root / trunk / libraries / libRaster / src / org / gvsig / raster / dataset / io / GdalNative.java @ 18040
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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.dataset.io; |
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import java.awt.geom.AffineTransform; |
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import java.awt.geom.NoninvertibleTransformException; |
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import java.awt.geom.Point2D; |
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import java.io.IOException; |
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import org.gvsig.raster.RasterLibrary; |
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import org.gvsig.raster.dataset.BandList; |
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import org.gvsig.raster.dataset.IBuffer; |
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import org.gvsig.raster.dataset.properties.DatasetColorInterpretation; |
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import org.gvsig.raster.dataset.properties.DatasetMetadata; |
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import org.gvsig.raster.datastruct.ColorTable; |
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import org.gvsig.raster.datastruct.Extent; |
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import org.gvsig.raster.datastruct.Transparency; |
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import org.gvsig.raster.process.RasterTask; |
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import org.gvsig.raster.process.RasterTaskQueue; |
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import org.gvsig.raster.util.RasterUtilities; |
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import es.gva.cit.jgdal.Gdal; |
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import es.gva.cit.jgdal.GdalBuffer; |
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import es.gva.cit.jgdal.GdalException; |
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import es.gva.cit.jgdal.GdalRasterBand; |
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import es.gva.cit.jgdal.GeoTransform; |
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/**
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* Soporte 'nativo' para ficheros desde GDAL.
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*
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* @author Luis W. Sevilla (sevilla_lui@gva.es)
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* @author Nacho Brodin (nachobrodin@gmail.com)
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*/
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public class GdalNative extends Gdal { |
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static boolean WITH_OVERVIEWS = true; |
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private String ext = ""; |
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private String fileName = null; |
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/**
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* Nombre corto del driver de gdal
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*/
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private String shortName = ""; |
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public GeoTransform trans = null; |
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public int width = 0, height = 0; |
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public double originX = 0D, originY = 0D; |
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public String version = ""; |
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protected int rBandNr = 1, gBandNr = 2, bBandNr = 3, aBandNr = 4; |
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private int[] dataType = null; |
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/**
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* Metadatos leidos de la imagen
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*/
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protected DatasetMetadata metadata = null; |
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protected boolean georeferenced = true; |
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/**
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* Vectores que contiene los desplazamientos de un pixel cuando hay supersampling.
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* , es decir el n?mero de pixels de pantalla que tiene un pixel de imagen. Como todos
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* los pixeles no tienen el mismo ancho y alto ha de meterse en un array y no puede ser
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* una variable. Adem?s hay que tener en cuenta que el primer y ?ltimo pixel son de
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* distinto tama?o que el resto.
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*/
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public int[] stepArrayX = null, stepArrayY = null; |
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protected GdalRasterBand[] gdalBands = null; |
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private double lastReadLine = -1; |
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private int currentFullWidth = -1; |
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private int currentFullHeight = -1; |
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private int currentViewWidth = -1; |
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private int currentViewHeight = -1; |
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private double currentViewX = 0D; |
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private double viewportScaleX = 0D; |
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private double viewportScaleY = 0D; |
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//private double wcWidth = 0D;
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private double stepX = 0D; |
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private double stepY = 0D; |
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public boolean isSupersampling = false; |
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/**
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* Estado de transparencia del raster.
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*/
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protected Transparency fileTransparency = null; |
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protected ColorTable palette = null; |
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protected DatasetColorInterpretation colorInterpr = null; |
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protected AffineTransform ownTransformation = null; |
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protected AffineTransform externalTransformation = new AffineTransform(); |
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/**
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* Overview usada en el ?ltimo setView
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*/
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int currentOverview = -1; |
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public GdalNative(String fName) throws GdalException, IOException { |
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super();
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init(fName); |
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} |
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private void init(String fName) throws GdalException, IOException { |
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fileName = fName; |
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open(fName, GA_ReadOnly); |
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ext = RasterUtilities.getExtensionFromFileName(fName); |
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if (ext != null && ext.compareTo("tif") == 0) |
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WITH_OVERVIEWS = false;
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width = getRasterXSize(); |
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height = getRasterYSize(); |
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int[] dt = new int[getRasterCount()]; |
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for (int i = 0; i < getRasterCount(); i++) |
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dt[i] = this.getRasterBand(i + 1).getRasterDataType(); |
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setDataType(dt); |
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shortName = getDriverShortName(); |
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fileTransparency = new Transparency(); |
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colorInterpr = new DatasetColorInterpretation();
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metadata = new DatasetMetadata(getMetadata(), colorInterpr);
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// Asignamos la interpretaci?n de color leida por gdal a cada banda. Esto
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// nos sirve para saber que banda de la imagen va asignada a cada banda de
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// visualizaci?n (ARGB)
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colorInterpr.initColorInterpretation(getRasterCount()); |
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metadata.initNoDataByBand(getRasterCount()); |
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for (int i = 0; i < getRasterCount(); i++) { |
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GdalRasterBand rb = getRasterBand(i + 1);
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String colorInt = getColorInterpretationName(rb.getRasterColorInterpretation());
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metadata.setNoDataValue(i, rb.getRasterNoDataValue()); |
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colorInterpr.setColorInterpValue(i, colorInt); |
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if (colorInt.equals("Alpha")) |
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fileTransparency.setTransparencyBand(i); |
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if (rb.getRasterColorTable() != null && palette == null) { |
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palette = new ColorTable();
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palette.createPaletteFromGdalColorTable(rb.getRasterColorTable()); |
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//fileTransparency.setTransparencyRangeList(palette.getTransparencyRange());
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} |
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} |
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fileTransparency.setTransparencyByPixelFromMetadata(metadata); |
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try {
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trans = getGeoTransform(); |
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boolean isCorrect = false; |
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for (int i = 0; i < trans.adfgeotransform.length; i++) |
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if (trans.adfgeotransform[i] != 0) |
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isCorrect = true;
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if (!isCorrect)
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throw new GdalException(""); |
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ownTransformation = new AffineTransform(trans.adfgeotransform[1], trans.adfgeotransform[4], trans.adfgeotransform[2], trans.adfgeotransform[5], trans.adfgeotransform[0], trans.adfgeotransform[3]); |
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externalTransformation = (AffineTransform) ownTransformation.clone();
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currentFullWidth = width; |
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currentFullHeight = height; |
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this.georeferenced = true; |
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} catch (GdalException exc) {
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// Transformaci?n para ficheros sin georreferenciaci?n. Se invierte la Y
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// ya que las WC decrecen de
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// arriba a abajo y los pixeles crecen de arriba a abajo
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ownTransformation = new AffineTransform(1, 0, 0, -1, 0, height); |
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externalTransformation = (AffineTransform) ownTransformation.clone();
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currentFullWidth = width; |
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currentFullHeight = height; |
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this.georeferenced = false; |
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} |
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} |
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/**
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* Devuelve el valor NoData en caso de existir, sino existe devuelve null.
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* @return
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*/
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public double getNoDataValue() { |
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if (metadata == null) |
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return RasterLibrary.defaultNoDataValue;
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if (metadata.getNoDataValue().length == 0) |
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return RasterLibrary.defaultNoDataValue;
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return metadata.getNoDataValue()[0]; |
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} |
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/**
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* Asigna el tipo de dato
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* @param dt entero que representa el tipo de dato
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*/
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public void setDataType(int[] dt) { |
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dataType = dt; |
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} |
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/**
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* Obtiene el tipo de dato
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* @return entero que representa el tipo de dato
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*/
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public int[] getDataType() { |
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return dataType;
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} |
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/**
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* Obtiene un punto 2D con las coordenadas del raster a partir de uno en coordenadas
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* del punto real.
