15S",
      "epsg": "EPSG:32715",
      "def": "+proj=utm +zone=15 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 16S",
      "epsg": "EPSG:32716",
      "def": "+proj=utm +zone=16 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 17S",
      "epsg": "EPSG:32717",
      "def": "+proj=utm +zone=17 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 18S",
      "epsg": "EPSG:32718",
      "def": "+proj=utm +zone=18 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 19S",
      "epsg": "EPSG:32719",
      "def": "+proj=utm +zone=19 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 20S",
      "epsg": "EPSG:32720",
      "def": "+proj=utm +zone=20 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 21S",
      "epsg": "EPSG:32721",
      "def": "+proj=utm +zone=21 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 22S",
      "epsg": "EPSG:32722",
      "def": "+proj=utm +zone=22 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 23S",
      "epsg": "EPSG:32723",
      "def": "+proj=utm +zone=23 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 24S",
      "epsg": "EPSG:32724",
      "def": "+proj=utm +zone=24 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 25S",
      "epsg": "EPSG:32725",
      "def": "+proj=utm +zone=25 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 26S",
      "epsg": "EPSG:32726",
      "def": "+proj=utm +zone=26 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 27S",
      "epsg": "EPSG:32727",
      "def": "+proj=utm +zone=27 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 28S",
      "epsg": "EPSG:32728",
      "def": "+proj=utm +zone=28 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 29S",
      "epsg": "EPSG:32729",
      "def": "+proj=utm +zone=29 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 30S",
      "epsg": "EPSG:32730",
      "def": "+proj=utm +zone=30 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 31S",
      "epsg": "EPSG:32731",
      "def": "+proj=utm +zone=31 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 32S",
      "epsg": "EPSG:32732",
      "def": "+proj=utm +zone=32 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 33S",
      "epsg": "EPSG:32733",
      "def": "+proj=utm +zone=33 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 34S",
      "epsg": "EPSG:32734",
      "def": "+proj=utm +zone=34 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 35S",
      "epsg": "EPSG:32735",
      "def": "+proj=utm +zone=35 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 36S",
      "epsg": "EPSG:32736",
      "def": "+proj=utm +zone=36 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 37S",
      "epsg": "EPSG:32737",
      "def": "+proj=utm +zone=37 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 38S",
      "epsg": "EPSG:32738",
      "def": "+proj=utm +zone=38 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 39S",
      "epsg": "EPSG:32739",
      "def": "+proj=utm +zone=39 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 40S",
      "epsg": "EPSG:32740",
      "def": "+proj=utm +zone=40 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 41S",
      "epsg": "EPSG:32741",
      "def": "+proj=utm +zone=41 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 42S",
      "epsg": "EPSG:32742",
      "def": "+proj=utm +zone=42 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 43S",
      "epsg": "EPSG:32743",
      "def": "+proj=utm +zone=43 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 44S",
      "epsg": "EPSG:32744",
      "def": "+proj=utm +zone=44 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 45S",
      "epsg": "EPSG:32745",
      "def": "+proj=utm +zone=45 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 46S",
      "epsg": "EPSG:32746",
      "def": "+proj=utm +zone=46 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 47S",
      "epsg": "EPSG:32747",
      "def": "+proj=utm +zone=47 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 48S",
      "epsg": "EPSG:32748",
      "def": "+proj=utm +zone=48 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 49S",
      "epsg": "EPSG:32749",
      "def": "+proj=utm +zone=49 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 50S",
      "epsg": "EPSG:32750",
      "def": "+proj=utm +zone=50 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 51S",
      "epsg": "EPSG:32751",
      "def": "+proj=utm +zone=51 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 52S",
      "epsg": "EPSG:32752",
      "def": "+proj=utm +zone=52 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 53S",
      "epsg": "EPSG:32753",
      "def": "+proj=utm +zone=53 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 54S",
      "epsg": "EPSG:32754",
      "def": "+proj=utm +zone=54 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 55S",
      "epsg": "EPSG:32755",
      "def": "+proj=utm +zone=55 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 56S",
