svn-gvsig-desktop / tags / Root_v061 / libraries / libCq CMS for java.old / src / org / cresques / io / raster / RasterFilter.java @ 4812
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/* Cresques Mapping Suite. Graphic Library for constructing mapping applications.
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*
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* Copyright (C) 2004-5.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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*
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* For more information, contact:
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*
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* cresques@gmail.com
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*/
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package org.cresques.io.raster; |
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import java.awt.Image; |
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import java.util.Hashtable; |
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import org.cresques.geo.ViewPortData; |
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import org.cresques.px.Extent; |
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/**
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* Filtro para raster. Ancestro de todos los filtros.
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* @author Luis W. Sevilla (sevilla_lui@gva.es)
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*/
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public abstract class RasterFilter implements IRasterFilter { |
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protected RasterBuf raster = null; |
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protected RasterStats stats = null; |
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protected Image image = null; |
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protected int[] px = new int[4]; |
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protected int height = 0; |
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protected int width = 0; |
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protected Hashtable params = new Hashtable(); |
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protected int incX = 1; |
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protected int incY = 1; |
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protected ViewPortData viewPortData = null; |
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protected Extent extent = null; |
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/**
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* Variable que control la aplicaci?n o no del filtro. Si est? a false aunque est? en
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* la pila el filtro no se ejecutar?.
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*/
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protected boolean exec = true; |
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/**
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* @author Nacho Brodin (brodin_ign@gva.es)
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*/
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public static class Kernel{ |
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public float[][] kernel = null; |
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public Kernel(float[][] k){ |
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this.kernel = k;
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} |
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public float kernelOperation(Kernel k){ |
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float res = 0; |
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for(int i=0;i<3;i++) |
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for(int j=0;j<3;j++) |
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res += kernel[i][j] * k.kernel[i][j]; |
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return res;
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} |
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} |
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/**
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* Constructor
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*/
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public RasterFilter() {
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} |
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/**
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* Aplica el filtro sobre el raster pasado pixel a pixel
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*/
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public void execute() { |
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pre(); |
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if (exec) {
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for (int y = 0; y < height; y = y + incY) |
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for (int x = 0; x < width; x = x + incX) { |
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process(x, y); |
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} |
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} |
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post(); |
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} |
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/**
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* Aplica el filtro sobre el raster pasado por lineas
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*/
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public void executeLines() { |
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if (exec) {
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for (int y = 0; y < height; y++) |
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processLine(y); |
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} |
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} |
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/**
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* A?ade un par?metro al filtro
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* @param name Clave del par?metro
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* @param param Objeto pasado como par?metro
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*/
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public void addParam(String name, Object param) { |
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params.put(name, param); |
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} |
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/**
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* Elimina un par?metro del filtro
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* @param name Clave del par?metro a eliminar
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*/
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public void removeParam(String name){ |
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params.remove(name); |
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} |
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/**
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* Obtiene un par?metro a partir de la clave
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* @param name Par?metro
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* @return Par?metro
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*/
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public Object getParam(String name){ |
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return params.get(name);
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} |
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/**
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* Funci?n que contiene el c?digo a ejecutar antes de aplicar el filtro
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*/
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abstract public void pre(); |
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/**
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* Funci?n que contiene el c?digo a ejecutar despues de aplicar el filtro
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*/
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abstract public void post(); |
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/**
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* Ejecuci?n del filtro para un pixel de la imagen
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*/
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abstract public void process(int x, int y); |
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/**
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* Ejecuci?n del filtro para una l?nea de la imagen
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*/
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abstract public void processLine(int y); |
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/**
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* Obtiene el tipo de datos del raster de entrada
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*/
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abstract public int getInRasterDataType(); |
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/**
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* Obtiene el tipo de datos del raster de salida
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*/
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abstract public int getOutRasterDataType(); |
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/**
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* Obtiene el resultado del filtro despues de su ejecuci?n a trav?s de una clave
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* @param name clave para obtener un objeto resultado del filtro.
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*/
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abstract public Object getResult(String name); |
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/**
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* @param viewPortData The viewPortData to set.
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*/
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public void setViewPortData(ViewPortData viewPortData) { |
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this.viewPortData = viewPortData;
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} |
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/**
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* @param extent The extent to set.
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*/
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public void setExtent(Extent extent) { |
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this.extent = extent;
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} |
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/**
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* Obtiene true si el filtro va a ser ejecutado o false si no va a serlo
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* @return
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*/
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public boolean isExec() { |
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return exec;
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} |
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/**
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* Asigna el valor a la variable exec. Esta estar? a true si el filtro se ejecutar? la pr?xima
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* vez que se repinte o false si no se ejecuta.
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* @param exec
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*/
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public void setExec(boolean exec) { |
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this.exec = exec;
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} |
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} |