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* Supone rasters no girados
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* @param pt punto en coordenadas del punto real
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* @return punto en coordenadas del raster
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*/
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public Point2D worldToRasterWithoutRot(Point2D pt) { |
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Point2D p = new Point2D.Double(); |
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AffineTransform at = new AffineTransform( externalTransformation.getScaleX(), 0, |
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0, externalTransformation.getScaleY(),
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externalTransformation.getTranslateX(), externalTransformation.getTranslateY()); |
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try {
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at.inverseTransform(pt, p); |
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} catch (NoninvertibleTransformException e) { |
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return pt;
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} |
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return p;
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} |
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/**
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* Obtiene un punto 2D con las coordenadas del raster a partir de uno en coordenadas
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* del punto real.
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* Supone rasters no girados
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* @param pt punto en coordenadas del punto real
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* @return punto en coordenadas del raster
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*/
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public Point2D worldToRaster(Point2D pt) { |
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Point2D p = new Point2D.Double(); |
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try {
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externalTransformation.inverseTransform(pt, p); |
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} catch (NoninvertibleTransformException e) { |
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return pt;
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} |
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return p;
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} |
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/**
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* Obtiene un punto del raster en coordenadas pixel a partir de un punto en coordenadas
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* reales.
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* @param pt Punto en coordenadas reales
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* @return Punto en coordenadas pixel.
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*/
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public Point2D rasterToWorld(Point2D pt) { |
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Point2D p = new Point2D.Double(); |
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externalTransformation.transform(pt, p); |
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return p;
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} |
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/**
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* Calcula el overview a usar. Hay que tener en cuenta que tenemos que tener calculadas las variables
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* viewPortScale, currentFullWidth y currentFulHeight
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* @param coordenada pixel expresada en double que indica la posici?n superior izquierda
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* @throws GdalException
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*/
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private void calcOverview(Point2D tl, Point2D br) throws GdalException{ |
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gdalBands[0] = getRasterBand(1); |
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currentOverview = -1;
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if (WITH_OVERVIEWS && gdalBands[0].getOverviewCount() > 0) { |
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GdalRasterBand ovb = null;
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for (int i = gdalBands[0].getOverviewCount()-1; i > 0; i--) { |
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ovb = gdalBands[0].getOverview(i);
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if (ovb.getRasterBandXSize() > getRasterXSize() * viewportScaleX) {
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currentOverview = i; |
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viewportScaleX *= ((double) width/(double) ovb.getRasterBandXSize()); |
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viewportScaleY *= ((double) height/(double) ovb.getRasterBandYSize()); |
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stepX = 1D/viewportScaleX;
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stepY = 1D/viewportScaleY;
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currentFullWidth = ovb.getRasterBandXSize(); |
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currentFullHeight = ovb.getRasterBandYSize(); |
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currentViewX = Math.min(tl.getX(), br.getX());
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lastReadLine = Math.min(tl.getY(), br.getY());
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break;
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} |
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} |
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} |
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} |
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public void setView(double dWorldTLX, double dWorldTLY, |
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double dWorldBRX, double dWorldBRY, |
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int nWidth, int nHeight) throws GdalException { |
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currentFullWidth = width; |
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currentFullHeight = height; |
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Point2D tl = worldToRaster(new Point2D.Double(dWorldTLX, dWorldTLY)); |
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Point2D br = worldToRaster(new Point2D.Double(dWorldBRX, dWorldBRY)); |
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// Calcula cual es la primera l?nea a leer;
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currentViewWidth = nWidth; |
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currentViewHeight = nHeight; |
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//wcWidth = Math.abs(br.getX() - tl.getX());
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currentViewX = Math.min(tl.getX(), br.getX());
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viewportScaleX = (double) currentViewWidth/(br.getX()-tl.getX());
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viewportScaleY = (double) currentViewHeight/(br.getY()-tl.getY());
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stepX = 1D/viewportScaleX;
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stepY = 1D/viewportScaleY;
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lastReadLine = Math.min(tl.getY(), br.getY());
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//Para lectura del renderizado (ARGB). readWindow selecciona las bandas que necesita.
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// calcula el overview a usar
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gdalBands = new GdalRasterBand[4]; |
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calcOverview(tl, br); |
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// Selecciona las bandas y los overviews necesarios
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/*gdalBands[0] = getRasterBand(rBandNr);
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gdalBands[1] = gdalBands[0];
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gdalBands[2] = gdalBands[1];
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if(getRasterCount() >= 2) {
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gdalBands[1] = getRasterBand(gBandNr);
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gdalBands[2] = gdalBands[1];
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}
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if(this.getRasterCount() >= 3)
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gdalBands[2] = getRasterBand(bBandNr);
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if(colorInterpr.isAlphaBand())
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gdalBands[3] = getRasterBand(aBandNr);
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assignDataTypeFromGdalRasterBands(gdalBands);
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if (currentOverview > 0) {
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gdalBands[0] = gdalBands[0].getOverview(currentOverview);
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if(getRasterCount() >= 2) {
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gdalBands[1] = gdalBands[1].getOverview(currentOverview);
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}
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if(this.getRasterCount() >= 3)
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gdalBands[2] = gdalBands[2].getOverview(currentOverview);
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if(colorInterpr.isAlphaBand())
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gdalBands[3] = gdalBands[3].getOverview(currentOverview);
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}*/
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} |
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/**
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* Selecciona bandas y overview en el objeto GdalRasterBand[] para el n?mero de bandas solicitado.
