Allow '{-y}' placeholder

2014-04-14 13:57:36 +02:00
parent 738fe65268
commit 9b5512c065
5 changed files with 105 additions and 6 deletions
--- a/src/ol/tileurlfunction.js
+++ b/src/ol/tileurlfunction.js
@@ -44,7 +44,11 @@ ol.TileUrlFunction.createFromTemplate = function(template) {
        } else {
          return template.replace('{z}', tileCoord.z.toString())
                         .replace('{x}', tileCoord.x.toString())
-                         .replace('{y}', tileCoord.y.toString());
+                         .replace('{y}', tileCoord.y.toString())
+                         .replace('{-y}', function() {
+                           var y = (1 << tileCoord.z) - tileCoord.y - 1;
+                           return y.toString();
+                         });
        }
      });
 };