svn-gvsig-desktop / tags / v1_1_Build_1014 / libraries / libCq_CMS_praster / src / org / cresques / io / data / GeoRasterMultiFile.java @ 13593
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/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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*
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* Copyright (C) 2006 IVER T.I. and Generalitat Valenciana.
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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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package org.cresques.io.data; |
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import java.awt.geom.Point2D; |
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import java.io.File; |
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import java.util.ArrayList; |
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import org.cresques.io.GeoRasterFile; |
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import org.cresques.io.exceptions.BandFoundInListException; |
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import org.cresques.io.exceptions.FileFoundInListException; |
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import org.cresques.io.exceptions.NotSupportedExtensionException; |
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import org.cresques.px.Extent; |
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/**
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* Clase que representa una imagen de raster georreferenciada formada por varias
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* imagenes de disco que tienen la misma extensi?n. Contiene funcionalidades para
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* abrir ficheros, gestionar el extent, pintar el raster sobre un DataImage con
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* su gesti?n de bandas correspondiente.
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*
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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 GeoRasterMultiFile{ |
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//File list
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private ArrayList files = new ArrayList(); |
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private String name = null; |
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//Band list
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private BandList bandList = new BandList(); |
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public GeoRasterMultiFile(String name){ |
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this.name = name;
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} |
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/**
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* Add a file to the list.
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* @param f file to add.
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*/
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public void addFile(GeoRasterFile f)throws FileFoundInListException{ |
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if(findFile(f))
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throw new FileFoundInListException("The file already is in list."); |
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files.add(f); |
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addBands(f); |
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} |
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/**
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* A?ade un fichero a la lista a partir de su nombre
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* @param f fichero a a?adir.
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*/
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public void addFile(String fileName)throws FileFoundInListException, NotSupportedExtensionException{ |
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if(findFile(fileName))
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throw new FileFoundInListException("The file already is in list."); |
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GeoRasterFile f = GeoRasterFile.openFile(null, fileName);
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files.add(f); |
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addBands(f); |
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} |
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/**
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* A?ade el fichero a lista de georrasterfiles y sus bandas a la lista de bandas
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* @param grf
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*/
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private void addBands(GeoRasterFile grf){ |
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if(grf == null) |
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return;
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int dataType = grf.getDataType();
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for(int i = 0; i < grf.getBandCount();i++){ |
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try{
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Band band = new Band(grf.getName(), i, dataType);
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bandList.addBand(band, i); |
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}catch(BandFoundInListException ex){
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//No a?adimos la banda
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} |
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} |
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} |
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/**
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* Elimina un fichero a la lista a partir de su nombre
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* @param fileName Nombre del fichero a eliminar.
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*/
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public void removeFile(String fileName){ |
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for(int i=0;i<files.size();i++){ |
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if(((GeoRasterFile)files.get(i)).getName().equals(fileName)){
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files.remove(i); |
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bandList.removeBands(fileName); |
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return;
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} |
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} |
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} |
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/**
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* Elimina un fichero a la lista
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* @param file Fichero a eliminar
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*/
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public void removeFile(GeoRasterFile file){ |
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for(int i=0;i<files.size();i++){ |
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if(((GeoRasterFile)files.get(i)).getName().equals(file.getName())){
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files.remove(i); |
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bandList.removeBands(file.getName()); |
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return;
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} |
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} |
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} |
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/**
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* Obtiene el n?mero de ficheros en la lista
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* @return integer.
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*/
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public int getFileCount(){ |
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return files.size();
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} |
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/**
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* Encuentra un fichero en la lista.
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* @param file Fichero b?scado.
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* @return true si se ha hallado el fichero y false si no se
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* ha encontrado
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*/
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public boolean findFile(GeoRasterFile file){ |
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for(int i = 0;i<files.size();i++){ |
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GeoRasterFile grf = (GeoRasterFile)files.get(i); |
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if( grf.getName().equals(file.getName()))
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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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* Encuentra un fichero en la lista.
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* @param file Fichero b?scado.
