hi,<div><br></div><div>since there isn&#39;t a buffer function integrated in openlayers i have to find other ways to simulate buffering a point and displaying it:</div><div><br></div><div><br></div><div><div> function pointBuffer(lat, lon, radius,color){</div>
<div>           polygonLayer.removeFeatures(polygonLayer.features);</div><div>                var style = {</div><div>                    fillColor: &#39;#ff0000&#39;,</div><div>                    strokeWidth: 1,</div><div>
                    pointRadius: radius,  // in pixels</div><div>                  </div><div>                };</div><div><br></div><div><br></div><div><br></div><div>                var point = new OpenLayers.Geometry.Point(lat, lon);</div>
<div>                var feature = new OpenLayers.Feature.Vector(point,null, style);</div><div>                </div><div>                polygonLayer.addFeatures([feature]);</div><div>                polygonLayer.setOpacity(0.5);</div>
<div><br></div><div><br></div><div>            }</div><div><br></div><div><br></div><div>---------------------------------------------------------------------------------------------------------------</div><div><br></div>
<div>...</div><div><div>                                 var lonlat1=new OpenLayers.LonLat(parseInt(radius),0);</div><div>                                 var lonlat2=new OpenLayers.LonLat(parseInt(radius*2),0);</div><div>
                                 var pixel1=map.getLayerPxFromLonLat(lonlat1);</div><div>                                 var pixel2=map.getLayerPxFromLonLat(lonlat2);</div><div>                                 </div><div>
                                 </div><div>                                 var dist= Math.abs(parseInt(pixel2.x)-parseInt(pixel1.x));</div><div>                                 </div><div>                              </div>
<div>                                 createCircle(x,y,dist);</div><div><br></div><div><br></div><div>--------------------------------------------------------------------------------------------------------------</div><div>
<br></div><div>It works fine, but now the problem:</div><div>When zooming in or out the point feature won&#39;t resize -that means it does not changes. the pixel size/radius is the same in every zoom level.</div><div><br>
</div><div>for solving this, i thought of creating a linearring and then a polygon, of which i know that will automatically resize with zooming.</div><div><br></div><div>i tried:                    </div><div>var linearRing = new OpenLayers.Geometry.LinearRing(point); //just one point</div>
<div>var polygonFeature = new OpenLayers.Feature.Vector(</div><div> new OpenLayers.Geometry.Polygon([linearRing]),null, style);</div><div><br></div><div>but seems not to work..</div><div><br></div><div><br></div><div><br>
</div><div>anybody can help?</div><div><br></div><div><br></div><div>regards</div><div>m.sirin</div></div></div>