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/*

 * Cresques Mapping Suite. Graphic Library for constructing mapping applications.

 *

 * Copyright (C) 2004-5.

 *

 * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 *

 * For more information, contact:

 *

 * cresques@gmail.com

 */

package org.cresques.filter.bands;

import org.cresques.filter.RasterFilter;

import org.cresques.io.datastruct.Statistic;

/**

 *

 * @author Nacho Brodin (brodin_ign@gva.es)

 */

public abstract class RemoveBandsFilter extends RasterFilter {

    public String bands = "RGB";

    protected int mascara = 0xffffffff;

    protected int m0 = 0xff;

    protected int m1 = 0xff;

    protected int m2 = 0xff;

    protected int m3 = 0xff;

    /**

     * Constructor

     *

     */

    public RemoveBandsFilter() {

        super();

    }

    /**

     * Operaciones que se realizan antes de la ejecuci?n del filtro

     */

    public void pre() {

        //Obtenci?n de par?metros comunes a todos

        this.stats = (Statistic) params.get("stats");

        this.bands = (String) params.get("bands");

        if (bands.compareTo("RGB") == 0) { //No modifica ninguna banda -> no se ejecuta el filtro

            this.exec = false;

            return;

        }

        if (bands.compareTo("R") == 0) {

            mascara = 0xff00ffff;

            m1 = 0x00;

        }

        if (bands.compareTo("G") == 0) {

            mascara = 0xffff00ff;

            m2 = 0x00;

        }

        if (bands.compareTo("B") == 0) {

            mascara = 0xffffff00;

            m3 = 0x00;

        }

        if (bands.compareTo("RG") == 0) {

            mascara = 0xff0000ff;

            m1 = m2 = 0x00;

        }

        if (bands.compareTo("RB") == 0) {

            mascara = 0xff00ff00;

            m1 = m3 = 0x00;

        }

        if (bands.compareTo("GB") == 0) {

            mascara = 0xffff0000;

            m2 = m3 = 0x00;

        }

    }

    /**

     * Operaciones que se realizan despu?s de la ejecuci?n del filtro

     */

    public void post() {

    }

}