OpenLayers示例代码：常规形状
OpenLayers示例代码：常规形状
<!DOCTYPE html>
<html>
<head>
<title>Regular Shapes</title>
<link rel="stylesheet" href="https://openlayers.org/en/v4.0.1/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/v4.0.1/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>
说明：
OpenLayers示例代码：常规形状
