TileRangeMask.java

/**
 * 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 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.geowebcache.storage;

import org.geowebcache.seed.GWCTask;

/**
 * A mask applied to a {@link DiscontinuousTileRange} to limit which tiles are seeded/truncated out
 * of the range's full coverage by means of a {@link TileRangeIterator}.
 * 
 * @see RasterMask
 * @see TileRangeIterator
 * @see GWCTask
 */
public interface TileRangeMask {

    public abstract long[][] getGridCoverages();

    public abstract boolean lookup(long x, long y, int z);

}