gvsig-raster / org.gvsig.raster.gdal / trunk / org.gvsig.raster.gdal / org.gvsig.raster.gdal.io / src / main / java / org / gvsig / raster / gdal / io / GdalDataSource.java @ 4437
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/* gvSIG. Geographic Information System of the Valencian Government
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*
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* Copyright (C) 2007-2008 Infrastructures and Transports Department
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* of the Valencian Government (CIT)
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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., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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*/
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package org.gvsig.raster.gdal.io; |
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import java.awt.Color; |
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import java.awt.Rectangle; |
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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 java.util.ArrayList; |
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import java.util.List; |
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import org.gdal.gdal.gdal; |
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import org.gdal.ogr.ogr; |
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import org.slf4j.Logger; |
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import org.slf4j.LoggerFactory; |
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import org.gvsig.fmap.dal.coverage.RasterLibrary; |
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import org.gvsig.fmap.dal.coverage.RasterLocator; |
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import org.gvsig.fmap.dal.coverage.dataset.Buffer; |
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import org.gvsig.fmap.dal.coverage.datastruct.BandList; |
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import org.gvsig.fmap.dal.coverage.datastruct.ColorItem; |
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import org.gvsig.fmap.dal.coverage.datastruct.Extent; |
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import org.gvsig.fmap.dal.coverage.datastruct.NoData; |
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import org.gvsig.fmap.dal.coverage.exception.ProcessInterruptedException; |
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import org.gvsig.fmap.dal.coverage.store.props.ColorInterpretation; |
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import org.gvsig.fmap.dal.coverage.store.props.ColorTable; |
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import org.gvsig.fmap.dal.coverage.util.FileUtils; |
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import org.gvsig.jgdal.GdalBuffer; |
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import org.gvsig.jgdal.GdalColorEntry; |
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import org.gvsig.jgdal.GdalColorTable; |
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import org.gvsig.jgdal.GdalDataset; |
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import org.gvsig.jgdal.GdalException; |
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import org.gvsig.jgdal.GdalRasterBand; |
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import org.gvsig.jgdal.GeoTransform; |
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import org.gvsig.raster.impl.datastruct.ColorItemImpl; |
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import org.gvsig.raster.impl.datastruct.DefaultNoData; |
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import org.gvsig.raster.impl.datastruct.ExtentImpl; |
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import org.gvsig.raster.impl.process.RasterTask; |
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import org.gvsig.raster.impl.process.RasterTaskQueue; |
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import org.gvsig.raster.impl.store.properties.DataStoreColorInterpretation; |
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import org.gvsig.raster.impl.store.properties.DataStoreColorTable; |
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import org.gvsig.raster.impl.store.properties.DataStoreMetadata; |
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import org.gvsig.raster.impl.store.properties.DataStoreTransparency; |
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import org.gvsig.tools.dispose.Disposable; |
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import org.gvsig.tools.task.TaskStatus; |
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/**
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* Soporte 'nativo' para ficheros desde GDAL.
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*/
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public class GdalDataSource extends GdalDataset implements Disposable { |
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private String fileName = null; |
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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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DataStoreMetadata metadata = null;
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protected boolean georeferenced = true; |
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private static final Logger logger = LoggerFactory.getLogger(GdalDataSource.class); |
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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; |
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public int[] stepArrayY = null; |
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protected GdalRasterBand[] gdalBands = null; |
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private double lastReadLine = -1; |
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private int overviewWidth = -1; |
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private int overviewHeight = -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 stepX = 0D; |
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private double stepY = 0D; |
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public boolean isSupersampling = false; |
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private boolean open = false; |
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/**
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* Estado de transparencia del raster.
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*/
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protected DataStoreTransparency fileTransparency = null; |
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protected DataStoreColorTable palette = null; |
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protected DataStoreColorInterpretation colorInterpr = null; |
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protected AffineTransform ownTransformation = null; |
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protected AffineTransform externalTransformation = new AffineTransform(); |
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public static int getGdalTypeFromRasterBufType(int rasterBufType) { |
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switch (rasterBufType) {
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case Buffer.TYPE_BYTE: return GdalDataset.GDT_Byte; |
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case Buffer.TYPE_USHORT: return GdalDataset.GDT_UInt16; |
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case Buffer.TYPE_SHORT: return GdalDataset.GDT_Int16; |
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case Buffer.TYPE_INT: return GdalDataset.GDT_Int32; |
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case Buffer.TYPE_FLOAT: return GdalDataset.GDT_Float32; |
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case Buffer.TYPE_DOUBLE: return GdalDataset.GDT_Float64; |
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case Buffer.TYPE_UNDEFINED: return GdalDataset.GDT_Unknown; |
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case Buffer.TYPE_IMAGE: return GdalDataset.GDT_Byte; |
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} |
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return GdalDataset.GDT_Unknown;
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} |
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/**
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* Conversi?n de los tipos de datos de gdal a los tipos de datos de RasterBuf
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* @param gdalType Tipo de dato de gdal
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* @return Tipo de dato de RasterBuf
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*/
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public static int getRasterBufTypeFromGdalType(int gdalType) { |
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switch (gdalType) {
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case 1:// Eight bit unsigned integer GDT_Byte = 1 |
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return Buffer.TYPE_BYTE; |
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case 3:// Sixteen bit signed integer GDT_Int16 = 3, |
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return Buffer.TYPE_SHORT; |
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case 2:// Sixteen bit unsigned integer GDT_UInt16 = 2 |
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//return RasterBuffer.TYPE_USHORT;
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return Buffer.TYPE_SHORT; //Apa?o para usar los tipos de datos que soportamos |
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case 5:// Thirty two bit signed integer GDT_Int32 = 5 |
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return Buffer.TYPE_INT; |
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case 6:// Thirty two bit floating point GDT_Float32 = 6 |
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return Buffer.TYPE_FLOAT; |
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case 7:// Sixty four bit floating point GDT_Float64 = 7 |
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return Buffer.TYPE_DOUBLE; |
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// TODO:Estos tipos de datos no podemos gestionarlos. Habria que definir
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// el tipo complejo y usar el tipo long que de momento no se gasta.
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case 4:// Thirty two bit unsigned integer GDT_UInt32 = 4, |
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return Buffer.TYPE_INT; |
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//return RasterBuffer.TYPE_UNDEFINED; // Deberia devolver un Long
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case 8:// Complex Int16 GDT_CInt16 = 8 |
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case 9:// Complex Int32 GDT_CInt32 = 9 |
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case 10:// Complex Float32 GDT_CFloat32 = 10 |
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case 11:// Complex Float64 GDT_CFloat64 = 11 |
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return Buffer.TYPE_UNDEFINED; |
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} |
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return Buffer.TYPE_UNDEFINED; |
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} |
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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 GdalDataSource(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 static Dataset initializeGdal(String fName) throws GdalException {
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// gdal.AllRegister();
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// ogr.RegisterAll();
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// Dataset data = gdal.Open(fName, 1);
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// if (data == null)
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// throw new GdalException("Error en la apertura del fichero. El fichero no tiene un formato v?lido.");
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//
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// return data;
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// }
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private void init(String fName) throws GdalException, IOException { |
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gdal.AllRegister(); |
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ogr.RegisterAll(); |
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fileName = fName; |
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open(fName, GA_ReadOnly); |
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open = true;
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if (getDataset() == null) |
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throw new GdalException("Error en la apertura del fichero. El fichero no tiene un formato v?lido."); |
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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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colorInterpr = new DataStoreColorInterpretation(getRasterCount());
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fileTransparency = new DataStoreTransparency(colorInterpr);
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metadata = new DataStoreMetadata(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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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.setNoDataEnabled(rb.existsNoDataValue()); |
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if(rb.existsNoDataValue()) {
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metadata.setNoDataValue(i, rb.getRasterNoDataValue()); |
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metadata.setNoDataEnabled(rb.existsNoDataValue()); |
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} |
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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 DataStoreColorTable(gdalColorTable2ColorItems(rb.getRasterColorTable()), false); |
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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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double psX = trans.adfgeotransform[1]; |
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double psY = trans.adfgeotransform[5]; |
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double rotX = trans.adfgeotransform[4]; |
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double rotY = trans.adfgeotransform[2]; |
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double offX = trans.adfgeotransform[0]; |
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double offY = trans.adfgeotransform[3]; |
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ownTransformation = new AffineTransform(psX, rotX, rotY, psY, offX, offY); |
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//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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overviewWidth = width; |
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overviewHeight = 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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logger.warn("Can't retrieve transformation from file '"+fName+"' use default.", exc); |
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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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overviewWidth = width; |
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overviewHeight = height; |
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this.georeferenced = false; |
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} |
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} |
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/**
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* Returns true if this provider is open and false if don't
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* @return
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*/
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public boolean isOpen() { |
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return open;
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} |
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/**
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* Obtiene el flag que informa de si el raster tiene valor no data o no.
