mirror of
https://github.com/Viglino/ol-ext.git
synced 2026-01-18 17:11:52 +00:00
144 lines
4.2 KiB
HTML
144 lines
4.2 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<!--
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Copyright (c) 2015-2018 Jean-Marc VIGLINO,
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released under CeCILL-B (french BSD like) licence: http://www.cecill.info/
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-->
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<title>ol-ext: Sea level</title>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta name="description" content="Sea level map" />
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<meta name="keywords" content="ol, openlayers, layer, BIL, sea, level" />
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<!-- jQuery -->
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<script type="text/javascript" src="https://code.jquery.com/jquery-1.11.0.min.js"></script>
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<!-- Openlayers -->
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<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/ol@latest/ol.css" />
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<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/ol@latest/dist/ol.js"></script>
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<!-- ol-ext -->
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<link rel="stylesheet" href="../../dist/ol-ext.css" />
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<script type="text/javascript" src="../../dist/ol-ext.js"></script>
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<!-- Pointer events polyfill for old browsers, see https://caniuse.com/#feat=pointer -->
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<script src="https://unpkg.com/elm-pep"></script>
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<!-- filesaver-js -->
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<script type="text/javascript" src="https://cdn.rawgit.com/eligrey/FileSaver.js/aa9f4e0e/FileSaver.min.js"></script>
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<link rel="stylesheet" href="../style.css" />
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<style>
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#level:before {
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content: "+";
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}
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#level:after {
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content: " m";
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}
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input {
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vertical-align: middle;
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}
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</style>
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</head>
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<body >
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<a href="https://github.com/Viglino/ol-ext" class="icss-github-corner"><i></i></a>
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<a href="../../index.html">
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<h1>ol-ext: Sea level</h1>
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</a>
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<div class="info">
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This example use a TileWMS layer with an x-bil (Band Interleaved by Line) image format and a tileLoadFunction
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to "flood" areas below the elevation shown on the sea level slider.
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</div>
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<!-- DIV pour la carte -->
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<div id="map" style="width: 100%; height: 500px;"></div>
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Sea level:
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<input
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type="range" min=0 max=5 step=".1" value=0
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onchange="setLevel(parseFloat(this.value))"
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/> <span id="level">0</span>
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<script>
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/*
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@see
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- https://github.com/awoodruff/canvas-shaded-relief
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- https://github.com/GeodanDemo/hillshaderjs
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- https://github.com/slutske22/leaflet-topography
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- https://observablehq.com/@awoodruff/diy-hillshade
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*/
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var plan = new ol.layer.Geoportail({
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layer: 'GEOGRAPHICALGRIDSYSTEMS.PLANIGNV2',
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className: 'plan',
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});
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plan.addFilter(new ol.filter.CSS({ filter: 'grayscale(1)' }));
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// The map
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var map = new ol.Map ({
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target: 'map',
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view: new ol.View ({
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zoom: 10,
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center: [497835, 5383773]
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}),
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layers: [ plan ]
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});
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map.addControl(new ol.control.LayerSwitcher());
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map.addControl(new ol.control.Permalink({ visible: false }));
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// A set of elevation layers
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var layers = [
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{
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title: 'MNT SRTM3',
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url: 'https://data.geopf.fr/wms-r/wms',
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layer: 'ELEVATION.ELEVATIONGRIDCOVERAGE.SRTM3',
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//extent: [ -20037554.725947514, -8625918.87376409, 20037554.725947514, 8625918.87376409 ]
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},{
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title: 'MNS',
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url: 'https://data.geopf.fr/wms-r/wms',
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layer: 'ELEVATION.ELEVATIONGRIDCOVERAGE.HIGHRES.MNS',
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extent: [ -578959.605490584, 5203133.393641367, 921974.2487313666, 6643289.75487211 ]
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}, {
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title: 'RGE-Alti',
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url: 'https://data.geopf.fr/wms-r/wms',
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layer: 'ELEVATION.ELEVATIONGRIDCOVERAGE.HIGHRES',
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extent: [ -7007874.496280316, -1460624.494037931, 5043253.3127169, 6639937.650114076 ]
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}, {
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title: 'MNT BDAlti V1',
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url: 'https://data.geopf.fr/wms-r/wms',
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layer: 'ELEVATION.ELEVATIONGRIDCOVERAGE',
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extent: [ -7007874.496280316, -1460624.494037931, 5043253.3127169, 6639937.650114076 ]
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}
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];
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// Add tile layer
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var layer = layers[2];
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var elev = new ol.layer.Tile ({
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title: 'Sea level ('+layer.title+')',
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extent: layer.extent,
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minResolution: 0,
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maxResolution: 197231.79878968254,
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source: new ol.source.TileWMS({
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url: layer.url,
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projection: 'EPSG:3857',
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attributions: [ 'Geoservices-IGN' ],
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crossOrigin: 'anonymous',
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params: {
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LAYERS: layer.layer,
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FORMAT: 'image/x-bil;bits=32',
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VERSION: '1.3.0'
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}
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})
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});
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elev.addFilter(new ol.filter.CSS({ blend:'multiply' }));
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map.addLayer(elev);
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elev.getSource().setTileLoadFunction(ol.ext.imageLoader.seaLevelMap(0));
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function setLevel(val) {
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$('#level').text(val);
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elev.getSource().setTileLoadFunction(ol.ext.imageLoader.seaLevelMap(val));
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}
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</script>
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</body>
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</html> |