Application: gvSIG desktop » gvSIG raster

/* gvSIG. Geographic Information System of the Valencian Government

*

* Copyright (C) 2007-2008 Infrastructures and Transports Department

* of the Valencian Government (CIT)

* 

* This program is free software; you can redistribute it and/or

* modify it under the terms of the GNU General Public License

* as published by the Free Software Foundation; either version 2

* 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 General Public License

* along with this program; if not, write to the Free Software

* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, 

* MA  02110-1301, USA.

* 

*/

package org.gvsig.raster.fmap.layers;

import java.awt.geom.Point2D;

import org.gvsig.fmap.dal.exception.InitializeException;

import org.gvsig.fmap.geom.exception.CreateEnvelopeException;

import org.gvsig.fmap.geom.primitive.Envelope;

/**

 * Layers with levels of multiresolution support

 *  

 * @author Nacho Brodin (nachobrodin@gmail.com)

 *

 */

public interface Multiresolution {

        /**

         * Returns true if the multiresolution is enabled

         * @return

         */

        public boolean isEnabledMultiresolution();

        /**

         * Gets the current zoom level

         * @return

         */

        public int getZoomLevel();

        /**

         * Sets the current zoom level

         * @param zoomLevel

         */

        public void setZoomLevel(int zoomLevel);

        /**

         * Increase the current zoom level

         */

        public boolean increaseZoomLevel();

        /**

         * Decrease the current zoom level

         */

        public boolean decreaseZoomLevel();

        /**

         * Calculates the bounding box of a zoom level using a center defined in pixels.

         * It's possible to define the center in pixels because a level of resolution has

         * a pixel size. 

         * @param center 

         *                         center in world coordinates

         * @param level 

         *                         level of resolution

         * @param w 

         *                         width in pixels

         * @param h 

         *                         height in pixels

         * @return

         */

        public Envelope getCoordsInLevel(Point2D center, int level, int w, int h) throws CreateEnvelopeException;

        /**

         * Sets a tile server to create a second level of cache. This second level will be

         * created if the cache structure is different to the current.

         * @param tileServer

         */

        public void setTileServer(Class<?> tileServer) throws InitializeException;

}