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Methods for programmatically manipulating sketches while digitizing features. r=bartvde (closes #3343)

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git-svn-id: http://svn.openlayers.org/trunk/openlayers@12103 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
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Tim Schaub
2011-06-17 18:59:16 +00:00
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<!DOCTYPE html>
<html>
<head>
<title>OpenLayers Editing Methods</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0;">
<meta name="apple-mobile-web-app-capable" content="yes">
<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>
</head>
<body>
<h1 id="title">Editing Methods</h1>
<p id="shortdesc">
Demonstrates the use of editing methods for manipulating geometries
while drawing.
</p>
<div id="map" class="smallmap"></div>
<ul id="methods">
<li><a href="#" id="insertXY">insert x,y</a></li>
<li><a href="#" id="insertDeltaXY">insert dx,dy</a></li>
<li><a href="#" id="insertDirectionLength">insert direction/length</a></li>
<li><a href="#" id="insertDeflectionLength">insert deflection/length</a></li>
<li><a href="#" id="finishSketch">finish sketch</a></li>
<li><a href="#" id="cancel">cancel sketch</a></li>
</ul>
<div id="docs">
<p>
The <code>control.insertXY</code> method inserts a point at the given
map coordinates (x, y) immediately prior to the most recent point
(under the mouse).
The <code>control.insertDeltaXY</code> method inserts a point at
the given offset values (dx, dy) from the previously added point.
The <code>control.insertDirectionLength</code> method inserts a
point at offset direction and length from the previously added point.
Direction is measured counter-clockwise from the positive x-axis.
The <code>control.insertDeflectionLength</code> method inserts a
point at offset deflection and length from the previously added point.
Deflection is measured counter-clockwise from the previous line
segment.
The <code>control.finishSketch</code> method completes the current
sketch without adding the point under the user's mouse. This
allows a sketch to be finished without a double-click.
The <code>control.cancel</code> method discards the current
sketch and leaves the control active.
The <code>control.insertXY</code> method may be called before
any points are digitized manually. The other methods have no
effect until at least one point has been added to the sketch.
</p><p>
View the <a href="editing-methods.js" target="_blank">editing-methods.js</a>
source to see how this is done.
</p>
</div>
<script src="editing-methods.js"></script>
</body>
</html>