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* @param nbands N?mero de bandas solicitado.
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* @throws GdalException
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*/
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public void selectGdalBands(int nbands)throws GdalException{ |
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gdalBands = new GdalRasterBand[nbands];
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//Selecciona las bandas y los overviews necesarios
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gdalBands[0] = getRasterBand(1); |
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for(int i = 0; i < nbands; i++) |
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gdalBands[i] = gdalBands[0];
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assignDataTypeFromGdalRasterBands(gdalBands); |
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//setDataType(gdalBands[0].getRasterDataType());
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for(int i = 2; i <= nbands; i++){ |
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if(getRasterCount() >= i){
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gdalBands[i - 1] = getRasterBand(i);
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for(int j = i; j < nbands; j++) |
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gdalBands[j] = gdalBands[i - 1];
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} |
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} |
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if (currentOverview > 0) { |
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gdalBands[0] = gdalBands[0].getOverview(currentOverview); |
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for(int i = 2; i <= nbands; i++){ |
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if(getRasterCount() >= i)
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gdalBands[i - 1] = gdalBands[i - 1].getOverview(currentOverview); |
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} |
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} |
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} |
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int lastY = -1; |
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/**
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* Lee una l?nea de bytes
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* @param line Buffer donde se cargan los datos
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* @param initOffset Desplazamiento inicial desde el margen inzquierdo. Esto es necesario para cuando
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* se supersamplea ya que cada pixel de imagen ocupa muchos pixeles de pantalla y puede empezar a dibujarse
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* por la izquierda a mitad de pixel
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* @param gdalBuffer Buffer con la l?nea de datos original
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*/
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private void readLine(byte[][] line, double initOffset, GdalBuffer[] gdalBuffer){ |
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double j = 0D; |
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int i = 0; |
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for (int iBand = 0; iBand < gdalBuffer.length; iBand++){ |
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for (i = 0, j = initOffset; i < currentViewWidth && j < gdalBuffer[0].getSize(); i++, j+=stepX) { |
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line[iBand][i] = gdalBuffer[iBand].buffByte[(int) j];
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} |
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} |
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} |
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/**
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* Lee una l?nea de shorts
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* @param line Buffer donde se cargan los datos
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* @param initOffset Desplazamiento inicial desde el margen inzquierdo. Esto es necesario para cuando
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* se supersamplea ya que cada pixel de imagen ocupa muchos pixeles de pantalla y puede empezar a dibujarse
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* por la izquierda a mitad de pixel
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* @param gdalBuffer Buffer con la l?nea de datos original
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*/
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private void readLine(short[][] line, double initOffset, GdalBuffer[] gdalBuffer){ |
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double j = 0D; |
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int i = 0; |
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for (int iBand = 0; iBand < gdalBuffer.length; iBand++){ |
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for (i = 0, j = initOffset; i < currentViewWidth && j < gdalBuffer[0].getSize(); i++, j+=stepX) { |
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line[iBand][i] = (short)(gdalBuffer[iBand].buffShort[(int) j] & 0xffff); |
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} |
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} |
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} |
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|
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/**
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* Lee una l?nea de ints
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* @param line Buffer donde se cargan los datos
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* @param initOffset Desplazamiento inicial desde el margen inzquierdo. Esto es necesario para cuando
|
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* se supersamplea ya que cada pixel de imagen ocupa muchos pixeles de pantalla y puede empezar a dibujarse
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* por la izquierda a mitad de pixel
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* @param gdalBuffer Buffer con la l?nea de datos original
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*/
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private void readLine(int[][] line, double initOffset, GdalBuffer[] gdalBuffer){ |
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double j = 0D; |
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int i = 0; |
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for (int iBand = 0; iBand < gdalBuffer.length; iBand++){ |
| 423 |
for (i = 0, j = initOffset; i < currentViewWidth && j < gdalBuffer[0].getSize(); i++, j+=stepX) { |
| 424 |
line[iBand][i] = (gdalBuffer[iBand].buffInt[(int) j] & 0xffffffff); |
| 425 |
} |
| 426 |
} |
| 427 |
} |
| 428 |
|
| 429 |
/**
|
| 430 |
* Lee una l?nea de float
|
| 431 |
* @param line Buffer donde se cargan los datos
|
| 432 |
* @param initOffset Desplazamiento inicial desde el margen izquierdo. Esto es necesario para cuando
|
| 433 |
* se supersamplea ya que cada pixel de imagen ocupa muchos pixeles de pantalla y puede empezar a dibujarse
|
| 434 |
* por la izquierda a mitad de pixel
|
| 435 |
* @param gdalBuffer Buffer con la l?nea de datos original
|
| 436 |
*/
|
| 437 |
private void readLine(float[][] line, double initOffset, GdalBuffer[] gdalBuffer){ |
| 438 |
double j = 0D; |
| 439 |
int i = 0; |
| 440 |
for (int iBand = 0; iBand < gdalBuffer.length; iBand++){ |
| 441 |
for (i = 0, j = initOffset; i < currentViewWidth && j < gdalBuffer[0].getSize(); i++, j+=stepX) { |
| 442 |
line[iBand][i] = gdalBuffer[iBand].buffFloat[(int) j];
|
| 443 |
} |
| 444 |
} |
| 445 |
} |
| 446 |
|
| 447 |
/**
|
| 448 |
* Lee una l?nea de doubles
|
| 449 |
* @param line Buffer donde se cargan los datos
|
| 450 |
* @param initOffset Desplazamiento inicial desde el margen inzquierdo. Esto es necesario para cuando
|
| 451 |
* se supersamplea ya que cada pixel de imagen ocupa muchos pixeles de pantalla y puede empezar a dibujarse
|
| 452 |
* por la izquierda a mitad de pixel
|
| 453 |
* @param gdalBuffer Buffer con la l?nea de datos original
|
| 454 |
*/
|
| 455 |
private void readLine(double[][] line, double initOffset, GdalBuffer[] gdalBuffer){ |
| 456 |
double j = 0D; |
| 457 |
int i = 0; |
| 458 |
for (int iBand = 0; iBand < gdalBuffer.length; iBand++){ |
| 459 |
for (i = 0, j = initOffset; i < currentViewWidth && j < gdalBuffer[0].getSize(); i++, j+=stepX) { |
| 460 |
line[iBand][i] = gdalBuffer[iBand].buffDouble[(int) j];
|
| 461 |
} |
| 462 |
} |
| 463 |
} |
| 464 |
|
| 465 |
/**
|
| 466 |
* Lee una l?nea completa del raster y devuelve un array del tipo correcto. Esta funci?n es util
|
| 467 |
* para una lectura rapida de todo el fichero sin necesidad de asignar vista.
|
| 468 |
* @param nLine N?mero de l?nea a leer
|
| 469 |
* @param band Banda requerida
|
| 470 |
* @return Object que es un array unidimendional del tipo de datos del raster
|
| 471 |
* @throws GdalException
|
| 472 |
*/
|
| 473 |
public Object readCompleteLine(int nLine, int band) throws GdalException { |
| 474 |
GdalRasterBand gdalBand = super.getRasterBand(band + 1); |
| 475 |
GdalBuffer gdalBuf = null;
|
| 476 |
|
| 477 |
gdalBuf = gdalBand.readRaster(0, nLine, getRasterXSize(), 1, getRasterXSize(), 1, dataType[band]); |
| 478 |
|
| 479 |
if (dataType[band] == GDT_Byte)
|
| 480 |
return gdalBuf.buffByte;
|
| 481 |
else if (dataType[band] == GDT_CInt16 || dataType[band] == GDT_Int16 || dataType[band] == GDT_UInt16) |
| 482 |
return gdalBuf.buffShort;
|
| 483 |
else if (dataType[band] == GDT_CInt32 || dataType[band] == GDT_Int32 || dataType[band] == GDT_UInt32) |
| 484 |
return gdalBuf.buffInt;
|
| 485 |
else if(dataType[band] == GDT_Float32 || dataType[band] == GDT_CFloat32) |
| 486 |
return gdalBuf.buffFloat;
|
| 487 |
else if(dataType[band] == GDT_Float64 || dataType[band] == GDT_CFloat64) |
| 488 |
return gdalBuf.buffDouble;
|
| 489 |
return null; |
| 490 |
} |
| 491 |
|
| 492 |
/**
|
| 493 |
* Lee una bloque completo del raster y devuelve un array tridimensional del tipo correcto. Esta funci?n es util
|
| 494 |
* para una lectura rapida de todo el fichero sin necesidad de asignar vista.
