/*
* The JTS Topology Suite is a collection of Java classes that
* implement the fundamental operations required to validate a given
* geo-spatial data set to a known topological specification.
*
* Copyright (C) 2001 Vivid Solutions
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* For more information, contact:
*
* Vivid Solutions
* Suite #1A
* 2328 Government Street
* Victoria BC V8T 5G5
* Canada
*
* (250)385-6040
* www.vividsolutions.com
*/
package com.revolsys.geometry.geomgraph;
/**
* A Position indicates the position of a Location relative to a graph component
* (Node, Edge, or Area).
* @version 1.7
*/
public class Position {
/** An indicator that a Location is to the <i>left</i> of a GraphComponent */
public static final int LEFT = 1;
/** An indicator that a Location is <i>on</i> a GraphComponent */
public static final int ON = 0;
/** An indicator that a Location is to the <i>right</i> of a GraphComponent */
public static final int RIGHT = 2;
/**
* Returns LEFT if the position is RIGHT, RIGHT if the position is LEFT, or the position
* otherwise.
*/
public static final int opposite(final int position) {
if (position == LEFT) {
return RIGHT;
}
if (position == RIGHT) {
return LEFT;
}
return position;
}
}