Update wmts-hidpi, add nicer-api-docs

nicer-api-docs/examples/moveend.js

@@ -0,0 +1,37 @@
+var map = new ol.Map({
+  layers: [
+    new ol.layer.Tile({
+      source: new ol.source.OSM()
+    })
+  ],
+  renderer: exampleNS.getRendererFromQueryString(),
+  target: 'map',
+  view: new ol.View2D({
+    center: [0, 0],
+    zoom: 2
+  })
+});
+
+function display(id, value) {
+  document.getElementById(id).value = value.toFixed(2);
+}
+
+function wrapLon(value) {
+  var worlds = Math.floor((value + 180) / 360);
+  return value - (worlds * 360);
+}
+
+function onMoveEnd(evt) {
+  var map = evt.map;
+  var extent = map.getView().calculateExtent(map.getSize());
+  var bottomLeft = ol.proj.transform(ol.extent.getBottomLeft(extent),
+      'EPSG:3857', 'EPSG:4326');
+  var topRight = ol.proj.transform(ol.extent.getTopRight(extent),
+      'EPSG:3857', 'EPSG:4326');
+  display('left', wrapLon(bottomLeft[0]));
+  display('bottom', bottomLeft[1]);
+  display('right', wrapLon(topRight[0]));
+  display('top', topRight[1]);
+}
+
+map.on('moveend', onMoveEnd);