a54f36650c
git-svn-id: http://svn.openlayers.org/trunk/openlayers@6497 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
59 lines
2.2 KiB
HTML
59 lines
2.2 KiB
HTML
<html>
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<head>
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<title>OpenLayers Gutter Example</title>
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<link rel="stylesheet" href="../theme/default/style.css" type="text/css" />
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<style type="text/css">
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#map {
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width: 521px;
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height: 512px;
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border: 1px solid gray;
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}
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p.caption {
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width: 512px;
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}
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</style>
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<script src="../lib/OpenLayers.js"></script>
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<script type="text/javascript">
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OpenLayers.IMAGE_RELOAD_ATTEMPTS = 2;
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var map;
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window.onload = function() {
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options = {maxExtent: new OpenLayers.Bounds(-73.5295, 41.2318,
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-69.9097, 42.8883),
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maxResolution: 0.0003}
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map = new OpenLayers.Map('map', options);
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var roads15 = new OpenLayers.Layer.WMS( "Roads (15px gutter)",
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"http://boston.freemap.in/cgi-bin/mapserv?map=/www/freemap.in/boston/map/gmaps.map&",
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{layers: 'roads_200_40'},
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{gutter: 15});
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var roads = new OpenLayers.Layer.WMS( "Roads (no gutter)",
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"http://boston.freemap.in/cgi-bin/mapserv?map=/www/freemap.in/boston/map/gmaps.map&",
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{layers: 'roads_200_40'});
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map.addLayers([roads, roads15]);
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map.addControl(new OpenLayers.Control.LayerSwitcher());
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map.setCenter(new OpenLayers.LonLat(-71.848, 42.2), 0);
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}
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</script>
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</head>
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<body>
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<h1 id="title">Gutter Example</h1>
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<div id="tags"></div>
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<p id="shortdesc">
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Demonstrates map tiling artifacts, and OpenLayer's facility for correcting this distortion.
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</p>
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<div id="map"></div>
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<div id="docs">
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<p class="caption">
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When you render tiles with certain types of symbols, there are artifacts
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at tile edges that make symbology not look continuous. In the center of
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the above map (when it first loads), the large orange road is split
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vertically by a tile. Open the layer switcher and change to the layer
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with a 15 pixel gutter to see how the symbology looks nicer.
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</p>
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</div>
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</body>
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</html>
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