svn-gvsig-desktop / branches / CqCMSDvp / libraries / libCq CMS for java.old / src / org / cresques / io / raster / RasterFilter.java @ 2167
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/*
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* Created on 25-feb-2005
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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 java.util.Vector; |
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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 boolean exec = true; //Si est? a false no se ejecuta el filtro |
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public RasterFilter(){}
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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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*/
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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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* 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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