      "epsg": "EPSG:32756",
      "def": "+proj=utm +zone=56 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 57S",
      "epsg": "EPSG:32757",
      "def": "+proj=utm +zone=57 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 58S",
      "epsg": "EPSG:32758",
      "def": "+proj=utm +zone=58 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 59S",
      "epsg": "EPSG:32759",
      "def": "+proj=utm +zone=59 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "WGS 84 / UTM zone 60S",
      "epsg": "EPSG:32760",
      "def": "+proj=utm +zone=60 +south +datum=WGS84 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_GK_Zone_13",
      "epsg": "EPSG:4491",
      "def": "+proj=tmerc +lat_0=0 +lon_0=75 +k=1 +x_0=13500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_GK_Zone_14",
      "epsg": "EPSG:4492",
      "def": "+proj=tmerc +lat_0=0 +lon_0=81 +k=1 +x_0=14500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_GK_Zone_15",
      "epsg": "EPSG:4493",
      "def": "+proj=tmerc +lat_0=0 +lon_0=87 +k=1 +x_0=15500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_GK_Zone_16",
      "epsg": "EPSG:4494",
      "def": "+proj=tmerc +lat_0=0 +lon_0=93 +k=1 +x_0=16500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_GK_Zone_17",
      "epsg": "EPSG:4495",
      "def": "+proj=tmerc +lat_0=0 +lon_0=99 +k=1 +x_0=17500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_GK_Zone_18",
      "epsg": "EPSG:4496",
      "def": "+proj=tmerc +lat_0=0 +lon_0=105 +k=1 +x_0=18500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_GK_Zone_19",
      "epsg": "EPSG:4497",
      "def": "+proj=tmerc +lat_0=0 +lon_0=111 +k=1 +x_0=19500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_GK_Zone_20",
      "epsg": "EPSG:4498",
      "def": "+proj=tmerc +lat_0=0 +lon_0=117 +k=1 +x_0=20500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_GK_Zone_21",
      "epsg": "EPSG:4499",
      "def": "+proj=tmerc +lat_0=0 +lon_0=123 +k=1 +x_0=21500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_GK_Zone_22",
      "epsg": "EPSG:4500",
      "def": "+proj=tmerc +lat_0=0 +lon_0=129 +k=1 +x_0=22500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_GK_Zone_23",
      "epsg": "EPSG:4501",
      "def": "+proj=tmerc +lat_0=0 +lon_0=135 +k=1 +x_0=23500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_GK_CM_75E",
      "epsg": "EPSG:4502",
      "def": "+proj=tmerc +lat_0=0 +lon_0=75 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_GK_CM_81E",
      "epsg": "EPSG:4503",
      "def": "+proj=tmerc +lat_0=0 +lon_0=81 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_GK_CM_87E",
      "epsg": "EPSG:4504",
      "def": "+proj=tmerc +lat_0=0 +lon_0=87 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_GK_CM_93E",
      "epsg": "EPSG:4505",
      "def": "+proj=tmerc +lat_0=0 +lon_0=93 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_GK_CM_99E",
      "epsg": "EPSG:4506",
      "def": "+proj=tmerc +lat_0=0 +lon_0=99 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_GK_CM_105E",
      "epsg": "EPSG:4507",
      "def": "+proj=tmerc +lat_0=0 +lon_0=105 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_GK_CM_111E",
      "epsg": "EPSG:4508",
      "def": "+proj=tmerc +lat_0=0 +lon_0=111 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_GK_CM_117E",
      "epsg": "EPSG:4509",
      "def": "+proj=tmerc +lat_0=0 +lon_0=117 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_GK_CM_123E",
      "epsg": "EPSG:4510",
      "def": "+proj=tmerc +lat_0=0 +lon_0=123 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_GK_CM_129E",
      "epsg": "EPSG:4511",
      "def": "+proj=tmerc +lat_0=0 +lon_0=129 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_GK_CM_135E",
      "epsg": "EPSG:4512",
      "def": "+proj=tmerc +lat_0=0 +lon_0=135 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_Zone_25",
      "epsg": "EPSG:4513",
      "def": "+proj=tmerc +lat_0=0 +lon_0=75 +k=1 +x_0=25500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_Zone_26",
      "epsg": "EPSG:4514",
      "def": "+proj=tmerc +lat_0=0 +lon_0=78 +k=1 +x_0=26500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_Zone_27",
      "epsg": "EPSG:4515",
      "def": "+proj=tmerc +lat_0=0 +lon_0=81 +k=1 +x_0=27500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_Zone_28",
      "epsg": "EPSG:4516",
      "def": "+proj=tmerc +lat_0=0 +lon_0=84 +k=1 +x_0=28500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_Zone_29",
      "epsg": "EPSG:4517",
      "def": "+proj=tmerc +lat_0=0 +lon_0=87 +k=1 +x_0=29500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_Zone_30",
      "epsg": "EPSG:4518",
      "def": "+proj=tmerc +lat_0=0 +lon_0=90 +k=1 +x_0=30500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_Zone_31",
      "epsg": "EPSG:4519",
      "def": "+proj=tmerc +lat_0=0 +lon_0=93 +k=1 +x_0=31500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_Zone_32",
      "epsg": "EPSG:4520",
