コード例 #1
0
  @Override
  public void buildPanel() {

    OpenLayers.setProxyHost("olproxy?targetURL=");

    // create some MapOptions
    MapOptions defaultMapOptions = new MapOptions();
    defaultMapOptions.setNumZoomLevels(16);

    // Create a MapWidget
    MapWidget mapWidget = new MapWidget("500px", "500px", defaultMapOptions);
    // Create a WMS layer as base layer
    WMSParams wmsParams = new WMSParams();
    wmsParams.setFormat("image/png");
    wmsParams.setLayers("basic");
    wmsParams.setStyles("");

    WMSOptions wmsLayerParams = new WMSOptions();
    wmsLayerParams.setUntiled();
    wmsLayerParams.setTransitionEffect(TransitionEffect.RESIZE);

    String wmsUrl = "http://vmap0.tiles.osgeo.org/wms/vmap0";

    WMS wmsLayer = new WMS("Basic WMS", wmsUrl, wmsParams, wmsLayerParams);

    Map map = mapWidget.getMap();

    // Add some control to the map
    LayerSwitcher layerSwitcher = new LayerSwitcher();
    map.addControl(layerSwitcher); // Display the LayerSwitcher
    map.addControl(new ScaleLine()); // Display the scaleline

    // Add the WMS to the map
    map.addLayer(wmsLayer);

    // Add some vectors
    final Point point = new Point(-110, 45);

    final Vector vectorLayer = new Vector("Features to Transform");

    // Style for the vector
    final Style featureStyle = new Style();
    featureStyle.setFillColor("#eeeeff");
    featureStyle.setStrokeColor("#3300ff");
    featureStyle.setStrokeWidth(2);
    featureStyle.setPointRadius(3);

    // Style for the rotation Handle
    final Style rotationHandlerStyle = new Style();
    rotationHandlerStyle.setFillColor("#eeeeee");
    rotationHandlerStyle.setFillOpacity(1);
    rotationHandlerStyle.setPointRadius(12);

    // create a polygon feature from a linear ring of points
    Point[] pointList = new Point[6];
    for (int p = 0; p < 6; p++) {
      double a = p * (2 * Math.PI) / 7;
      double r = Math.random() + 1;
      Point newPoint =
          new Point(point.getX() + (r * Math.cos(a)), point.getY() + (r * Math.sin(a)));
      pointList[p] = newPoint;
    }
    LinearRing linearRing = new LinearRing(pointList);
    final Polygon polygon = new Polygon(new LinearRing[] {linearRing});

    final VectorFeature polygonFeature =
        new VectorFeature(polygon, featureStyle); // create a VectorFeature from the polygon

    vectorLayer.addFeature(polygonFeature);

    // Create Options For the Transform Control
    TransformFeatureOptions transformFeatureOptions = new TransformFeatureOptions();

    transformFeatureOptions.setRotate(true);
    transformFeatureOptions.setRotation(0);
    transformFeatureOptions.setRederIntent("transform");
    transformFeatureOptions.setRotationHandleSymbolizer(rotationHandlerStyle);

    // Create The Transform Control
    TransformFeature transformFeature = new TransformFeature(vectorLayer, transformFeatureOptions);

    map.setCenter(new LonLat(point.getX(), point.getY()), 7);
    map.addLayer(vectorLayer);
    // Add and activate the control
    map.addControl(transformFeature);
    transformFeature.activate();

    contentPanel.add(new HTML("<p>This example shows the transformation of a Feature.</p>"));

    contentPanel.add(mapWidget);

    initWidget(contentPanel);

    mapWidget
        .getElement()
        .getFirstChildElement()
        .getStyle()
        .setZIndex(0); // force the map to fall behind popups
  }
コード例 #2
0
  @Override
  public void buildPanel() {

    OpenLayers.setProxyHost("olproxy?targetURL=");

    // create some MapOptions
    MapOptions defaultMapOptions = new MapOptions();
    defaultMapOptions.setNumZoomLevels(16);

    // Create a MapWidget
    MapWidget mapWidget = new MapWidget("500px", "500px", defaultMapOptions);
    // Create a WMS layer as base layer
    WMSParams wmsParams = new WMSParams();
    wmsParams.setFormat("image/png");
    wmsParams.setLayers("basic");
    wmsParams.setStyles("");