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* Consultar? todas las bandas del mismo y si alguna tiene valor no data
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* devuelve true sino devolver? false.
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* @return true si tiene valor no data y false si no lo tiene
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* @throws GdalException
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*/
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public boolean existsNoDataValue() throws GdalException { |
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for (int i = 0; i < getRasterCount(); i++) { |
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GdalRasterBand rb = getRasterBand(i + 1);
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if (rb.existsNoDataValue())
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return true; |
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} |
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return false; |
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} |
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/**
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* Obtiene el flag que informa de si el raster tiene valor no data o no
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* en una banda concreta.
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* @return true si tiene valor no data en esa banda y false si no lo tiene
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* @param band Posici?n de la banda a consultar (0..n)
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* @throws GdalException
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*/
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public boolean existsNoDataValue(int band) throws GdalException { |
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GdalRasterBand rb = getRasterBand(band + 1);
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return rb.existsNoDataValue();
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} |
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/**
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* Gets nodata value
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* @return
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*/
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public NoData getNoDataValue() {
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Number value = null; |
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int type = getRasterBufTypeFromGdalType(getDataType()[0]); |
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if (metadata != null && metadata.isNoDataEnabled() && metadata.getNoDataValue().length > 0) { |
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switch (type) {
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case Buffer.TYPE_BYTE: |
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if (metadata == null || metadata.getNoDataValue().length == 0) |
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value = new Byte(RasterLibrary.defaultByteNoDataValue); |
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else
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value = new Byte((byte)metadata.getNoDataValue()[0]); |
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break;
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case Buffer.TYPE_SHORT: |
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if (metadata == null || metadata.getNoDataValue().length == 0) |
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value = new Short(RasterLibrary.defaultShortNoDataValue); |
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else
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value = new Short((short)metadata.getNoDataValue()[0]); |
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break;
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case Buffer.TYPE_INT: |
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if (metadata == null || metadata.getNoDataValue().length == 0) |
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value = new Integer((int)RasterLibrary.defaultIntegerNoDataValue); |
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else
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value = new Integer((int)metadata.getNoDataValue()[0]); |
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break;
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case Buffer.TYPE_FLOAT: |
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if (metadata == null || metadata.getNoDataValue().length == 0) |
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value = new Float(RasterLibrary.defaultFloatNoDataValue); |
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else
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value = new Float(metadata.getNoDataValue()[0]); |
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break;
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case Buffer.TYPE_DOUBLE: |
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if (metadata == null || metadata.getNoDataValue().length == 0) |
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value = new Double(RasterLibrary.defaultFloatNoDataValue); |
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else
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value = new Double(metadata.getNoDataValue()[0]); |
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break;
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} |
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} |
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NoData nodata = new DefaultNoData(value, value, fileName);
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nodata.setNoDataTransparent(false);
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return nodata;
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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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* Gets the color interpretation
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* @return
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*/
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public ColorInterpretation getColorInterpretation() {
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return colorInterpr;
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} |
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/**
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* Gets the color table
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* @return
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*/
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public ColorTable getColorTable() {
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return palette;
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} |
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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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/**
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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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/**
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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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/**
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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
|
| 437 |
* @param coordenada pixel expresada en double que indica la posici?n superior izquierda
|
| 438 |
* @throws GdalException
|
| 439 |
*/
|
| 440 |
private void calcOverview(Point2D tl, Point2D br) throws GdalException { |
| 441 |
gdalBands[0] = getRasterBand(1); |
| 442 |
currentOverview = -1;
|
| 443 |
if (gdalBands[0].getOverviewCount() > 0) { |
| 444 |
GdalRasterBand ovb = null;
|
| 445 |
for (int i = gdalBands[0].getOverviewCount() - 1; i > 0; i--) { |
| 446 |
ovb = gdalBands[0].getOverview(i);
|
| 447 |
if (ovb.getRasterBandXSize() > getRasterXSize() * viewportScaleX) {
|
| 448 |
currentOverview = i; |
| 449 |
viewportScaleX *= ((double) width / (double) ovb.getRasterBandXSize()); |
| 450 |
viewportScaleY *= ((double) height / (double) ovb.getRasterBandYSize()); |
| 451 |
stepX = 1D / viewportScaleX;
|
| 452 |
stepY = 1D / viewportScaleY;
|
| 453 |
overviewWidth = ovb.getRasterBandXSize(); |
| 454 |
overviewHeight = ovb.getRasterBandYSize(); |
| 455 |
currentViewX = Math.min(tl.getX(), br.getX());
|
| 456 |
lastReadLine = Math.min(tl.getY(), br.getY());
|
| 457 |
break;
|
| 458 |
} |
| 459 |
} |
| 460 |
} |
| 461 |
} |
| 462 |
|
| 463 |
public void setView(double dWorldTLX, double dWorldTLY, |
| 464 |
double dWorldBRX, double dWorldBRY, |
| 465 |
int nWidth, int nHeight) throws GdalException { |
| 466 |
overviewWidth = width; |
| 467 |
overviewHeight = height; |
| 468 |
Point2D tl = worldToRaster(new Point2D.Double(dWorldTLX, dWorldTLY)); |
| 469 |
Point2D br = worldToRaster(new Point2D.Double(dWorldBRX, dWorldBRY)); |
| 470 |
// Calcula cual es la primera l?nea a leer;
|
| 471 |
currentViewWidth = nWidth; |
| 472 |
currentViewHeight = nHeight; |
| 473 |
// wcWidth = Math.abs(br.getX() - tl.getX());
|
| 474 |
|
| 475 |
currentViewX = Math.min(tl.getX(), br.getX());
|
| 476 |
|
| 477 |
viewportScaleX = (double) currentViewWidth / (br.getX() - tl.getX());
|
| 478 |
viewportScaleY = (double) currentViewHeight / (br.getY() - tl.getY());
|
| 479 |
stepX = 1D / viewportScaleX;
|
| 480 |
stepY = 1D / viewportScaleY;
|
| 481 |
|
| 482 |
lastReadLine = Math.min(tl.getY(), br.getY());
|
| 483 |
|
| 484 |
//Para lectura del renderizado (ARGB). readWindow selecciona las bandas que necesita.
|
| 485 |
|
| 486 |
// calcula el overview a usar
|
| 487 |
gdalBands = new GdalRasterBand[4]; |
| 488 |
calcOverview(tl, br); |
| 489 |
} |
| 490 |
|
| 491 |
/**
|
| 492 |
* Selecciona bandas y overview en el objeto GdalRasterBand[] para el n?mero de bandas solicitado.
|
| 493 |
* @param nbands N?mero de bandas solicitado.
