Add min-max-resolution example

Show/hide layers depending on current map resolution.
2013-09-17 15:45:19 +02:00
parent fa484cca8c
commit 97556f234f
2 changed files with 98 additions and 0 deletions
--- a/examples/min-max-resolution.html
+++ b/examples/min-max-resolution.html
@@ -0,0 +1,65 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta http-equiv="X-UA-Compatible" content="chrome=1">
+    <meta name="viewport" content="initial-scale=1.0, user-scalable=no, width=device-width">
+    <link rel="stylesheet" href="../css/ol.css" type="text/css">
+    <link rel="stylesheet" href="../resources/bootstrap/css/bootstrap.min.css" type="text/css">
+    <link rel="stylesheet" href="../resources/layout.css" type="text/css">
+    <link rel="stylesheet" href="../resources/bootstrap/css/bootstrap-responsive.min.css" type="text/css">
+    <title>Min/max resolution example</title>
+  </head>
+  <body>
+
+    <div class="navbar navbar-inverse navbar-fixed-top">
+      <div class="navbar-inner">
+        <div class="container">
+          <a class="brand" href="./">OpenLayers 3 Examples</a>
+          <ul class="nav pull-right">
+            <li><iframe class="github-watch-button" src="http://ghbtns.com/github-btn.html?user=openlayers&repo=ol3&type=watch&count=true"
+  allowtransparency="true" frameborder="0" scrolling="0" height="20" width="90"></iframe></li>
+            <li><a href="https://twitter.com/share" class="twitter-share-button" data-count="none" data-hashtags="openlayers">&nbsp;</a></li>
+            <li><div class="g-plusone-wrapper"><div class="g-plusone" data-size="medium" data-annotation="none"></div></div></li>
+          </ul>
+        </div>
+      </div>
+    </div>
+
+    <div class="container-fluid">
+
+      <div class="row-fluid">
+        <div class="span12">
+          <div id="map" class="map"></div>
+        </div>
+      </div>
+
+      <div class="row-fluid">
+
+        <div class="span12">
+          <h4 id="title">Min/max resolution example</h4>
+          <p id="shortdesc">Show/hide layers depending on current view resolution.</p>
+          <div id="docs">
+            <p>
+            Zoom in twice: the MapBox layer should hide whereas the OSM layer should be shown.
+            </p>
+            <p>
+            If you continue to zoom in, you'll see the OSM layer also disappear.
+            </p>
+            <p>
+            The rendering of the layers are here controlled using minResolution and maxResolution options.
+            </p>
+            <p>See the <a href="min-max-resolution.js" target="_blank">min-max-resolution.js source</a> to see how this is done.</p>
+          </div>
+          <div id="tags">minResolution, maxResolution, resolution</div>
+        </div>
+
+      </div>
+
+    </div>
+
+    <script src="loader.js?id=min-max-resolution" type="text/javascript"></script>
+    <script src="../resources/social-links.js" type="text/javascript"></script>
+
+  </body>
+</html>
--- a/examples/min-max-resolution.js
+++ b/examples/min-max-resolution.js
@@ -0,0 +1,33 @@
+goog.require('ol.Map');
+goog.require('ol.View2D');
+goog.require('ol.layer.Tile');
+goog.require('ol.source.OSM');
+goog.require('ol.source.TileJSON');
+
+
+/**
+ * Create the map.
+ */
+var map = new ol.Map({
+  layers: [
+    new ol.layer.Tile({
+      source: new ol.source.OSM(),
+      minResolution: 200,
+      maxResolution: 2000
+    }),
+    new ol.layer.Tile({
+      source: new ol.source.TileJSON({
+        url: 'http://api.tiles.mapbox.com/v3/' +
+            'mapbox.natural-earth-hypso-bathy.jsonp',
+        crossOrigin: 'anonymous'
+      }),
+      minResolution: 2000,
+      maxResolution: 20000
+    })
+  ],
+  target: 'map',
+  view: new ol.View2D({
+    center: [653600, 5723680],
+    zoom: 5
+  })
+});