/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2015, Open Source Geospatial Foundation (OSGeo)
*
* 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;
* version 2.1 of the License.
*
* 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.
*/
package org.geotools.tile.impl;
/**
* <p>
* The WebMercatorTileService is an abstract class that holds some of the tile
* service logic for Mercator-based tile services.
* </p>
*
* @author to.srwn
* @author Ugo Taddei
* @since 12
* @source $URL:
* http://svn.osgeo.org/geotools/trunk/modules/unsupported/tile-client
* /src/main/java/org/geotools/tile/impl/WebMercatorZoomLevel.java $
*/
public class WebMercatorZoomLevel extends ZoomLevel {
public WebMercatorZoomLevel(int zoomLevel) {
super(zoomLevel);
}
/**
* The maximum tile-number: For example at zoom-level 2, the tilenames are
* in the following range: 2/0/0 - 2/3/3 (zoom-level/x/y):
* zoom-level/2^(zoom-level)-1/2^(zoom-level)-1)
*/
public int calculateMaxTilePerColNumber(int zoomLevel) {
return (1 << zoomLevel); // 2 ^ (zoomLevel)
}
public int calculateMaxTilePerRowNumber(int zoomLevel) {
return calculateMaxTilePerColNumber(zoomLevel);
}
}