2012-01-05 14 views
0

問題: OpenLayers.Geometry.LineStringでベクトルレイヤーに線を描きます。 Openlayer SelectFeatureを使用して、この行を選択します。しかし、これは可能なスタートポイントとエンドポイントでのみ可能です。これはオープンソースのバグですか?Openlayers - LineStringを含むSelectFeatureが機能しない

これは私の例です:青色の太い線が機能しないのをクリックします。

<html> 
    <head> 
     <title>OpenLayers Example</title> 
     <script src="http://www.openlayers.org/api/OpenLayers.js"></script> 
     <script type="text/javascript"src="http://www.openstreetmap.org/openlayers/OpenStreetMap.js"></script> 
    </head> 

    <body> 
     <div style="width:100%; height:100%" id="map"></div> 
     <script defer="defer" type="text/javascript"> 

     //create map 
     var options = { 
      projection: new OpenLayers.Projection("EPSG:900913"), 
      displayProjection: 'EPSG:4326', 
      units: "m", 
      maxResolution: 156543.0339, 
      maxExtent: new OpenLayers.Bounds(-20037508.34, -20037508.34, 20037508.34, 20037508.34), 
      controls: [ 
       new OpenLayers.Control.PanZoom(), 
       new OpenLayers.Control.Navigation(), 
       new OpenLayers.Control.MousePosition({"numDigits": 8, 
        displayProjection: new OpenLayers.Projection("EPSG:4326"), 
        emptyString:"outside the map" 
       }), 
      ] 
     };   

     map = new OpenLayers.Map('map', options); 

     // create OSM layer 
     osm_osma = new OpenLayers.Layer.OSM.Osmarender('OpenStreetMap Osmarender', { 
      minZoomLevel: 0, 
      maxZoomLevel: 100, 
      isBaseLayer: true 
     }); 

     map.addLayers([osm_osma]);  
     var lonlat=transformLonLat("8.3191929972096", "49.015806343698", false); 
     map.setCenter(lonlat, 17); 

     //create vector-layer 
     // Layerstyle 
     var vlayer_style = OpenLayers.Util.extend({}, OpenLayers.Feature.Vector.style['default']); 
     vlayer_style.fillOpacity = 0.6; 
     vlayer_style.fillColor = "green"; 
     vlayer_style.strokeWidth = 6; 
     vlayer_style.strokeColor = "blue"; 
     vlayer_style.strokeOpacity = 1; 

     var select_style = OpenLayers.Util.extend({}, vlayer_style); 
     select_style.fillOpacity = 0.6; 
     select_style.strokeWidth = 10; 
     select_style.strokeColor = "black"; 
     select_style.fillColor = "black"; 
     vlayer_style.strokeOpacity = 1; 

     var vStyleMap = new OpenLayers.StyleMap({ 
      "default" :vlayer_style, 
      "select" :select_style 
     }); 

     var vlayer = new OpenLayers.Layer.Vector("vlayer", {styleMap: vStyleMap}); 
     map.addLayer(vlayer); 

     //create SelectFeatures 
     var selectControl=new OpenLayers.Control.SelectFeature(vlayer, 
     { 
      displayClass: "selectButton", 
      title: 'Select Ways', 
      onSelect:selected, 
      onUnselect:unselected, 
      toggle:false, 
      clickout:true, 
      multiple:false, 
      hover:false, 
      toggleKey:"ctrlKey", 
      multipleKey:"shiftKey", 
      geometryTypes: ["OpenLayers.Geometry.LineString"], 
      callbacks: { 
       'over': feature_hover, 
       'out': feature_hover_out 
      } 
     }); 

     map.addControl(selectControl); 
     selectControl.activate(); 

     //Draw Linestring 
     var waypoint_lon="8.3096336042805"; 
     var waypoint_lat="49.016608500028"; 
     var lonlat=transformLonLat(waypoint_lon, waypoint_lat, false);   
     var point=new OpenLayers.Geometry.Point(lonlat.lon, lonlat.lat); 
     var arrPoint =[]; 
     arrPoint.push(point); 

     waypoint_lon="8.3274863874837"; 
     waypoint_lat="49.016249642214"; 
     lonlat=transformLonLat(waypoint_lon, waypoint_lat, false);   
     point=new OpenLayers.Geometry.Point(lonlat.lon, lonlat.lat); 
     arrPoint.push(point); 

     var line = new OpenLayers.Geometry.LineString(arrPoint);  
     var lineF = new OpenLayers.Feature.Vector(line,null); 

     vlayer.addFeatures([lineF]); 

     //Functions 
     function transformLonLat(lon, lat, anzeige) { 
      var lonlat1 = null; 
      if (anzeige==true) 
       lonlat1=new OpenLayers.LonLat(lon, lat).transform(
        new OpenLayers.Projection("EPSG:900913"), // Spherical Mercator Projection 
        new OpenLayers.Projection("EPSG:4326") // WGS 1984, 
       ); 
      else 
      lonlat1=new OpenLayers.LonLat(lon, lat).transform(
       new OpenLayers.Projection("EPSG:4326"), // WGS 1984, 
       new OpenLayers.Projection("EPSG:900913") // Spherical Mercator Projection 
      ); 
      return lonlat1; 
     } 

     function feature_hover(feature){ 
      feature.layer.div.style.cursor = "crosshair"; 
     } 

     function feature_hover_out(feature){ 
      feature.layer.div.style.cursor = ""; 
     } 

     function selected (obj) { 
      alert("select"); 
     } 

     function unselected (obj) { 
      alert("deselect"); 
     } 
     </script> 
    </body> 
</html> 

答えて

0

実際には動作しているかもしれませんが、真ん中のラインをクリックするのは本当に難しいです(エンドポイントをクリックする方が簡単です)。

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