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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>
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