Add xray viewer for vector data

2016-03-17 11:31:33 +01:00
parent c132d7fba8
commit 34befd43c9
6 changed files with 141 additions and 18 deletions
--- a/src/utils.js
+++ b/src/utils.js
@@ -22,3 +22,18 @@ module.exports.getTileUrls = function(req, domains, path, format) {

  return uris;
 };
+
+module.exports.fixTileJSONCenter = function(tileJSON) {
+  if (tileJSON.bounds && !tileJSON.center) {
+    var fitWidth = 1024;
+    var tiles = fitWidth / 256;
+    tileJSON.center = [
+      (tileJSON.bounds[0] + tileJSON.bounds[2]) / 2,
+      (tileJSON.bounds[1] + tileJSON.bounds[3]) / 2,
+      Math.round(
+        -Math.log((tileJSON.bounds[2] - tileJSON.bounds[0]) / 360 / tiles) /
+        Math.LN2
+      )
+    ];
+  }
+};