@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
}
@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
}