new TileSystem(sx, sy, ox, oy) [source]
Similar with transformation, it contains 4 numbers: sx, sy, ox, oy.
var ts = new TileSystem([1, -1, -20037508.34, 20037508.34]);
||Number||the order of X-axis tile index, 1 means right is larger and -1 means the reverse, left is larger;|
||Number||the order of Y-axis tile index, 1 means bottom is larger and -1 means the reverse, top is larger;|
||Number||x of the origin point of the world's projected coordinate system|
||Number||y of the origin point of the world's projected coordinate system|
(static, constant) "web-mercator"
The most common used tile system, used by google maps, bing maps and amap, soso maps in China.
(static, constant) "tms-global-mercator"
(static, constant) "tms-global-geodetic"
Another tile system published by OSGEO, based on EPSG:4326 SRS.
(static, constant) baidu
Tile system used by baidu
(static) getDefault(projection) [source]
Get the default tile system's code for the projection.
||Object||a projection object|