Regular Shapes

Example of some Regular Shape styles.

<!DOCTYPE html>
<html>
  <head>
    <title>Regular Shapes</title>
    <link rel="stylesheet" href="https://openlayers.org/en/v4.6.4/css/ol.css" type="text/css">
    <!-- The line below is only needed for old environments like Internet Explorer and Android 4.x -->
    <script src="https://cdn.polyfill.io/v2/polyfill.min.js?features=requestAnimationFrame,Element.prototype.classList,URL"></script>
    <script src="https://openlayers.org/en/v4.6.4/build/ol.js"></script>
  </head>
  <body>
    <div id="map" class="map"></div>
    <script>
      var stroke = new ol.style.Stroke({color: 'black', width: 2});
      var fill = new ol.style.Fill({color: 'red'});

      var styles = {
        'square': new ol.style.Style({
          image: new ol.style.RegularShape({
            fill: fill,
            stroke: stroke,
            points: 4,
            radius: 10,
            angle: Math.PI / 4
          })
        }),
        'triangle': new ol.style.Style({
          image: new ol.style.RegularShape({
            fill: fill,
            stroke: stroke,
            points: 3,
            radius: 10,
            rotation: Math.PI / 4,
            angle: 0
          })
        }),
        'star': new ol.style.Style({
          image: new ol.style.RegularShape({
            fill: fill,
            stroke: stroke,
            points: 5,
            radius: 10,
            radius2: 4,
            angle: 0
          })
        }),
        'cross': new ol.style.Style({
          image: new ol.style.RegularShape({
            fill: fill,
            stroke: stroke,
            points: 4,
            radius: 10,
            radius2: 0,
            angle: 0
          })
        }),
        'x': new ol.style.Style({
          image: new ol.style.RegularShape({
            fill: fill,
            stroke: stroke,
            points: 4,
            radius: 10,
            radius2: 0,
            angle: Math.PI / 4
          })
        })
      };


      var styleKeys = ['x', 'cross', 'star', 'triangle', 'square'];
      var count = 250;
      var features = new Array(count);
      var e = 4500000;
      for (var i = 0; i < count; ++i) {
        var coordinates = [2 * e * Math.random() - e, 2 * e * Math.random() - e];
        features[i] = new ol.Feature(new ol.geom.Point(coordinates));
        features[i].setStyle(styles[styleKeys[Math.floor(Math.random() * 5)]]);
      }

      var source = new ol.source.Vector({
        features: features
      });

      var vectorLayer = new ol.layer.Vector({
        source: source
      });

      var map = new ol.Map({
        layers: [
          vectorLayer
        ],
        target: 'map',
        view: new ol.View({
          center: [0, 0],
          zoom: 2
        })
      });
    </script>
  </body>
</html>