|
| 494 |
* @throws GdalException
|
| 495 |
*/
|
| 496 |
public void selectGdalBands(int nbands) throws GdalException { |
| 497 |
gdalBands = new GdalRasterBand[nbands];
|
| 498 |
// Selecciona las bandas y los overviews necesarios
|
| 499 |
gdalBands[0] = getRasterBand(1); |
| 500 |
for (int i = 0; i < nbands; i++) |
| 501 |
gdalBands[i] = gdalBands[0];
|
| 502 |
|
| 503 |
assignDataTypeFromGdalRasterBands(gdalBands); |
| 504 |
// setDataType(gdalBands[0].getRasterDataType());
|
| 505 |
|
| 506 |
for (int i = 2; i <= nbands; i++) { |
| 507 |
if (getRasterCount() >= i) {
|
| 508 |
gdalBands[i - 1] = getRasterBand(i);
|
| 509 |
for (int j = i; j < nbands; j++) |
| 510 |
gdalBands[j] = gdalBands[i - 1];
|
| 511 |
} |
| 512 |
} |
| 513 |
|
| 514 |
if (currentOverview > 0) { |
| 515 |
gdalBands[0] = gdalBands[0].getOverview(currentOverview); |
| 516 |
for (int i = 2; i <= nbands; i++) { |
| 517 |
if (getRasterCount() >= i)
|
| 518 |
gdalBands[i - 1] = gdalBands[i - 1].getOverview(currentOverview); |
| 519 |
} |
| 520 |
} |
| 521 |
} |
| 522 |
|
| 523 |
int lastY = -1; |
| 524 |
|
| 525 |
/**
|
| 526 |
* Lee una l?nea de bytes
|
| 527 |
* @param line Buffer donde se cargan los datos
|
| 528 |
* @param initOffset Desplazamiento inicial desde el margen inzquierdo. Esto es necesario para cuando
|
| 529 |
* se supersamplea ya que cada pixel de imagen ocupa muchos pixeles de pantalla y puede empezar a dibujarse
|
| 530 |
* por la izquierda a mitad de pixel
|
| 531 |
* @param gdalBuffer Buffer con la l?nea de datos original
|
| 532 |
*/
|
| 533 |
private void readLine(byte[][] line, double initOffset, GdalBuffer[] gdalBuffer) { |
| 534 |
double j = 0D; |
| 535 |
int i = 0; |
| 536 |
for (int iBand = 0; iBand < gdalBuffer.length; iBand++) { |
| 537 |
for (i = 0, j = initOffset; i < currentViewWidth && j < gdalBuffer[0].getSize(); i++, j += stepX) { |
| 538 |
line[iBand][i] = gdalBuffer[iBand].buffByte[(int) j];
|
| 539 |
} |
| 540 |
} |
| 541 |
} |
| 542 |
|
| 543 |
/**
|
| 544 |
* Lee una l?nea de shorts
|
| 545 |
* @param line Buffer donde se cargan los datos
|
| 546 |
* @param initOffset Desplazamiento inicial desde el margen inzquierdo. Esto es necesario para cuando
|
| 547 |
* se supersamplea ya que cada pixel de imagen ocupa muchos pixeles de pantalla y puede empezar a dibujarse
|
| 548 |
* por la izquierda a mitad de pixel
|
| 549 |
* @param gdalBuffer Buffer con la l?nea de datos original
|
| 550 |
*/
|
| 551 |
private void readLine(short[][] line, double initOffset, GdalBuffer[] gdalBuffer) { |
| 552 |
double j = 0D; |
| 553 |
int i = 0; |
| 554 |
for (int iBand = 0; iBand < gdalBuffer.length; iBand++) { |
| 555 |
for (i = 0, j = initOffset; i < currentViewWidth && j < gdalBuffer[0].getSize(); i++, j += stepX) { |
| 556 |
line[iBand][i] = (short) (gdalBuffer[iBand].buffShort[(int) j] & 0xffff); |
| 557 |
} |
| 558 |
} |
| 559 |
} |
| 560 |
|
| 561 |
/**
|
| 562 |
* Lee una l?nea de ints
|
| 563 |
* @param line Buffer donde se cargan los datos
|
| 564 |
* @param initOffset Desplazamiento inicial desde el margen inzquierdo. Esto es necesario para cuando
|
| 565 |
* se supersamplea ya que cada pixel de imagen ocupa muchos pixeles de pantalla y puede empezar a dibujarse
|
| 566 |
* por la izquierda a mitad de pixel
|
| 567 |
* @param gdalBuffer Buffer con la l?nea de datos original
|
| 568 |
*/
|
| 569 |
private void readLine(int[][] line, double initOffset, GdalBuffer[] gdalBuffer) { |
| 570 |
double j = 0D; |
| 571 |
int i = 0; |
| 572 |
for (int iBand = 0; iBand < gdalBuffer.length; iBand++) { |
| 573 |
for (i = 0, j = initOffset; i < currentViewWidth && j < gdalBuffer[0].getSize(); i++, j += stepX) { |
| 574 |
line[iBand][i] = (gdalBuffer[iBand].buffInt[(int) j] & 0xffffffff); |
| 575 |
} |
| 576 |
} |
| 577 |
} |
| 578 |
|
| 579 |
/**
|
| 580 |
* Lee una l?nea de float
|
| 581 |
* @param line Buffer donde se cargan los datos
|
| 582 |
* @param initOffset Desplazamiento inicial desde el margen izquierdo. Esto es necesario para cuando
|
| 583 |
* se supersamplea ya que cada pixel de imagen ocupa muchos pixeles de pantalla y puede empezar a dibujarse
|
| 584 |
* por la izquierda a mitad de pixel
|
| 585 |
* @param gdalBuffer Buffer con la l?nea de datos original
|
| 586 |
*/
|
| 587 |
private void readLine(float[][] line, double initOffset, GdalBuffer[] gdalBuffer) { |
| 588 |
double j = 0D; |
| 589 |
int i = 0; |
| 590 |
for (int iBand = 0; iBand < gdalBuffer.length; iBand++) { |
| 591 |
for (i = 0, j = initOffset; i < currentViewWidth && j < gdalBuffer[0].getSize(); i++, j += stepX) { |
| 592 |
line[iBand][i] = gdalBuffer[iBand].buffFloat[(int) j];
|
| 593 |
} |
| 594 |
} |
| 595 |
} |
| 596 |
|
| 597 |
/**
|
| 598 |
* Lee una l?nea de doubles
|
| 599 |
* @param line Buffer donde se cargan los datos
|
| 600 |
* @param initOffset Desplazamiento inicial desde el margen inzquierdo. Esto es necesario para cuando
|
| 601 |
* se supersamplea ya que cada pixel de imagen ocupa muchos pixeles de pantalla y puede empezar a dibujarse
|
| 602 |
* por la izquierda a mitad de pixel
|
| 603 |
* @param gdalBuffer Buffer con la l?nea de datos original
|
| 604 |
*/
|
| 605 |
private void readLine(double[][] line, double initOffset, GdalBuffer[] gdalBuffer) { |
| 606 |
double j = 0D; |
| 607 |
int i = 0; |
| 608 |
for (int iBand = 0; iBand < gdalBuffer.length; iBand++) { |
| 609 |
for (i = 0, j = initOffset; i < currentViewWidth && j < gdalBuffer[0].getSize(); i++, j += stepX) { |
| 610 |
line[iBand][i] = gdalBuffer[iBand].buffDouble[(int) j];
|
| 611 |
} |
| 612 |
} |
| 613 |
} |
| 614 |
|
| 615 |
/**
|
| 616 |
* Lee una l?nea completa del raster y devuelve un array del tipo correcto. Esta funci?n es util
|
| 617 |
* para una lectura rapida de todo el fichero sin necesidad de asignar vista.
|
| 618 |
* @param nLine N?mero de l?nea a leer
|
| 619 |
* @param band Banda requerida
|
| 620 |
* @return Object que es un array unidimendional del tipo de datos del raster
|
| 621 |
* @throws GdalException
|
| 622 |
*/
|
| 623 |
public Object readCompleteLine(int nLine, int band) throws GdalException { |
| 624 |
GdalRasterBand gdalBand = super.getRasterBand(band + 1); |
| 625 |
GdalBuffer gdalBuf = null;
|
| 626 |
|
| 627 |
gdalBuf = gdalBand.readRaster(0, nLine, getRasterXSize(), 1, getRasterXSize(), 1, dataType[band]); |
| 628 |
|
| 629 |
if (dataType[band] == GDT_Byte)
|
| 630 |
return gdalBuf.buffByte;
|
| 631 |
|
| 632 |
if (dataType[band] == GDT_Int16 || dataType[band] == GDT_UInt16)
|
| 633 |
return gdalBuf.buffShort;
|
| 634 |
|
| 635 |
if (dataType[band] == GDT_Int32 || dataType[band] == GDT_UInt32)
|
| 636 |
return gdalBuf.buffInt;
|
| 637 |
|
| 638 |
if (dataType[band] == GDT_Float32)
|
| 639 |
return gdalBuf.buffFloat;
|
| 640 |
|
| 641 |
if (dataType[band] == GDT_Float64)
|
| 642 |
return gdalBuf.buffDouble;
|
| 643 |
|
| 644 |
if (dataType[band] == GDT_CInt16 || dataType[band] == GDT_CInt32 ||
|
| 645 |
dataType[band] == GDT_CFloat32 || dataType[band] == GDT_CFloat64) |
| 646 |
return null; |
| 647 |
|
| 648 |
return null; |
| 649 |
} |
| 650 |
|
| 651 |
/**
|
| 652 |
* Lee una bloque completo del raster y devuelve un array tridimensional del tipo correcto. Esta funci?n es util
|
| 653 |
* para una lectura rapida de todo el fichero sin necesidad de asignar vista.
