svn-gvsig-desktop / branches / CqCMSDvp / libraries / libCq CMS for java.old / src / org / cresques / io / raster / RasterFilterStack.java @ 2312
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/*
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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.Vector; |
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/**
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* Esta clase representa la pila de filtros que debe ser manejada desde el
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* RasterFilterStackManager.
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* @author Nacho Brodin (brodin_ign@gva.es)
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*
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*/
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public class RasterFilterStack{ |
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private Image image = null; |
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private RasterBuf rasterBuf = null; |
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private RasterFilter rasterFilter = null; |
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private int[] order = null; |
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private RasterStats stats = null; |
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Vector stack = new Vector(); |
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private int typeFilter = -2; |
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/**
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* Un RasterFilterStack almacena objetos Filter que representan a un filtro. Esta
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* clase contiene la informaci?n necesaria para el mantenimiento de de la pila y el
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* RasterFilter para cuando se aplica la pila sobre el raster de entrada.
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* @author Nacho Brodin <brodin_ign@gva.es>
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*/
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class Filter{ |
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public int type = 0; //Tipo de filtro. Ctes en RasterFilterStackManager |
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public boolean tmp = true; //Flag de temporalidad |
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public RasterFilter filter = null; //Filtro |
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public Filter(int type, RasterFilter filter){ |
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this.filter = filter;
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this.type = type;
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} |
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} |
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/**
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* Constructor
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* @param stats
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*/
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public RasterFilterStack(RasterStats stats){
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this.stats = stats;
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} |
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/**
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* Resetea el flag de temporalidad de los filtros de la pila.
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* Esto equivale a fijar los filtros que ya existen en la pila. A partir de
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* ese momento los filtros que se introduzcan podr?n ser eliminados de golpe
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* llamando a la funci?n deleteTempFilters
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*/
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public void resetTempFilters(){ |
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for(int i=stack.size()-1;i>=0;i--) |
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((Filter)stack.get(i)).tmp = false; |
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} |
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/**
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* Elimina los filtros temporales, es decir, todos los filtros introducidos desde
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* el ?ltimo resetTempFilters que se ha realizado.
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*/
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public void deleteTempFilters(){ |
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for(int i=stack.size()-1;i>=0;i--){ |
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if(((Filter)stack.get(i)).tmp) |
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stack.remove(i); |
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} |
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sort(); |
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} |
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/**
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* A?ade un filtro a la pila
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* @param type Tipo de filtro
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* @param filter filtro a?adido
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*/
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public void addFilter(int type, RasterFilter filter){ |
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stack.add(new Filter(type, filter)); |
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this.sort();
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} |
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/**
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* Elimina el ?ltimo filtro de la pila
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*/
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public void removeFilter(){ |
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stack.remove(stack.size()-1);
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} |
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/**
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* Asigna el tipo filtro
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* @param type
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*/
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public void setDataTypeInFilter(int type){ |
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this.typeFilter = type;
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} |
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/**
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* Devuelve el tipo de dato de retorno al aplicar la pila de filtros
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* @return
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*/
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public int getOutDataType(){ |
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if(image != null && rasterBuf == null) |
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return RasterBuf.TYPE_IMAGE;
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else
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return rasterBuf.getDataType();
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} |
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/**
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* Devuelve el raster o image resultado de la aplicacion de la pila de filtros
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* @return
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*/
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public Object getResult(){ |
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if(image != null && rasterBuf == null) |
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return image;
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else
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return rasterBuf;
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} |
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/**
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* Devuelve true si typeA est? por encima de typeB en la pila y false si no lo est?
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* @param typeA Tipo de filtro
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* @param typeB Tipo de filtro
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* @return
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*/
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private boolean isOnTop(int typeA, int typeB){ |
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int posA=-1; |
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int posB=-1; |
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for(int i=0;i<order.length;i++){ |
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if(order[i] == typeA)posA = i;
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if(order[i] == typeB)posB = i;
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if(posA != -1 && posB != -1)break; |
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} |
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if(posA<posB)return true; |
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else return false; |
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} |
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/**
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* Dado un tipo de filtro calcula a partir de la pila en que posici?n est? situado y
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* obtiene el tipo de dato de la salida anterior. Esto le dir? al cliente de que tipo
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* es el filtro que tiene que introducir.
