Hi, I have a problem adding WMS Layer (from GeoServer) and creating points with OpenLayers. When I change the zoom level, the point that was on a road (layer WMS from GeoServer) appears elsewhere and not on the road.
I think it is a distortion problem in the map window, it presents different projection behaviors for diffent zoom levels. http://img19.imageshack.us/img19/3610/figura01.png http://img19.imageshack.us/img19/4426/figura02.png My configuration: - PostGIS: my table : SRID: 4326 ...CONSTRAINT enforce_srid_the_geom CHECK (srid(the_geom) = 4326) - GeoServer: my layer: SRS: 4326 ...SRS handling: Force declared SRS (native will be ignored) - OpenLayers: srs: 'EPSG:4326' layer = new OpenLayers.Layer.WMS( "topp:ruas_rs - Tiled", "http://localhost:8080/geoserver/wms";, { layers: 'topp:ruas_rs', styles: '', height: '550', width: '350', srs: 'EPSG:4326', format: format, tiled: 'true', tilesOrigin : "-51.31199340820311,-30.310599613189684" }, {buffer: 0} ); ---------------- var SinglePoint = OpenLayers.Class.create(); SinglePoint.prototype = OpenLayers.Class.inherit(OpenLayers.Handler.Point, { createFeature: function(evt) { this.control.layer.removeFeatures(this.control.layer.features); OpenLayers.Handler.Point.prototype.createFeature.apply(this, arguments); } }); var start_style = OpenLayers.Util.extend({}, OpenLayers.Feature.Vector.style['default']); start_style.externalGraphic = "images/start.png"; start_style.graphicWidth = 18; start_style.graphicHeight = 26; start_style.graphicYOffset = -26; start_style.graphicOpacity = 1; var stop_style = OpenLayers.Util.extend({}, OpenLayers.Feature.Vector.style['default']); stop_style.externalGraphic = "images/stop.png"; stop_style.graphicWidth = 18; stop_style.graphicHeight = 26; stop_style.graphicYOffset = -26; stop_style.graphicOpacity = 1; var result_style = OpenLayers.Util.extend({}, OpenLayers.Feature.Vector.style['default']); result_style.strokeWidth = 3; result_style.strokeColor = "#ff0000"; result_style.fillOpacity = 0; start = new OpenLayers.Layer.Vector("Start point", {style: start_style}); stop = new OpenLayers.Layer.Vector("End point", {style: stop_style}); result = new OpenLayers.Layer.Vector("Routing results", {style: result_style}); map.addLayers([layer, start, stop, result]); // controls controls = { start: new OpenLayers.Control.DrawFeature(start, SinglePoint), stop: new OpenLayers.Control.DrawFeature(stop, SinglePoint) } for (var key in controls) { map.addControl(controls[key]); } function compute() { var startPoint = start.features[0]; var stopPoint = stop.features[0]; if (startPoint && stopPoint) { var result = { startpoint: startPoint.geometry.x + ' ' + startPoint.geometry.y, finalpoint: stopPoint.geometry.x + ' ' + stopPoint.geometry.y, method: OpenLayers.Util.getElement('method').value, region: "teste", srid: "4326" }; var request = OpenLayers.Request.GET({ url: "http://localhost:8080/application-test/RoutingServlet";, params: result, headers: {"Content-Type": "text/plain"}, callback: displayRoute }); } } function displayRoute(response) { if (response && response.responseXML) { // erase the previous results result.removeFeatures(result.features); var edges = response.responseXML.getElementsByTagName('edge'); var features = []; for (var i = 0; i < edges.length; i++) { var wkt = (edges[i].getElementsByTagName('wkt')[0].text); var geometry = parser.read(wkt); result.addFeatures(geometry); } } } Sorry, but my English is not so good. Thanks. Lucas Eskopinski. -- View this message in context: http://n2.nabble.com/Add-layers-drawing-points-tp2653881p2653881.html Sent from the OpenLayers Users mailing list archive at Nabble.com. _______________________________________________ Users mailing list [email protected] http://openlayers.org/mailman/listinfo/users
