root / trunk / libraries / libRaster / src / org / gvsig / raster / dataaccess / DataSource.java @ 11067
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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.gvsig.raster.dataaccess; |
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import java.awt.geom.Point2D; |
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import org.gvsig.raster.dataaccess.buffer.RasterBuffer; |
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import org.gvsig.raster.dataset.FileFoundInListException; |
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import org.gvsig.raster.dataset.IBuffer; |
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import org.gvsig.raster.dataset.NotSupportedExtensionException; |
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import org.gvsig.raster.dataset.RasterDataset; |
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import org.gvsig.raster.dataset.RasterDriverException; |
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import org.gvsig.raster.dataset.RasterMultiDataset; |
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import org.gvsig.raster.dataset.properties.DatasetPalette; |
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import org.gvsig.raster.shared.Extent; |
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import org.gvsig.raster.util.RasterUtilities; |
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/**
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* <P>
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* Clase que representa a una rejilla de datos que tiene como fuente
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* un RasterMultifile. Tiene m?todos para a?adir nuevos ficheros fuente a la
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* rejilla que podr?n ser consultados como bandas de uno solo. Estos deber?an tener
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* la misma extensi?n que el primero introducido.
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* </P>
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* <P>
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* Para la carga del buffer de datos habr? que asigna las bandas que queremos cargar
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* de todas las disponibles con addDrawableBands. Despu?s se seleccionar? el ?rea
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* que queremos cargar con setAreaOfInterest. Este ?rea se define con coordenadas
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* pixel o reales. Finalmente podemos recuperar el buffer con los datos usando la
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* funci?n getRasterBuf.
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* </P>
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* @author Nacho Brodin (nachobrodin@gmail.com)
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*
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*/
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public class DataSource implements IQueryableRaster, IWritableRaster { |
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private RasterMultiDataset grmf = new RasterMultiDataset(null); |
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private IBuffer rasterBuf = null; |
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private int width = 0; |
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private int height = 0; |
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private int[] drawableBands = null; |
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/**
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* Extensi?n de los datos del buffer
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*/
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private Extent dataExtent = null; |
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/**
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* Lista de paletas asociadas a las bandas cargadas en el DataSource. Estas son calculadas
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* en las funciones que asignan las bandas a dibujar (addDrawableBands)
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*/
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private DatasetPalette[] palette = null; |
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/**
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* Activa o desactiva el supersampleo en la carga del buffer.
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*/
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private boolean supersamplingLoadingBuffer = true; |
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/**
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* Ancho y alto en pixeles del ?ltimo buffer asignado
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*/
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private double nWidth = 0; |
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private double nHeight = 0; |
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/**
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* Constructor
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*/
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public DataSource(){} |
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/**
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* Constructor
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* @param grf Lista de geoRasterFile
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*/
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public DataSource(RasterDataset[] grf){ |
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for(int i = 0; i< grf.length; i++) |
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addFile(grf[i]); |
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} |
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/**
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* Constructor
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* @param grf GeoRasterFile
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*/
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public DataSource(RasterDataset grf){ |
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addFile(grf); |
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} |
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/**
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* A?ade un GeoRasterFile al Grid
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* @param grf GeoRasterFile a a?adir
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*/
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public void addFile(RasterDataset grf){ |
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try{
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grmf.addDataset(grf); |
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width = grf.getWidth(); |
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height = grf.getHeight(); |
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}catch(FileFoundInListException e){
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//El fichero est? en la lista por lo que no lo a?adimos
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} |
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} |
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/**
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* A?ade un GeoRasterFile al Grid
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* @param fileName Nombre del fichero a a?adir
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* @throws NotSupportedExtensionException
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* @throws RasterDriverException
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*/
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public void addFile(String filename) throws NotSupportedExtensionException, RasterDriverException{ |
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try{
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grmf.addDataset(filename); |
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width = (int)grmf.getWidth()[0]; |
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height = (int)grmf.getHeight()[0]; |
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}catch(FileFoundInListException e){
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//El fichero est? en la lista por lo que no lo a?adimos
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} |
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} |
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/**
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* Elimina un GeoRasterFile del Grid
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* @param grf GeoRasterFile a eliminar
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*/
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public void removeFile(RasterDataset grf){ |
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grmf.removeDataset(grf); |
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} |
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/**
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* Elimina un GeoRasterFile del Grid
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* @param fileName Nombre del fichero a eliminar su GeoRasterFile
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*/
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public void removeFile(String fileName){ |
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grmf.removeDataset(fileName); |
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} |
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/**
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* Obtiene el n?mero de ficheros del que est? compuesta la fuente de datos.