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* @return true si se ha hallado el fichero y false si no se
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* ha encontrado
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*/
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public boolean findFile(String fileName){ |
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for(int i = 0;i<files.size();i++){ |
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if(((GeoRasterFile)files.get(i)).getName().equals(fileName))
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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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* @see org.javaGeoRaster.io.GeoData
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*/
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public void close(){ |
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for(int i = 0; i < files.size(); i++) |
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((GeoRasterFile)files.get(i)).close(); |
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} |
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/**
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* Obtiene en un array de String la lista de nombres de ficheros
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* @return lista de nombres de los ficheros del GeoRasterMultiFile
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*/
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public String[] getNameFileStringList(){ |
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String[] list = new String[files.size()]; |
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for(int i = 0; i < files.size(); i++) |
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list[i] = ((GeoRasterFile)files.get(i)).getName(); |
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return list;
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} |
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/**
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* Obtiene una ventana de datos de la imagen a partir de coordenadas reales.
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* No aplica supersampleo ni subsampleo sino que devuelve una matriz de igual tama?o a los
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* pixeles de disco.
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* @param x Posici?n X superior izquierda
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* @param y Posici?n Y superior izquierda
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* @param w Ancho en coordenadas reales
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* @param h Alto en coordenadas reales
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* @return Buffer de datos
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*/
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public RasterBuf getWindowRaster(double x, double y, double w, double h) { |
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Extent selectedExtent = new Extent(x, y, x + w, y - h);
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int width = (int)((selectedExtent.width() * ((GeoRasterFile)files.get(0)).getWidth()) / ((GeoRasterFile)files.get(0)).getExtent().width()); |
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int height = (int)((selectedExtent.height() * ((GeoRasterFile)files.get(0)).getHeight()) / ((GeoRasterFile)files.get(0)).getExtent().height()); |
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RasterBuf raster = new RasterBuf(getDataType()[0], width, height, bandList.getDrawableBandsCount(), false); |
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for(int i = 0; i < files.size(); i++) |
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raster = ((GeoRasterFile)files.get(i)).getWindowRaster(x, y, w, h, bandList, raster); |
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return raster;
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} |
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/**
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* Obtiene una ventana de datos de la imagen a partir de coordenadas reales.
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* Aplica supersampleo o subsampleo en funci?n del tama?o del buffer. Esta operaci?n la gestiona
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* el driver.
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* @param minX Valor m?nimo de la X en coordenadas reales
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* @param minY Valor m?nimo de la Y en coordenadas reales
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* @param maxX Valor m?ximo de la X en coordenadas reales
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* @param maxY Valor m?ximo de la Y en coordenadas reales
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* @param bufWidth ancho del buffer lde datos
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* @param bufHeight alto del buffer de datos
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* @param bandList
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* @return Buffer de datos
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*/
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public RasterBuf getWindowRaster(double minX, double minY, double maxX, double maxY, |
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int bufWidth, int bufHeight) { |
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RasterBuf raster = new RasterBuf(getDataType()[0], bufWidth, bufHeight, bandList.getDrawableBandsCount(), true); |
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for(int i = 0; i < files.size(); i++) |
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raster = ((GeoRasterFile)files.get(i)).getWindowRaster(minX, minY, maxX, maxY, bufWidth, bufHeight, bandList, raster); |
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return raster;
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} |
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/**
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* Obtiene una ventana de datos de la imagen a partir de coordenadas reales.
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* No aplica supersampleo ni subsampleo sino que devuelve una matriz de igual tama?o a los
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* pixeles de disco.
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* @param x Posici?n X superior izquierda
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* @param y Posici?n Y superior izquierda
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* @param w Ancho en coordenadas pixel
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* @param h Alto en coordenadas pixel
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* @param bandList
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* @return Buffer de datos
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*/
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public RasterBuf getWindowRaster(int x, int y, int w, int h) { |
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RasterBuf raster = new RasterBuf(getDataType()[0], w, h, bandList.getDrawableBandsCount(), true); |
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for(int i = 0; i < files.size(); i++) |
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raster = ((GeoRasterFile)files.get(i)).getWindowRaster(x, y, w, h, bandList, raster); |
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return raster;
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} |
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/**
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* Obtiene una ventana de datos de la imagen a partir de coordenadas reales.
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* No aplica supersampleo ni subsampleo sino que devuelve una matriz de igual tama?o a los
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* pixeles de disco.
