Examples with Feature ol.Feature used on opensource projects

Example 1 with Feature

use of ol.Feature in project gwt-ol3 by TDesjardins.

the class GeoJsonExample method show.

/* (non-Javadoc)
     * @see de.desjardins.ol3.demo.client.example.Example#show() */
@Override
public void show(String exampleId) {
    // create linestring
    Coordinate coordinate1 = new Coordinate(4e6, 2e6);
    Coordinate coordinate2 = new Coordinate(8e6, -2e6);
    Coordinate[] coordinates = { coordinate1, coordinate2 };
    LineString lineString = new LineString(coordinates);
    // create feature
    FeatureOptions featureOptions = new FeatureOptions();
    featureOptions.setGeometry(lineString);
    Feature feature = new Feature(featureOptions);
    // convert feature to GeoJSON
    GeoJson geoJsonFormat = new GeoJson();
    java.lang.Object geoJson = geoJsonFormat.writeFeatureObject(feature, null);
    // convert features from GeoJSON
    Feature featureGeoJson = geoJsonFormat.readFeature(geoJson, null);
    // show converted features
    Collection<Feature> lstFeatures = new Collection<Feature>();
    lstFeatures.push(featureGeoJson);
    VectorOptions vectorSourceOptions = new VectorOptions();
    vectorSourceOptions.setFeatures(lstFeatures);
    Vector vectorSource = new Vector(vectorSourceOptions);
    VectorLayerOptions vectorLayerOptions = new VectorLayerOptions();
    vectorLayerOptions.setSource(vectorSource);
    ol.layer.Vector vectorLayer = new ol.layer.Vector(vectorLayerOptions);
    // create a OSM-layer
    XyzOptions osmSourceOptions = new XyzOptions();
    Osm osmSource = new Osm(osmSourceOptions);
    LayerOptions osmLayerOptions = new LayerOptions();
    osmLayerOptions.setSource(osmSource);
    Tile osmLayer = new Tile(osmLayerOptions);
    // create a view
    View view = new View();
    Coordinate centerCoordinate = new Coordinate(0, 0);
    view.setCenter(centerCoordinate);
    view.setZoom(2);
    // create the map
    MapOptions mapOptions = new MapOptions();
    mapOptions.setTarget(exampleId);
    mapOptions.setView(view);
    Collection<Base> lstLayer = new Collection<Base>();
    lstLayer.push(osmLayer);
    lstLayer.push(vectorLayer);
    mapOptions.setLayers(lstLayer);
    Map map = new Map(mapOptions);
    // add some controls
    map.addControl(new ScaleLine());
    DemoUtils.addDefaultControls(map.getControls());
    // add some interactions
    map.addInteraction(new KeyboardPan());
    map.addInteraction(new KeyboardZoom());
    map.addControl(new Rotate());
}

Example 2 with Feature

use of ol.Feature in project gwt-ol3 by TDesjardins.

the class MarkerExample method show.

/* (non-Javadoc)
     * @see de.desjardins.ol3.demo.client.example.Example#show() */
@Override
public void show(String exampleId) {
    // create a point
    Coordinate coordinate1 = OLFactory.createCoordinate(4e6, 2e6);
    Point point1 = new Point(coordinate1);
    // create feature
    FeatureOptions featureOptions = OLFactory.createOptions();
    featureOptions.setGeometry(point1);
    Feature feature = new Feature(featureOptions);
    Collection<Feature> features = new Collection<Feature>();
    features.push(feature);
    // create source
    VectorOptions vectorSourceOptions = OLFactory.createOptions();
    vectorSourceOptions.setFeatures(features);
    Vector vectorSource = new Vector(vectorSourceOptions);
    // create style
    StyleOptions styleOptions = new StyleOptions();
    IconOptions iconOptions = new IconOptions();
    iconOptions.setSrc("https://openlayers.org/en/v3.20.1/examples/data/icon.png");
    Icon icon = new Icon(iconOptions);
    styleOptions.setImage(icon);
    Style style = new Style(styleOptions);
    VectorLayerOptions vectorLayerOptions = OLFactory.createOptions();
    vectorLayerOptions.setSource(vectorSource);
    vectorLayerOptions.setStyle(style);
    ol.layer.Vector vectorLayer = new ol.layer.Vector(vectorLayerOptions);
    // create a OSM-layer
    XyzOptions osmSourceOptions = OLFactory.createOptions();
    Osm osmSource = new Osm(osmSourceOptions);
    LayerOptions osmLayerOptions = OLFactory.createOptions();
    osmLayerOptions.setSource(osmSource);
    Tile osmLayer = new Tile(osmLayerOptions);
    // create a view
    View view = new View();
    Coordinate centerCoordinate = OLFactory.createCoordinate(0, 0);
    view.setCenter(centerCoordinate);
    view.setZoom(2);
    // create the map
    MapOptions mapOptions = new MapOptions();
    mapOptions.setTarget(exampleId);
    mapOptions.setView(view);
    Collection<Base> lstLayer = new Collection<Base>();
    lstLayer.push(osmLayer);
    lstLayer.push(vectorLayer);
    mapOptions.setLayers(lstLayer);
    Map map = new Map(mapOptions);
    // add some controls
    map.addControl(new ScaleLine());
    DemoUtils.addDefaultControls(map.getControls());
    // add some interactions
    map.addInteraction(new KeyboardPan());
    map.addInteraction(new KeyboardZoom());
    map.addControl(new Rotate());
}

Example 3 with Feature

use of ol.Feature in project gwt-ol3 by TDesjardins.

the class SelectFeaturesExample method show.