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* @return
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*/
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public int getFileCount(){ |
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return grmf.getDatasetCount();
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.dataaccess.IQueryableRaster#getGeoRasterMultiFile()
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*/
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public RasterMultiDataset getGeoRasterMultiFile(){
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return grmf;
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} |
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/**
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* Libera el buffer de memoria
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*/
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public void free(){ |
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rasterBuf = null;
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System.gc();
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} |
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/**
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* Resetea la asignaci?n de dibujado de las bandas de la imagen
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* sobre el DataImage cuando se hace un update para esta banda.
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*/
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public void clearDrawableBand(){ |
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for(int i = 0; i< grmf.getDatasetCount(); i++) |
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grmf.getBands().clearDrawableBand(); |
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palette = null;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.dataaccess.IQueryableRaster#addDrawableBands(int[])
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*/
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public int[] addDrawableBands(int[] drawableBands){ |
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this.drawableBands = drawableBands;
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grmf.getBands().setDrawableArray(drawableBands); |
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int[] files = new int[drawableBands.length]; |
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palette = new DatasetPalette[drawableBands.length];
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for(int i = 0; i< drawableBands.length; i++){ |
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if(drawableBands[i] < 0 || drawableBands[i] >= grmf.getBandCount()) |
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continue;
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grmf.getBands().addDrawableBand(i, drawableBands[i]); |
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String fileName = grmf.getBands().getBand(drawableBands[i]).getFileName();
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files[i] = grmf.getBands().getFileNumber(fileName); |
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palette[i] = grmf.getPalette(fileName); |
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} |
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return files;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.dataaccess.IQueryableRaster#setAllDrawableBands()
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*/
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public int[] setAllDrawableBands(){ |
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clearDrawableBand(); |
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drawableBands = new int[grmf.getBandCount()]; |
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int[] files = new int[drawableBands.length]; |
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palette = new DatasetPalette[drawableBands.length];
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for(int i = 0; i< grmf.getBandCount(); i++){ |
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grmf.getBands().addDrawableBand(i, i); |
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this.drawableBands[i] = i;
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String fileName = grmf.getBands().getBand(drawableBands[i]).getFileName();
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files[i] = grmf.getBands().getFileNumber(fileName); |
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palette[i] = grmf.getPalette(fileName); |
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} |
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return files;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.dataaccess.IQueryableRaster#getDrawableBands()
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*/
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public int[] getDrawableBands() { |
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return drawableBands;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.dataaccess.IQueryableRaster#setAreaOfInterest(double, double, double, double)
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*/
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public void setAreaOfInterest(double x, double y, double w, double h, boolean adjustToExtent) throws ArrayIndexOutOfBoundsException{ |
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dataExtent = new Extent(x, y, x + w, y - h);
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if(adjustToExtent){
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Extent adjustedDataExtent = RasterUtilities.calculateAdjustedView(dataExtent, grmf.getExtent()); |
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double newW = w;
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double newH = h;
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if(!RasterUtilities.compareExtents(dataExtent, adjustedDataExtent)){
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//Si el extent ha sido ajustado entonces tenemos que variar tambi?n al ancho y el alto de la petici?n
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newW = (adjustedDataExtent.width() * w) / dataExtent.width(); |
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newH = (adjustedDataExtent.height() * h) / dataExtent.height(); |
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} |
