ahocevar
567d32f35f
symbolizer property. Only supported in IE and FF. Patch by zspitzer, modified by me (added some docs, moved code that sets the title tag so it gets executed for externalGraphics. p=zspitzer, r=me (closes #1946) git-svn-id: http://svn.openlayers.org/trunk/openlayers@9097 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
139 lines
5.9 KiB
HTML
139 lines
5.9 KiB
HTML
<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<title>OpenLayers: Vector Features</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;
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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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/*
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* Layer style
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*/
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// we want opaque external graphics and non-opaque internal graphics
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var layer_style = OpenLayers.Util.extend({}, OpenLayers.Feature.Vector.style['default']);
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layer_style.fillOpacity = 0.2;
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layer_style.graphicOpacity = 1;
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/*
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* Blue style
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*/
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var style_blue = OpenLayers.Util.extend({}, layer_style);
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style_blue.strokeColor = "blue";
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style_blue.fillColor = "blue";
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style_blue.graphicName = "star";
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style_blue.pointRadius = 10;
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style_blue.strokeWidth = 3;
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style_blue.rotation = 45;
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style_blue.strokeLinecap = "butt";
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/*
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* Green style
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*/
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var style_green = {
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strokeColor: "#00FF00",
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strokeWidth: 3,
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strokeDashstyle: "dashdot",
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pointRadius: 6,
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pointerEvents: "visiblePainted"
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};
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/*
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* Mark style
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*/
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var style_mark = OpenLayers.Util.extend({}, OpenLayers.Feature.Vector.style['default']);
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// each of the three lines below means the same, if only one of
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// them is active: the image will have a size of 24px, and the
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// aspect ratio will be kept
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// style_mark.pointRadius = 12;
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// style_mark.graphicHeight = 24;
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// style_mark.graphicWidth = 24;
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// if graphicWidth and graphicHeight are both set, the aspect ratio
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// of the image will be ignored
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style_mark.graphicWidth = 24;
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style_mark.graphicHeight = 20;
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style_mark.graphicXOffset = -(style_mark.graphicWidth/2); // this is the default value
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style_mark.graphicYOffset = -style_mark.graphicHeight;
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style_mark.externalGraphic = "../img/marker.png";
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// graphicTitle only works in Firefox and Internet Explorer
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style_mark.graphicTitle = "this is a test tooltip";
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var vectorLayer = new OpenLayers.Layer.Vector("Simple Geometry", {style: layer_style});
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// create a point feature
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var point = new OpenLayers.Geometry.Point(-111.04, 45.68);
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var pointFeature = new OpenLayers.Feature.Vector(point,null,style_blue);
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var point2 = new OpenLayers.Geometry.Point(-105.04, 49.68);
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var pointFeature2 = new OpenLayers.Feature.Vector(point2,null,style_green);
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var point3 = new OpenLayers.Geometry.Point(-105.04, 49.68);
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var pointFeature3 = new OpenLayers.Feature.Vector(point3,null,style_mark);
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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<15; ++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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var 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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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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vectorLayer.addFeatures([pointFeature, pointFeature3, pointFeature2, lineFeature, polygonFeature]);
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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">Drawing Simple Vector Features Example</h1>
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<div id="tags">
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</div>
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<p id="shortdesc">
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Shows the use of the shows drawing simple vector features, in different styles.
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</p>
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<div style="text-align: right">
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<div 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 drawing simple vector features -- point, line, polygon
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in different styles, created 'manually', by constructing the entire style
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object, via 'copy', extending the default style object, and by
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inheriting the default style from the layer.</p>
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<p>It also shows how to use external graphic files for point features
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and how to set their size: If either graphicWidth or graphicHeight is set,
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the aspect ratio of the image will be respected. If both graphicWidth and
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graphicHeight are set, it will be ignored. Alternatively, if graphicWidth
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and graphicHeight are omitted, pointRadius will be used to set the size
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of the image, which will then be twice the value of pointRadius with the
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original aspect ratio.</p>
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</div>
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</body>
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</html>
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