Build and parse examples from examples_src/

examples_src/synthetic-lines.js

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+goog.require('ol.Feature');
+goog.require('ol.Map');
+goog.require('ol.View');
+goog.require('ol.geom.LineString');
+goog.require('ol.layer.Vector');
+goog.require('ol.source.Vector');
+goog.require('ol.style.Stroke');
+goog.require('ol.style.Style');
+
+
+var count = 10000;
+var features = new Array(count);
+
+var startPoint = [0, 0];
+var endPoint;
+
+var delta, deltaX, deltaY;
+var signX = 1;
+var signY = -1;
+
+// Create a square spiral.
+var i;
+for (i = 0; i < count; ++i) {
+  delta = (i + 1) * 2500;
+  if (i % 2 === 0) {
+    signY *= -1;
+  } else {
+    signX *= -1;
+  }
+  deltaX = delta * signX;
+  deltaY = delta * signY;
+  endPoint = [startPoint[0] + deltaX, startPoint[1] + deltaY];
+  features[i] = new ol.Feature({
+    'geometry': new ol.geom.LineString([startPoint, endPoint])
+  });
+  startPoint = endPoint;
+}
+
+var vector = new ol.layer.Vector({
+  source: new ol.source.Vector({
+    features: features
+  }),
+  style: new ol.style.Style({
+    stroke: new ol.style.Stroke({
+      color: '#666666',
+      width: 1
+    })
+  })
+});
+
+var view = new ol.View({
+  center: [0, 0],
+  zoom: 0
+});
+
+var map = new ol.Map({
+  layers: [vector],
+  target: 'map',
+  view: view
+});