Internet map coordinate type: gcj02 (Gaode) or wgs84 (Tianditu)
Tile URL template(s) for the internet map provider
OptionaltileTile pixel size, default 256
OptionaltileMax zoom level of the internet map, default 18
OptionaltileTile retina factor
OptionaltileShard placeholder values (comma-separated)
OptionaltileToken(s) for tile providers like Tianditu
OptionaltileWhether to flip Y axis
CAD map bounds string "minx,miny,maxx,maxy"
OptionalsrsCAD EPSG code for auto-overlay mode (e.g. "EPSG:4509")
OptionalfourFour parameter transform before coordinate conversion
OptionalfourFour parameter transform after coordinate conversion
OptionalpreloadPreload buffer in tiles, default 1
OptionalmaxMax concurrent tile requests, default 6
OptionalcacheLRU cache size (number of textures), default 200
Internet map tile layer configuration