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* @param x Posici?n X superior izquierda
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* @param y Posici?n Y superior izquierda
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* @param w Ancho en coordenadas reales
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* @param h Alto en coordenadas reales
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* @return Buffer de datos
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*/
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public RasterBuf getWindowRasterWithNoData(double x, double y, double w, double h) { |
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Extent selectedExtent = new Extent(x, y, x + w, y - h);
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//Leemos pixels completos aunque el valor obtenido sea decimal. Esto se consigue redondeando
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//por arriba el m?s alto y por abajo el menor y luego restandolos
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Point2D p1 = ((GeoRasterFile)files.get(0)).worldToRaster(new Point2D.Double(x, y)); |
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Point2D p2 = ((GeoRasterFile)files.get(0)).worldToRaster(new Point2D.Double(x + w, y - h)); |
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int width = (int)Math.abs(Math.ceil(p2.getX()) - Math.floor(p1.getX())); |
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int height = (int)Math.abs(Math.floor(p1.getY()) - Math.ceil(p2.getY())); |
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RasterBuf raster = new RasterBuf(getDataType()[0], width, height, bandList.getDrawableBandsCount(), true); |
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//Si no vamos a ajustar el extent al raster inicializamos el buffer a noData ya que este puede ser
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//m?s grande y salirse de los l?mites.
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initBufferToNoData(raster, bandList); |
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for(int i = 0; i < files.size(); i++) |
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raster = ((GeoRasterFile)files.get(i)).getWindowRasterWithNoData(x, y, w, h, bandList, raster); |
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return raster;
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} |
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/**
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* Inicializa el buffer a valores NoData
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* @param raster Buffer a inicializar
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* @param bandList Lista de bandas
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*/
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private void initBufferToNoData(RasterBuf raster, BandList bandList){ |
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for(int i = 0; i < bandList.getDrawableBandsCount(); i++){ |
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switch(getDataType()[0]){ |
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case RasterBuf.TYPE_BYTE:raster.assign(i, raster.getByteNoDataValue());break; |
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case RasterBuf.TYPE_SHORT:raster.assign(i, raster.getShortNoDataValue());break; |
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case RasterBuf.TYPE_INT:raster.assign(i, raster.getIntNoDataValue());break; |
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case RasterBuf.TYPE_FLOAT:raster.assign(i, raster.getFloatNoDataValue());break; |
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case RasterBuf.TYPE_DOUBLE:raster.assign(i, raster.getNoDataValue());break; |
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} |
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} |
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} |
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//******************************
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//Setters and Getters
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//******************************
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/**
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* Calcula el tama?o de los ficheros en disco
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* @return tama?o en bytes de todos los ficheros de la lista
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*/
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public long getFileSize(){ |
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int len = 0; |
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for(int i=0;i<files.size();i++){ |
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if(((GeoRasterFile)files.get(i)) != null){ |
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File f = new File(((GeoRasterFile)files.get(i)).getName()); |
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len += f.length(); |
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} |
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} |
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return len;
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} |
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/**
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* Obtiene la altura de la imagen a partir de la primera
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* @return altura
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*/
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public int getHeight() { |
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for(int i=0;i<files.size();i++) |
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if(((GeoRasterFile)files.get(i)) != null) |
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return ((GeoRasterFile)files.get(i)).getHeight();
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return 0; |
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} |
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/**
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* Obtiene la anchura de la imagen a partir de la primera
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* @return anchura
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*/
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public int getWidth() { |
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for(int i=0;i<files.size();i++) |
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if(((GeoRasterFile)files.get(i)) != null) |
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return ((GeoRasterFile)files.get(i)).getWidth();
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return 0; } |
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/**
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* Obtiene el n?mero de bandas del fichero
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* @return
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*/
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public int getBandCount(){ |
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return bandList.getBandCount();
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} |
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/**
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* Obtiene el tipo de dato por banda
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* @return tipo de dato por banda
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*/
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public int[] getDataType() { |
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int[] dt = new int[getFileCount()]; |
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for(int i=0;i<files.size();i++) |
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dt[i] = ((GeoRasterFile)files.get(i)).getDataType(); |
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if(dt.length == 0) |
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return null; |
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else
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return dt;
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} |
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/**
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* Obtiene fichero de la posici?n i.
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* @param i Posici?n del fichero a obtener.
