/* * Copyright 2010, 2011, 2012 mapsforge.org * * This program 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 3 of the License, or (at your option) any later version. * * This program 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 program. If not, see <http://www.gnu.org/licenses/>. */ package org.mapsforge.core.model; import java.io.Serializable; /** * A MapPosition represents an immutable pair of {@link GeoPoint} and zoom level. */ public class MapPosition implements Serializable { private static final long serialVersionUID = 1L; /** * The geographical coordinates of the map center. */ public final GeoPoint geoPoint; /** * The zoom level of the map. */ public final byte zoomLevel; /** * @param geoPoint * the geographical coordinates of the map center. * @param zoomLevel * the zoom level of the map. * @throws IllegalArgumentException * if {@code geoPoint} is null or {@code zoomLevel} is negative. */ public MapPosition(GeoPoint geoPoint, byte zoomLevel) { if (geoPoint == null) { throw new IllegalArgumentException("geoPoint must not be null"); } else if (zoomLevel < 0) { throw new IllegalArgumentException("zoomLevel must not be negative: " + zoomLevel); } this.geoPoint = geoPoint; this.zoomLevel = zoomLevel; } @Override public boolean equals(Object obj) { if (this == obj) { return true; } else if (!(obj instanceof MapPosition)) { return false; } MapPosition other = (MapPosition) obj; if (this.geoPoint == null) { if (other.geoPoint != null) { return false; } } else if (!this.geoPoint.equals(other.geoPoint)) { return false; } else if (this.zoomLevel != other.zoomLevel) { return false; } return true; } @Override public int hashCode() { final int prime = 31; int result = 1; result = prime * result + ((this.geoPoint == null) ? 0 : this.geoPoint.hashCode()); result = prime * result + this.zoomLevel; return result; } @Override public String toString() { StringBuilder stringBuilder = new StringBuilder(); stringBuilder.append("geoPoint="); stringBuilder.append(this.geoPoint); stringBuilder.append(", zoomLevel="); stringBuilder.append(this.zoomLevel); return stringBuilder.toString(); } }