|
| 654 |
* @param nLine N?mero de l?nea a leer
|
| 655 |
* @param band Banda requerida
|
| 656 |
* @return Object que es un array unidimendional del tipo de datos del raster
|
| 657 |
* @throws GdalException
|
| 658 |
*/
|
| 659 |
public Object readBlock(int pos, int blockHeight, double scale) throws GdalException, ProcessInterruptedException { |
| 660 |
bBandNr = super.getRasterCount();
|
| 661 |
int widthBuffer = (int)(getRasterXSize() * scale); |
| 662 |
int heightBuffer = (int)(blockHeight * scale); |
| 663 |
|
| 664 |
RasterTask task = RasterTaskQueue.get(Thread.currentThread().getId() + ""); |
| 665 |
|
| 666 |
GdalRasterBand[] gdalBand = new GdalRasterBand[bBandNr]; |
| 667 |
for (int iBand = 0; iBand < gdalBand.length; iBand++) |
| 668 |
gdalBand[iBand] = super.getRasterBand(iBand + 1); |
| 669 |
|
| 670 |
GdalBuffer[] gdalBuf = new GdalBuffer[bBandNr]; |
| 671 |
|
| 672 |
if (dataType[0] == GDT_Byte) { |
| 673 |
byte[][][] buf = new byte[bBandNr][heightBuffer][widthBuffer]; |
| 674 |
for (int iBand = 0; iBand < gdalBuf.length; iBand++) { |
| 675 |
gdalBuf[iBand] = gdalBand[iBand].readRaster(0, pos, getRasterXSize(), blockHeight, widthBuffer, heightBuffer, dataType[0]); |
| 676 |
for (int iRow = 0; iRow < heightBuffer; iRow++) { |
| 677 |
for (int iCol = 0; iCol < widthBuffer; iCol++) |
| 678 |
buf[iBand][iRow][iCol] = gdalBuf[iBand].buffByte[iRow * widthBuffer + iCol]; |
| 679 |
if(task.getEvent() != null) |
| 680 |
task.manageEvent(task.getEvent()); |
| 681 |
} |
| 682 |
gdalBuf[iBand].buffByte = null;
|
| 683 |
} |
| 684 |
return buf;
|
| 685 |
} else if (dataType[0] == GDT_CInt16 || dataType[0] == GDT_Int16 || dataType[0] == GDT_UInt16) { |
| 686 |
short[][][] buf = new short[bBandNr][heightBuffer][widthBuffer]; |
| 687 |
for (int iBand = 0; iBand < gdalBuf.length; iBand++) { |
| 688 |
gdalBuf[iBand] = gdalBand[iBand].readRaster(0, pos, getRasterXSize(), blockHeight, widthBuffer, heightBuffer, dataType[0]); |
| 689 |
for (int iRow = 0; iRow < heightBuffer; iRow++) { |
| 690 |
for (int iCol = 0; iCol < widthBuffer; iCol++) |
| 691 |
buf[iBand][iRow][iCol] = gdalBuf[iBand].buffShort[iRow * widthBuffer + iCol]; |
| 692 |
if(task.getEvent() != null) |
| 693 |
task.manageEvent(task.getEvent()); |
| 694 |
} |
| 695 |
gdalBuf[iBand].buffShort = null;
|
| 696 |
} |
| 697 |
return buf;
|
| 698 |
} else if (dataType[0] == GDT_CInt32 || dataType[0] == GDT_Int32 || dataType[0] == GDT_UInt32) { |
| 699 |
int[][][] buf = new int[bBandNr][heightBuffer][widthBuffer]; |
| 700 |
for (int iBand = 0; iBand < gdalBuf.length; iBand++) { |
| 701 |
gdalBuf[iBand] = gdalBand[iBand].readRaster(0, pos, getRasterXSize(), blockHeight, widthBuffer, heightBuffer, dataType[0]); |
| 702 |
for (int iRow = 0; iRow < heightBuffer; iRow++) { |
| 703 |
for (int iCol = 0; iCol < widthBuffer; iCol++) |
| 704 |
buf[iBand][iRow][iCol] = gdalBuf[iBand].buffInt[iRow * widthBuffer + iCol]; |
| 705 |
if(task.getEvent() != null) |
| 706 |
task.manageEvent(task.getEvent()); |
| 707 |
} |
| 708 |
gdalBuf[iBand].buffInt = null;
|
| 709 |
} |
| 710 |
return buf;
|
| 711 |
} else if(dataType[0] == GDT_Float32 || dataType[0] == GDT_CFloat32) { |
| 712 |
float[][][] buf = new float[bBandNr][heightBuffer][widthBuffer]; |
| 713 |
for (int iBand = 0; iBand < gdalBuf.length; iBand++) { |
| 714 |
gdalBuf[iBand] = gdalBand[iBand].readRaster(0, pos, getRasterXSize(), blockHeight, widthBuffer, heightBuffer, dataType[0]); |
| 715 |
for (int iRow = 0; iRow < heightBuffer; iRow++) { |
| 716 |
for (int iCol = 0; iCol < widthBuffer; iCol++) |
| 717 |
buf[iBand][iRow][iCol] = gdalBuf[iBand].buffFloat[iRow * widthBuffer + iCol]; |
| 718 |
if(task.getEvent() != null) |
| 719 |
task.manageEvent(task.getEvent()); |
| 720 |
} |
| 721 |
gdalBuf[iBand].buffFloat = null;
|
| 722 |
} |
| 723 |
return buf;
|
| 724 |
} else if(dataType[0] == GDT_Float64 || dataType[0] == GDT_CFloat64) { |
| 725 |
double[][][] buf = new double[bBandNr][heightBuffer][widthBuffer]; |
| 726 |
for (int iBand = 0; iBand < gdalBuf.length; iBand++) { |
| 727 |
gdalBuf[iBand] = gdalBand[iBand].readRaster(0, pos, getRasterXSize(), blockHeight, widthBuffer, heightBuffer, dataType[0]); |
| 728 |
for (int iRow = 0; iRow < heightBuffer; iRow++) { |
| 729 |
for (int iCol = 0; iCol < widthBuffer; iCol++) |
| 730 |
buf[iBand][iRow][iCol] = gdalBuf[iBand].buffDouble[iRow * widthBuffer + iCol]; |
| 731 |
if(task.getEvent() != null) |
| 732 |
task.manageEvent(task.getEvent()); |
| 733 |
} |
| 734 |
gdalBuf[iBand].buffDouble = null;
|
| 735 |
} |
| 736 |
return buf;
|
| 737 |
} |
| 738 |
|
| 739 |
return null; |
| 740 |
} |
| 741 |
|
| 742 |
/**
|
| 743 |
* Lectura de una l?nea de datos.
|
| 744 |
* @param line
|
| 745 |
* @throws GdalException
|
| 746 |
*/
|
| 747 |
public void readLine(Object line) throws GdalException { |
| 748 |
int w = (int) (Math.ceil(((double)currentViewWidth)*stepX) + 1); |
| 749 |
int x = (int) (currentViewX); |
| 750 |
int y = (int) (lastReadLine); |
| 751 |
GdalBuffer r = null, g = null, b = null; |
| 752 |
GdalBuffer a = new GdalBuffer();
|
| 753 |
|
| 754 |
while(y >= gdalBands[0].getRasterBandYSize()) |
| 755 |
y--; |
| 756 |
|
| 757 |
if (x+w > gdalBands[0].getRasterBandXSize()) |
| 758 |
w = gdalBands[0].getRasterBandXSize()-x;
|
| 759 |
|
| 760 |
if(gdalBands[0].getRasterColorTable() != null) { |
| 761 |
palette = new DataStoreColorTable(gdalColorTable2ColorItems(gdalBands[0].getRasterColorTable()), false); |
| 762 |
r = gdalBands[0].readRaster(x, y, w, 1, w, 1, dataType[0]); |
| 763 |
} else {
|
| 764 |
a.buffByte = new byte[w]; |
| 765 |
r = gdalBands[0].readRaster(x, y, w, 1, w, 1, dataType[0]); |
| 766 |
g = b = r; |
| 767 |
if (getRasterCount() > 1 && gdalBands[1] != null) |
| 768 |
g = gdalBands[1].readRaster(x, y, w, 1, w, 1, dataType[0]); |
| 769 |
if (getRasterCount() > 2 && gdalBands[2] != null) |
| 770 |
b = gdalBands[2].readRaster(x, y, w, 1, w, 1, dataType[0]); |
| 771 |
} |
| 772 |
|
| 773 |
lastReadLine += stepY; |
| 774 |
|
| 775 |
double initOffset = Math.abs(currentViewX - ((int)currentViewX)); |
| 776 |
GdalBuffer[] bands = {r, g, b};
|
| 777 |
|
| 778 |
if (dataType[0] == GDT_Byte) |
| 779 |
readLine((byte[][])line, initOffset, bands); |
| 780 |
else if (dataType[0] == GDT_CInt16 || dataType[0] == GDT_Int16 || dataType[0] == GDT_UInt16) |
| 781 |
readLine((short[][])line, initOffset, bands); |
| 782 |
else if (dataType[0] == GDT_CInt32 || dataType[0] == GDT_Int32 || dataType[0] == GDT_UInt32) |
| 783 |
readLine((int[][])line, initOffset, bands); |
| 784 |
else if(dataType[0] == GDT_Float32 || dataType[0] == GDT_CFloat32) |
| 785 |
readLine((float[][])line, initOffset, bands); |
| 786 |
else if(dataType[0] == GDT_Float64 || dataType[0] == GDT_CFloat64) |
| 787 |
readLine((double[][])line, initOffset, bands); |
| 788 |
|
| 789 |
return;
|
| 790 |
} |
| 791 |
|
| 792 |
private List<ColorItem> gdalColorTable2ColorItems(GdalColorTable table) { |
| 793 |
try {
|
| 794 |
List<ColorItem> colorItems = new ArrayList<ColorItem>(); |
| 795 |
for (int iEntry = 0; iEntry < table.getColorEntryCount(); iEntry++) { |
| 796 |
GdalColorEntry entry = table.getColorEntryAsRGB(iEntry); |
| 797 |
|
| 798 |
ColorItem colorItem = new ColorItemImpl();
|
| 799 |
colorItem.setNameClass("");
|
| 800 |
colorItem.setValue(iEntry); |
| 801 |
colorItem.setColor(new Color( (int) (entry.c1 & 0xff), |
| 802 |
(int) (entry.c2 & 0xff), |
| 803 |
(int) (entry.c3 & 0xff), |
| 804 |
(int) (entry.c4 & 0xff))); |
| 805 |
|
| 806 |
colorItems.add(colorItem); |
| 807 |
} |
| 808 |
return colorItems;
|
| 809 |
} catch (GdalException ex) {
|
| 810 |
// No se crea la paleta
|
| 811 |
} |
| 812 |
return null; |
| 813 |
} |
| 814 |
|
| 815 |
|
| 816 |
/**
|
| 817 |
* Cuando se hace una petici?n de carga de buffer la extensi?n pedida puede
|
| 818 |
* estar ajustada a la extensi?n del raster o no estarlo. En caso de no
|
| 819 |
* estarlo los pixeles del buffer que caen fuera de la extensi?n del raster
|
| 820 |
* tendr?n valor de NoData. Esta funci?n calcula en que pixel del buffer hay
|
| 821 |
* que empezar a escribir en caso de que este sea mayor que los datos a leer.
