openlayers
Version:
Build tools and sources for developing OpenLayers based mapping applications
39 lines (35 loc) • 1.1 kB
JavaScript
goog.require('ol.Map');
goog.require('ol.View');
goog.require('ol.extent');
goog.require('ol.layer.Image');
goog.require('ol.layer.Tile');
goog.require('ol.proj');
goog.require('ol.source.ImageStatic');
goog.require('ol.source.OSM');
proj4.defs('EPSG:27700', '+proj=tmerc +lat_0=49 +lon_0=-2 +k=0.9996012717 ' +
'+x_0=400000 +y_0=-100000 +ellps=airy ' +
'+towgs84=446.448,-125.157,542.06,0.15,0.247,0.842,-20.489 ' +
'+units=m +no_defs');
var imageExtent = [0, 0, 700000, 1300000];
var map = new ol.Map({
layers: [
new ol.layer.Tile({
source: new ol.source.OSM()
}),
new ol.layer.Image({
source: new ol.source.ImageStatic({
url: 'https://upload.wikimedia.org/wikipedia/commons/thumb/1/18/' +
'British_National_Grid.svg/2000px-British_National_Grid.svg.png',
crossOrigin: '',
projection: 'EPSG:27700',
imageExtent: imageExtent
})
})
],
target: 'map',
view: new ol.View({
center: ol.proj.transform(
ol.extent.getCenter(imageExtent), 'EPSG:27700', 'EPSG:3857'),
zoom: 4
})
});