06cbeb2f11
conversions to/from lonlat/px need to take into account the offset of the layersContainerDiv. I have introduced the following functions for converting between layer and screen pixel values: getLayerPxFromScreenPx() and getScreenPxFromLayerPx() they are pretty self-explanitory. I then renamed: getPixelFromLonLat() and getLonLatFromPixel() to: getScreenPxFromLonLat() and getLonLatFroScreenmPx() and added: getLayerPxFromLonLat() and getLonLatFromLayerPx() updates were made throughout the code, demos, and tests so everything should still run smoothly. -e- git-svn-id: http://svn.openlayers.org/trunk/openlayers@329 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
79 lines
2.8 KiB
HTML
79 lines
2.8 KiB
HTML
<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<meta http-equiv="imagetoolbar" content="no"> <!--ie image gizmo OFF!-->
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<style type="text/css">
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#map {
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width: 800px;
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height: 475px;
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border: 1px solid black;
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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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<!--
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var map, layer, popup;
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var marker, markers;
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function init(){
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map = new OpenLayers.Map('map');
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layer = new OpenLayers.Layer.WMS( "OpenLayers WMS",
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"http://octo.metacarta.com/cgi-bin/mapserv",
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{map: '/mapdata/vmap_wms.map', layers: 'basic', format: 'image/jpeg'} );
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map.addLayer(
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new OpenLayers.Layer.WMS("NASA Mosaic",
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"http://wms.jpl.nasa.gov/wms.cgi",
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{"EXCEPTIONS" : "application/vnd.ogc.se_inimage",
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"format" : "image/jpeg",
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layers:"modis,global_mosaic"}
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));
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map.addLayer(layer);
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markers = new OpenLayers.Layer.Markers( "Markers" );
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map.addLayer(markers);
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map.setCenter(new OpenLayers.LonLat(0, 0), 0);
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map.addControl(new OpenLayers.Control.LayerSwitcher());
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}
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function changer() {
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var lon = map.getLonLatFromLayerPx(new OpenLayers.Pixel(0,0)).lon;
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var lat = map.getLonLatFromLayerPx(new OpenLayers.Pixel(0,0)).lat;
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var slon = map.getLonLatFromScreenPx(new OpenLayers.Pixel(0,0)).lon;
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var slat = map.getLonLatFromScreenPx(new OpenLayers.Pixel(0,0)).lat;
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alert("lon=" + lon + " lat=" + lat
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+ "slon=" + slon + " slat=" + slat);
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}
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function add() {
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var icon = new OpenLayers.Icon('http://boston.openguides.org/markers/AQUA.png',new OpenLayers.Size(10,17));
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marker = new OpenLayers.Marker(new OpenLayers.LonLat(0,00), icon);
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markers.addMarker(marker);
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}
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function destroy() {
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popup.destroy();
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}
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function remove() {
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map.removePopup(popup);
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}
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// -->
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</script>
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</head>
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<body onload="init()">
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<h1>OpenLayers Example</h1>
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<div id="map"></div>
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<div style="background-color:purple" onclick="add()"> click to add popup to map</div>
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<div style="background-color:blue" onclick="changer()"> click to get lon/lat for pixel point(0,0)</div>
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<div style="background-color:red" onclick="destroy()"> click to destroy the popup</div>
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<div style="background-color:green" onclick="remove()"> click to remove the popup from map</div>
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</body>
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</html>
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