Examples with Base ol.layer.Base used on opensource projects

Example 6 with Base

use of ol.layer.Base in project gwt-ol3 by TDesjardins.

the class AnimationExample 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 an 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();
    view.setCenter(transformedMidPoint);
    view.setZoom(16);
    // create the map
    MapOptions mapOptions = new MapOptions();
    mapOptions.setLoadTilesWhileAnimating(true);
    mapOptions.setTarget(exampleId);
    mapOptions.setView(view);
    Collection<Base> lstLayer = new Collection<Base>();
    lstLayer.push(osmLayer);
    mapOptions.setLayers(lstLayer);
    Map map = new Map(mapOptions);
    // add some controls
    map.addControl(new ScaleLine());
    MousePositionOptions mousePositionOptions = new MousePositionOptions();
    ProjectionOptions projectionOptions = new ProjectionOptions();
    projectionOptions.setCode(DemoConstants.EPSG_4326);
    mousePositionOptions.setProjection(new Projection(projectionOptions));
    MousePosition mousePosition = new MousePosition(mousePositionOptions);
    mousePosition.setCoordinateFormat(Coordinate.createStringXY(5));
    map.addControl(mousePosition);
    Coordinate tvTowerCoordinate = Projection.transform(new Coordinate(13.409, 52.52), DemoConstants.EPSG_4326, DemoConstants.EPSG_3857);
    Coordinate pplaceCoordinate = Projection.transform(new Coordinate(13.377, 52.509), DemoConstants.EPSG_4326, DemoConstants.EPSG_3857);
    Coordinate zooCoordinate = Projection.transform(new Coordinate(13.338, 52.508), DemoConstants.EPSG_4326, DemoConstants.EPSG_3857);
    final List<Coordinate> coordinates = Arrays.asList(transformedMidPoint, tvTowerCoordinate, pplaceCoordinate, zooCoordinate);
    Scheduler.get().scheduleFixedPeriod(() -> {
        int index = getNextIndex(coordinates.size());
        AnimationOptions panAnimationOptions = new AnimationOptions();
        panAnimationOptions.setDuration(2000);
        // Switch this to rotate the animation while animating.
        // panAnimationOptions.setRotation(view.getRotation() + 2 * Math.PI);
        panAnimationOptions.setCenter(coordinates.get(index));
        view.animate(panAnimationOptions);
        AnimationOptions zoomOutAnimationOptions = new AnimationOptions();
        zoomOutAnimationOptions.setDuration(1000);
        zoomOutAnimationOptions.setResolution(view.getResolution() + 4);
        AnimationOptions zoomInAnimationOptions = new AnimationOptions();
        zoomInAnimationOptions.setDuration(1000);
        zoomInAnimationOptions.setResolution(view.getResolution());
        view.animate(zoomOutAnimationOptions, zoomInAnimationOptions);
        return true;
    }, 6000);
}

Example 7 with Base

use of ol.layer.Base in project gwt-ol3 by TDesjardins.

the class OLUtil method getZoomLevel.

/**
 * Gets the current zoomlevel of the given {@link Map}.
 * @param map
 *            {@link Map}
 * @return zoomlevel on success, else {@link Double#NaN}
 */
public static double getZoomLevel(Map map) {
    View v = map.getView();
    // try to get zoom
    double z = getZoom(v);
    if (!Double.isNaN(z)) {
        return z;
    }
    // zoom is undefined, so check resolution
    double zoomResolution = v.getResolution();
    // walk layers to find resolution
    CollectionWrapper<Base> layers = new CollectionWrapper<Base>(map.getLayers());
    for (Base l : layers) {
        // get source if layer instance has it
        Source source = l.get("source");
        if (source != null) {
            // try to get a tilegrid from the source
            TileGrid tg = getTileGrid(source);
            if (tg != null) {
                // check resolutions
                double[] resolutions = tg.getResolutions();
                if (resolutions != null) {
                    double dPreviousResolution = 0;
                    for (int i = 0; i < resolutions.length; i++) {
                        // resolutions are sorted in descending order, so
                        // compare with actual one
                        double resolution = resolutions[i];
                        if (resolution <= zoomResolution) {
                            if (i > 1) {
                                // calculate the delta of the resolution
                                // compared to the current and the previous
                                // zoomlevel
                                double delta = (resolution - zoomResolution) / (dPreviousResolution - resolution);
                                // adjust the integer zoomlevel to the delta
                                return i + delta;
                            } else {
                                return 0;
                            }
                        }
                        dPreviousResolution = resolution;
                    }
                }
            }
        }
    }
    return Double.NaN;
}

Example 8 with Base

use of ol.layer.Base in project gwt-ol3 by TDesjardins.

the class StaticImageExample method show.