|
| 822 |
*
|
| 823 |
* @param dWorldTLX Posici?n X superior izquierda en coord reales
|
| 824 |
* @param dWorldTLY Posici?n Y superior izquierda en coord reales
|
| 825 |
* @param dWorldBRX Posici?n X inferior derecha en coord reales
|
| 826 |
* @param dWorldBRY Posici?n Y inferior derecha en coord reales
|
| 827 |
* @param nWidth Ancho en pixeles del buffer
|
| 828 |
* @param nHeight Alto en pixeles del buffer
|
| 829 |
* @return desplazamiento dentro del buffer en X e Y
|
| 830 |
*/
|
| 831 |
private int[] calcStepBuffer(Extent dataExtent, int nWidth, int nHeight, int[] stpBuffer) { |
| 832 |
Extent imageExtent = getExtentWithoutRot(); |
| 833 |
Extent ajustDataExtent = RasterLocator.getManager().getRasterUtils().calculateAdjustedView(dataExtent, imageExtent); |
| 834 |
if(!RasterLocator.getManager().getRasterUtils().compareExtents(dataExtent, ajustDataExtent)){
|
| 835 |
Point2D p1 = worldToRasterWithoutRot(new Point2D.Double(ajustDataExtent.minX(), ajustDataExtent.maxY())); |
| 836 |
Point2D p2 = worldToRasterWithoutRot(new Point2D.Double(ajustDataExtent.maxX(), ajustDataExtent.minY())); |
| 837 |
Point2D p3 = worldToRasterWithoutRot(new Point2D.Double(dataExtent.minX(), dataExtent.maxY())); |
| 838 |
// Point2D p4 = worldToRasterWithoutRot(new Point2D.Double(dataExtent.maxX(), dataExtent.minY()));
|
| 839 |
//Ese es el ancho y alto q tendr?a el buffer en caso de haberse ajustado
|
| 840 |
int w = (int)Math.abs(Math.ceil(p2.getX()) - Math.floor(p1.getX())); |
| 841 |
int h = (int)Math.abs(Math.floor(p1.getY()) - Math.ceil(p2.getY())); |
| 842 |
|
| 843 |
stpBuffer[0] = (int)(p1.getX() + (-p3.getX())); |
| 844 |
stpBuffer[1] = (int)(p1.getY() + (-p3.getY())); |
| 845 |
stpBuffer[2] = stpBuffer[0] + w; |
| 846 |
stpBuffer[3] = stpBuffer[1] + h; |
| 847 |
return new int[]{w, h}; |
| 848 |
} |
| 849 |
return new int[]{nWidth, nHeight}; |
| 850 |
} |
| 851 |
|
| 852 |
/**
|
| 853 |
* Lee una ventana de datos sin resampleo a partir de coordenadas reales.
|
| 854 |
* @param buf Buffer donde se almacenan los datos
|
| 855 |
* @param bandList Lista de bandas que queremos leer y sobre que bandas del buffer de destino queremos escribirlas
|
| 856 |
* @param dWorldTLX Posici?n X superior izquierda en coord reales
|
| 857 |
* @param dWorldTLY Posici?n Y superior izquierda en coord reales
|
| 858 |
* @param dWorldBRX Posici?n X inferior derecha en coord reales
|
| 859 |
* @param dWorldBRY Posici?n Y inferior derecha en coord reales
|
| 860 |
* @param nWidth Ancho en pixeles del buffer
|
| 861 |
* @param nHeight Alto en pixeles del buffer
|
| 862 |
* @throws GdalException
|
| 863 |
*/
|
| 864 |
public void readWindow(Buffer buf, BandList bandList, double ulx, double uly,double lrx, double lry, |
| 865 |
int nWidth, int nHeight, boolean adjustToExtent, TaskStatus status) throws GdalException, ProcessInterruptedException { |
| 866 |
Extent petExtent = new ExtentImpl(ulx, uly, lrx, lry);
|
| 867 |
setView(ulx, uly, lrx, lry, nWidth, nHeight); |
| 868 |
Point2D tl = worldToRaster(new Point2D.Double(ulx, uly)); |
| 869 |
Point2D br = worldToRaster(new Point2D.Double(lrx, lry)); |
| 870 |
|
| 871 |
if(tl.getX() > br.getX())
|
| 872 |
tl.setLocation(tl.getX() - 1, tl.getY());
|
| 873 |
else
|
| 874 |
br.setLocation(br.getX() - 1, br.getY());
|
| 875 |
|
| 876 |
if(tl.getY() > br.getY())
|
| 877 |
tl.setLocation(tl.getX(), tl.getY() - 1);
|
| 878 |
else
|
| 879 |
br.setLocation(br.getX(), br.getY() - 1);
|
| 880 |
|
| 881 |
if(gdalBands.length == 0) |
| 882 |
return;
|
| 883 |
|
| 884 |
selectGdalBands(/*buf.getBandCount()*/getRasterCount());
|
| 885 |
|
| 886 |
int x = (int) Math.round(Math.min(tl.getX(), br.getX())); |
| 887 |
int y = (int) Math.round(Math.min(tl.getY(), br.getY())); |
| 888 |
|
| 889 |
int[] stpBuffer = new int[]{0, 0 , buf.getWidth(), buf.getHeight()}; |
| 890 |
//Si el buffer no se ajusta al extent entonces calculamos en que posici?n comienza a escribirse dentro del buffer
|
| 891 |
//ya que lo que cae fuera ser?n valores NoData
|
| 892 |
if(!adjustToExtent){
|
| 893 |
int[] wh = calcStepBuffer(petExtent, nWidth, nHeight, stpBuffer); |
| 894 |
if(x < 0) |
| 895 |
x = 0;
|
| 896 |
if(y < 0) |
| 897 |
y = 0;
|
| 898 |
readDataCachedBuffer(buf, bandList, new int[]{x, y, wh[0], wh[1]}, |
| 899 |
wh[0], wh[1], 0, 0, stpBuffer, status); |
| 900 |
return;
|
| 901 |
} |
| 902 |
|
| 903 |
readDataCachedBuffer(buf, bandList, new int[]{x, y, nWidth, nHeight}, |
| 904 |
nWidth, nHeight, 0, 0, stpBuffer, status); |
| 905 |
} |
| 906 |
|
| 907 |
public void readWindow(Buffer buf, BandList bandList, Extent ext, Rectangle adjustedWindow, TaskStatus status) throws GdalException, ProcessInterruptedException { |
| 908 |
setView(ext.getULX(), ext.getULY(), ext.getLRX(), ext.getLRY(), buf.getWidth(), buf.getHeight()); |
| 909 |
|
| 910 |
if(gdalBands.length == 0) |
| 911 |
return;
|
| 912 |
|
| 913 |
selectGdalBands(getRasterCount()); |
| 914 |
|
| 915 |
int[] stpBuffer = new int[]{0, 0 , buf.getWidth(), buf.getHeight()}; |
| 916 |
|
| 917 |
adjustedWindow = getAdjustedWindowInOverviewCoordinates(adjustedWindow); |
| 918 |
|
| 919 |
readDataCachedBuffer(buf, |
| 920 |
bandList, |
| 921 |
new int[]{(int)adjustedWindow.getX(), (int)adjustedWindow.getY(), (int)adjustedWindow.getWidth(), (int)adjustedWindow.getHeight()}, |
| 922 |
buf.getWidth(), |
| 923 |
buf.getHeight(), |
| 924 |
0, 0, stpBuffer, status); |
| 925 |
} |
| 926 |
|
| 927 |
/**
|
| 928 |
* Adjust the request rectangle to the overview size. The requests in Gdal have to be
|
| 929 |
* in the overview scale
|
| 930 |
* @param adjustedWindow
|
| 931 |
* @return
|
| 932 |
*/
|
| 933 |
private Rectangle getAdjustedWindowInOverviewCoordinates(Rectangle adjustedWindow) { |
| 934 |
int nWidth = (int)(((long)adjustedWindow.getWidth() * overviewWidth) / width); |
| 935 |
int nHeight = (int)(((long)adjustedWindow.getHeight() * overviewHeight) / height); |
| 936 |
int x = (int)(((long)adjustedWindow.getX() * (long)overviewWidth) / (long)width); |
| 937 |
int y = (int) (((long)adjustedWindow.getY() * (long)overviewHeight) / (long)height); |
| 938 |
return new Rectangle(x, y, nWidth, nHeight); |
| 939 |
} |
| 940 |
|
| 941 |
/**
|
| 942 |
* Lee una ventana de datos con resampleo a partir de coordenadas reales. Este m?todo lee la
|
| 943 |
* ventana de una vez cargando los datos de un golpe en el buffer. Las coordenadas se solicitan
|
| 944 |
* en coordenadas del mundo real por lo que estas pueden caer en cualquier parte de un pixel.