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rasterBuf = grmf.getWindowRaster(adjustedDataExtent.getMin().getX(), adjustedDataExtent.getMax().getY(), newW, newH, adjustToExtent); |
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}else
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rasterBuf = grmf.getWindowRaster(dataExtent.getMin().getX(), dataExtent.getMax().getY(), w, h, adjustToExtent); |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.dataaccess.IQueryableRaster#setAreaOfInterest(double, double, double, double, int, int)
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*/
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public int[] setAreaOfInterest(double minX, double minY, double maxX, double maxY, int bufWidth, int bufHeight, boolean adjustToExtent) throws ArrayIndexOutOfBoundsException{ |
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//TODO: VALIDACI?N: Comprobaci?n de exceso de memoria reservada
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dataExtent = new Extent(minX, minY, maxX, maxY);
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Extent adjustedDataExtent = new Extent(dataExtent);
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if(adjustToExtent)
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adjustedDataExtent = RasterUtilities.calculateAdjustedView(dataExtent, grmf.getExtent()); |
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minX = adjustedDataExtent.getMin().getX(); |
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minY = adjustedDataExtent.getMin().getY(); |
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maxX = adjustedDataExtent.getMax().getX(); |
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maxY = adjustedDataExtent.getMax().getY(); |
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//Esta secci?n es para que no supersamplee el driver y pueda hacerse en el cliente
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if(!isSupersamplingLoadingBuffer()){
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nWidth = ((adjustedDataExtent.width() * grmf.getDataset(0).getWidth()) / grmf.getDataset(0).getExtent().width()); |
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nHeight = ((adjustedDataExtent.height() * grmf.getDataset(0).getHeight()) / grmf.getDataset(0).getExtent().height()); |
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if(bufWidth > Math.ceil(nWidth) && bufHeight > Math.ceil(nHeight)){ |
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rasterBuf = grmf.getWindowRaster(minX, maxY, Math.abs(maxX - minX), Math.abs(maxY - minY), adjustToExtent); |
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int[] step = grmf.calcSteps(minX, maxY, maxX, minY, nWidth, nHeight, bufWidth, bufHeight); |
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return step;
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} |
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} |
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rasterBuf = grmf.getWindowRaster(minX, minY, maxX, maxY, bufWidth, bufHeight, adjustToExtent); |
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return null; |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.dataaccess.IQueryableRaster#setAreaOfInterest(int, int, int, int)
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*/
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public void setAreaOfInterest(int x, int y, int w, int h) throws ArrayIndexOutOfBoundsException{ |
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if((x + w) > getWidth() || (y + h) > getHeight())
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throw new ArrayIndexOutOfBoundsException("Out of Image"); |
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dataExtent = new Extent(grmf.rasterToWorld(new Point2D.Double(x, y)), |
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grmf.rasterToWorld(new Point2D.Double(x + w, y + h))); |
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rasterBuf = grmf.getWindowRaster(x, y, w, h); |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.dataaccess.IQueryableRaster#setAreaOfInterest()
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*/
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public void setAreaOfInterest(){ |
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dataExtent = grmf.getExtent(); |
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rasterBuf = grmf.getWindowRaster(0, 0, (int)grmf.getWidth()[0], (int)grmf.getHeight()[0]); |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.dataaccess.IQueryableRaster#setAreaOfInterest(int, int, int, int, int, int)
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*/
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public void setAreaOfInterest(int x, int y, int w, int h, int bufWidth, int bufHeight) throws ArrayIndexOutOfBoundsException{ |
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//TODO: VALIDACI?N: Comprobaci?n de exceso de memoria reservada
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if(x < 0 || y < 0 || (x + w) > getWidth() || (y + h) > getHeight()) |
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throw new ArrayIndexOutOfBoundsException("Out of Image"); |
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dataExtent = new Extent(grmf.rasterToWorld(new Point2D.Double(x, y)), |
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grmf.rasterToWorld(new Point2D.Double(x + w, y + h))); |
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rasterBuf = grmf.getWindowRaster(x, y, w, h, bufWidth, bufHeight); |
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} |
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/**
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* Ajusta el ?rea del grid a un ancho y un alto dado en pixeles. Este ajuste se har?
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* en relaci?n a un m?todo de interpolaci?n definido en el par?metro.
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* @param w Ancho de la nueva imagen.
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* @param h Alto de la nueva imagen.
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* @param interpolation M?todo de interpolaci?n que se usar? en el ajuste.
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* @param bands Bandas que se desea en el nuevo RasterBuf ajustado. Si este par?metro es null
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* se usar?n todas las bandas de la imagen.
