jfreerails.client.view
Class NearestStationFinder

java.lang.Object
  jfreerails.client.view.NearestStationFinder

public class NearestStationFinder
extends java.lang.Object

Provides methods that find the nearest station in a given direction, used by the select station popup window.

Author:

Luke

Field Summary

private int	MAX_DISTANCE_TO_SELECT_SQUARED
static int	NOT_FOUND
private FreerailsPrincipal	principal
private ReadOnlyWorld	world

Constructor Summary

NearestStationFinder(ReadOnlyWorld w, FreerailsPrincipal player)

Method Summary

int	findNearestStation(int x, int y)
int	findNearestStationInDirection(int startStation, Step direction)
private boolean	isInRightDirection(Step direction, int deltaX, int deltaY) Returns true if the angle between direction and the vector (deltaX, deltaY) is less than 45 degrees.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

NOT_FOUND

public static final int NOT_FOUND

See Also:

Constant Field Values

world

private final ReadOnlyWorld world

principal

private final FreerailsPrincipal principal

MAX_DISTANCE_TO_SELECT_SQUARED

private final int MAX_DISTANCE_TO_SELECT_SQUARED

See Also:

Constant Field Values

Constructor Detail

NearestStationFinder

public NearestStationFinder(ReadOnlyWorld w,
                            FreerailsPrincipal player)

Method Detail

findNearestStation

public int findNearestStation(int x,
                              int y)

findNearestStationInDirection

public int findNearestStationInDirection(int startStation,
                                         Step direction)

isInRightDirection

private boolean isInRightDirection(Step direction,
                                   int deltaX,
                                   int deltaY)

Returns true if the angle between direction and the vector (deltaX, deltaY) is less than 45 degrees.