|
| 495 |
* @param nLine N?mero de l?nea a leer
|
| 496 |
* @param band Banda requerida
|
| 497 |
* @return Object que es un array unidimendional del tipo de datos del raster
|
| 498 |
* @throws GdalException
|
| 499 |
*/
|
| 500 |
public Object readBlock(int pos, int blockHeight) throws GdalException, InterruptedException { |
| 501 |
bBandNr = super.getRasterCount();
|
| 502 |
int nX = getRasterXSize();
|
| 503 |
|
| 504 |
RasterTask task = RasterTaskQueue.get(Thread.currentThread().toString());
|
| 505 |
|
| 506 |
GdalRasterBand[] gdalBand = new GdalRasterBand[bBandNr]; |
| 507 |
for (int iBand = 0; iBand < gdalBand.length; iBand++) |
| 508 |
gdalBand[iBand] = super.getRasterBand(iBand + 1); |
| 509 |
|
| 510 |
GdalBuffer[] gdalBuf = new GdalBuffer[bBandNr]; |
| 511 |
|
| 512 |
if (dataType[0] == GDT_Byte) { |
| 513 |
byte[][][] buf = new byte[bBandNr][blockHeight][getRasterXSize()]; |
| 514 |
for (int iBand = 0; iBand < gdalBuf.length; iBand++) { |
| 515 |
gdalBuf[iBand] = gdalBand[iBand].readRaster(0, pos, nX, blockHeight, nX, blockHeight, dataType[0]); |
| 516 |
for (int iRow = 0; iRow < blockHeight; iRow++) { |
| 517 |
for (int iCol = 0; iCol < nX; iCol++) |
| 518 |
buf[iBand][iRow][iCol] = gdalBuf[iBand].buffByte[iRow * nX + iCol]; |
| 519 |
if(task.getEvent() != null) |
| 520 |
task.manageEvent(task.getEvent()); |
| 521 |
} |
| 522 |
} |
| 523 |
return buf;
|
| 524 |
} else if (dataType[0] == GDT_CInt16 || dataType[0] == GDT_Int16 || dataType[0] == GDT_UInt16) { |
| 525 |
short[][][] buf = new short[bBandNr][blockHeight][getRasterXSize()]; |
| 526 |
for (int iBand = 0; iBand < gdalBuf.length; iBand++) { |
| 527 |
gdalBuf[iBand] = gdalBand[iBand].readRaster(0, pos, nX, blockHeight, nX, blockHeight, dataType[0]); |
| 528 |
for (int iRow = 0; iRow < blockHeight; iRow++) { |
| 529 |
for (int iCol = 0; iCol < nX; iCol++) |
| 530 |
buf[iBand][iRow][iCol] = gdalBuf[iBand].buffShort[iRow * nX + iCol]; |
| 531 |
if(task.getEvent() != null) |
| 532 |
task.manageEvent(task.getEvent()); |
| 533 |
} |
| 534 |
} |
| 535 |
return buf;
|
| 536 |
} else if (dataType[0] == GDT_CInt32 || dataType[0] == GDT_Int32 || dataType[0] == GDT_UInt32) { |
| 537 |
int[][][] buf = new int[bBandNr][blockHeight][getRasterXSize()]; |
| 538 |
for (int iBand = 0; iBand < gdalBuf.length; iBand++) { |
| 539 |
gdalBuf[iBand] = gdalBand[iBand].readRaster(0, pos, nX, blockHeight, nX, blockHeight, dataType[0]); |
| 540 |
for (int iRow = 0; iRow < blockHeight; iRow++) { |
| 541 |
for (int iCol = 0; iCol < nX; iCol++) |
| 542 |
buf[iBand][iRow][iCol] = gdalBuf[iBand].buffInt[iRow * nX + iCol]; |
| 543 |
if(task.getEvent() != null) |
| 544 |
task.manageEvent(task.getEvent()); |
| 545 |
} |
| 546 |
} |
| 547 |
return buf;
|
| 548 |
} else if(dataType[0] == GDT_Float32 || dataType[0] == GDT_CFloat32) { |
| 549 |
float[][][] buf = new float[bBandNr][blockHeight][getRasterXSize()]; |
| 550 |
for (int iBand = 0; iBand < gdalBuf.length; iBand++) { |
| 551 |
gdalBuf[iBand] = gdalBand[iBand].readRaster(0, pos, nX, blockHeight, nX, blockHeight, dataType[0]); |
| 552 |
for (int iRow = 0; iRow < blockHeight; iRow++) { |
| 553 |
for (int iCol = 0; iCol < nX; iCol++) |
| 554 |
buf[iBand][iRow][iCol] = gdalBuf[iBand].buffFloat[iRow * nX + iCol]; |
| 555 |
if(task.getEvent() != null) |
| 556 |
task.manageEvent(task.getEvent()); |
| 557 |
} |
| 558 |
} |
| 559 |
return buf;
|
| 560 |
} else if(dataType[0] == GDT_Float64 || dataType[0] == GDT_CFloat64) { |
| 561 |
double[][][] buf = new double[bBandNr][blockHeight][getRasterXSize()]; |
| 562 |
for (int iBand = 0; iBand < gdalBuf.length; iBand++) { |
| 563 |
gdalBuf[iBand] = gdalBand[iBand].readRaster(0, pos, nX, blockHeight, nX, blockHeight, dataType[0]); |
| 564 |
for (int iRow = 0; iRow < blockHeight; iRow++) { |
| 565 |
for (int iCol = 0; iCol < nX; iCol++) |
| 566 |
buf[iBand][iRow][iCol] = gdalBuf[iBand].buffDouble[iRow * nX + iCol]; |
| 567 |
if(task.getEvent() != null) |
| 568 |
task.manageEvent(task.getEvent()); |
| 569 |
} |
| 570 |
} |
| 571 |
return buf;
|
| 572 |
} |
| 573 |
|
| 574 |
return null; |
| 575 |
} |
| 576 |
|
| 577 |
/**
|
| 578 |
* Lectura de una l?nea de datos.
|
| 579 |
* @param line
|
| 580 |
* @throws GdalException
|
| 581 |
*/
|
| 582 |
public void readLine(Object line) throws GdalException { |
| 583 |
int w = (int) (Math.ceil(((double)currentViewWidth)*stepX) + 1); |
| 584 |
int x = (int) (currentViewX); |
| 585 |
int y = (int) (lastReadLine); |
| 586 |
GdalBuffer r = null, g = null, b = null; |
| 587 |
GdalBuffer a = new GdalBuffer();
|
| 588 |
|
| 589 |
while(y >= gdalBands[0].getRasterBandYSize()) |
| 590 |
y--; |
| 591 |
|
| 592 |
if (x+w > gdalBands[0].getRasterBandXSize()) |
| 593 |
w = gdalBands[0].getRasterBandXSize()-x;
|
| 594 |
|
| 595 |
if(gdalBands[0].getRasterColorTable() != null) { |
| 596 |
palette = new ColorTable();
|
| 597 |
palette.createPaletteFromGdalColorTable(gdalBands[0].getRasterColorTable());
|
| 598 |
r = gdalBands[0].readRaster(x, y, w, 1, w, 1, dataType[0]); |
| 599 |
} else {
|
| 600 |
a.buffByte = new byte[w]; |
| 601 |
r = gdalBands[0].readRaster(x, y, w, 1, w, 1, dataType[0]); |
| 602 |
g = b = r; |
| 603 |
if (getRasterCount() > 1 && gdalBands[1] != null) |
| 604 |
g = gdalBands[1].readRaster(x, y, w, 1, w, 1, dataType[0]); |
| 605 |
if (getRasterCount() > 2 && gdalBands[2] != null) |
| 606 |
b = gdalBands[2].readRaster(x, y, w, 1, w, 1, dataType[0]); |
| 607 |
} |
| 608 |
|
| 609 |
lastReadLine += stepY; |
| 610 |
|
| 611 |
double initOffset = Math.abs(currentViewX - ((int)currentViewX)); |
| 612 |
GdalBuffer[] bands = {r, g, b};
|
| 613 |
|
| 614 |
if (dataType[0] == GDT_Byte) |
| 615 |
readLine((byte[][])line, initOffset, bands); |
| 616 |
else if (dataType[0] == GDT_CInt16 || dataType[0] == GDT_Int16 || dataType[0] == GDT_UInt16) |
| 617 |
readLine((short[][])line, initOffset, bands); |
| 618 |
else if (dataType[0] == GDT_CInt32 || dataType[0] == GDT_Int32 || dataType[0] == GDT_UInt32) |
| 619 |
readLine((int[][])line, initOffset, bands); |
| 620 |
else if(dataType[0] == GDT_Float32 || dataType[0] == GDT_CFloat32) |
| 621 |
readLine((float[][])line, initOffset, bands); |
| 622 |
else if(dataType[0] == GDT_Float64 || dataType[0] == GDT_CFloat64) |
| 623 |
readLine((double[][])line, initOffset, bands); |
| 624 |
|
| 625 |
return;
|
| 626 |
} |
| 627 |
|
| 628 |
/**
|
| 629 |
* Cuando se hace una petici?n de carga de buffer la extensi?n pedida puede
|
| 630 |
* estar ajustada a la extensi?n del raster o no estarlo. En caso de no
|
| 631 |
* estarlo los pixeles del buffer que caen fuera de la extensi?n del raster
|
| 632 |
* tendr?n valor de NoData. Esta funci?n calcula en que pixel del buffer hay
|
| 633 |
* que empezar a escribir en caso de que este sea mayor que los datos a leer.