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* @return GeoRasterFileDataset.
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*/
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public GeoRasterFile getFile(int i){ |
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return (GeoRasterFile)files.get(i);
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} |
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/**
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* Obtiene fichero de nombre fileName.
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* @param i Posici?n del fichero a obtener.
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* @return GeoRasterFile.
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*/
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public GeoRasterFile getFile(String fileName){ |
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for(int i=0;i<files.size();i++){ |
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if(((GeoRasterFile)files.get(i)).getName().equals(fileName))
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return (GeoRasterFile)files.get(i);
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} |
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return null; |
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} |
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/**
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* Asigna el nombre al GeoRasterMultiFile
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* @param name Nombre del GeoRasterMultiFile
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*/
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public void setName(String name){ |
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this.name = name;
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} |
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/**
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* Obtiene la lista de bandas
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* @return BandList
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*/
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public BandList getBands(){
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return bandList;
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} |
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/**
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* Obtiene la coordenada X m?nima de toda la lista
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* @return Coordenada X m?nima
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*/
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public double getMinX(){ |
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double minx = Double.MAX_VALUE; |
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for(int i = 0; i < files.size(); i++){ |
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double aux = ((GeoRasterFile)files.get(i)).getExtent().getMin().getX();
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if(aux < minx)
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minx = aux; |
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} |
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return minx;
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} |
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/**
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* Obtiene la coordenada Y m?nima de toda la lista
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* @return Coordenada Y m?nima
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*/
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public double getMinY(){ |
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double miny = Double.MAX_VALUE; |
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for(int i = 0; i < files.size(); i++){ |
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double aux = ((GeoRasterFile)files.get(i)).getExtent().getMin().getY();
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if(aux < miny)
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miny = aux; |
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} |
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return miny;
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} |
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|
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/**
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* Obtiene la coordenada Y m?xima de toda la lista
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* @return Coordenada Y m?xima
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*/
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public double getMaxX(){ |
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double maxx = Double.MIN_VALUE; |
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for(int i = 0; i < files.size(); i++){ |
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double aux = ((GeoRasterFile)files.get(i)).getExtent().getMin().getY();
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if(aux > maxx)
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maxx = aux; |
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} |
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return maxx;
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} |
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|
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/**
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* Obtiene la coordenada Y m?xima de toda la lista
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* @return Coordenada Y m?xima
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*/
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public double getMaxY(){ |
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double maxy = Double.MIN_VALUE; |
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for(int i = 0; i < files.size(); i++){ |
| 446 |
double aux = ((GeoRasterFile)files.get(i)).getExtent().getMin().getY();
|
| 447 |
if(aux > maxy)
|
| 448 |
maxy = aux; |
| 449 |
} |
| 450 |
return maxy;
|
| 451 |
} |
| 452 |
|
| 453 |
/**
|
| 454 |
* Obtiene el extent del multi fichero. Este corresponde al primer
|
| 455 |
* GeoRasterFile de la lista.
|
| 456 |
* @return Extent
|
| 457 |
*/
|
| 458 |
public Extent getExtent(){
|
| 459 |
if(files.size() == 0) |
| 460 |
return null; |
| 461 |
else
|
| 462 |
return ((GeoRasterFile)files.get(0)).getExtent(); |
| 463 |
} |
| 464 |
|
| 465 |
/**
|
| 466 |
* Convierte un punto desde coordenadas pixel a coordenadas del mundo.
|
| 467 |
* @param pt Punto a transformar
|
| 468 |
* @return punto transformado en coordenadas del mundo
|
| 469 |
*/
|
| 470 |
public Point2D rasterToWorld(Point2D pt) { |
| 471 |
return ((GeoRasterFile)files.get(0)).rasterToWorld(pt); |
| 472 |
} |
| 473 |
|
| 474 |
/**
|
| 475 |
* Convierte un punto desde del mundo a coordenadas pixel.
|
| 476 |
* @param pt Punto a transformar
|
| 477 |
* @return punto transformado en coordenadas pixel
|
| 478 |
*/
|
| 479 |
public Point2D worldToRaster(Point2D pt) { |
| 480 |
return ((GeoRasterFile)files.get(0)).worldToRaster(pt); |
| 481 |
} |
| 482 |
} |