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*/
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public void setAdjustedWindow(int w, int h, int interpolationMethod, int[] bands){ |
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if(w == width && h == height)
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return;
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switch(interpolationMethod){
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case IQueryableRaster.INTERPOLATION_NearestNeighbour:
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rasterBuf = ((RasterBuffer)rasterBuf).adjustRasterNearestNeighbourInterpolation(w, h, bands); |
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break;
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case IQueryableRaster.INTERPOLATION_Bilinear:
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System.out.println("Method not implemented yet"); |
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break;
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case IQueryableRaster.INTERPOLATION_InverseDistance:
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System.out.println("Method not implemented yet"); |
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break;
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case IQueryableRaster.INTERPOLATION_BicubicSpline:
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System.out.println("Method not implemented yet"); |
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break;
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case IQueryableRaster.INTERPOLATION_BSpline:
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System.out.println("Method not implemented yet"); |
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break;
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} |
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//width = rasterBuf.getWidth();
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//height = rasterBuf.getHeight();
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} |
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/**
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* Obtiene el tipo de datos del grid.
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* @return entero que representa el tipo de dato de las celdas del grid.
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*/
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public int getDataType() { |
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return grmf.getDataType()[0]; |
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} |
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/**
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* Obtiene la altura del grid.
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* @return altura en celdas del grid.
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*/
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public int getHeight() { |
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return height;
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} |
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/**
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* Obtiene la anchura del grid.
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* @return anchura en celdas del grid.
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*/
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public int getWidth() { |
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return width;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.dataaccess.IQueryableRaster#getXCellSize()
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*/
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public double getXCellSize() { |
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Extent e = grmf.getExtent(); |
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double dCellsize = (e.getMax().getX() - e.getMin().getX() ) / (double) width; |
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return dCellsize;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.dataaccess.IQueryableRaster#getYCellSize()
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*/
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public double getYCellSize() { |
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return 0; |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.dataaccess.IQueryableRaster#isNoData(int, int, int)
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*/
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public boolean isNoData(int x, int y, int band) { |
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return false; |
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} |
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public void setNoDataValue(double dNoDataValue){ |
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if(rasterBuf instanceof RasterBuffer) |
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((RasterBuffer)rasterBuf).setNoDataValue(dNoDataValue); |
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} |
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public double getNoDataValue(){ |
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if(rasterBuf instanceof RasterBuffer) |
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return ((RasterBuffer)rasterBuf).getNoDataValue();
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return 0D; |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.dataaccess.IQueryableRaster#setDataType(int)
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*/
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public void setDataType(int dt) { |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.dataaccess.IQueryableRaster#getBandCount()
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*/
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public int getBandCount(){ |
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if(rasterBuf != null) |
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return rasterBuf.getBandCount();
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else
|
| 434 |
return this.getGeoRasterMultiFile().getBandCount(); |
| 435 |
} |
| 436 |
|
| 437 |
/**
|
| 438 |
* Obtiene el buffer de datos del grid
|
| 439 |
* @return RasterBuf
|
| 440 |
*/
|
| 441 |
public IBuffer getRasterBuf() {
|
| 442 |
return rasterBuf;
|
| 443 |
} |
| 444 |
|
| 445 |
/**
|
| 446 |
* Evalua si una coordenada pixel cae dentro de la imagen.
|
| 447 |
* @param x coordenada pixel X
|
| 448 |
* @param y coordenada pixel Y
|
| 449 |
*/
|
| 450 |
public boolean isPixelInGrid(int x, int y){ |
| 451 |
return (x >= 0 && y >= 0 && x <= getWidth() && y <= getHeight()); |
| 452 |
} |
| 453 |
|
| 454 |
/**
|
| 455 |
* Extent de todo el raster asociado a la fuente de datos.
