Update wmts-hidpi, add nicer-api-docs

nicer-api-docs/examples/tile-vector.js

@@ -0,0 +1,74 @@
+var waterLayer = new ol.layer.Vector({
+  source: new ol.source.TileVector({
+    format: new ol.format.TopoJSON({
+      defaultProjection: 'EPSG:4326'
+    }),
+    projection: 'EPSG:3857',
+    tileGrid: new ol.tilegrid.XYZ({
+      maxZoom: 19
+    }),
+    url: 'http://{a-c}.tile.openstreetmap.us/' +
+        'vectiles-water-areas/{z}/{x}/{y}.topojson'
+  }),
+  style: new ol.style.Style({
+    fill: new ol.style.Fill({
+      color: '#9db9e8'
+    })
+  })
+});
+
+var roadStyleCache = {};
+var roadLayer = new ol.layer.Vector({
+  source: new ol.source.TileVector({
+    format: new ol.format.TopoJSON({
+      defaultProjection: 'EPSG:4326'
+    }),
+    projection: 'EPSG:3857',
+    tileGrid: new ol.tilegrid.XYZ({
+      maxZoom: 19
+    }),
+    url: 'http://{a-c}.tile.openstreetmap.us/' +
+        'vectiles-highroad/{z}/{x}/{y}.topojson'
+  }),
+  style: function(feature, resolution) {
+    var kind = feature.get('kind');
+    var railway = feature.get('railway');
+    var sort_key = feature.get('sort_key');
+    var styleKey = kind + '/' + railway + '/' + sort_key;
+    var styleArray = roadStyleCache[styleKey];
+    if (!styleArray) {
+      var color, width;
+      if (railway) {
+        color = '#7de';
+        width = 1;
+      } else {
+        color = {
+          'major_road': '#776',
+          'minor_road': '#ccb',
+          'highway': '#f39'
+        }[kind];
+        width = kind == 'highway' ? 1.5 : 1;
+      }
+      styleArray = [new ol.style.Style({
+        stroke: new ol.style.Stroke({
+          color: color,
+          width: width
+        }),
+        zIndex: sort_key
+      })];
+      roadStyleCache[styleKey] = styleArray;
+    }
+    return styleArray;
+  }
+});
+
+var map = new ol.Map({
+  layers: [waterLayer, roadLayer],
+  renderer: 'canvas',
+  target: document.getElementById('map'),
+  view: new ol.View2D({
+    center: ol.proj.transform([-74.0064, 40.7142], 'EPSG:4326', 'EPSG:3857'),
+    maxZoom: 19,
+    zoom: 14
+  })
+});