73 lines
2.2 KiB
JavaScript
73 lines
2.2 KiB
JavaScript
goog.require('ol.Map');
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goog.require('ol.View');
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goog.require('ol.control');
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goog.require('ol.control.ScaleLine');
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goog.require('ol.layer.Image');
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goog.require('ol.proj');
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goog.require('ol.proj.Projection');
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goog.require('ol.source.ImageWMS');
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// Transparent Proj4js support:
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//
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// EPSG:21781 is known to Proj4js because its definition was loaded in the html.
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// Now when we create an ol.proj.Projection instance with the 'EPSG:21781' code,
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// OpenLayers will pick up parameters like units and transform functions from
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// Proj4js.
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//
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// Note that we are setting the projection's extent here, which is used to
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// determine the view resolution for zoom level 0. Recommended values for a
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// projection's validity extent can be found at https://epsg.io/.
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//
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// If you use Proj4js only to transform coordinates, you don't even need to
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// create an ol.proj.Projection instance. ol.proj.get() will take care of it
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// internally.
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var projection = new ol.proj.Projection({
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code: 'EPSG:21781',
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extent: [485869.5728, 76443.1884, 837076.5648, 299941.7864]
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});
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var extent = [420000, 30000, 900000, 350000];
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var layers = [
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new ol.layer.Image({
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extent: extent,
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source: new ol.source.ImageWMS({
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url: 'https://wms.geo.admin.ch/',
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crossOrigin: 'anonymous',
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attributions: '© <a href="http://www.geo.admin.ch/internet/geoportal/' +
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'en/home.html">Pixelmap 1:1000000 / geo.admin.ch</a>',
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params: {
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'LAYERS': 'ch.swisstopo.pixelkarte-farbe-pk1000.noscale',
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'FORMAT': 'image/jpeg'
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},
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serverType: 'mapserver'
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})
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}),
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new ol.layer.Image({
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extent: extent,
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source: new ol.source.ImageWMS({
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url: 'https://wms.geo.admin.ch/',
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crossOrigin: 'anonymous',
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attributions: '© <a href="http://www.geo.admin.ch/internet/geoportal/' +
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'en/home.html">National parks / geo.admin.ch</a>',
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params: {'LAYERS': 'ch.bafu.schutzgebiete-paerke_nationaler_bedeutung'},
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serverType: 'mapserver'
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})
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})
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];
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var map = new ol.Map({
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controls: ol.control.defaults().extend([
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new ol.control.ScaleLine()
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]),
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layers: layers,
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target: 'map',
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view: new ol.View({
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projection: projection,
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center: ol.proj.fromLonLat([8.23, 46.86], projection),
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extent: extent,
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zoom: 2
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})
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});
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