    WMSOptions wmsLayerParams = new WMSOptions();
    wmsLayerParams.setUntiled();
    wmsLayerParams.setTransitionEffect(TransitionEffect.RESIZE);

    String wmsUrl = "http://vmap0.tiles.osgeo.org/wms/vmap0";

    WMS wmsLayer = new WMS("Basic WMS", wmsUrl, wmsParams, wmsLayerParams);

    // Add the WMS to the map
    Map map = mapWidget.getMap();
    map.addLayer(wmsLayer);

    // Add some vectors
    final Vector vectorLayer = new Vector("Simple Geometry");
    map.addLayer(vectorLayer);

    // create a point feature
    final Point point =
        new Point(-110, 45); // we need a Point object because this has the rotate method
    Style pointStyle = new Style();
    pointStyle.setFillColor("blue");
    pointStyle.setStrokeColor("blue");
    pointStyle.setStrokeWidth(3);
    pointStyle.setPointRadius(6);
    pointStyle.setFillOpacity(0.6);
    final VectorFeature pointFeature =
        new VectorFeature(point, pointStyle); // create a VectorFeature from the rotatable Polygon
    vectorLayer.addFeature(pointFeature);

    // create a line feature
    Point[] linePoints = {new Point(-120, 40), new Point(-115, 45), new Point(-110, 40)};
    final LineString lineString =
        new LineString(
            linePoints); // we need a LineString object because this has the rotate method
    final Style lineStyle = new Style();
    lineStyle.setStrokeColor("#339933");
    lineStyle.setStrokeWidth(3);
    lineStyle.setPointRadius(6);
    final VectorFeature lineFeature =
        new VectorFeature(
            lineString, lineStyle); // create a VectorFeature from the rotatable LineString
    vectorLayer.addFeature(lineFeature);

    // create a polygon feature from a linear ring of points
    Point[] pointList = new Point[6];
    for (int p = 0; p < 6; p++) {
      double a = p * (2 * Math.PI) / 7;
      double r = Math.random() + 1;
      Point newPoint =
          new Point(point.getX() + (r * Math.cos(a)), point.getY() + (r * Math.sin(a)));
      pointList[p] = newPoint;
    }
    LinearRing linearRing = new LinearRing(pointList);
    final Polygon polygon =
        new Polygon(
            new LinearRing[] {
              linearRing
            }); // we need a Polygon object because this has the rotate method
    final VectorFeature polygonFeature =
        new VectorFeature(polygon, lineStyle); // create a VectorFeature from the rotatable Polygon
    vectorLayer.addFeature(polygonFeature);

    // Lets add some default controls to the map
    map.addControl(
        new LayerSwitcher()); // + sign in the upperright corner to display the layer switcher
    map.addControl(new OverviewMap()); // + sign in the lowerright to display the overviewmap
    map.addControl(new ScaleLine()); // Display the scaleline

    // Center and zoom to a location
    map.setCenter(new LonLat(point.getX(), point.getY()), 5);

    // start the actual rotating
    final Point origin = new Point(-111.04, 45.68);

    final Timer t =
        new Timer() // we just use a GWT timer to have animation, no need for special OpenLayer
        // timer stuff...
        {
          @Override
          public void run() {
            polygon.rotate(-360 / 20, origin);
            vectorLayer.drawFeature(polygonFeature, lineStyle);

            lineString.rotate(360 / 40, origin);
            vectorLayer.drawFeature(lineFeature, lineStyle);

            point.rotate(360 / 20, origin);
            vectorLayer.drawFeature(pointFeature, lineStyle);
          }
        };
    t.scheduleRepeating(100);

    contentPanel.add(
        new HTML(
            "<p>This example shows a few features rotating. There is not yet a control built that provides a tool for rotating, but the geometry.rotate method can be accessed to rotate programmatically.</p>"));

    contentPanel.add(mapWidget);

    initWidget(contentPanel);

    mapWidget
        .getElement()
        .getFirstChildElement()
        .getStyle()
        .setZIndex(0); // force the map to fall behind popups
  }