|
| 634 |
*
|
| 635 |
* @param dWorldTLX Posici?n X superior izquierda en coord reales
|
| 636 |
* @param dWorldTLY Posici?n Y superior izquierda en coord reales
|
| 637 |
* @param dWorldBRX Posici?n X inferior derecha en coord reales
|
| 638 |
* @param dWorldBRY Posici?n Y inferior derecha en coord reales
|
| 639 |
* @param nWidth Ancho en pixeles del buffer
|
| 640 |
* @param nHeight Alto en pixeles del buffer
|
| 641 |
* @return desplazamiento dentro del buffer en X e Y
|
| 642 |
*/
|
| 643 |
private int[] calcStepBuffer(Extent dataExtent, int nWidth, int nHeight, int[] stpBuffer) { |
| 644 |
Extent imageExtent = getExtentWithoutRot(); |
| 645 |
Extent ajustDataExtent = RasterUtilities.calculateAdjustedView(dataExtent, imageExtent); |
| 646 |
if(!RasterUtilities.compareExtents(dataExtent, ajustDataExtent)){
|
| 647 |
Point2D p1 = worldToRasterWithoutRot(new Point2D.Double(ajustDataExtent.minX(), ajustDataExtent.maxY())); |
| 648 |
Point2D p2 = worldToRasterWithoutRot(new Point2D.Double(ajustDataExtent.maxX(), ajustDataExtent.minY())); |
| 649 |
Point2D p3 = worldToRasterWithoutRot(new Point2D.Double(dataExtent.minX(), dataExtent.maxY())); |
| 650 |
Point2D p4 = worldToRasterWithoutRot(new Point2D.Double(dataExtent.maxX(), dataExtent.minY())); |
| 651 |
//Ese es el ancho y alto q tendr?a el buffer en caso de haberse ajustado
|
| 652 |
int w = (int)Math.abs(Math.ceil(p2.getX()) - Math.floor(p1.getX())); |
| 653 |
int h = (int)Math.abs(Math.floor(p1.getY()) - Math.ceil(p2.getY())); |
| 654 |
|
| 655 |
stpBuffer[0] = (int)(p1.getX() + (-p3.getX())); |
| 656 |
stpBuffer[1] = (int)(p1.getY() + (-p3.getY())); |
| 657 |
stpBuffer[2] = stpBuffer[0] + w; |
| 658 |
stpBuffer[3] = stpBuffer[1] + h; |
| 659 |
return new int[]{w, h}; |
| 660 |
} |
| 661 |
return new int[]{nWidth, nHeight}; |
| 662 |
} |
| 663 |
|
| 664 |
/**
|
| 665 |
* Lee una ventana de datos sin resampleo a partir de coordenadas reales.
|
| 666 |
* @param buf Buffer donde se almacenan los datos
|
| 667 |
* @param bandList Lista de bandas que queremos leer y sobre que bandas del buffer de destino queremos escribirlas
|
| 668 |
* @param dWorldTLX Posici?n X superior izquierda en coord reales
|
| 669 |
* @param dWorldTLY Posici?n Y superior izquierda en coord reales
|
| 670 |
* @param dWorldBRX Posici?n X inferior derecha en coord reales
|
| 671 |
* @param dWorldBRY Posici?n Y inferior derecha en coord reales
|
| 672 |
* @param nWidth Ancho en pixeles del buffer
|
| 673 |
* @param nHeight Alto en pixeles del buffer
|
| 674 |
* @throws GdalException
|
| 675 |
*/
|
| 676 |
public void readWindow(IBuffer buf, BandList bandList, double ulx, double uly,double lrx, double lry, |
| 677 |
int nWidth, int nHeight, boolean adjustToExtent) throws GdalException, InterruptedException { |
| 678 |
Extent petExtent = new Extent(ulx, uly, lrx, lry);
|
| 679 |
setView(ulx, uly, lrx, lry, nWidth, nHeight); |
| 680 |
Point2D tl = worldToRaster(new Point2D.Double(ulx, uly)); |
| 681 |
Point2D br = worldToRaster(new Point2D.Double(lrx, lry)); |
| 682 |
|
| 683 |
if(gdalBands.length == 0) |
| 684 |
return;
|
| 685 |
|
| 686 |
selectGdalBands(buf.getBandCount()); |
| 687 |
|
| 688 |
int x = (int) Math.round(Math.min(tl.getX(), br.getX())); |
| 689 |
int y = (int) Math.round(Math.min(tl.getY(), br.getY())); |
| 690 |
|
| 691 |
int[] stpBuffer = new int[]{0, 0 , buf.getWidth(), buf.getHeight()}; |
| 692 |
//Si el buffer no se ajusta al extent entonces calculamos en que posici?n comienza a escribirse dentro del buffer
|
| 693 |
//ya que lo que cae fuera ser?n valores NoData
|
| 694 |
if(!adjustToExtent){
|
| 695 |
int[] wh = calcStepBuffer(petExtent, nWidth, nHeight, stpBuffer); |
| 696 |
if(x < 0) |
| 697 |
x = 0;
|
| 698 |
if(y < 0) |
| 699 |
y = 0;
|
| 700 |
readData(buf, bandList, x, y, wh[0], wh[1], wh[0], wh[1], 0, 0, stpBuffer); |
| 701 |
return;
|
| 702 |
} |
| 703 |
|
| 704 |
readData(buf, bandList, x, y, nWidth, nHeight, nWidth, nHeight, 0, 0, stpBuffer); |
| 705 |
} |
| 706 |
|
| 707 |
/**
|
| 708 |
* Lee una ventana de datos con resampleo a partir de coordenadas reales. Este m?todo lee la
|
| 709 |
* ventana de una vez cargando los datos de un golpe en el buffer. Las coordenadas se solicitan
|
| 710 |
* en coordenadas del mundo real por lo que estas pueden caer en cualquier parte de un pixel.
|
| 711 |
* Esto se hace m?s evidente cuando supersampleamos en la petici?n, es decir el buffer de de
|
| 712 |
* mayor tama?o que el n?mero de pixels solicitado.
|
| 713 |
*
|
| 714 |
* Para resolver esto escribiremos con la funci?n readRaster los datos sobre un buffer mayor
|
| 715 |
* que el solicitado. Despu?s calcularemos el desplazamiento en pixels dentro de este buffer
|
| 716 |
* de mayor tama?o hasta llegar a la coordenada real donde comienza la petici?n real que ha
|
| 717 |
* hecho el usuario. Esto es as? porque cuando supersampleamos no queremos los pixeles del
|
| 718 |
* raster de disco completos sino que en los bordes del buffer quedan cortados.
