586f393492
This change adds a lot of flexibility to working with tile layers: Sources where the server projection or tile grid do not matter can now be constructed without specifying a projection or tile grid. The tileUrlFunction/imageUrlFunction now also creates updated URLs when the params of the layer change, so things like mergeNewParams in ol2 will be possible. A nice side effect of this whole change is that there is no more duplicated code between tiled and single image WMS layers. While I was at it, I also fixed a WMS 1.1.1 axis order issue and incorrect STYLES params (STYLES=& instead of STYLES&).
74 lines
2.4 KiB
JavaScript
74 lines
2.4 KiB
JavaScript
goog.require('ol.Attribution');
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goog.require('ol.Collection');
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goog.require('ol.Coordinate');
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goog.require('ol.Extent');
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goog.require('ol.Map');
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goog.require('ol.Projection');
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goog.require('ol.ProjectionUnits');
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goog.require('ol.RendererHints');
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goog.require('ol.View2D');
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goog.require('ol.layer.ImageLayer');
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goog.require('ol.layer.TileLayer');
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goog.require('ol.projection');
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goog.require('ol.source.SingleImageWMS');
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goog.require('ol.source.TiledWMS');
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var epsg21781 = new ol.Projection('EPSG:21781', ol.ProjectionUnits.METERS,
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// Validity extent from http://spatialreference.org
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new ol.Extent(485869.5728, 76443.1884, 837076.5648, 299941.7864));
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ol.projection.addProjection(epsg21781);
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// We could give the single image source a set of resolutions. This prevents the
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// source from requesting images of arbitrary resolutions. To try it, uncomment
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// the block below and the resolutions option in the SingleImageWMS config.
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/*
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var projectionExtent = epsg21781.getExtent();
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var maxResolution = Math.max(projectionExtent.getWidth(),
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projectionExtent.getHeight()) / 256;
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var resolutions = new Array(10);
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for (var i = 0; i < 10; ++i) {
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resolutions[i] = maxResolution / Math.pow(2.0, i);
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}
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*/
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var extent = new ol.Extent(420000, 30000, 900000, 350000);
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var layers = new ol.Collection([
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new ol.layer.TileLayer({
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source: new ol.source.TiledWMS({
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url: 'http://wms.geo.admin.ch/',
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attributions: [new ol.Attribution(
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'© ' +
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'<a href="http://www.geo.admin.ch/internet/geoportal/en/home.html">' +
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'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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extent: extent
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})
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}),
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new ol.layer.ImageLayer({
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source: new ol.source.SingleImageWMS({
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//resolutions: resolutions,
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url: 'http://wms.geo.admin.ch/',
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attributions: [new ol.Attribution(
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'© ' +
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'<a href="http://www.geo.admin.ch/internet/geoportal/en/home.html">' +
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'National parks / geo.admin.ch</a>')],
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params: {'LAYERS': 'ch.bafu.schutzgebiete-paerke_nationaler_bedeutung'}
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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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layers: layers,
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renderers: ol.RendererHints.createFromQueryData(),
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target: 'map',
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view: new ol.View2D({
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projection: epsg21781,
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center: new ol.Coordinate(660000, 190000),
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zoom: 2
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})
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});
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