/* (non-Javadoc)
     * @see de.desjardins.ol3.demo.client.example.Example#show()
     */
@Override
public void show(String exampleId) {
    ProjectionOptions projectionOptions = OLFactory.createOptions();
    Extent imageExtent = new Extent(0, 0, 1024, 968);
    projectionOptions.setCode("pixel");
    projectionOptions.setExtent(imageExtent);
    projectionOptions.setUnits("pixels");
    Projection projection = new Projection(projectionOptions);
    ImageStaticOptions imageStaticOptions = OLFactory.createOptions();
    imageStaticOptions.setUrl("http://imgs.xkcd.com/comics/online_communities.png");
    imageStaticOptions.setImageSize(new Size(1024, 968));
    imageStaticOptions.setImageExtent(imageExtent);
    imageStaticOptions.setProjection(projection);
    // create attribution
    imageStaticOptions.setAttributions("&copy; <a href=\"http://xkcd.com/license.html\">xkcd</a>");
    ImageStatic imageStatic = new ImageStatic(imageStaticOptions);
    LayerOptions layerOptions = OLFactory.createOptions();
    layerOptions.setSource(imageStatic);
    Image image = new Image(layerOptions);
    Collection<Base> layers = new Collection<Base>();
    layers.push(image);
    ViewOptions viewOptions = OLFactory.createOptions();
    viewOptions.setCenter(new Coordinate(500, 500));
    viewOptions.setProjection(projection);
    viewOptions.setZoom(2);
    View view = new View(viewOptions);
    MapOptions mapOptions = OLFactory.createOptions();
    mapOptions.setTarget(exampleId);
    mapOptions.setView(view);
    mapOptions.setLayers(layers);
    Map map = new Map(mapOptions);
    // add some controls
    DemoUtils.addDefaultControls(map.getControls());
    ol.control.Attribution attributionControl = new ol.control.Attribution();
    attributionControl.setCollapsed(false);
    map.addControl(attributionControl);
}

Example 9 with Base

use of ol.layer.Base in project gwt-ol3 by TDesjardins.

the class ClusterExample method show.

/* (non-Javadoc)
     * @see de.desjardins.ol3.demo.client.example.Example#show() */
@Override
public void show(String exampleId) {
    Collection<Feature> features = new Collection<Feature>();
    int e = 450000;
    for (int i = 0; i < 20000; ++i) {
        // create a point
        Coordinate coordinate = new Coordinate(2 * e * Math.random() - e, 2 * e * Math.random() - e);
        Point point = new Point(coordinate);
        // create feature
        FeatureOptions featureOptions = new FeatureOptions();
        featureOptions.setGeometry(point);
        Feature feature = new Feature(featureOptions);
        features.push(feature);
    }
    // create source
    VectorOptions vectorSourceOptions = new VectorOptions();
    vectorSourceOptions.setFeatures(features);
    Vector vectorSource = new Vector(vectorSourceOptions);
    // create clustering
    ClusterOptions clusterOptions = new ClusterOptions();
    clusterOptions.setDistance(40);
    clusterOptions.setSource(vectorSource);
    Cluster clusterSource = new Cluster(clusterOptions);
    // create vector layer
    VectorLayerOptions vectorLayerOptions = new VectorLayerOptions();
    vectorLayerOptions.setSource(clusterSource);
    vectorLayerOptions.setStyle(new GenericFunction<Feature, Style[]>() {

        @Override
        public Style[] call(Feature cluster) {
            // create style
            List<Style> style = new ArrayList<>();
            Feature[] features = (Feature[]) cluster.get("features");
            int clusterSize = features.length;
            StyleOptions styleOptions = new StyleOptions();
            TextOptions textOptions = new TextOptions();
            textOptions.setText(String.valueOf(clusterSize));
            styleOptions.setText(new Text(textOptions));
            CircleOptions circleOptions = new CircleOptions();
            circleOptions.setRadius(10);
            Color color = Color.getColorFromString("#3399CC");
            circleOptions.setFill(OLFactory.createFill(color));
            styleOptions.setImage(new Circle(circleOptions));
            style.add(new Style(styleOptions));
            return style.toArray(new Style[0]);
        }
    });
    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());
}