|
| 719 |
*
|
| 720 |
* @param buf Buffer donde se almacenan los datos
|
| 721 |
* @param bandList Lista de bandas que queremos leer y sobre que bandas del buffer de destino queremos escribirlas
|
| 722 |
* @param dWorldTLX Posici?n X superior izquierda en coord reales
|
| 723 |
* @param dWorldTLY Posici?n Y superior izquierda en coord reales
|
| 724 |
* @param dWorldBRX Posici?n X inferior derecha en coord reales
|
| 725 |
* @param dWorldBRY Posici?n Y inferior derecha en coord reales
|
| 726 |
* @param nWidth Ancho en pixeles de la petici?n
|
| 727 |
* @param nHeight Alto en pixeles de la petici?n
|
| 728 |
* @param bufWidth Ancho del buffer
|
| 729 |
* @param bufHeight Alto del buffer
|
| 730 |
* @throws GdalException
|
| 731 |
*/
|
| 732 |
public void readWindow(IBuffer buf, BandList bandList, double ulx, double uly, double lrx, double lry, |
| 733 |
double nWidth, double nHeight, int bufWidth, int bufHeight, boolean adjustToExtent) throws GdalException, InterruptedException { |
| 734 |
Extent petExtent = new Extent(ulx, uly, lrx, lry);
|
| 735 |
setView(ulx, uly, lrx, lry, bufWidth, bufHeight); |
| 736 |
Point2D tl = worldToRaster(new Point2D.Double(ulx, uly)); |
| 737 |
Point2D br = worldToRaster(new Point2D.Double(lrx, lry)); |
| 738 |
|
| 739 |
if(gdalBands.length == 0) |
| 740 |
return;
|
| 741 |
|
| 742 |
selectGdalBands(buf.getBandCount()); |
| 743 |
|
| 744 |
int x = (int) Math.min(tl.getX(), br.getX()); |
| 745 |
int y = (int) Math.min(tl.getY(), br.getY()); |
| 746 |
int endX = (int) Math.ceil(Math.max(br.getX(), tl.getX())); |
| 747 |
int endY = (int) Math.ceil(Math.max(br.getY(), tl.getY())); |
| 748 |
|
| 749 |
int stpX = 0; |
| 750 |
int stpY = 0; |
| 751 |
|
| 752 |
if(bufWidth > Math.ceil(nWidth)){ |
| 753 |
stpX = (int)(((tl.getX() - x) * bufWidth) / nWidth);
|
| 754 |
bufWidth = (int)((Math.abs(endX - x) * bufWidth) / nWidth); |
| 755 |
} |
| 756 |
if(bufHeight > Math.ceil(nHeight)){ |
| 757 |
stpY = (int)(((tl.getY() - y) * bufHeight) / nHeight);
|
| 758 |
bufHeight = (int)((Math.abs(endY - y) * bufHeight) / nHeight); |
| 759 |
} |
| 760 |
|
| 761 |
nWidth = (int)Math.abs(endX - x); |
| 762 |
nHeight = (int)Math.abs(endY - y); |
| 763 |
|
| 764 |
int[] stpBuffer = new int[]{0, 0 , buf.getWidth(), buf.getHeight()}; |
| 765 |
//Si el buffer no se ajusta al extent entonces calculamos en que posici?n comienza a escribirse dentro del buffer
|
| 766 |
//ya que lo que cae fuera ser?n valores NoData
|
| 767 |
if(!adjustToExtent){
|
| 768 |
int[] wh = calcStepBuffer(petExtent, bufWidth, bufHeight, stpBuffer); |
| 769 |
if(x < 0) |
| 770 |
x = 0;
|
| 771 |
if(y < 0) |
| 772 |
y = 0;
|
| 773 |
stpBuffer[0] = (int)((stpBuffer[0] * bufWidth) / nWidth); |
| 774 |
stpBuffer[1] = (int)((stpBuffer[1] * bufHeight) / nHeight); |
| 775 |
stpBuffer[2] = (int)((stpBuffer[2] * bufWidth) / nWidth); |
| 776 |
stpBuffer[3] = (int)((stpBuffer[3] * bufHeight) / nHeight); |
| 777 |
bufWidth = (int)Math.abs(stpBuffer[2] - stpBuffer[0]); |
| 778 |
bufHeight = (int)Math.abs(stpBuffer[3] - stpBuffer[1]); |
| 779 |
readData(buf, bandList, x, y, wh[0], wh[1], bufWidth, bufHeight, 0, 0, stpBuffer); |
| 780 |
return;
|
| 781 |
} |
| 782 |
|
| 783 |
if ((x + nWidth) > gdalBands[0].getRasterBandXSize()) |
| 784 |
nWidth = gdalBands[0].getRasterBandXSize() - x;
|
| 785 |
|
| 786 |
if ((y + nHeight) > gdalBands[0].getRasterBandYSize()) |
| 787 |
nHeight = gdalBands[0].getRasterBandYSize() - y;
|
| 788 |
|
| 789 |
readData(buf, bandList, x, y, (int)nWidth, (int)nHeight, bufWidth, bufHeight, stpX, stpY, stpBuffer); |
| 790 |
} |
| 791 |
|
| 792 |
/**
|
| 793 |
* Lee una ventana de datos sin resampleo a partir de coordenadas en pixeles.
|
| 794 |
* @param buf Buffer donde se almacenan los datos
|
| 795 |
* @param bandList Lista de bandas que queremos leer y sobre que bandas del buffer de destino queremos escribirlas
|
| 796 |
* @param x Posici?n X en pixeles
|
| 797 |
* @param y Posici?n Y en pixeles
|
| 798 |
* @param w Ancho en pixeles
|
| 799 |
* @param h Alto en pixeles
|
| 800 |
* @throws GdalException
|
| 801 |
*/
|
| 802 |
public void readWindow(IBuffer buf, BandList bandList, int x, int y, int w, int h) |
| 803 |
throws GdalException, InterruptedException { |
| 804 |
gdalBands = new GdalRasterBand[getRasterCount()];
|
| 805 |
isSupersampling = false;
|
| 806 |
if(gdalBands.length == 0) |
| 807 |
return;
|
| 808 |
|
| 809 |
// Selecciona las bandas
|
| 810 |
gdalBands[0] = getRasterBand(1); |
| 811 |
|
| 812 |
for(int iBand = 1; iBand < gdalBands.length; iBand++) |
| 813 |
gdalBands[iBand] = getRasterBand(iBand + 1);
|
| 814 |
|
| 815 |
assignDataTypeFromGdalRasterBands(gdalBands); |
| 816 |
|
| 817 |
int yMax = y + h;
|
| 818 |
readDataByLine(buf, bandList, x, y, w, yMax); |
| 819 |
} |
| 820 |
|
| 821 |
/**
|
| 822 |
* Lee una ventana de datos con resampleo a partir de coordenadas en pixeles. Este m?todo lee la
|
| 823 |
* ventana de una vez cargando los datos de un golpe en el buffer.
|
| 824 |
* @param buf Buffer donde se almacenan los datos
|
| 825 |
* @param bandList Lista de bandas que queremos leer y sobre que bandas del buffer de destino queremos escribirlas
|
| 826 |
* @param x Posici?n X en pixeles
|
| 827 |
* @param y Posici?n Y en pixeles
|
| 828 |
* @param w Ancho en pixeles
|
| 829 |
* @param h Alto en pixeles
|
| 830 |
* @param bufWidth Ancho del buffer
|
| 831 |
* @param bufHeight Alto del buffer
|
| 832 |
* @throws GdalException
|
| 833 |
*/
|
| 834 |
public void readWindow(IBuffer buf, BandList bandList, int x, int y, int w, int h, int bufWidth, int bufHeight) throws GdalException, InterruptedException { |
| 835 |
gdalBands = new GdalRasterBand[getRasterCount()];
|
| 836 |
|
| 837 |
if(gdalBands.length == 0) |
| 838 |
return;
|
| 839 |
|
| 840 |
// Selecciona las bandas
|
| 841 |
gdalBands[0] = getRasterBand(1); |
| 842 |
|
| 843 |
for(int iBand = 1; iBand < gdalBands.length; iBand++) |
| 844 |
gdalBands[iBand] = getRasterBand(iBand + 1);
|
| 845 |
|
| 846 |
assignDataTypeFromGdalRasterBands(gdalBands); |
| 847 |
|
| 848 |
int[] stpBuffer = new int[]{0, 0 , buf.getWidth(), buf.getHeight()}; |
| 849 |
readData(buf, bandList, x, y, w, h, bufWidth, bufHeight, 0, 0, stpBuffer); |
| 850 |
} |
| 851 |
|
| 852 |
/**
|
| 853 |
* Asigna el tipo de datos de las bandas a partir de una lista de GdalRasterBands
|
| 854 |
* @param gdalBands
|
| 855 |
* @throws GdalException
|
| 856 |
*/
|
| 857 |
private void assignDataTypeFromGdalRasterBands(GdalRasterBand[] gdalBands) throws GdalException { |
| 858 |
int[] dt = new int[gdalBands.length]; |
| 859 |
for (int i = 0; i < gdalBands.length; i++) { |
| 860 |
if(gdalBands[i] != null) |
| 861 |
dt[i] = gdalBands[i].getRasterDataType(); |
| 862 |
} |
| 863 |
setDataType(dt); |
| 864 |
} |
| 865 |
|
| 866 |
/**
|
| 867 |
* Lee una ventana de datos sin resampleo a partir de coordenadas en pixeles. Esta funci?n es usuada por
|
| 868 |
* readWindow para coordenadas reales y readWindow en coordenadas pixel.
