Application: gvSIG desktop

/*

 * 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.io.raster;

import java.awt.Image;

/**

 * Calcula el m?ximo y el m?nimo de un raster.

 * @author Luis W. Sevilla (sevilla_lui@gva.es)

 */

public class ComputeMinMaxShortFilter extends ComputeMinMaxFilter {

        /**

         * Constructor

         *

         */

        public ComputeMinMaxShortFilter(){

                super();

        }

        /* (non-Javadoc)

         * @see org.cresques.io.raster.IRasterFilter#pre()

         */

        public void pre(){

                //Obtenci?n de par?metros

                this.raster = (RasterBuf)params.get("raster");

                height = raster.getHeight();

                width = raster.getWidth();

                super.pre();

        }

        /* (non-Javadoc)

         * @see org.cresques.io.raster.IRasterFilter#process(int, int)

         */

        public void process(int x, int y) {

                raster.getElemInt(x, y, px);

                int pxBand = px[0]; 

                if(pxBand<min[0]){

                        secondMin[0] = min[0];

                        min[0] = pxBand;

                }else if(pxBand < secondMin[0] && pxBand!=min[0])

                        secondMin[0] = pxBand;

                if(pxBand>max[0]){

                        secondMax[0] = max[0];

                        max[0] = pxBand;

                }else if(pxBand > secondMax[0] && pxBand!=max[0])

                        secondMax[0] = pxBand;

                pxBand = px[1]; 

                if(pxBand<min[1]){

                        secondMin[1] = min[1];

                        min[1] = pxBand;

                }else if(pxBand < secondMin[1] && pxBand!=min[1])

                        secondMin[1] = pxBand;

                if(pxBand>max[1]){

                        secondMax[1] = max[1];

                        max[1] = pxBand;

                }else if(pxBand > secondMax[1] && pxBand!=max[1])

                        secondMax[1] = pxBand;

                pxBand = px[2];

                if(pxBand<min[2]){

                        secondMin[2] = min[2];

                        min[2] = pxBand;

                }else if(pxBand < secondMin[2] && pxBand!=min[2])

                        secondMin[2] = pxBand;

                if(pxBand>max[2]){

                        secondMax[2] = max[2];

                        max[2] = pxBand;

                }else if(pxBand > secondMax[2] && pxBand!=max[2])

                        secondMax[2] = pxBand;

        }

        /* (non-Javadoc)

         * @see org.cresques.io.raster.IRasterFilter#getInRasterDataType()

         */

        public int getInRasterDataType(){

                return RasterBuf.TYPE_SHORT;

        }

        /* (non-Javadoc)

         * @see org.cresques.io.raster.IRasterFilter#getOutRasterDataType()

         */

        public int getOutRasterDataType(){

                return RasterBuf.TYPE_SHORT;

        }

        /* (non-Javadoc)

         * @see org.cresques.io.raster.IRasterFilter#post()

         */

        public void post(){

                super.post();

        };

        /* (non-Javadoc)

         * @see org.cresques.io.raster.RasterFilter#processLine(int)

         */

        public void processLine(int y){};

}