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.tools.app.basic.tool.filter.grayscale;

import org.gvsig.fmap.dal.coverage.RasterLocator;

import org.gvsig.fmap.dal.coverage.dataset.Buffer;

import org.gvsig.fmap.dal.coverage.datastruct.Params;

import org.gvsig.fmap.dal.coverage.exception.FilterAddException;

import org.gvsig.fmap.dal.coverage.grid.filter.BaseRasterFilter;

/**

 * <P>

 * Clase base para los filtros de conversi?n a escala de gris

 * </P>

 *

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

 */

public class GrayScaleFilter extends BaseRasterFilter {

        public static final int        R                = 0;

        public static final int        G                = 1;

        public static final int        B                = 2;

        public static final int        RGB              = 3;

        public static final int        GRAY             = 4;

        public static final int        UNDEFINED        = -1;

        public static String[]         names            = new String[] { "grayscale" };

        protected int                  type             = UNDEFINED;

        /**

         * Constructor

         */

        public GrayScaleFilter() {

                super();

                setName(names[0]);

        }

        public void pre() throws FilterAddException {

                super.pre();

                type = ((Integer)params.get("typeBand")).intValue();

                if(type == RGB && raster.getBandCount() < 3)

                        type = R;

                createARGBBufferResult();

        }

        public String getGroup() {

                return "colores";

        }

        public String[] getNames() {

                return names;

        }

        public Params getUIParams(String nameFilter) {

                if(type == UNDEFINED) {

                        if(this.params != null) {

                                Object obj = this.params.get("typeBand");

                                if(obj != null)

                                        type = ((Integer)obj).intValue();

                        }

                }

                Params params = RasterLocator.getManager().createParams(

                                "typeBand", 

                                new Integer(R), 

                                Params.CHOICE, 

                                new String[]{ "R", "G", "B", "RGB", "GRAY"});

                return params;

        }

        public void post() {

        }

        public void process(int x, int y) {

        }

        public int getOutRasterDataType() {

                return Buffer.TYPE_BYTE;

        }

        public boolean isVisible() {

                return true;

        }

        public int getInRasterDataType() {

                return Buffer.TYPE_BYTE;

        }

}