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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: Transformation Box</title>
- <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" type="text/javascript"></script>
- <script type="text/javascript">
- var map, control;
-
- function init(){
- map = new OpenLayers.Map('map', {allOverlays: true});
-
- // allow testing of specific renderers via "?renderer=Canvas", etc
- var renderer = OpenLayers.Util.getParameters(window.location.href).renderer;
- renderer = (renderer) ? [renderer] : OpenLayers.Layer.Vector.prototype.renderers;
-
- // the layer that we want to transform features on
- var vectorLayer = new OpenLayers.Layer.Vector("Simple Geometry", {
- styleMap: new OpenLayers.StyleMap({
- // a nice style for the transformation box
- "transform": new OpenLayers.Style({
- display: "${getDisplay}",
- cursor: "${role}",
- pointRadius: 5,
- fillColor: "white",
- fillOpacity: 1,
- strokeColor: "black"
- }, {
- context: {
- getDisplay: function(feature) {
- // hide the resize handle at the south-east corner
- return feature.attributes.role === "se-resize" ? "none" : "";
- }
- }
- }),
- "rotate": new OpenLayers.Style({
- display: "${getDisplay}",
- pointRadius: 10,
- fillColor: "#ddd",
- fillOpacity: 1,
- strokeColor: "black"
- }, {
- context: {
- getDisplay: function(feature) {
- // only display the rotate handle at the south-east corner
- return feature.attributes.role === "se-rotate" ? "" : "none";
- }
- }
- })
- }),
- renderers: renderer
- });
-
- // create the TransformFeature control, using the renderIntent
- // from above
- control = new OpenLayers.Control.TransformFeature(vectorLayer, {
- renderIntent: "transform",
- rotationHandleSymbolizer: "rotate"
- });
- map.addControl(control);
-
- // create a polygon feature from a linear ring of points
- var point = new OpenLayers.Geometry.Point(-111.04, 45.68);
- var pointList = [];
- for(var p=0; p<6; ++p) {
- var a = p * (2 * Math.PI) / 7;
- var r = Math.random(1) + 2;
- var newPoint = new OpenLayers.Geometry.Point(point.x + (r * Math.cos(a)),
- point.y + (r * Math.sin(a)));
- pointList.push(newPoint);
- }
- pointList.push(pointList[0]);
-
- var linearRing = new OpenLayers.Geometry.LinearRing(pointList);
- var polygonFeature = new OpenLayers.Feature.Vector(
- new OpenLayers.Geometry.Polygon([linearRing]));
-
-
- map.addLayer(vectorLayer);
- map.setCenter(new OpenLayers.LonLat(point.x, point.y), 5);
- var anotherFeature = polygonFeature.clone();
- polygonFeature.geometry.move(-3, 0);
- anotherFeature.geometry.move(3, 0);
- vectorLayer.addFeatures([polygonFeature, anotherFeature]);
-
- // start with the transformation box on polygonFeature
- control.setFeature(polygonFeature, {rotation: 45, scale: 0.5, ratio: 1.5});
- }
- </script>
- </head>
- <body onload="init()">
-<h1 id="title">Vector Feature Transformation Box Example</h1>
-
-<div id="tags">
- vector, feature, transformation, stylemap
-</div>
-<p id="shortdesc">
- Shows the use of the TransformFeature control.
-</p>
-<div style="text-align: right">
- <div dir="rtl" id="map" class="smallmap"></div>
-</div>
-<div id="docs">
- <p>This example shows transformation of vector features with a
- tranformation box. Grab one of the handles to resize the feature.
- Holding the SHIFT key will preserve the aspect ratio. Use the gray
- handle to rotate the feature and hold the SHIFT key to only rotate
- in 45° increments.
- </p>
- <p>In this example, the transformation box has been set on the left
- feature, with a rotation preset of 45°. Clicking on the right feature
- will set it for transformation, starting with an unrotated box.
- Dragging a feature or the box edges will move it around.
- </p>
-</div>
-
- </body>
-</html>
-