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* @param type
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*/
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public int getDataTypeInFilter(int type){ |
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for(int i=0; i<stack.size(); i++){ |
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if( isOnTop(((Filter)stack.get(i)).type , type ) ){ |
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return ((Filter)stack.get(i)).filter.getOutRasterDataType(); |
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} |
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} |
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return this.typeFilter; |
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} |
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/**
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* Asigna el vector para la ordenaci?n por tipos
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* @param order
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*/
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public void setOrder(int[] order){ |
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this.order = order;
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} |
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/**
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* Ordena los filtros en el orden establecido por el Manager
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*/
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public void sort(){ |
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Vector aux = new Vector(); |
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for(int norden=order.length-1;norden>=0;norden--){ |
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for(int i=stack.size()-1;i>=0;i--){ |
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if(((Filter)stack.get(i)).type == order[norden]){ |
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aux.add(stack.get(i)); |
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} |
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} |
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} |
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stack = aux; |
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aux = null;
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} |
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/**
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* Elimina los filtros de la pila de un determinado tipo
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* @param type Tipo de filtro a eliminar
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*/
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public void removeFilter(int type){ |
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for(int i=stack.size()-1;i>=0;i--){ |
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if(((Filter)stack.get(i)).type == type){ |
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stack.remove(i); |
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} |
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} |
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} |
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/**
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* Elimina un filtro concreto de la pila
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* @param type
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*/
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public void removeFilter(RasterFilter filter){ |
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for(int i=stack.size()-1;i>=0;i--){ |
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if(((Filter)stack.get(i)).filter.equals(filter)){ |
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stack.remove(i); |
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} |
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} |
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} |
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/**
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* Obtiene la cantidad de filtros en la pila
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* @return N?mero de filtros apilados
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*/
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public int lenght(){ |
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return stack.size();
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} |
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/**
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* Obtiene el filtro apilado de la posici?n i
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* @param i Posici?n a acceder en la pila
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* @return Filtro
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*/
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public RasterFilter get(int i){ |
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return ((Filter)stack.get(i)).filter; |
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} |
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/**
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* Obtiene el tipo del filtro de la pila de la posici?n i
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* @param i Posici?n a acceder en la pila
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* @return tipo de filtro
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*/
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public int getType(int i){ |
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return ((Filter)stack.get(i)).type; |
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} |
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/**
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* Elimina todos los filtros de la pila
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*/
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public void clear(){ |
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stack.removeAllElements(); |
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} |
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/**
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* Sustituye un filtro de una posici?n de la pila por otro
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* @param filter
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* @param i
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*/
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public void replace(RasterFilter filter, int i, int type){ |
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((Filter)stack.get(i)).filter = filter;
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((Filter)stack.get(i)).type = type;
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} |
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/**
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* Asigna el raster de entrada inicial
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* @param raster
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*/
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public void setInitRasterBuf(Object raster){ |
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if(raster instanceof RasterBuf){ |
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rasterBuf = (RasterBuf)raster; |
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this.typeFilter = rasterBuf.getDataType();
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} |
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if(raster instanceof Image){ |
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image = (Image)raster;
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this.typeFilter = RasterBuf.TYPE_IMAGE;
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} |
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} |
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/**
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* Devuelve el tipo de datos inicial de la pila
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* @return Tipo de dato del raster inicial
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*/
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public int getInitDataType(){ |
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return typeFilter;
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} |
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/**
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* M?todo que devuelve true si el tipo de filtro pasado por par?metro est? en la
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* pila y false si no lo est?.
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* @param type Tipo de par?metro a comprobar
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* @return true si est? en la pila y false si no lo est?
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*/
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public boolean isActive(int type){ |
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for(int i=stack.size()-1;i>=0;i--){ |
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if(((Filter)stack.get(i)).type == type) |
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return true; |
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} |
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return false; |
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} |
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/**
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* M?todo que devuelve true si el tipo de filtro pasado por par?metro est? en la
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* pila y false si no lo est?.
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* @param filter Tipo de filtro a comprobar
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* @return true si est? en la pila y false si no lo est?
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*/
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public boolean isActive(RasterFilter filter){ |
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for(int i=stack.size()-1;i>=0;i--){ |
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if(((Filter)stack.get(i)).filter.equals(filter)) |
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return true; |
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} |
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return false; |
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} |
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/**
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* Obtiene el objeto RasterStats
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* @return
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*/
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public RasterStats getStats(){
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return this.stats; |
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} |
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/**
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* Aplica los filtros de la pila sobre el buffer correspondiente
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* @param dataType
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*/
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private void executeFilterByDataType(int dataType){ |
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for(int i=stack.size()-1;i>=0;i--){ |
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RasterFilter filter = ((Filter)stack.get(i)).filter;
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//System.err.println("SACANDO FILTRO "+i+" "+filter.toString());
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if(filter.getInRasterDataType() == RasterBuf.TYPE_IMAGE)
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filter.addParam("raster", image);
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else
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filter.addParam("raster", rasterBuf);
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filter.execute(); |
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if(filter.getResult("stats")!=null) |
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this.stats = (RasterStats)filter.getResult("stats"); |
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if(filter.getOutRasterDataType() == RasterBuf.TYPE_IMAGE){
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if(filter.getResult("raster")!=null){ |
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this.image = (Image)filter.getResult("raster"); |
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this.rasterBuf = null; |
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} |
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}else{
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if(filter.getResult("raster")!=null){ |
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this.rasterBuf = (RasterBuf)filter.getResult("raster"); |
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this.image = null; |
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} |
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} |
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} |
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} |
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/**
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* Aplica los filtros sobre un Image
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* @param image Buffer inicial sobre el que se aplican los filtros
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*/
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public void execute(Image image){ |
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this.image = image;
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executeFilterByDataType(RasterBuf.TYPE_IMAGE); |
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} |
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/**
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* Aplica los filtros sobre un RasterBuf
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* @param rasterBuf Buffer inicial sobre el que se aplican los filtros
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*/
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public void execute(RasterBuf rasterBuf){ |
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this.rasterBuf = rasterBuf;
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executeFilterByDataType(RasterBuf.TYPE_SHORT); |
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} |
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/**
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*Muestra el contenido de la pila de filtros para depuraci?n
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*/
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public void show(){ |
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System.out.println("--------------------------------------------"); |
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for(int i=stack.size()-1;i>=0;i--){ |
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System.out.println( "FILTRO:"+i+ |
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" TIPO:"+((Filter)stack.get(i)).type+ |
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" TEMP:"+((Filter)stack.get(i)).tmp+ |
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" FIL:"+((Filter)stack.get(i)).filter.toString()); |
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} |
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} |
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} |