Debianでka-MapのメモプラスOpenLayers とGeoExt: OpenLayers 17g 描画した図を変形

OpenLayers Modify Feature Example(modify-feature.html) 描画した図を変形
を参考に描画した図を変形します。

次のようにコードを追加します。
openlayers17fで追加したコードは削除してください。


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<script type="text/javascript">
---
 var vectors, controls; //追加
---

// ここから追加
 OpenLayers.Feature.Vector.style['default']['strokeWidth'] = '2';
 vectors = new OpenLayers.Layer.Vector("Vector Layer");

 map.addLayer(vectors); // 修正
// map.addControl(new OpenLayers.Control.LayerSwitcher());
// map.addControl(new OpenLayers.Control.MousePosition());

 var modifyOptions = {
  onModificationStart: function(feature) {
   OpenLayers.Console.log("start modifying", feature.id);
  },
  onModification: function(feature) {
   OpenLayers.Console.log("modified", feature.id);
  },
  onModificationEnd: function(feature) {
   OpenLayers.Console.log("end modifying", feature.id);
  },
  onDelete: function(feature) {
   OpenLayers.Console.log("delete", feature.id);
  }
 };
 controls = {
  point: new OpenLayers.Control.DrawFeature(vectors, OpenLayers.Handler.Point),
  line: new OpenLayers.Control.DrawFeature(vectors, OpenLayers.Handler.Path),
  polygon: new OpenLayers.Control.DrawFeature(vectors, OpenLayers.Handler.Polygon),
  regular: new OpenLayers.Control.DrawFeature(vectors, OpenLayers.Handler.RegularPolygon, {handlerOptions: {sides: 5}}),
  modify: new OpenLayers.Control.ModifyFeature(vectors, modifyOptions)
 };

 for(var key in controls) {
  map.addControl(controls[key]);
 }
            
//            map.setCenter(new OpenLayers.LonLat(0, 0), 3);
 document.getElementById('noneToggle').checked = true;

// ここまで   

} // function init() の最後

 function displayZoom() {
  document.getElementById("zoom").innerHTML = map.zoom.toFixed(4);
 }

// ここから追加
 function update() {
// reset modification mode
  controls.modify.mode = OpenLayers.Control.ModifyFeature.RESHAPE;
  var rotate = document.getElementById("rotate").checked;
  if(rotate) {
   controls.modify.mode |= OpenLayers.Control.ModifyFeature.ROTATE;
  }
  var resize = document.getElementById("resize").checked;
  if(resize) {
   controls.modify.mode |= OpenLayers.Control.ModifyFeature.RESIZE;
  }
  var drag = document.getElementById("drag").checked;
  if(drag) {
   controls.modify.mode |= OpenLayers.Control.ModifyFeature.DRAG;
  }
// disable reshape mode if at least one of modes rotate, resize, drag is enabled
  if (rotate || resize || drag) {
   controls.modify.mode &= ~OpenLayers.Control.ModifyFeature.RESHAPE;
  }
  var sides = parseInt(document.getElementById("sides").value);
  sides = Math.max(3, isNaN(sides) ? 0 : sides);
  controls.regular.handler.sides = sides;
  var irregular =  document.getElementById("irregular").checked;
  controls.regular.handler.irregular = irregular;
 }

 function toggleControl(element) {
  for(key in controls) {
   var control = controls[key];
   if(element.value == key && element.checked) {
    control.activate();
   } else {
    control.deactivate();
   }
  }
 }
// ここまで
 </script>
</head>
<body onload="init()">
 <h1 id="title">Drawing Vector Feature5</h1>
 <div id="layerswitcher" style="position:absolute; z-index:1;"></div>
 <div id="map"></div>
 <div id="paneldiv" class="olControlNavToolbar"></div>
 <div id="panel" style="margin-left:50px;"></div><br />
 <div id="coords" style="margin-left:50px;"></div>
 <div style="margin-left:50px;">Moving your mouse to the upper left corner of this map should return 'x=0,y=0'</div>
 <div style="margin-left:50px;">zoom: <span id="zoom"></span></div>
<!-- ここから追加 -->
 <div id="controls">
  <ul id="controlToggle">
   <li>
    <input type="radio" name="type" value="none" id="noneToggle"  onclick="toggleControl(this);" checked="checked" />
    <label for="noneToggle">navigate</label>
   </li>
   <li>
    <input type="radio" name="type" value="point" id="pointToggle" onclick="toggleControl(this);" />
    <label for="pointToggle">draw point</label>
   </li>
   <li>
    <input type="radio" name="type" value="line" id="lineToggle" onclick="toggleControl(this);" />
    <label for="lineToggle">draw line</label>
   </li>
   <li>
    <input type="radio" name="type" value="polygon" id="polygonToggle" onclick="toggleControl(this);" />
    <label for="polygonToggle">draw polygon</label>
   </li>
   <li>
    <input type="radio" name="type" value="regular" id="regularToggle" onclick="toggleControl(this);" />
    <label for="regularToggle">draw regular polygon</label>
    <label for="sides"> - sides</label>
    <input id="sides" type="text" size="2" maxlength="2"  name="sides" value="5" onchange="update()" />
     <ul>
      <li>
       <input id="irregular" type="checkbox" name="irregular" onchange="update()" />
       <label for="irregular">irregular</label>
      </li>
     </ul>
    </li>
    <li>
     <input type="radio" name="type" value="modify" id="modifyToggle" onclick="toggleControl(this);" />
     <label for="modifyToggle">modify feature</label>
      <ul>
       <li>
        <input id="rotate" type="checkbox" name="rotate" onchange="update()" />
        <label for="rotate">allow rotation</label>
       </li>
       <li>
        <input id="resize" type="checkbox" name="resize" onchange="update()" />
        <label for="resize">allow resizing</label>
       </li>
       <li>
        <input id="drag" type="checkbox" name="drag" onchange="update()" />
        <label for="drag">allow dragging</label>
       </li>
      </ul>
     </li>
    </ul>
   </div>
<!-- ここまで -->
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