|
| 945 |
* Esto se hace m?s evidente cuando supersampleamos en la petici?n, es decir el buffer de de
|
| 946 |
* mayor tama?o que el n?mero de pixels solicitado.
|
| 947 |
*
|
| 948 |
* Para resolver esto escribiremos con la funci?n readRaster los datos sobre un buffer mayor
|
| 949 |
* que el solicitado. Despu?s calcularemos el desplazamiento en pixels dentro de este buffer
|
| 950 |
* de mayor tama?o hasta llegar a la coordenada real donde comienza la petici?n real que ha
|
| 951 |
* hecho el usuario. Esto es as? porque cuando supersampleamos no queremos los pixeles del
|
| 952 |
* raster de disco completos sino que en los bordes del buffer quedan cortados.
|
| 953 |
*
|
| 954 |
* @param buf Buffer donde se almacenan los datos
|
| 955 |
* @param bandList Lista de bandas que queremos leer y sobre que bandas del buffer de destino queremos escribirlas
|
| 956 |
* @param dWorldTLX Posici?n X superior izquierda en coord reales
|
| 957 |
* @param dWorldTLY Posici?n Y superior izquierda en coord reales
|
| 958 |
* @param dWorldBRX Posici?n X inferior derecha en coord reales
|
| 959 |
* @param dWorldBRY Posici?n Y inferior derecha en coord reales
|
| 960 |
* @param nWidth Ancho en pixeles de la petici?n
|
| 961 |
* @param nHeight Alto en pixeles de la petici?n
|
| 962 |
* @param bufWidth Ancho del buffer
|
| 963 |
* @param bufHeight Alto del buffer
|
| 964 |
* @throws GdalException
|
| 965 |
*/
|
| 966 |
public void readWindow(Buffer buf, BandList bandList, double ulx, double uly, double lrx, double lry, |
| 967 |
double nWidth, double nHeight, int bufWidth, int bufHeight, boolean adjustToExtent, TaskStatus status) throws GdalException, ProcessInterruptedException { |
| 968 |
Extent petExtent = new ExtentImpl(ulx, uly, lrx, lry);
|
| 969 |
setView(ulx, uly, lrx, lry, bufWidth, bufHeight); |
| 970 |
Point2D ul = worldToRaster(new Point2D.Double(ulx, uly)); |
| 971 |
Point2D lr = worldToRaster(new Point2D.Double(lrx, lry)); |
| 972 |
ul.setLocation(ul.getX() < 0 ? 1 : ul.getX(), ul.getY() < 0 ? 1 : ul.getY()); |
| 973 |
lr.setLocation(lr.getX() < 0 ? 1 : lr.getX(), lr.getY() < 0 ? 1 : lr.getY()); |
| 974 |
ul.setLocation(ul.getX() - 0.5, ul.getY() - 0.5); |
| 975 |
lr.setLocation(lr.getX() - 0.5, lr.getY() - 0.5); |
| 976 |
|
| 977 |
adjustPoints(ul, lr); |
| 978 |
|
| 979 |
if(gdalBands.length == 0) |
| 980 |
return;
|
| 981 |
|
| 982 |
selectGdalBands(/*buf.getBandCount()*/getRasterCount());
|
| 983 |
|
| 984 |
Rectangle requestWindow = new Rectangle( |
| 985 |
(int) Math.min(ul.getX(), lr.getX()), |
| 986 |
(int) Math.min(ul.getY(), lr.getY()), |
| 987 |
(int)nWidth,
|
| 988 |
(int)nHeight);
|
| 989 |
|
| 990 |
requestWindow = getAdjustedWindowInOverviewCoordinates(requestWindow); |
| 991 |
|
| 992 |
int[] stpBuffer = new int[]{0, 0 , buf.getWidth(), buf.getHeight()}; |
| 993 |
//Si el buffer no se ajusta al extent entonces calculamos en que posici?n comienza a escribirse dentro del buffer
|
| 994 |
//ya que lo que cae fuera ser?n valores NoData
|
| 995 |
if(!adjustToExtent){
|
| 996 |
int[] wh = calcStepBuffer(petExtent, bufWidth, bufHeight, stpBuffer); |
| 997 |
if(requestWindow.getX() < 0) |
| 998 |
requestWindow.setLocation(0, (int)requestWindow.getY()); |
| 999 |
if(requestWindow.getY() < 0) |
| 1000 |
requestWindow.setLocation((int)requestWindow.getX(), 0); |
| 1001 |
stpBuffer[0] = (int)((stpBuffer[0] * bufWidth) / requestWindow.getWidth()); |
| 1002 |
stpBuffer[1] = (int)((stpBuffer[1] * bufHeight) / requestWindow.getHeight()); |
| 1003 |
stpBuffer[2] = (int)((stpBuffer[2] * bufWidth) / requestWindow.getWidth()); |
| 1004 |
stpBuffer[3] = (int)((stpBuffer[3] * bufHeight) / requestWindow.getHeight()); |
| 1005 |
bufWidth = (int)Math.abs(stpBuffer[2] - stpBuffer[0]); |
| 1006 |
bufHeight = (int)Math.abs(stpBuffer[3] - stpBuffer[1]); |
| 1007 |
readDataCachedBuffer(buf, bandList, |
| 1008 |
new int[]{(int)requestWindow.getX(), (int)requestWindow.getY(), wh[0], wh[1]}, |
| 1009 |
bufWidth, bufHeight, 0, 0, stpBuffer, status); |
| 1010 |
return;
|
| 1011 |
} |
| 1012 |
|
| 1013 |
if ((requestWindow.getX() + requestWindow.getWidth()) > gdalBands[0].getRasterBandXSize()) |
| 1014 |
requestWindow.setSize((int)(gdalBands[0].getRasterBandXSize() - requestWindow.getX()), (int)requestWindow.getHeight()); |
| 1015 |
|
| 1016 |
if ((requestWindow.getY() + requestWindow.getHeight()) > gdalBands[0].getRasterBandYSize()) |
| 1017 |
requestWindow.setSize((int)requestWindow.getWidth(), (int)(gdalBands[0].getRasterBandYSize() - requestWindow.getY())); |
| 1018 |
|
| 1019 |
readDataCachedBuffer(buf, bandList, |
| 1020 |
new int[]{(int)requestWindow.getX(), (int)requestWindow.getY(), (int)requestWindow.getWidth(), (int)requestWindow.getHeight()}, |
| 1021 |
bufWidth, bufHeight, 0, 0, stpBuffer, status); |
| 1022 |
} |
| 1023 |
|
| 1024 |
private void adjustPoints(Point2D ul, Point2D lr) { |
| 1025 |
double a = (ul.getX() - (int)ul.getX()); |
| 1026 |
double b = (ul.getY() - (int)ul.getY()); |
| 1027 |
ul.setLocation( (a > 0.95 || a < 0.05) ? Math.round(ul.getX()) : ul.getX(), |
| 1028 |
(b > 0.95 || b < 0.05) ? Math.round(ul.getY()) : ul.getY()); |
| 1029 |
lr.setLocation( (a > 0.95 || a < 0.05) ? Math.round(lr.getX()) : lr.getX(), |
| 1030 |
(b > 0.95 || b < 0.05) ? Math.round(lr.getY()) : lr.getY()); |
| 1031 |
} |
| 1032 |
|
| 1033 |
/**
|
| 1034 |
* Lee una ventana de datos con resampleo a partir de coordenadas en pixeles. Este m?todo lee la
|
| 1035 |
* ventana de una vez cargando los datos de un golpe en el buffer.
