Application: gvSIG desktop

/*

 * Created on 25-feb-2005

 */

package org.cresques.io.raster;

import java.awt.Image;

import java.awt.image.BufferedImage;

/**

 * Clase base para los filtros de calculo de m?ximo y m?nimo en sus diferentes 

 * tipos de datos.

 */ 

public class ComputeMinMaxImageFilter extends ComputeMinMaxFilter {

        public ComputeMinMaxImageFilter(){

                super();

        }

        public void pre(){

                //Obtenci?n de par?metros

                this.image = (Image)params.get("raster");

                height = image.getHeight(null);

                width = image.getWidth(null);

                super.pre();

        }

        public void process(int x, int y) {

                int px = ((BufferedImage) image).getRGB(x,y);

                min[0] = Math.min(min[0], (px & 0xff0000) >> 16);

                max[0] = Math.max(max[0], (px & 0xff0000) >> 16);

                min[1] = Math.min(min[1], (px & 0x00ff00) >> 8);

                max[1] = Math.max(max[1], (px & 0x00ff00) >> 8);

                min[2] = Math.min(min[2], (px & 0x0000ff));

                max[2] = Math.max(max[2], (px & 0x0000ff));

        }

        public int getInRasterDataType(){

                return RasterBuf.TYPE_IMAGE;

        }

        public int getOutRasterDataType(){

                return RasterBuf.TYPE_IMAGE;

        }

        public void post(){

                super.post();

        };

        public void processLine(int y){};

}