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diff --git a/misc/openlayers/examples/resize-features.html b/misc/openlayers/examples/resize-features.html new file mode 100644 index 0000000..2bf68f7 --- /dev/null +++ b/misc/openlayers/examples/resize-features.html @@ -0,0 +1,101 @@ +<!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 Resize Features Example</title> + <link rel="stylesheet" href="../theme/default/style.css" type="text/css"> + <link rel="stylesheet" href="style.css" type="text/css"> + <style type="text/css"> + p { + width: 500px; + } + </style> + <script src="../lib/OpenLayers.js"></script> + <script type="text/javascript"> + var map, vectorLayer, pointFeature, lineFeature, polygonFeature; + + function init(){ + map = new OpenLayers.Map('map'); + var layer = new OpenLayers.Layer.WMS( "OpenLayers WMS", + "http://vmap0.tiles.osgeo.org/wms/vmap0", {layers: 'basic'} ); + map.addLayer(layer); + + var style_blue = OpenLayers.Util.extend({}, OpenLayers.Feature.Vector.style['default']); + style_blue.strokeColor = "blue"; + style_blue.fillColor = "blue"; + var style_green = { + strokeColor: "#339933", + strokeOpacity: 1, + strokeWidth: 3, + pointRadius: 6, + pointerEvents: "visiblePainted" + }; + + vectorLayer = new OpenLayers.Layer.Vector("Simple Geometry"); + + // create a point feature + var point = new OpenLayers.Geometry.Point(-110, 45); + pointFeature = new OpenLayers.Feature.Vector(point, null, style_blue); + + // create a line feature from a list of points + var pointList = []; + var newPoint = point; + for(var p=0; p<5; ++p) { + newPoint = new OpenLayers.Geometry.Point(newPoint.x + Math.random(1), + newPoint.y + Math.random(1)); + pointList.push(newPoint); + } + lineFeature = new OpenLayers.Feature.Vector( + new OpenLayers.Geometry.LineString(pointList),null,style_green); + + // create a polygon feature from a linear ring of points + var pointList = []; + for(var p=0; p<6; ++p) { + var a = p * (2 * Math.PI) / 7; + var r = Math.random(1) + 1; + 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); + polygonFeature = new OpenLayers.Feature.Vector( + new OpenLayers.Geometry.Polygon([linearRing])); + + + map.addLayer(vectorLayer); + map.setCenter(new OpenLayers.LonLat(point.x, point.y), 5); + vectorLayer.addFeatures([pointFeature, lineFeature, polygonFeature]); + + } + + var origin = new OpenLayers.Geometry.Point(-111.04, 45.68); + function resizeFeatures(scale) { + pointFeature.geometry.resize(scale, origin); + lineFeature.geometry.resize(scale, origin); + polygonFeature.geometry.resize(scale, origin); + vectorLayer.redraw(); + } + + </script> + </head> + <body onload="init()"> + <h1 id="title">Resize Features Programatically</h1> + <div id="tags"> + vector, feature, resizing, resize, light + </div> + <p id="shortdesc"> + Demonstration of how to use the geometry resize methods to + change feature sizes programatically. + </p> + <div id="map" class="smallmap"></div> + <p>This example demonstrates how features can be resized. There is not yet + a control built that provides a tool for resizing, but the geometry.resize + method can be accessed to resize programmatically.</p> + <p>Make the features <a href="javascript: resizeFeatures(1.5);">bigger</a> + or <a href="javascript: resizeFeatures(1 / 1.5);">smaller</a>. + </body> +</html> |