synthetic-data example renamed to synthetic-points

examples/synthetic-points.js

@@ -0,0 +1,61 @@
+goog.require('ol.Feature');
+goog.require('ol.Map');
+goog.require('ol.Overlay');
+goog.require('ol.RendererHint');
+goog.require('ol.View2D');
+goog.require('ol.geom.Point');
+goog.require('ol.layer.Vector');
+goog.require('ol.shape');
+goog.require('ol.source.Vector');
+goog.require('ol.style.Fill');
+goog.require('ol.style.Stroke');
+
+
+var count = 20000;
+var features = new Array(count);
+var e = 18000000;
+for (var i = 0; i < count; ++i) {
+  features[i] = new ol.Feature({
+    'geometry': new ol.geom.Point(
+        [2 * e * Math.random() - e, 2 * e * Math.random() - e]),
+    'i': i,
+    'size': i % 2 ? 10 : 20
+  });
+}
+
+var styles = {
+  '10': {
+    image: ol.shape.renderCircle(5,
+        new ol.style.Fill({color: '#666666'}),
+        new ol.style.Stroke({color: '#bada55', width: 1}))
+  },
+  '20': {
+    image: ol.shape.renderCircle(10,
+        new ol.style.Fill({color: '#666666'}),
+        new ol.style.Stroke({color: '#bada55', width: 1}))
+  }
+};
+
+var vector = new ol.layer.Vector({
+  source: new ol.source.Vector({
+    features: features
+  }),
+  styleFunction: function(feature) {
+    return styles[feature.get('size')];
+  }
+});
+
+var popup = new ol.Overlay({
+  element: document.getElementById('popup')
+});
+
+var map = new ol.Map({
+  layers: [vector],
+  renderer: ol.RendererHint.CANVAS,
+  target: 'map',
+  view: new ol.View2D({
+    center: [0, 0],
+    zoom: 2
+  }),
+  overlays: [popup]
+});