7da6a3540e
thanks to all the contributors who helped put this together. I'm not exactly sure of what's going to happen with this, but for now, at http://openlayers.org/dev/doc/examples.html you can see links to all the examples *with descriptions*. Hooray! git-svn-id: http://svn.openlayers.org/trunk/openlayers@5362 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
178 lines
6.6 KiB
HTML
178 lines
6.6 KiB
HTML
<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<title>OpenLayers Regular Polygon Example</title>
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<style type="text/css">
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html, body {
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margin: 0;
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padding: 1em;
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font: 0.9em Verdana, Arial, sans serif;
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}
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input, select, textarea {
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font: 1em Verdana, Arial, sans serif;
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}
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#map {
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width: 512px;
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height: 350px;
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border: 1px solid gray;
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}
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p {
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width: 512px;
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}
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#config {
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margin-top: 1em;
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width: 512px;
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position: relative;
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height: 8em;
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}
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#controls {
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padding-left: 2em;
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margin-left: 0;
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width: 12em;
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}
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#controls li {
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padding-top: 0.5em;
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list-style: none;
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}
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#options {
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font-size: 1em;
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top: 0;
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margin-left: 15em;
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position: absolute;
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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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var map, polygonControl;
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OpenLayers.Util.onImageLoadErrorColor = "transparent";
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function init(){
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map = new OpenLayers.Map('map');
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var wmsLayer = new OpenLayers.Layer.WMS( "OpenLayers WMS",
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"http://labs.metacarta.com/wms/vmap0?", {layers: 'basic'});
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var polygonLayer = new OpenLayers.Layer.Vector("Polygon Layer");
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map.addLayers([wmsLayer, polygonLayer]);
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map.addControl(new OpenLayers.Control.LayerSwitcher());
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map.addControl(new OpenLayers.Control.MousePosition());
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polyOptions = {sides: 4};
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polygonControl = new OpenLayers.Control.DrawFeature(polygonLayer,
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OpenLayers.Handler.RegularPolygon,
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{handlerOptions: polyOptions});
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map.addControl(polygonControl);
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map.setCenter(new OpenLayers.LonLat(0, 0), 3);
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document.getElementById('noneToggle').checked = true;
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document.getElementById('irregularToggle').checked = false;
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}
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function setOptions(options) {
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polygonControl.handler.setOptions(options);
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}
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function setSize(fraction) {
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var radius = fraction * map.getExtent().getHeight();
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polygonControl.handler.setOptions({radius: radius,
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angle: 0});
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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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<h2 id="title">OpenLayers Regular Polygon Example</h2>
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<p id="shortdesc">
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Shows how to use the RegularPolygon handler to draw features with
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different numbers of sides.
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</p>
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<div id="map"></div>
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<div id="config">
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<ul id="controls"><b>Map Controls</b>
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<li>
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<input type="radio" name="type"
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value="none" id="noneToggle"
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onclick="polygonControl.deactivate()"
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checked="checked" />
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<label for="noneToggle">navigate</label>
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</li>
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<li>
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<input type="radio" name="type"
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value="polygon" id="polygonToggle"
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onclick="polygonControl.activate()" />
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<label for="polygonToggle">draw polygon</label>
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</li>
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</ul>
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<table id="options">
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<tbody>
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<tr>
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<th>Draw Option</th>
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<th>Value</th>
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</tr>
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<tr>
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<td>
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shape
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</td>
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<td>
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<select name="sides"
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onchange="setOptions({sides: parseInt(this.value)})">
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<option value="3">triangle</option>
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<option value="4" selected="selected">square</option>
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<option value="5">pentagon</option>
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<option value="6">hexagon</option>
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<option value="40">circle</option>
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</select>
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</td>
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</tr>
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<tr>
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<td>
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snap angle
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</td>
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<td>
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<select name="angle"
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onchange="setOptions({snapAngle: parseFloat(this.value)})">
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<option value="" selected="selected">no snap</option>
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<option value="15">15°</option>
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<option value="45">45°</option>
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<option value="90">90°</option>
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</select>
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</td>
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</tr>
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<tr>
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<td>
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size
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</td>
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<td>
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<select name="size"
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onchange="setSize(parseFloat(this.value))">
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<option value="" selected="selected">variable</option>
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<option value="0.1">small</option>
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<option value="0.2">medium</option>
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<option value="0.4">large</option>
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</select>
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</td>
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</tr>
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<tr>
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<td>
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irregular
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</td>
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<td>
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<input id="irregularToggle" name="irregular"
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type="checkbox"
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onchange="setOptions({irregular: this.checked})") />
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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<p>
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Regular polygons can be drawn by pointing a DrawFeature control to the
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RegularPolygon handler class. The options above demonstrate how the
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handler can be configured. Note if you are in angle snapping mode (if
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the snap angle is non-null) and you hold down the <b>Shift</b> key, you
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will toggle to non-snapping mode.
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</p>
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<p>
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The <i>irregular</i> option allows drawing of irregular polygons. With this option, the fixed radius option is ignored.
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</body>
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</html>
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