|
| 869 |
* @param buf Buffer donde se almacenan los datos
|
| 870 |
* @param bandList Lista de bandas que queremos leer y sobre que bandas del buffer de destino queremos escribirlas
|
| 871 |
* @param x Posici?n X en pixeles
|
| 872 |
* @param y Posici?n Y en pixeles
|
| 873 |
* @param w Ancho en pixeles
|
| 874 |
* @param h Alto en pixeles
|
| 875 |
* @param bufWidth Ancho del buffer
|
| 876 |
* @param bufHeight Alto del buffer
|
| 877 |
* @param stepX Desplazamiento en pixeles en X a partir de la posici?n x. Este desplazamiento es util cuando hay un
|
| 878 |
* supersampleo ya que puede ser que de los pixeles que est?n en el borde izquierdo de la petici?n solo queramos una
|
| 879 |
* parte de ellos.
|
| 880 |
* @param stepY Desplazamiento en pixeles en Y a partir de la posici?n y. Este desplazamiento es util cuando hay un
|
| 881 |
* supersampleo ya que puede ser que de los pixeles que est?n en el borde superior de la petici?n solo queramos una
|
| 882 |
* parte de ellos.
|
| 883 |
* @param stepBuffer El buffer puede empezar a escribirse a partir de un pixel determinado y acabar de escribir antes
|
| 884 |
* de fin de buffer. Este par?metro indica el desplazamiento desde el inicio del buffer y la posici?n final.
|
| 885 |
* <UL>
|
| 886 |
* <LI>stepBuffer[0]:Desplazamiento en X desde el inicio</LI>
|
| 887 |
* <LI>stepBuffer[1]:Desplazamiento en Y desde el inicio</LI>
|
| 888 |
* <LI>stepBuffer[2]:Posici?n X final</LI>
|
| 889 |
* <LI>stepBuffer[3]:Posici?n Y final</LI>
|
| 890 |
* </UL>
|
| 891 |
* @throws GdalException
|
| 892 |
*/
|
| 893 |
private void readData(IBuffer buf, BandList bandList, int x, int y, int w, int h, |
| 894 |
int bufWidth, int bufHeight, int stpX, int stpY, int[] stepBuffer) throws GdalException, InterruptedException { |
| 895 |
|
| 896 |
RasterTask task = RasterTaskQueue.get(Thread.currentThread().toString());
|
| 897 |
|
| 898 |
GdalBuffer gdalBuf = null;
|
| 899 |
for(int iBand = 0; iBand < gdalBands.length; iBand++) { |
| 900 |
int[] drawableBands = bandList.getBufferBandToDraw(fileName, iBand); |
| 901 |
if(drawableBands == null || (drawableBands.length == 1 && drawableBands[0] == -1)) |
| 902 |
continue;
|
| 903 |
int init = (int)((bufWidth * stpY) + stpX); //Pos inicial. Desplazamos stpX pixels hacia la derecha y bajamos stpY lineas |
| 904 |
int pos = init;
|
| 905 |
gdalBuf = gdalBands[iBand].readRaster(x, y, w, h, bufWidth, bufHeight, dataType[iBand]); |
| 906 |
if(dataType[iBand] == Gdal.GDT_Byte){
|
| 907 |
for (int line = stepBuffer[1]; line < stepBuffer[3]/*buf.getHeight()*/; line++) { |
| 908 |
pos = (int)((bufWidth * (line - stepBuffer[0])) + init); |
| 909 |
for (int col = stepBuffer[0]; col < stepBuffer[2]/*buf.getWidth()*/; col ++) { |
| 910 |
buf.setElem(line, col, iBand, gdalBuf.buffByte[pos]); |
| 911 |
pos ++; |
| 912 |
} |
| 913 |
if(task.getEvent() != null) |
| 914 |
task.manageEvent(task.getEvent()); |
| 915 |
} |
| 916 |
}else if((dataType[iBand] == Gdal.GDT_UInt16) || (dataType[iBand] == Gdal.GDT_Int16) || (dataType[iBand] == Gdal.GDT_CInt16)){ |
| 917 |
for (int line = stepBuffer[1]; line < stepBuffer[3]; line++) { |
| 918 |
pos = (int)((bufWidth * (line - stepBuffer[0])) + init); |
| 919 |
for (int col = stepBuffer[0]; col < stepBuffer[2]; col ++){ |
| 920 |
buf.setElem(line, col, iBand, gdalBuf.buffShort[pos]); |
| 921 |
pos ++; |
| 922 |
} |
| 923 |
if(task.getEvent() != null) |
| 924 |
task.manageEvent(task.getEvent()); |
| 925 |
} |
| 926 |
}else if((dataType[iBand] == Gdal.GDT_UInt32) || (dataType[iBand] == Gdal.GDT_Int32) || (dataType[iBand] == Gdal.GDT_CInt32)){ |
| 927 |
for (int line = stepBuffer[1]; line < stepBuffer[3]; line++) { |
| 928 |
pos = (int)((bufWidth * (line - stepBuffer[0])) + init); |
| 929 |
for (int col = stepBuffer[0]; col < stepBuffer[2]; col ++){ |
| 930 |
buf.setElem(line, col, iBand, gdalBuf.buffInt[pos]); |
| 931 |
pos ++; |
| 932 |
} |
| 933 |
if(task.getEvent() != null) |
| 934 |
task.manageEvent(task.getEvent()); |
| 935 |
} |
| 936 |
}else if(dataType[iBand] == Gdal.GDT_Float32){ |
| 937 |
for (int line = stepBuffer[1]; line < stepBuffer[3]; line++) { |
| 938 |
pos = (int)((bufWidth * (line - stepBuffer[0])) + init); |
| 939 |
for (int col = stepBuffer[0]; col < stepBuffer[2]; col ++){ |
| 940 |
buf.setElem(line, col, iBand, gdalBuf.buffFloat[pos]); |
| 941 |
pos ++; |
| 942 |
} |
| 943 |
if(task.getEvent() != null) |
| 944 |
task.manageEvent(task.getEvent()); |
| 945 |
} |
| 946 |
}else if(dataType[iBand] == Gdal.GDT_Float64){ |
| 947 |
for (int line = stepBuffer[1]; line < stepBuffer[3]; line++) { |
| 948 |
pos = (int)((bufWidth * (line - stepBuffer[0])) + init); |
| 949 |
for (int col = stepBuffer[0]; col < stepBuffer[2]; col ++){ |
| 950 |
buf.setElem(line, col, iBand, gdalBuf.buffDouble[pos]); |
| 951 |
pos ++; |
| 952 |
} |
| 953 |
if(task.getEvent() != null) |
| 954 |
task.manageEvent(task.getEvent()); |
| 955 |
} |
| 956 |
} |
| 957 |
} |
| 958 |
} |
| 959 |
|
| 960 |
/**
|
| 961 |
* Lee una ventana de datos sin resampleo a partir de coordenadas en pixeles. Esta funci?n es usuada por
|
| 962 |
* readWindow para coordenadas reales y readWindow en coordenadas pixel.