|
| 456 |
*/
|
| 457 |
public Extent getExtent(){
|
| 458 |
return grmf.getExtent();
|
| 459 |
} |
| 460 |
|
| 461 |
/*
|
| 462 |
* (non-Javadoc)
|
| 463 |
* @see org.gvsig.fmap.dataaccess.IQueryableRaster#getData(int, int, int, int)
|
| 464 |
*/
|
| 465 |
public RasterBuffer getData(int x, int y, int w, int h) { |
| 466 |
return null; |
| 467 |
} |
| 468 |
|
| 469 |
/*
|
| 470 |
* (non-Javadoc)
|
| 471 |
* @see org.gvsig.fmap.dataaccess.IQueryableRaster#getCoordsGeoTransformFile()
|
| 472 |
*/
|
| 473 |
public double[] getCoordsGeoTransformFile() { |
| 474 |
return grmf.getCoordsGeoTransformFile();
|
| 475 |
} |
| 476 |
|
| 477 |
/*
|
| 478 |
* (non-Javadoc)
|
| 479 |
* @see org.gvsig.fmap.dataaccess.IQueryableRaster#getLastSelectedView()
|
| 480 |
*/
|
| 481 |
public Extent getLastSelectedView(){
|
| 482 |
return grmf.getLastSelectedView();
|
| 483 |
} |
| 484 |
|
| 485 |
/**
|
| 486 |
* Obtiene el extent correspondiente a los datos cargados en el buffer
|
| 487 |
* @return Extent
|
| 488 |
*/
|
| 489 |
public Extent getDataExtent() {
|
| 490 |
return dataExtent;
|
| 491 |
} |
| 492 |
|
| 493 |
/*
|
| 494 |
* (non-Javadoc)
|
| 495 |
* @see org.gvsig.fmap.dataaccess.IQueryableRaster#getPalettes()
|
| 496 |
*/
|
| 497 |
public DatasetPalette[] getPalettes(){ |
| 498 |
return palette;
|
| 499 |
} |
| 500 |
|
| 501 |
/**
|
| 502 |
* Obtiene el flag que dice si la imagen est? o no georreferenciada
|
| 503 |
* @return true si est? georreferenciada y false si no lo est?.
|
| 504 |
*/
|
| 505 |
public boolean isGeoreferenced() { |
| 506 |
return grmf.isGeoreferenced();
|
| 507 |
} |
| 508 |
|
| 509 |
/**
|
| 510 |
* Consulta el flag de supersampleo en la carga del buffer.
|
| 511 |
* <P>
|
| 512 |
* Si este flag es false
|
| 513 |
* y pasamos un buffer de tama?o mayor que el n?mero de pixels del ?rea requerida en la
|
| 514 |
* llamada setAreaOfInterest entonces se ajustar? este buffer al n?mero de pixeles contenidos
|
| 515 |
* en el ?rea.
|
| 516 |
* </P>
|
| 517 |
* <P>
|
| 518 |
* Por ejemplo, si solicitamos un ?rea de 5x4 pixels de un raster y pedimos que nos los grabe
|
| 519 |
* en un buffer de 500x400, si esta variable es false el buffer lo generar? de 5x4. Si esta
|
| 520 |
* variable es true el buffer lo generar? de 500x400.
|
| 521 |
* </P>
|
| 522 |
*
|
| 523 |
* @return true si el supersampleo en la carga del buffer est? activado y false si no lo est?.
|
| 524 |
*/
|
| 525 |
public boolean isSupersamplingLoadingBuffer() { |
| 526 |
return supersamplingLoadingBuffer;
|
| 527 |
} |
| 528 |
|
| 529 |
/**
|
| 530 |
* Activa o desactiva el supersampling en la carga del buffer.
|
| 531 |
* <P>
|
| 532 |
* Si este flag es false
|
| 533 |
* y pasamos un buffer de tama?o mayor que el n?mero de pixels del ?rea requerida en la
|
| 534 |
* llamada setAreaOfInterest entonces se ajustar? este buffer al n?mero de pixeles contenidos
|
| 535 |
* en el ?rea.
|
| 536 |
* </P>
|
| 537 |
* <P>
|
| 538 |
* Por ejemplo, si solicitamos un ?rea de 5x4 pixels de un raster y pedimos que nos los grabe
|
| 539 |
* en un buffer de 500x400, si esta variable es false el buffer lo generar? de 5x4. Si esta
|
| 540 |
* variable es true el buffer lo generar? de 500x400.
|
| 541 |
* </P>
|
| 542 |
*
|
| 543 |
* @param supersamplingLoadingBuffer true o false para activar o desactivar el supersampling en la
|
| 544 |
* carga del buffer.
|
| 545 |
*/
|
| 546 |
public void setSupersamplingLoadingBuffer(boolean supersamplingLoadingBuffer) { |
| 547 |
this.supersamplingLoadingBuffer = supersamplingLoadingBuffer;
|
| 548 |
} |
| 549 |
|
| 550 |
public double getNHeight() { |
| 551 |
return nHeight;
|
| 552 |
} |
| 553 |
|
| 554 |
public double getNWidth() { |
| 555 |
return nWidth;
|
| 556 |
} |
| 557 |
|
| 558 |
} |
| 559 |
|