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<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Planet Extraction</title>
<style type="text/css">
html, body {
margin: 0;
padding: 1em;
font: 0.9em Verdana, Arial, sans serif;
}
input, select, textarea {
font: 1em Verdana, Arial, sans serif;
}
.input {
border: none;
width: 100px;
}
.bbox {
font-size: 12px;
color: #000;
background-color: #fff;
width: 300px;
border: 1px solid gray;
}
.button {
width: 200px;
height: 50px;
font-weight: bold;
}
#map {
float: left;
width: 500px;
height: 500px;
border: 1px solid gray;
}
#controls {
float: left;
}
</style>
<script src="http://openlayers.org/dev/lib/OpenLayers.js"></script>
<script type="text/javascript">
var map, polygonControl, polygonLayer, bbox_set;
OpenLayers.Util.onImageLoadErrorColor = "transparent";
function init(){
map = new OpenLayers.Map('map');
var wmsLayer = new OpenLayers.Layer.WMS( "OpenLayers WMS",
"http://labs.metacarta.com/wms/vmap0?", {layers: 'basic'});
polygonLayer = new OpenLayers.Layer.Vector("Polygon Layer");
map.addLayers([wmsLayer, polygonLayer]);
map.addControl(new OpenLayers.Control.LayerSwitcher());
map.addControl(new OpenLayers.Control.MousePosition());
polyOptions = {sides: 4, irregular: true};
polygonControl = new OpenLayers.Control.DrawFeature(polygonLayer,
OpenLayers.Handler.RegularPolygon,
{handlerOptions: polyOptions});
//alert(polygonControl);
map.addControl(polygonControl);
polygonControl.featureAdded=featureInsert;
map.setCenter(new OpenLayers.LonLat(0, 0), 3);
document.getElementById('noneToggle').checked = true;
//document.getElementById('irregularToggle').checked = false;
//var polyOptions = {sides: 4, irregular: true};
//polygonControl.handler.setOptions(polyOptions);
}
function featureInsert(feature){
var old=[];
for (var i = 0; i < polygonLayer.features.length; i++) {
if (polygonLayer.features[i] != feature) {
old.push(polygonLayer.features[i]);
}
}
polygonLayer.destroyFeatures(old);
var bounds = feature.geometry.getBounds();
document.form.bounds_top.value = bounds.top;
document.form.bounds_right.value = bounds.right;
document.form.bounds_btm.value = bounds.bottom;
document.form.bounds_left.value = bounds.left;
bbox_set=true;
}
function download() {
var bbox = document.form.bounds_left.value + "," +
document.form.bounds_btm.value + "," +
document.form.bounds_right.value + "," +
document.form.bounds_top.value;
if (bbox_set) {
location.href="http://maps.navit-project.org/api/map?bbox=" + bbox;
} else {
alert("Please select a bounding box first\n");
}
}
function setOptions(options) {
polygonControl.handler.setOptions(options);
}
function setSize(fraction) {
var radius = fraction * map.getExtent().getHeight();
polygonControl.handler.setOptions({radius: radius,
angle: 0});
}
</script>
</head>
<body onload="init()">
<h2>Planet extract</h2>
<div id="map"></div>
<div id="controls">
<ul style="list-style:none;"><b>Map Controls</b>
<li>
<input type="radio" name="type"
value="none" id="noneToggle"
onclick="polygonControl.deactivate()"
checked="checked" />
<label for="noneToggle">navigate</label>
</li>
<li>
<input type="radio" name="type"
value="polygon" id="polygonToggle"
onclick="polygonControl.activate()" />
<label for="polygonToggle">select</label>
</li>
</ul>
<ul style="list-style:none"><b>Fetch box</b>
<form name="form">
<li>Top Right: <input type="text" name="bounds_top" class="input">,
<input type="text" name="bounds_right" class="input"></li>
<li>Bottom left: <input type="text" name="bounds_btm" class="input">,
<input type="text" name="bounds_left" class="input"></li>
</form>
<li> </li>
<li><input type="button" class="button" value="Get map!" onclick="javascript:download()"></li>
</ul>
</div>
</body>
</html>
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