fd768cf170
git-svn-id: http://svn.openlayers.org/trunk/openlayers@10098 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
95 lines
3.9 KiB
HTML
95 lines
3.9 KiB
HTML
<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<title>OpenLayers Resize Features Example</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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<style type="text/css">
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p {
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width: 500px;
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}
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</style>
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<script src="../lib/OpenLayers.js"></script>
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<script type="text/javascript">
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var map, vectorLayer, pointFeature, lineFeature, polygonFeature;
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function init(){
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map = new OpenLayers.Map('map');
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var layer = new OpenLayers.Layer.WMS( "OpenLayers WMS",
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"http://labs.metacarta.com/wms/vmap0", {layers: 'basic'} );
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map.addLayer(layer);
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var style_blue = OpenLayers.Util.extend({}, OpenLayers.Feature.Vector.style['default']);
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style_blue.strokeColor = "blue";
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style_blue.fillColor = "blue";
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var style_green = {
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strokeColor: "#339933",
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strokeOpacity: 1,
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strokeWidth: 3,
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pointRadius: 6,
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pointerEvents: "visiblePainted"
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};
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vectorLayer = new OpenLayers.Layer.Vector("Simple Geometry");
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// create a point feature
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var point = new OpenLayers.Geometry.Point(-110, 45);
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pointFeature = new OpenLayers.Feature.Vector(point, null, style_blue);
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// create a line feature from a list of points
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var pointList = [];
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var newPoint = point;
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for(var p=0; p<5; ++p) {
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newPoint = new OpenLayers.Geometry.Point(newPoint.x + Math.random(1),
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newPoint.y + Math.random(1));
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pointList.push(newPoint);
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}
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lineFeature = new OpenLayers.Feature.Vector(
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new OpenLayers.Geometry.LineString(pointList),null,style_green);
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// create a polygon feature from a linear ring of points
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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) + 1;
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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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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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vectorLayer.addFeatures([pointFeature, lineFeature, polygonFeature]);
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}
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var origin = new OpenLayers.Geometry.Point(-111.04, 45.68);
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function resizeFeatures(scale) {
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pointFeature.geometry.resize(scale, origin);
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lineFeature.geometry.resize(scale, origin);
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polygonFeature.geometry.resize(scale, origin);
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vectorLayer.redraw();
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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">Resize Features Programatically</h1>
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<p id="shortdesc">
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Demonstration of how to use the geometry resize methods to
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change feature sizes programatically.
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</p>
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<div id="map" class="smallmap"></div>
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<p>This example demonstrates how features can be resized. There is not yet
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a control built that provides a tool for resizing, but the geometry.resize
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method can be accessed to resize programmatically.</p>
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<p>Make the features <a href="javascript: resizeFeatures(1.5);">bigger</a>
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or <a href="javascript: resizeFeatures(1 / 1.5);">smaller</a>.
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</body>
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</html>
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