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## com.bbn.openmap.tools.roads
Interface RoadServices

All Known Implementing Classes:
  MultiRoadLayer, RoadFinder, VPFRoadLayer

public interface RoadServices

getPathOnRoad interface - any layer that implements this interface can return a route between two points

Method Summary
`java.util.List` | `displayPathOnRoad(java.awt.Point start, java.awt.Point end, Route route, java.util.List segments)` Displays a Route between two points on the map.
`Route` | `getPathOnRoad(LatLonPoint start, LatLonPoint end)` Returns the best Route between a start point and end point.
`java.util.List` | `getPathOnRoad(java.awt.Point start, java.awt.Point end, java.util.List segments)` Returns the best Route between a start point and end point.

Method Detail

### getPathOnRoad

    public java.util.List getPathOnRoad(java.awt.Point start,
                                        java.awt.Point end,
                                        java.util.List segments)

  Returns the best Route between a start point and end point.

  This method works by finding the closest intersection to start and end points, and then finding a path from start intersection to end intersection. The method works on screen coordinates.

  Parameters:
    `start` - - Start point on the map in screen coordinates.
    `end` - - End point on the map in screen coordinates.
    `segments` - is populated by road segments, each segment is a list of points in screen coordinates.
  Returns:
    a list of points between start and end points in screen coordinates.

### getPathOnRoad

    public Route getPathOnRoad(LatLonPoint start,
                               LatLonPoint end)

  Returns the best Route between a start point and end point.

  This method works by finding the closest intersection to start and end points, and then finding a path from start intersection to end intersection. The method works in latitude/longitude coordinates.

  Parameters:
    `start` - - Start point in latitude/longitude coordinates.
    `end` - - End point in latitude/longitude coordinates.
  Returns:
    the best route to travel by Road from start to end

### displayPathOnRoad

    public java.util.List displayPathOnRoad(java.awt.Point start,
                                            java.awt.Point end,
                                            Route route,
                                            java.util.List segments)

  Displays a Route between two points on the map.

  Parameters:
    `start` - start from start point on map
    `end` - to end point on map
    `route` - the Route to travel from start to end
    `segments` - as side effect, populated with PathSegments between returned WayPoints
  Returns:
    List of WayPoints

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