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WorldWind example has some documentation on the layer and the difficulties it presents.

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git-svn-id: http://svn.openlayers.org/trunk/openlayers@1492 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
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crschmidt
2006-09-19 23:39:18 +00:00
parent 42cb6b1fc3
commit a558ad0d88
1 changed files with 10 additions and 7 deletions
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17
examples/worldwind.html
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@@ -10,16 +10,17 @@
<script src="../lib/OpenLayers.js"></script>
<script type="text/javascript">
<!--
var ol_wms, ww, ww2;
function init(){
var map = new OpenLayers.Map('map', {'maxResolution': .0703125*4, tileSize: new OpenLayers.Size(512, 512)});
var map = new OpenLayers.Map('map', {'maxResolution': .28125, tileSize: new OpenLayers.Size(512, 512)});
var ol_wms = new OpenLayers.Layer.WMS( "OpenLayers WMS",
"http://labs.metacarta.com/wms/vmap0?", {layers: 'basic'} );
ol_wms = new OpenLayers.Layer.WMS( "OpenLayers WMS",
"http://labs.metacarta.com/wms/vmap0?", {layers: 'basic'} );
var ww = new OpenLayers.Layer.WorldWind( "Bathy",
"http://worldwind25.arc.nasa.gov/tile/tile.aspx?", 36, 4,
{T:"bmng.topo.bathy.200406"});
var ww2 = new OpenLayers.Layer.WorldWind( "LANDSAT",
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"});
@@ -35,5 +36,7 @@
<body onload="init()">
<h1>OpenLayers Example</h1>
<div id="map"></div>
<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.</p>
<p>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>
</body>
</html>