/* (non-Javadoc)
     * @see de.desjardins.ol3.demo.client.example.Example#show() */
@Override
public void show(String exampleId) {
    Coordinate centerCoordinate = new Coordinate(13.37, 52.52);
    Coordinate transformedMidPoint = Projection.transform(centerCoordinate, DemoConstants.EPSG_4326, DemoConstants.EPSG_3857);
    // create a polygon
    Polygon polygon = DemoUtils.createTestPolygon();
    // create a feature
    FeatureOptions featureOptions = OLFactory.createOptions();
    // TODO Setter for ID seems to doesn't have an effect in feature options.
    // featureOptions.setId("g1");
    featureOptions.setGeometry(polygon);
    Feature feature = new Feature(featureOptions);
    feature.setId("g1");
    feature.set("name", "triangle");
    // create another feature via cloning
    Feature feature2 = feature.clone();
    feature2.setId("g2");
    feature2.getGeometry().rotate(180, transformedMidPoint);
    Collection<Feature> lstFeatures = new Collection<Feature>();
    lstFeatures.push(feature);
    lstFeatures.push(feature2);
    VectorOptions vectorSourceOptions = OLFactory.createOptions();
    vectorSourceOptions.setFeatures(lstFeatures);
    Vector vectorSource = new Vector(vectorSourceOptions);
    VectorLayerOptions vectorLayerOptions = OLFactory.createOptions();
    vectorLayerOptions.setSource(vectorSource);
    ol.layer.Vector vectorLayer = new ol.layer.Vector(vectorLayerOptions);
    // create an OSM-layer
    XyzOptions osmSourceOptions = OLFactory.createOptions();
    Osm osmSource = new Osm(osmSourceOptions);
    LayerOptions osmLayerOptions = OLFactory.createOptions();
    osmLayerOptions.setSource(osmSource);
    Tile osmLayer = new Tile(osmLayerOptions);
    // create a view
    View view = new View();
    view.setCenter(transformedMidPoint);
    view.setZoom(14);
    // create the map
    MapOptions mapOptions = OLFactory.createOptions();
    mapOptions.setTarget(exampleId);
    mapOptions.setView(view);
    Collection<Base> lstLayer = new Collection<Base>();
    lstLayer.push(osmLayer);
    lstLayer.push(vectorLayer);
    mapOptions.setLayers(lstLayer);
    Map map = new Map(mapOptions);
    // add some controls
    map.addControl(new ScaleLine());
    MousePositionOptions mousePositionOptions = OLFactory.createOptions();
    ProjectionOptions projectionOptions = OLFactory.createOptions();
    projectionOptions.setCode(DemoConstants.EPSG_4326);
    mousePositionOptions.setProjection(new Projection(projectionOptions));
    MousePosition mousePosition = new MousePosition(mousePositionOptions);
    mousePosition.setCoordinateFormat(Coordinate.createStringXY(5));
    map.addControl(mousePosition);
    SelectOptions selectOptions = new SelectOptions();
    selectOptions.setCondition(Condition.getClick());
    // create a select interaction
    final Select selectFeature = new Select(selectOptions);
    map.addInteraction(selectFeature);
    selectFeature.on("select", (event) -> {
        Collection<Feature> selectedFeatures = selectFeature.getFeatures();
        if (selectedFeatures.getLength() > 0) {
            Feature selectedFeature = selectedFeatures.item(0);
            String output = "You selected feature with id '" + selectedFeature.getId() + "'" + " and name '" + selectedFeature.get("name") + "'" + " and geometry name '" + selectedFeature.getGeometryName() + "'" + ".";
            Window.alert(output);
        }
    });
}

Example 4 with Feature

use of ol.Feature in project gwt-ol3 by TDesjardins.

the class GeoJsonTest method testReadFeatureFromGeoJson.

public void testReadFeatureFromGeoJson() {
    injectUrlAndTest(() -> {
        String geoJson = geoJsonFormat.writeFeature(createTestFeature(), null);
        assertNotNull(geoJson);
        Feature feature = geoJsonFormat.readFeature(geoJson, null);
        assertNotNull(feature);
    });
}

Example 5 with Feature

use of ol.Feature in project gwt-ol3 by TDesjardins.

the class GeoJsonTest method createTestFeature.

private Feature createTestFeature() {
    Coordinate coordinate1 = new Coordinate(1, 1);
    Coordinate coordinate2 = new Coordinate(5, 5);
    Coordinate[] coordinates = { coordinate1, coordinate2 };
    LineString lineString = new LineString(coordinates);
    // Create feature
    FeatureOptions featureOptions = new FeatureOptions();
    featureOptions.setGeometry(lineString);
    return new Feature(featureOptions);
}