gwt-openlayers - 顯示路線

Question

我使用gwt-openlayers。
我還沒有找到如何顯示路線。

是否可以使用gwt-openlayers顯示路線？

Answer 1

我設法顯示路線：

KML：將KML座標爲字符串 6.646280,49.753730,0.000000 6.646020,49.753230,0.000000 6.645650,49.752700,0.000000 ... 在這種情況下。

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

取決於您的路徑格式，但如果您有KML，請使用GML層。