      "def": "+proj=tmerc +lat_0=0 +lon_0=96 +k=1 +x_0=32500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_Zone_33",
      "epsg": "EPSG:4521",
      "def": "+proj=tmerc +lat_0=0 +lon_0=99 +k=1 +x_0=33500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_Zone_34",
      "epsg": "EPSG:4522",
      "def": "+proj=tmerc +lat_0=0 +lon_0=102 +k=1 +x_0=34500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_Zone_35",
      "epsg": "EPSG:4523",
      "def": "+proj=tmerc +lat_0=0 +lon_0=105 +k=1 +x_0=35500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_Zone_36",
      "epsg": "EPSG:4524",
      "def": "+proj=tmerc +lat_0=0 +lon_0=108 +k=1 +x_0=36500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_Zone_37",
      "epsg": "EPSG:4525",
      "def": "+proj=tmerc +lat_0=0 +lon_0=111 +k=1 +x_0=37500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_Zone_38",
      "epsg": "EPSG:4526",
      "def": "+proj=tmerc +lat_0=0 +lon_0=114 +k=1 +x_0=38500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_Zone_39",
      "epsg": "EPSG:4527",
      "def": "+proj=tmerc +lat_0=0 +lon_0=117 +k=1 +x_0=39500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_Zone_40",
      "epsg": "EPSG:4528",
      "def": "+proj=tmerc +lat_0=0 +lon_0=120 +k=1 +x_0=40500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_Zone_41",
      "epsg": "EPSG:4529",
      "def": "+proj=tmerc +lat_0=0 +lon_0=123 +k=1 +x_0=41500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_Zone_42",
      "epsg": "EPSG:4530",
      "def": "+proj=tmerc +lat_0=0 +lon_0=126 +k=1 +x_0=42500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_Zone_43",
      "epsg": "EPSG:4531",
      "def": "+proj=tmerc +lat_0=0 +lon_0=129 +k=1 +x_0=43500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_Zone_44",
      "epsg": "EPSG:4532",
      "def": "+proj=tmerc +lat_0=0 +lon_0=132 +k=1 +x_0=44500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_Zone_45",
      "epsg": "EPSG:4533",
      "def": "+proj=tmerc +lat_0=0 +lon_0=135 +k=1 +x_0=45500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_CM_75E",
      "epsg": "EPSG:4534",
      "def": "+proj=tmerc +lat_0=0 +lon_0=75 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_CM_78E",
      "epsg": "EPSG:4535",
      "def": "+proj=tmerc +lat_0=0 +lon_0=78 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_CM_81E",
      "epsg": "EPSG:4536",
      "def": "+proj=tmerc +lat_0=0 +lon_0=81 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_CM_84E",
      "epsg": "EPSG:4537",
      "def": "+proj=tmerc +lat_0=0 +lon_0=84 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_CM_87E",
      "epsg": "EPSG:4538",
      "def": "+proj=tmerc +lat_0=0 +lon_0=87 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_CM_90E",
      "epsg": "EPSG:4539",
      "def": "+proj=tmerc +lat_0=0 +lon_0=90 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_CM_93E",
      "epsg": "EPSG:4540",
      "def": "+proj=tmerc +lat_0=0 +lon_0=93 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_CM_96E",
      "epsg": "EPSG:4541",
      "def": "+proj=tmerc +lat_0=0 +lon_0=96 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_CM_99E",
      "epsg": "EPSG:4542",
      "def": "+proj=tmerc +lat_0=0 +lon_0=99 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_CM_102E",
      "epsg": "EPSG:4543",
      "def": "+proj=tmerc +lat_0=0 +lon_0=102 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_CM_105E",
      "epsg": "EPSG:4544",
      "def": "+proj=tmerc +lat_0=0 +lon_0=105 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_CM_108E",
      "epsg": "EPSG:4545",
      "def": "+proj=tmerc +lat_0=0 +lon_0=108 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_CM_111E",
      "epsg": "EPSG:4546",
      "def": "+proj=tmerc +lat_0=0 +lon_0=111 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_CM_114E",
      "epsg": "EPSG:4547",
      "def": "+proj=tmerc +lat_0=0 +lon_0=114 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_CM_117E",
      "epsg": "EPSG:4548",
      "def": "+proj=tmerc +lat_0=0 +lon_0=117 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_CM_120E",
      "epsg": "EPSG:4549",
      "def": "+proj=tmerc +lat_0=0 +lon_0=120 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_CM_123E",
      "epsg": "EPSG:4550",
      "def": "+proj=tmerc +lat_0=0 +lon_0=123 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_CM_126E",
      "epsg": "EPSG:4551",
      "def": "+proj=tmerc +lat_0=0 +lon_0=126 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_CM_129E",
      "epsg": "EPSG:4552",
      "def": "+proj=tmerc +lat_0=0 +lon_0=129 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_CM_132E",
      "epsg": "EPSG:4553",
      "def": "+proj=tmerc +lat_0=0 +lon_0=132 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    },
    {
      "name": "CGCS2000_3_Degree_GK_CM_135E",
      "epsg": "EPSG:4554",
      "def": "+proj=tmerc +lat_0=0 +lon_0=135 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    }
  ]