|
| 963 |
* @param buf Buffer donde se almacenan los datos
|
| 964 |
* @param bandList Lista de bandas que queremos leer y sobre que bandas del buffer de destino queremos escribirlas
|
| 965 |
* @param x Posici?n X en pixeles
|
| 966 |
* @param y Posici?n Y en pixeles
|
| 967 |
* @param w Ancho en pixeles
|
| 968 |
* @param yMax altura m?xima de y
|
| 969 |
* @throws GdalException
|
| 970 |
*/
|
| 971 |
private void readDataByLine(IBuffer buf, BandList bandList, int x, int y, int w, int yMax) throws GdalException, InterruptedException { |
| 972 |
GdalBuffer gdalBuf = null;
|
| 973 |
int rasterBufLine;
|
| 974 |
RasterTask task = RasterTaskQueue.get(Thread.currentThread().toString());
|
| 975 |
|
| 976 |
for(int iBand = 0; iBand < gdalBands.length; iBand++) { |
| 977 |
int[] drawableBands = bandList.getBufferBandToDraw(fileName, iBand); |
| 978 |
if(drawableBands == null || (drawableBands.length == 1 && drawableBands[0] == -1)) |
| 979 |
continue;
|
| 980 |
if(dataType[iBand] == Gdal.GDT_Byte) {
|
| 981 |
for (int line = y; line < yMax; line++) { |
| 982 |
gdalBuf = gdalBands[iBand].readRaster(x, line, w, 1, w, 1, dataType[iBand]); |
| 983 |
rasterBufLine = line - y; |
| 984 |
buf.setLineInBandByte(gdalBuf.buffByte, rasterBufLine, iBand); |
| 985 |
if(task.getEvent() != null) |
| 986 |
task.manageEvent(task.getEvent()); |
| 987 |
} |
| 988 |
}else if((dataType[iBand] == Gdal.GDT_UInt16) || (dataType[iBand] == Gdal.GDT_Int16) || (dataType[iBand] == Gdal.GDT_CInt16)) { |
| 989 |
for (int line = y; line < yMax; line++) { |
| 990 |
gdalBuf = gdalBands[iBand].readRaster(x, line, w, 1, w, 1, dataType[iBand]); |
| 991 |
rasterBufLine = line - y; |
| 992 |
buf.setLineInBandShort(gdalBuf.buffShort, rasterBufLine, iBand); |
| 993 |
if(task.getEvent() != null) |
| 994 |
task.manageEvent(task.getEvent()); |
| 995 |
} |
| 996 |
}else if((dataType[iBand] == Gdal.GDT_UInt32) || (dataType[iBand] == Gdal.GDT_Int32) || (dataType[iBand] == Gdal.GDT_CInt32)) { |
| 997 |
for (int line = y; line < yMax; line++) { |
| 998 |
gdalBuf = gdalBands[iBand].readRaster(x, line, w, 1, w, 1, dataType[iBand]); |
| 999 |
rasterBufLine = line - y; |
| 1000 |
buf.setLineInBandInt(gdalBuf.buffInt, rasterBufLine, iBand); |
| 1001 |
if(task.getEvent() != null) |
| 1002 |
task.manageEvent(task.getEvent()); |
| 1003 |
} |
| 1004 |
}else if(dataType[iBand] == Gdal.GDT_Float32){ |
| 1005 |
for (int line = y; line < yMax; line++) { |
| 1006 |
gdalBuf = gdalBands[iBand].readRaster(x, line, w, 1, w, 1, dataType[iBand]); |
| 1007 |
rasterBufLine = line - y; |
| 1008 |
buf.setLineInBandFloat(gdalBuf.buffFloat, rasterBufLine, iBand); |
| 1009 |
if(task.getEvent() != null) |
| 1010 |
task.manageEvent(task.getEvent()); |
| 1011 |
} |
| 1012 |
}else if(dataType[iBand] == Gdal.GDT_Float64){ |
| 1013 |
for (int line = y; line < yMax; line++) { |
| 1014 |
gdalBuf = gdalBands[iBand].readRaster(x, line, w, 1, w, 1, dataType[iBand]); |
| 1015 |
rasterBufLine = line - y; |
| 1016 |
buf.setLineInBandDouble(gdalBuf.buffDouble, rasterBufLine, iBand); |
| 1017 |
if(task.getEvent() != null) |
| 1018 |
task.manageEvent(task.getEvent()); |
| 1019 |
} |
| 1020 |
} |
| 1021 |
} |
| 1022 |
} |
| 1023 |
|
| 1024 |
/**
|
| 1025 |
* Obtiene el valor de un pixel determinado por las coordenadas x e y que se pasan
|
| 1026 |
* por par?metro
|
| 1027 |
* @param x Coordenada X del pixel
|
| 1028 |
* @param y Coordenada Y del pixel
|
| 1029 |
* @return Array de Object donde cada posici?n representa una banda y el valor ser? Integer
|
| 1030 |
* en caso de ser byte, shot o int, Float en caso de ser float y Double en caso de ser double.
|
| 1031 |
*/
|
| 1032 |
public Object[] getData(int x, int y) { |
| 1033 |
try {
|
| 1034 |
Object[] data = new Object[getRasterCount()]; |
| 1035 |
for(int i = 0; i < getRasterCount(); i++){ |
| 1036 |
GdalRasterBand rb = getRasterBand(i + 1);
|
| 1037 |
GdalBuffer r = rb.readRaster(x, y, 1, 1, 1, 1, dataType[i]); |
| 1038 |
switch(dataType[i]){
|
| 1039 |
case 0: break; //Sin tipo |
| 1040 |
case 1: data[i] = new Integer(r.buffByte[0]); //Buffer byte (8) |
| 1041 |
break;
|
| 1042 |
case 2: //Buffer short (16) |
| 1043 |
case 3: data[i] = new Integer(r.buffShort[0]); //Buffer short (16) |
| 1044 |
break;
|
| 1045 |
case 4: //Buffer int (32) |
| 1046 |
case 5: data[i] = new Integer(r.buffInt[0]); //Buffer int (32) |
| 1047 |
break;
|
| 1048 |
case 6: data[i] = new Float(r.buffFloat[0]); //Buffer float (32) |
| 1049 |
break;
|
| 1050 |
case 7: data[i] = new Double(r.buffDouble[0]); //Buffer double (64) |
| 1051 |
break;
|
| 1052 |
} |
| 1053 |
} |
| 1054 |
return data;
|
| 1055 |
} catch (GdalException e) {
|
| 1056 |
return null; |
| 1057 |
} |
| 1058 |
} |
| 1059 |
|
| 1060 |
public int getBlockSize(){ |
| 1061 |
return this.getBlockSize(); |
| 1062 |
} |
| 1063 |
|
| 1064 |
/**
|
| 1065 |
* Devuelve la transformaci?n del fichero de georreferenciaci?n
|
| 1066 |
* @return AffineTransform
|
| 1067 |
*/
|
| 1068 |
public AffineTransform getOwnTransformation() { |
| 1069 |
return ownTransformation;
|
| 1070 |
} |
| 1071 |
|
| 1072 |
/**
|
| 1073 |
* Calcula el extent en coordenadas del mundo real sin rotaci?n. Solo coordenadas y tama?o de pixel
|
| 1074 |
* @return Extent
|
| 1075 |
*/
|
| 1076 |
public Extent getExtentWithoutRot() {
|
| 1077 |
AffineTransform at = new AffineTransform( externalTransformation.getScaleX(), 0, |
| 1078 |
0, externalTransformation.getScaleY(),
|
| 1079 |
externalTransformation.getTranslateX(), externalTransformation.getTranslateY()); |
| 1080 |
Point2D p1 = new Point2D.Double(0, 0); |
| 1081 |
Point2D p2 = new Point2D.Double(width, height); |
| 1082 |
at.transform(p1, p1); |
| 1083 |
at.transform(p2, p2); |
| 1084 |
return new Extent(p1, p2); |
| 1085 |
} |
| 1086 |
|
| 1087 |
/**
|
| 1088 |
* Asigna una transformaci?n que es aplicada sobre la que ya tiene el propio fichero
|
| 1089 |
* @param t
|
| 1090 |
*/
|
| 1091 |
public void setExternalTransform(AffineTransform t){ |
| 1092 |
externalTransformation = t; |
| 1093 |
} |
| 1094 |
|
| 1095 |
/**
|
| 1096 |
* Obtiene el nombre del driver de Gdal
|
| 1097 |
* @return Cadena que representa el nombre del driver de gdal
|
| 1098 |
*/
|
| 1099 |
public String getGdalShortName() { |
| 1100 |
return shortName;
|
| 1101 |
} |
| 1102 |
|
| 1103 |
} |
| 1104 |
|
| 1105 |
|
| 1106 |
|
| 1107 |
|