e8960054a9
git-svn-id: http://svn.openlayers.org/trunk/openlayers@12082 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
111 lines
4.5 KiB
HTML
111 lines
4.5 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
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<meta name="apple-mobile-web-app-capable" content="yes">
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<title>OpenLayers: Transformation Box</title>
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<link rel="stylesheet" href="../theme/default/style.css" type="text/css">
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<link rel="stylesheet" href="style.css" type="text/css">
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<script src="../lib/OpenLayers.js" type="text/javascript"></script>
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<script type="text/javascript">
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var map, control;
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function init(){
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map = new OpenLayers.Map('map', {allOverlays: true});
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// context for appropriate scale/resize cursors
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var cursors = ["sw-resize", "s-resize", "se-resize",
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"e-resize", "ne-resize", "n-resize", "nw-resize", "w-resize"];
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var context = {
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getCursor: function(feature){
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var i = OpenLayers.Util.indexOf(control.handles, feature);
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var cursor = "inherit";
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if(i !== -1) {
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i = (i + 8 + Math.round(control.rotation / 90) * 2) % 8;
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cursor = cursors[i];
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}
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return cursor;
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}
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};
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// a nice style for the transformation box
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var style = new OpenLayers.Style({
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cursor: "${getCursor}",
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pointRadius: 5,
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fillColor: "white",
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fillOpacity: 1,
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strokeColor: "black"
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}, {context: context});
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// the layer that we want to transform features on
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var vectorLayer = new OpenLayers.Layer.Vector("Simple Geometry", {
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styleMap: new OpenLayers.StyleMap({
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"transform": style
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})
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});
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// create the TransformFeature control, using the renderIntent
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// from above
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control = new OpenLayers.Control.TransformFeature(vectorLayer, {
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renderIntent: "transform"
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});
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map.addControl(control);
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// create a polygon feature from a linear ring of points
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var point = new OpenLayers.Geometry.Point(-111.04, 45.68);
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var pointList = [];
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for(var p=0; p<6; ++p) {
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var a = p * (2 * Math.PI) / 7;
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var r = Math.random(1) + 2;
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var newPoint = new OpenLayers.Geometry.Point(point.x + (r * Math.cos(a)),
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point.y + (r * Math.sin(a)));
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pointList.push(newPoint);
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}
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pointList.push(pointList[0]);
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var linearRing = new OpenLayers.Geometry.LinearRing(pointList);
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var polygonFeature = new OpenLayers.Feature.Vector(
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new OpenLayers.Geometry.Polygon([linearRing]));
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map.addLayer(vectorLayer);
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map.setCenter(new OpenLayers.LonLat(point.x, point.y), 5);
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var anotherFeature = polygonFeature.clone();
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polygonFeature.geometry.move(-3, 0);
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anotherFeature.geometry.move(3, 0);
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vectorLayer.addFeatures([polygonFeature, anotherFeature]);
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// start with the transformation box on polygonFeature
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control.setFeature(polygonFeature, {rotation: 45, scale: 0.5, ratio: 1.5});
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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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<h1 id="title">Vector Feature Transformation Box Example</h1>
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<div id="tags">
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vector, feature, transformation, stylemap
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</div>
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<p id="shortdesc">
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Shows the use of the TransformFeature control.
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</p>
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<div style="text-align: right">
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<div dir="rtl" id="map" class="smallmap"></div>
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</div>
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<div id="docs">
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<p>This example shows transformation of vector features with a
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tranformation box. Grab one of the handles to resize the feature.
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Holding the SHIFT key will preserve the aspect ratio. Position the
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mouse right outside one of the corner handles to rotate the feature,
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and hold the SHIFT key to only rotate in 45° increments.</p>
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<p>In this example, the transformation box has been set on the left
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feature, with a rotation preset of 45°. Clicking on the right feature
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will set it for transformation, starting with an unrotated box.
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Dragging a feature or the box edges will move it around.</p>
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</div>
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</body>
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</html>
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