OpenLayers示例代码：球体Mollweide
OpenLayers示例代码：球体Mollweide
<!DOCTYPE html>
<html>
<head>
<title>Sphere Mollweide</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>
<script src="https://cdnjs.cloudflare.com/ajax/libs/proj4js/2.3.15/proj4.js"></script>
</head>
<body>
<div id="map" class="map"></div>
<script>
proj4.defs('ESRI:53009', '+proj=moll +lon_0=0 +x_0=0 +y_0=0 +a=6371000 ' +
'+b=6371000 +units=m +no_defs');
// Configure the Sphere Mollweide projection object with an extent,
// and a world extent. These are required for the Graticule.
var sphereMollweideProjection = new ol.proj.Projection({
code: 'ESRI:53009',
extent: [-9009954.605703328, -9009954.605703328,
9009954.605703328, 9009954.605703328],
worldExtent: [-179, -89.99, 179, 89.99]
});
var map = new ol.Map({
keyboardEventTarget: document,
layers: [
new ol.layer.Vector({
source: new ol.source.Vector({
url: 'https://openlayers.org/en/v4.0.1/examples/data/geojson/countries-110m.geojson',
format: new ol.format.GeoJSON()
})
})
],
target: 'map',
view: new ol.View({
center: [0, 0],
projection: sphereMollweideProjection,
resolutions: [65536, 32768, 16384, 8192, 4096, 2048],
zoom: 0
})
});
new ol.Graticule({
map: map
});
</script>
</body>
</html>
说明：
OpenLayers示例代码：球体Mollweide
