Added a simple way to get X and Y world dimensions

src/de/tud/kom/p2psim/impl/topology/movement/modularosm/GPSCalculation.java

@@ -78,7 +78,17 @@ public class GPSCalculation {
 	public static int getZoom() {
 		return zoom;
 	}
-
+	
+	public static double getWorldDimensionsX() {
+		return Binder.getComponentOrNull(Topology.class)
+				.getWorldDimensions().getX();
+	}
+	
+	public static double getWorldDimensionsY() {
+		return Binder.getComponentOrNull(Topology.class)
+				.getWorldDimensions().getY();
+	}
+	
 	public static double getLatUpper() {
 		return latCenter + (Binder.getComponentOrNull(Topology.class)
 				.getWorldDimensions().getY() / 111111d) * scaleFactor;