|
| 1036 |
* @param buf Buffer donde se almacenan los datos
|
| 1037 |
* @param bandList Lista de bandas que queremos leer y sobre que bandas del buffer de destino queremos escribirlas
|
| 1038 |
* @param x Posici?n X en pixeles
|
| 1039 |
* @param y Posici?n Y en pixeles
|
| 1040 |
* @param w Ancho en pixeles
|
| 1041 |
* @param h Alto en pixeles
|
| 1042 |
* @param bufWidth Ancho del buffer
|
| 1043 |
* @param bufHeight Alto del buffer
|
| 1044 |
* @throws GdalException
|
| 1045 |
*/
|
| 1046 |
public void readWindow(Buffer buf, BandList bandList, int x, int y, int w, int h, TaskStatus status) throws GdalException, ProcessInterruptedException { |
| 1047 |
gdalBands = new GdalRasterBand[getRasterCount()];
|
| 1048 |
|
| 1049 |
if(buf.getWidth() == w && buf.getHeight() == h)
|
| 1050 |
isSupersampling = false;
|
| 1051 |
|
| 1052 |
if(gdalBands.length == 0) |
| 1053 |
return;
|
| 1054 |
|
| 1055 |
// Selecciona las bandas
|
| 1056 |
gdalBands[0] = getRasterBand(1); |
| 1057 |
|
| 1058 |
for(int iBand = 1; iBand < gdalBands.length; iBand++) |
| 1059 |
gdalBands[iBand] = getRasterBand(iBand + 1);
|
| 1060 |
|
| 1061 |
assignDataTypeFromGdalRasterBands(gdalBands); |
| 1062 |
|
| 1063 |
int[] stpBuffer = new int[]{0, 0 , buf.getWidth(), buf.getHeight()}; |
| 1064 |
readDataCachedBuffer(buf, bandList, new int[]{x, y, w, h}, buf.getWidth(), buf.getHeight(), 0, 0, stpBuffer, status); |
| 1065 |
} |
| 1066 |
|
| 1067 |
/**
|
| 1068 |
* Asigna el tipo de datos de las bandas a partir de una lista de GdalRasterBands
|
| 1069 |
* @param gdalBands
|
| 1070 |
* @throws GdalException
|
| 1071 |
*/
|
| 1072 |
private void assignDataTypeFromGdalRasterBands(GdalRasterBand[] gdalBands) throws GdalException { |
| 1073 |
int[] dt = new int[gdalBands.length]; |
| 1074 |
for (int i = 0; i < gdalBands.length; i++) { |
| 1075 |
if(gdalBands[i] != null) |
| 1076 |
dt[i] = gdalBands[i].getRasterDataType(); |
| 1077 |
} |
| 1078 |
setDataType(dt); |
| 1079 |
} |
| 1080 |
|
| 1081 |
/**
|
| 1082 |
* Lee una ventana de datos. Esta funci?n es usuada por
|
| 1083 |
* readWindow para coordenadas reales y readWindow en coordenadas pixel. Esta es una versi?n de readData pero
|
| 1084 |
* comprueba si el buffer es cacheado y si lo es pide por trozos para no intentar cargar desde gdal demasiados
|
| 1085 |
* datos.
|
| 1086 |
* @param buf Buffer donde se almacenan los datos
|
| 1087 |
* @param bandList Lista de bandas que queremos leer y sobre que bandas del buffer de destino queremos escribirlas
|
| 1088 |
* @param inputWindow
|
| 1089 |
* <UL>
|
| 1090 |
* <LI>inputWindow[0]:Posici?n X en pixeles de la imagen de entrada</LI>
|
| 1091 |
* <LI>inputWindow[1]:Posici?n Y en pixeles de la imagen de entrada</LI>
|
| 1092 |
* <LI>inputWindow[2]:Ancho en p?xeles a leer de la imagen de entrada</LI>
|
| 1093 |
* <LI>inputWindow[3]:Alto en p?xeles a leer de la imagen de entrada</LI>
|
| 1094 |
* </UL>
|
| 1095 |
* @param bufWidth Ancho del buffer de la imagen de entrada. Si no coincide con inputWindow[2] el propio gdal resamplea
|
| 1096 |
* @param bufHeight Alto del buffer de la imagen de entrada. Si no coincide con inputWindow[3] el propio gdal resamplea
|
| 1097 |
* @param stepX Desplazamiento en p?xeles en X a partir de la posici?n x. Este desplazamiento es util cuando hay un
|
| 1098 |
* supersampleo ya que puede ser que de los pixeles que est?n en el borde izquierdo de la petici?n solo queramos una
|
| 1099 |
* parte de ellos.
|
| 1100 |
* @param stepY Desplazamiento en p?xeles en Y a partir de la posici?n y. Este desplazamiento es util cuando hay un
|
| 1101 |
* supersampleo ya que puede ser que de los p?xeles que est?n en el borde superior de la petici?n solo queramos una
|
| 1102 |
* parte de ellos.
|
| 1103 |
* @param stepBuffer El buffer puede empezar a escribirse a partir de un pixel determinado y acabar de escribir antes
|
| 1104 |
* de fin de buffer. Este par?metro indica el desplazamiento desde el inicio del buffer y la posici?n final.
|
| 1105 |
* <UL>
|
| 1106 |
* <LI>stepBuffer[0]:Desplazamiento en X desde el inicio</LI>
|
| 1107 |
* <LI>stepBuffer[1]:Desplazamiento en Y desde el inicio</LI>
|
| 1108 |
* <LI>stepBuffer[2]:Posici?n X final m?s uno</LI>
|
| 1109 |
* <LI>stepBuffer[3]:Posici?n Y final m?s uno</LI>
|
| 1110 |
* </UL>
|
| 1111 |
* @throws GdalException
|
| 1112 |
*/
|
| 1113 |
private void readDataCachedBuffer(Buffer buf, |
| 1114 |
BandList bandList, |
| 1115 |
int[] inputWindow, |
| 1116 |
int bufWidth,
|
| 1117 |
int bufHeight,
|
| 1118 |
int stpX,
|
| 1119 |
int stpY,
|
| 1120 |
int[] stepBuffer, |
| 1121 |
TaskStatus status) throws GdalException, ProcessInterruptedException {
|
| 1122 |
if(buf.isCached()) {
|
| 1123 |
int nBlocks = (int)(buf.getHeight() / buf.getBlockHeight()); |
| 1124 |
int lastblock = buf.getHeight() - (nBlocks * buf.getBlockHeight());
|
| 1125 |
if(lastblock > 0) |
| 1126 |
nBlocks ++; |
| 1127 |
int initYSrc = inputWindow[1]; |
| 1128 |
int stepYSrc = (buf.getBlockHeight() * inputWindow[3]) / buf.getHeight(); |
| 1129 |
int lastBlockYSrc = (lastblock * inputWindow[3]) / buf.getHeight(); |
| 1130 |
int initYBuffer = 0; |
| 1131 |
for (int i = 0; i < nBlocks; i++) { |
| 1132 |
if(lastblock > 0 && i == (nBlocks - 1)) { |
| 1133 |
int[] newStepBuffer = new int[]{0, initYBuffer, stepBuffer[2], initYBuffer + lastblock}; |
| 1134 |
int[] newWindow = new int[]{inputWindow[0], initYSrc, inputWindow[2], lastBlockYSrc}; |
| 1135 |
readData(buf, |
| 1136 |
bandList, |
| 1137 |
newWindow, |
| 1138 |
bufWidth, lastblock, 0, 0, newStepBuffer); |
| 1139 |
} else {
|
| 1140 |
int[] newStepBuffer = new int[]{0, initYBuffer, stepBuffer[2], initYBuffer + buf.getBlockHeight()}; |
| 1141 |
int[] newWindow = new int[]{inputWindow[0], initYSrc, inputWindow[2], stepYSrc}; |
| 1142 |
readData(buf, |
| 1143 |
bandList, |
| 1144 |
newWindow, |
| 1145 |
bufWidth, buf.getBlockHeight(), 0, 0, newStepBuffer); |
| 1146 |
initYSrc += stepYSrc; |
| 1147 |
initYBuffer += buf.getBlockHeight(); |
| 1148 |
} |
| 1149 |
} |
| 1150 |
} else {
|
| 1151 |
readData(buf, bandList, inputWindow, bufWidth, bufHeight, 0, 0, stepBuffer); |
| 1152 |
} |
| 1153 |
} |
| 1154 |
|
| 1155 |
/**
|
| 1156 |
* Lee una ventana de datos. Esta funci?n es usuada por
|
| 1157 |
* readWindow para coordenadas reales y readWindow en coordenadas pixel.
|
| 1158 |
* @param buf Buffer donde se almacenan los datos
|
| 1159 |
* @param bandList Lista de bandas que queremos leer y sobre que bandas del buffer de destino queremos escribirlas
|
| 1160 |
* @param inputWindow
|
| 1161 |
* <UL>
|
| 1162 |
* <LI>inputWindow[0]:Posici?n X en pixeles de la imagen de entrada</LI>
|
| 1163 |
* <LI>inputWindow[1]:Posici?n Y en pixeles de la imagen de entrada</LI>
|
| 1164 |
* <LI>inputWindow[2]:Ancho en p?xeles a leer de la imagen de entrada</LI>
|
| 1165 |
* <LI>inputWindow[3]:Alto en p?xeles a leer de la imagen de entrada</LI>
|
| 1166 |
* </UL>
|
| 1167 |
* @param bufWidth Ancho del buffer de la imagen de entrada. Si no coincide con inputWindow[2] el propio gdal resamplea
|
| 1168 |
* @param bufHeight Alto del buffer de la imagen de entrada. Si no coincide con inputWindow[3] el propio gdal resamplea
|
| 1169 |
* @param stepX Desplazamiento en p?xeles en X a partir de la posici?n x. Este desplazamiento es util cuando hay un
|
| 1170 |
* supersampleo ya que puede ser que de los pixeles que est?n en el borde izquierdo de la petici?n solo queramos una
|
| 1171 |
* parte de ellos.
