AW: [OpenLayers-Users] Openlayers circle Polygon on OpenStreetMaps layer

Thu Mar 15 19:02:04 EDT 2012

Hi,

Try to use a much larger radius for your regular polygon like 10000.

Arnd

-----Ursprüngliche Nachricht-----
Von: openlayers-users-bounces at lists.osgeo.org
[mailto:openlayers-users-bounces at lists.osgeo.org] Im Auftrag von Fabrizio
Buratta
Gesendet: Donnerstag, 15. März 2012 17:23
An: openlayers-users at lists.osgeo.org
Betreff: [OpenLayers-Users] Openlayers circle Polygon on OpenStreetMaps
layer

I'm trying to create a circle with a defined center and put an icon marker
on it. The code is working if I use images instead of
OpenLayers.Geometry.Polygon.createRegularPolygon. I wasn't able to solve it.

here you find my code:

<html>
<head>
<title>OpenLayers Example</title>
<script src="http://www.openlayers.org/api/OpenLayers.js"></script>
</head>
<body>

<div id="mapdiv"></div>
<script>

map = new OpenLayers.Map("mapdiv");
map.addLayer(new OpenLayers.Layer.OSM());

epsg4326 =  new OpenLayers.Projection("EPSG:4326"); //WGS 1984 projection
projectTo = map.getProjectionObject(); //The map projection (Spherical
Mercator)

var lonLat = new OpenLayers.LonLat( -0.1279688 ,51.5077286
).transform(epsg4326,     projectTo);

var zoom=6;
map.setCenter (lonLat, zoom);

var mycircle = OpenLayers.Geometry.Polygon.createRegularPolygon(
               new OpenLayers.Geometry.Point( lonLat ),
               1,
               30
           );

var featurecircle = new OpenLayers.Feature.Vector(mycircle);

var vectorLayer = new OpenLayers.Layer.Vector("Overlay");

// Define markers as "features" of the vector layer:
vectorLayer.addFeatures(featurecircle);

var feature = new OpenLayers.Feature.Vector( new OpenLayers.Geometry.Point(
-0.1244324, 51.5006728 ).transform(epsg4326, projectTo),
        {description:'info'} ,
        {externalGraphic: 'img/marker.png', graphicHeight: 25,
graphicWidth: 21,      graphicXOffset:-12, graphicYOffset:-25  }
    );
vectorLayer.addFeatures(feature);

map.addLayer(vectorLayer);

</script>
</body>
</html>

Thanks in advance for any tips.

--
Fab

http://twitter.com/extremoburo

http://www.linkedin.com/in/fburatta

http://www.nonfateviprenderedalpanico.it
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