Re: GWTOpenLayers - Move point doesn't work

I think that you forget to transform the destination LonLat in the click handler as you did in the center point and the feature point.

On Monday, March 30, 2015 at 11:53:05 AM UTC+2, Jostein wrote:

Hi

The code below creates a map and shows a point. The button below the map "Move point" should move the point a few hundred meters, but the point just disappears. What am I missing here?

public class Maptest implements EntryPoint {

private static final Projection DEFAULT_PROJECTION = new Projection(

"EPSG:4326");

VectorFeature pointFeature;

Vector markerLayer;

public void onModuleLoad() {

MapOptions defaultMapOptions = new MapOptions();

MapWidget mapWidget = new MapWidget("500px", "500px", defaultMapOptions);

OSM osmMapnik = OSM.Mapnik("Mapnik");

OSM osmCycle = OSM.CycleMap("CycleMap");

//mapWidget.getMap().addControl(new LayerSwitcher());

osmMapnik.setIsBaseLayer(true);

osmCycle.setIsBaseLayer(true);

mapWidget.getMap().addLayer(osmMapnik);

mapWidget.getMap().addLayer(osmCycle);

markerLayer = new Vector("Marker layer");

mapWidget.getMap().addLayer(markerLayer);

LonLat lonLat = new LonLat(10.44136762, 63.39698564);

lonLat.transform("EPSG:4326", mapWidget.getMap().getProjection()); //transform lonlat (provided in EPSG:4326) to OSM coordinate system (the map projection)

mapWidget.getMap().setCenter(lonLat, 12);

// Tegner et punkt

Style pointStyle = new Style();

pointStyle.setFillColor("red");

pointStyle.setStrokeColor("green");

pointStyle.setStrokeWidth(2);

pointStyle.setFillOpacity(0.9);

final Point point = new Point(10.44136762, 63.39698564);

point.transform(DEFAULT_PROJECTION, new Projection(mapWidget

.getMap().getProjection())); // transform point to OSM

// coordinate system

pointFeature = new VectorFeature(point, pointStyle);

markerLayer.addFeature(pointFeature);

//pointId = point.getId();

Button b = new Button("Move point");

b.addClickHandler(new ClickHandler() {

@Override

public void onClick(ClickEvent event) {

pointFeature.move(new LonLat(10.44215018, 63.35392463));

}

});

VerticalPanel v = new VerticalPanel();

v.add(mapWidget);

v.add(b);

RootLayoutPanel.get().add(v);

}

}

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