gwt-openlayers - 显示路线

Question

我使用gwt-openlayers。
我还没有找到如何显示路线。

是否可以使用gwt-openlayers显示路线？

Answer 1

我设法显示路线：

KML：将KML坐标为字符串 6.646280,49.753730,0.000000 6.646020,49.753230,0.000000 6.645650,49.752700,0.000000 ... 在这种情况下。

Vector routeLayer = new Vector("route"); 

List<Point> pointList = new ArrayList<Point>(); 
Projection defaultProj = new Projection(DEFAULT_PROJECTION); 
    // DEFAULT_PROJECTION = "EPSG:4326" 
Projection mapProj = new Projection(mapWidget.getMap().getProjection()); 
for (String coord : KML.split(" ")) 
{ 
    String[] xyz = coord.split(","); 
    if (xyz.length == 3) 
    { 
    Point point = new Point(Double.parseDouble(xyz[0]), Double.parseDouble(xyz[1])); 
     // lon,lat 
    point.transform(defaultProj, mapProj); 
    pointList.add(point); 
    } 
} 
LineString geometry = new LineString(pointList.toArray(new Point[pointList.size()])); 
Style style = new Style(); 
style.setStrokeColor("#0033ff"); 
style.setStrokeWidth(5); 

routeLayer.addFeature(new VectorFeature(geometry, style)); 

mapWidget.getMap().addLayer(routeLayer); 

Answer 2

取决于您的路径格式，但如果您有KML，请使用GML层。