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<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
<meta name="apple-mobile-web-app-capable" content="yes">
<link rel="stylesheet" href="../theme/default/style.css" type="text/css">
<link rel="stylesheet" href="style.css" type="text/css">
<script src="../lib/OpenLayers.js"></script>
<script type="text/javascript">
var map, ol_wms, ww, ww2;
function init(){
map = new OpenLayers.Map('map', {'maxResolution': .28125, tileSize: new OpenLayers.Size(512, 512)});
ol_wms = new OpenLayers.Layer.WMS( "OpenLayers WMS",
"http://vmap0.tiles.osgeo.org/wms/vmap0?", {layers: 'basic'} );
ww = new OpenLayers.Layer.WorldWind( "Bathy",
"http://worldwind25.arc.nasa.gov/tile/tile.aspx?", 36, 4,
{T:"bmng.topo.bathy.200406"});
ww2 = new OpenLayers.Layer.WorldWind( "LANDSAT",
"http://worldwind25.arc.nasa.gov/tile/tile.aspx", 2.25, 4,
{T:"105"});
map.addLayers([ol_wms, ww, ww2]);
map.addControl(new OpenLayers.Control.LayerSwitcher());
map.setCenter(new OpenLayers.LonLat(-71.4, 42.3), 6);
}
</script>
</head>
<body onload="init()">
<h1 id="title">WorldWind layers Example</h1>
<div id="tags">
worldwind, tile
</div>
<p id="shortdesc">
Shows the use of the Tiled WorldWind layers.
</p>
<div id="map" class="smallmap"></div>
<div id="docs">
<p>This is a demonstration of using Tiled WorldWind layers.
WorldWind requires you to define a "LZTD" -- the 3rd param of the
constructor -- and the number of zoom levels it supports. When a
worldwind layer is not visible at a given tile level, and empty
tile is placed there instead. Note that the maxResolution of the
map times 512px, must be a multiple of a power of two different
from the LZTD -- in this case, .28125 * 512 is 144, which is 36*4,
and 2.25*64. This example has a 'Bathy' layer, visible as you zoom
out, and a 'landsat' layer, visible as you zoom in, both visible at
zoom level 6.</p>
</div>
</body>
</html>
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