001 package net.sf.cpsolver.ifs.example.rpp;
002
003 import net.sf.cpsolver.ifs.model.Value;
004
005 /**
006 * Location (value, i.e., a single placement of the rectangle). Location encodes
007 * X and Y coordinate.
008 *
009 * @version IFS 1.2 (Iterative Forward Search)<br>
010 * Copyright (C) 2006 - 2010 Tomas Muller<br>
011 * <a href="mailto:muller@unitime.org">muller@unitime.org</a><br>
012 * <a href="http://muller.unitime.org">http://muller.unitime.org</a><br>
013 * <br>
014 * This library is free software; you can redistribute it and/or modify
015 * it under the terms of the GNU Lesser General Public License as
016 * published by the Free Software Foundation; either version 3 of the
017 * License, or (at your option) any later version. <br>
018 * <br>
019 * This library is distributed in the hope that it will be useful, but
020 * WITHOUT ANY WARRANTY; without even the implied warranty of
021 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
022 * Lesser General Public License for more details. <br>
023 * <br>
024 * You should have received a copy of the GNU Lesser General Public
025 * License along with this library; if not see
026 * <a href='http://www.gnu.org/licenses/'>http://www.gnu.org/licenses/</a>.
027 */
028 public class Location extends Value<Rectangle, Location> {
029 private int iX, iY;
030
031 /**
032 * Constructor
033 *
034 * @param rectangle
035 * parent variable
036 * @param x
037 * x coordinate
038 * @param y
039 * y coordinate
040 */
041 public Location(Rectangle rectangle, int x, int y) {
042 super(rectangle);
043 iX = x;
044 iY = y;
045 }
046
047 /** Gets x coordinate */
048 public int getX() {
049 return iX;
050 }
051
052 /** Gets y coordinate */
053 public int getY() {
054 return iY;
055 }
056
057 /**
058 * Compare two coordinates. It is based on comparison of the parent
059 * rectangle and x,y coordinates
060 */
061 @Override
062 public boolean equals(Object object) {
063 if (object == null || !(object instanceof Location)) {
064 return false;
065 }
066 Location location = (Location) object;
067
068 return (variable().equals(location.variable()) && location.getX() == getX() && location.getY() == getY());
069 }
070
071 /**
072 * String representation (for debugging and printing purposes). For example,
073 * rect43=[12,10] where rect43 is the name of the parent rectangle and
074 * [12,10] is the location.
075 */
076 @Override
077 public String toString() {
078 return variable().getName() + "=[" + getX() + "," + getY() + "]";
079 }
080
081 /** Location's name. E.g., [12,10] where x=12 and y=10. */
082 @Override
083 public String getName() {
084 return "[" + getX() + "," + getY() + "]";
085 }
086
087 /** Returns true if the given location intersects with this location */
088 public boolean hasIntersection(Location anotherLocation) {
089 if (getX() + (variable()).getWidth() <= anotherLocation.getX()) {
090 return false;
091 }
092 if (getY() + (variable()).getHeight() <= anotherLocation.getY()) {
093 return false;
094 }
095 if (anotherLocation.getX() + (anotherLocation.variable()).getWidth() <= getX()) {
096 return false;
097 }
098 if (anotherLocation.getY() + (anotherLocation.variable()).getHeight() <= getY()) {
099 return false;
100 }
101 return true;
102 }
103 }