Add new line-arrows example

openlayers · Mar 12, 2015 · 0f0d179 · 0f0d179
1 parent bee7e86
commit 0f0d179
Show file tree

Hide file tree

Showing 3 changed files with 118 additions and 0 deletions.
diff --git a/examples/data/arrow.png b/examples/data/arrow.png
diff --git a/examples/line-arrows.html b/examples/line-arrows.html
@@ -0,0 +1,51 @@
+<!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>LineString arrows example</title>
+  </head>
+  <body>
+
+    <div class="navbar navbar-inverse navbar-fixed-top">
+      <div class="navbar-inner">
+        <div class="container">
+          <a class="brand" href="./"><img src="../resources/logo.png"> OpenLayers 3 Examples</a>
+        </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">LineString arrows example</h4>
+          <p id="shortdesc">Example of drawing arrows for each line string segment.</p>
+          <div id="docs">
+            <p>See the <a href="line-arrows.js" target="_blank">line-arrows.js source</a> to see how this is done.</p>
+          </div>
+          <div id="tags">draw, vector, arrow</div>
+        </div>
+
+      </div>
+
+    </div>
+
+    <script src="../resources/jquery.min.js" type="text/javascript"></script>
+    <script src="../resources/example-behaviour.js" type="text/javascript"></script>
+    <script src="loader.js?id=line-arrows" type="text/javascript"></script>
+
+  </body>
+</html>
diff --git a/examples/line-arrows.js b/examples/line-arrows.js
@@ -0,0 +1,67 @@
+goog.require('ol.Map');
+goog.require('ol.View');
+goog.require('ol.geom.Point');
+goog.require('ol.interaction.Draw');
+goog.require('ol.layer.Tile');
+goog.require('ol.layer.Vector');
+goog.require('ol.source.MapQuest');
+goog.require('ol.source.Vector');
+goog.require('ol.style.Icon');
+goog.require('ol.style.Stroke');
+goog.require('ol.style.Style');
+
+var raster = new ol.layer.Tile({
+  source: new ol.source.MapQuest({layer: 'sat'})
+});
+
+var source = new ol.source.Vector();
+
+var styleFunction = function(feature, resolution) {
+  var geometry = feature.getGeometry();
+  var styles = [
+    // linestring
+    new ol.style.Style({
+      stroke: new ol.style.Stroke({
+        color: '#ffcc33',
+        width: 2
+      })
+    })
+  ];
+
+  geometry.forEachSegments(function(start, end) {
+    var dx = end[0] - start[0];
+    var dy = end[1] - start[1];
+    var rotation = Math.atan2(dy, dx);
+    // arrows
+    styles.push(new ol.style.Style({
+      geometry: new ol.geom.Point(end),
+      image: new ol.style.Icon({
+        src: 'data/arrow.png',
+        anchor: [0.75, 0.5],
+        rotateWithView: false,
+        rotation: -rotation
+      })
+    }));
+  });
+
+  return styles;
+};
+var vector = new ol.layer.Vector({
+  source: source,
+  style: styleFunction
+});
+
+var map = new ol.Map({
+  layers: [raster, vector],
+  renderer: exampleNS.getRendererFromQueryString(),
+  target: 'map',
+  view: new ol.View({
+    center: [-11000000, 4600000],
+    zoom: 4
+  })
+});
+
+map.addInteraction(new ol.interaction.Draw({
+  source: source,
+  type: /** @type {ol.geom.GeometryType} */ ('LineString')
+}));