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+<!DOCTYPE html>
+<html>
+ <head>
+ <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
+ <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
+ <meta name="apple-mobile-web-app-capable" content="yes">
+ <title>OpenLayers Polygon Hole Digitizing</title>
+ <link rel="stylesheet" href="../theme/default/style.css" type="text/css">
+ <link rel="stylesheet" href="style.css" type="text/css">
+ <style>
+ #controlToggle li {
+ list-style: none;
+ }
+ .olControlAttribution {
+ font-size: 9px;
+ bottom: 2px;
+ }
+ #output {
+ margin: 1em;
+ font-size: 0.9em;
+ }
+ </style>
+ </head>
+ <body>
+ <h1 id="title">Drawing Holes in Polygons</h1>
+ <div id="tags">
+ draw polygon hole
+ </div>
+ <p id="shortdesc">
+ The DrawFeature control can be used to digitize donut polygons.
+ </p>
+
+ <div id="map" class="smallmap"></div>
+ <ul id="controlToggle">
+ <li>
+ <input type="radio" name="type" value="none" id="noneToggle"
+ onclick="toggleControl(this);" checked="checked">
+ <label for="noneToggle">navigate</label>
+ </li>
+ <li>
+ <input type="radio" name="type" value="polygon" id="polygonToggle" onclick="toggleControl(this);">
+ <label for="polygonToggle">draw polygon</label>
+ </li>
+ </ul>
+ <div id="output"></div>
+ <div id="docs">
+ <p>
+ To digitize holes in polygons, hold down the <code>Alt</code>
+ key and draw over an existing polygon. By default, the
+ <code>Shift</code> key triggers freehand drawing. Use a
+ combination of the <code>Shift</code> and <code>Alt</code> keys
+ to digitize holes in freehand mode.
+ </p>
+ <p>
+ See the <a href="donut.js" target="_blank">
+ donut.js source</a> for details on how this is done.
+ </p>
+ </div>
+ <script src="../lib/OpenLayers.js"></script>
+ <script src="donut.js"></script>
+ </body>
+</html>