class Proj {
  constructor() {
    this.name_map = new Map()
    this.epsg_map = new Map()
    this.initProj()
  }

  initProj() {
    defsArrs.forEach((value) => {
      proj4.defs(
        value.epsg,
        value.def
      );
      this.name_map.set(value.name, value)
      this.epsg_map.set(value.epsg, value)
    })
  }

  /**
   * 坐标系转换
   * arrs  二维数组，x,y,z
   * src  原始投影,可以是name，也可以是epsg
   * dst 目标投影，可以是name，也可以是epsg
   * */
  convert(points = [], src = "", dst = "") {
    let result = {
      points: [],
      code: 0,
      message: ""
    }
    if (!this.name_map.has(src) && !this.epsg_map.has(src)) {
      result.code = 1
      result.message = "不支持的坐标系：" + src
      return result
    }
    if (!this.name_map.has(dst) && !this.epsg_map.has(dst)) {
      result.code = 1
      result.message = "不支持的坐标系：" + dst
      return result
    }
    let src_epsg = (this.name_map.get(src) || this.epsg_map.get(src)).epsg
    let dst_epsg = (this.name_map.get(dst) || this.epsg_map.get(dst)).epsg

    var src_projection = proj4.defs(src_epsg);

    var dst_projection = proj4.defs(dst_epsg);

    points.forEach(point => {
      let x = Number(point.x)
      let y = Number(point.y)
      let z = Number(point.z || 0)

      var res = proj4(src_projection, dst_projection, [x, y]);
      result.points.push({
        "x": Number(res[0].toFixed(10)),
        "y": Number(res[1].toFixed(10)),
        "z": z,
      })
    })
    return (result)
  }

  /**
   * 获取所有支持的坐标系投影
   * */
  getAllProjection() {
    return Array.from(this.name_map.values())
  }

  /*检查是否支持的投影*/
  projectionIsExists(projection) {
    return this.name_map.has(projection) || this.epsg_map.has(projection)
  }

  degreesToDMS(degrees, isDM = false) {
    //小数点尾数
    function getDecimalPlaces(num) {

      const str = num.toString();
      const decimalIndex = str.indexOf('.');
      if (decimalIndex !== -1) {
        return str.length - decimalIndex - 1;
      }
      return 0;
    }
    //10的n次方
    function tenToThePowerOfN(n) {
      return Math.pow(10, n);
    }
    let d = Math.floor(degrees); // 获取整度
    let pow1 = tenToThePowerOfN(getDecimalPlaces(degrees))
    let x = Math.floor((degrees - d) * pow1 * 60) / pow1; // 获取秒（3600分之一度）
    let m = Math.floor(x);

    let pow = tenToThePowerOfN(getDecimalPlaces(x))
    let s = Math.floor((x - m) * pow) / pow * 60; // 获取秒（3600分之一度）
    if (isDM) {
      return d + "°" + Number(x.toFixed(4)) + "'"; // 返回度分格式
    }
    else {
      return d + "°" + m + "'" + s.toFixed(2) + '"'; // 返回度分秒格式
    }
  }

  dmsToDecimal(dms, isDM) {
    let degrees, minutes, seconds

    if (isDM) {
      let arr1 = dms.split("°")
      let arr2 = arr1[1].split("'")
      degrees = arr1[0]
      minutes = arr2[0]
      console.log(degrees, minutes)
      let n = Math.pow(10, 8);
      let num = Number(degrees * n) + minutes * n / 60;
      return Math.round(num) / n
    }
    else {
      let arr1 = dms.split("°")
      let arr2 = arr1[1].split("'")
      let arr3 = arr2[1].split('"')
      degrees = arr1[0]
      minutes = arr2[0]
      seconds = arr3[0]
      console.log(degrees, minutes, seconds)
      let n = Math.pow(10, 8);
      let num = Number(degrees * n) + minutes * n / 60 + seconds * n / 3600;
      return Math.round(num) / n
    }
  }
}

export {
  Proj
}