1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 | <html xmlns="http://www.w3.org/1999/xhtml"> <head> <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; function init() { map = new OpenLayers.Map('map', {controls: [new OpenLayers.Control.Navigation(), new OpenLayers.Control.PanZoomBar()], numZoomLevels: 10 }); var wms = new OpenLayers.Layer.WMS( "OpenLayers WMS", "http://labs.metacarta.com/wms/vmap0", {layers: 'basic'} ); map.addLayers([wms]); map.events.register("moveend", null, displayZoom); map.zoomToMaxExtent(); update(document.getElementById("fractional")); } function displayZoom() { document.getElementById("zoom").innerHTML = map.zoom.toFixed(4); } function update(input) { map.fractionalZoom = input.checked; map.zoomTo(Math.round(map.zoom)); } </script> </head> <body onload="init()"> <h1 id="title">Fractional Zoom Example</h1> <div id="tags"> </div> <p id="shortdesc"> Shows the use of a map with fractional (or non-discrete) zoom levels. </p> <div id="map" class="smallmap"></div> <input type="checkbox" name="fractional" id="fractional" checked="checked" onclick="update(this)" /> <label for="fractional">Fractional Zoom</label> (zoom: <span id="zoom"></span>) <br /><br /> <div id="docs"> <p> Setting the map.fractionalZoom property to true allows zooming to an arbitrary level (between the min and max resolutions). This can be demonstrated by shift-dragging a box to zoom to an arbitrary extent. </p> </div> </body> </html> |