|
| 1172 |
* @param stepY Desplazamiento en p?xeles en Y a partir de la posici?n y. Este desplazamiento es util cuando hay un
|
| 1173 |
* supersampleo ya que puede ser que de los p?xeles que est?n en el borde superior de la petici?n solo queramos una
|
| 1174 |
* parte de ellos.
|
| 1175 |
* @param stepBuffer El buffer puede empezar a escribirse a partir de un pixel determinado y acabar de escribir antes
|
| 1176 |
* de fin de buffer. Este par?metro indica el desplazamiento desde el inicio del buffer y la posici?n final.
|
| 1177 |
* <UL>
|
| 1178 |
* <LI>stepBuffer[0]:Desplazamiento en X desde el inicio</LI>
|
| 1179 |
* <LI>stepBuffer[1]:Desplazamiento en Y desde el inicio</LI>
|
| 1180 |
* <LI>stepBuffer[2]:Posici?n X final m?s uno</LI>
|
| 1181 |
* <LI>stepBuffer[3]:Posici?n Y final m?s uno</LI>
|
| 1182 |
* </UL>
|
| 1183 |
* @throws GdalException
|
| 1184 |
*/
|
| 1185 |
private void readData(Buffer buf, |
| 1186 |
BandList bandList, |
| 1187 |
int[] inputWindow, |
| 1188 |
int bufWidth,
|
| 1189 |
int bufHeight,
|
| 1190 |
int stpX,
|
| 1191 |
int stpY,
|
| 1192 |
int[] stepBuffer) throws GdalException, ProcessInterruptedException { |
| 1193 |
|
| 1194 |
RasterTask task = RasterTaskQueue.get(Thread.currentThread().getId() + ""); |
| 1195 |
FileUtils fUtil = RasterLocator.getManager().getFileUtils(); |
| 1196 |
|
| 1197 |
GdalBuffer gdalBuf = null;
|
| 1198 |
for(int iBand = 0; iBand < gdalBands.length; iBand++) { |
| 1199 |
int[] drawableBands = bandList.getBufferBandToDraw(fileName, iBand); |
| 1200 |
if(drawableBands == null || (drawableBands.length == 1 && drawableBands[0] == -1)) |
| 1201 |
continue;
|
| 1202 |
int init = (int)((bufWidth * stpY) + stpX); //Pos inicial. Desplazamos stpX pixels hacia la derecha y bajamos stpY lineas |
| 1203 |
int pos = init;
|
| 1204 |
gdalBuf = gdalBands[iBand].readRaster( inputWindow[0],
|
| 1205 |
inputWindow[1],
|
| 1206 |
inputWindow[2],
|
| 1207 |
inputWindow[3],
|
| 1208 |
bufWidth, |
| 1209 |
bufHeight, |
| 1210 |
dataType[iBand]); |
| 1211 |
int lineInputWindow = 0; |
| 1212 |
if(dataType[iBand] == GdalDataset.GDT_Byte) {
|
| 1213 |
for (int line = stepBuffer[1]; line < stepBuffer[3]; line++) { |
| 1214 |
pos = (int)((bufWidth * (lineInputWindow - stepBuffer[0])) + init); |
| 1215 |
for (int col = stepBuffer[0]; col < stepBuffer[2]; col ++) { |
| 1216 |
for (int i = 0; i < drawableBands.length; i++) |
| 1217 |
buf.setElem(line, col, drawableBands[i], gdalBuf.buffByte[pos]); |
| 1218 |
pos ++; |
| 1219 |
} |
| 1220 |
lineInputWindow ++; |
| 1221 |
if(task.getEvent() != null) |
| 1222 |
task.manageEvent(task.getEvent()); |
| 1223 |
} |
| 1224 |
gdalBuf.buffByte = null;
|
| 1225 |
} else if((dataType[iBand] == GdalDataset.GDT_UInt16) || (dataType[iBand] == GdalDataset.GDT_Int16) || (dataType[iBand] == GdalDataset.GDT_CInt16)) { |
| 1226 |
for (int line = stepBuffer[1]; line < stepBuffer[3]; line++) { |
| 1227 |
pos = (int)((bufWidth * (lineInputWindow - stepBuffer[0])) + init); |
| 1228 |
for (int col = stepBuffer[0]; col < stepBuffer[2]; col ++) { |
| 1229 |
for (int i = 0; i < drawableBands.length; i++) |
| 1230 |
buf.setElem(line, col, drawableBands[i], gdalBuf.buffShort[pos]); |
| 1231 |
pos ++; |
| 1232 |
} |
| 1233 |
lineInputWindow ++; |
| 1234 |
if(task.getEvent() != null) |
| 1235 |
task.manageEvent(task.getEvent()); |
| 1236 |
} |
| 1237 |
gdalBuf.buffShort = null;
|
| 1238 |
} else if((dataType[iBand] == GdalDataset.GDT_UInt32) || (dataType[iBand] == GdalDataset.GDT_Int32) || (dataType[iBand] == GdalDataset.GDT_CInt32)) { |
| 1239 |
for (int line = stepBuffer[1]; line < stepBuffer[3]; line++) { |
| 1240 |
pos = (int)((bufWidth * (lineInputWindow - stepBuffer[0])) + init); |
| 1241 |
for (int col = stepBuffer[0]; col < stepBuffer[2]; col ++) { |
| 1242 |
for (int i = 0; i < drawableBands.length; i++) |
| 1243 |
buf.setElem(line, col, drawableBands[i], gdalBuf.buffInt[pos]); |
| 1244 |
pos ++; |
| 1245 |
} |
| 1246 |
lineInputWindow ++; |
| 1247 |
if(task.getEvent() != null) |
| 1248 |
task.manageEvent(task.getEvent()); |
| 1249 |
} |
| 1250 |
gdalBuf.buffInt = null;
|
| 1251 |
} else if(dataType[iBand] == GdalDataset.GDT_Float32) { |
| 1252 |
for (int line = stepBuffer[1]; line < stepBuffer[3]; line++) { |
| 1253 |
pos = (int)((bufWidth * (lineInputWindow - stepBuffer[0])) + init); |
| 1254 |
for (int col = stepBuffer[0]; col < stepBuffer[2]; col ++) { |
| 1255 |
for (int i = 0; i < drawableBands.length; i++) |
| 1256 |
buf.setElem(line, col, drawableBands[i], gdalBuf.buffFloat[pos]); |
| 1257 |
pos ++; |
| 1258 |
} |
| 1259 |
lineInputWindow ++; |
| 1260 |
if(task.getEvent() != null) |
| 1261 |
task.manageEvent(task.getEvent()); |
| 1262 |
} |
| 1263 |
gdalBuf.buffFloat = null;
|
| 1264 |
} else if(dataType[iBand] == GdalDataset.GDT_Float64) { |
| 1265 |
for (int line = stepBuffer[1]; line < stepBuffer[3]; line++) { |
| 1266 |
pos = (int)((bufWidth * (lineInputWindow - stepBuffer[0])) + init); |
| 1267 |
for (int col = stepBuffer[0]; col < stepBuffer[2]; col ++) { |
| 1268 |
for (int i = 0; i < drawableBands.length; i++) |
| 1269 |
buf.setElem(line, col, drawableBands[i], gdalBuf.buffDouble[pos]); |
| 1270 |
pos ++; |
| 1271 |
} |
| 1272 |
lineInputWindow ++; |
| 1273 |
if(task.getEvent() != null) |
| 1274 |
task.manageEvent(task.getEvent()); |
| 1275 |
} |
| 1276 |
gdalBuf.buffDouble = null;
|
| 1277 |
} |
| 1278 |
} |
| 1279 |
} |
| 1280 |
|
| 1281 |
/**
|
| 1282 |
* Lee una ventana de datos sin resampleo a partir de coordenadas en pixeles. Esta funci?n es usuada por
|
| 1283 |
* readWindow para coordenadas reales y readWindow en coordenadas pixel.
|
| 1284 |
* @param buf Buffer donde se almacenan los datos
|
| 1285 |
* @param bandList Lista de bandas que queremos leer y sobre que bandas del buffer de destino queremos escribirlas
|
| 1286 |
* @param x Posici?n X en pixeles
|
| 1287 |
* @param y Posici?n Y en pixeles
|
| 1288 |
* @param w Ancho en pixeles
|
| 1289 |
* @param yMax altura m?xima de y
|
| 1290 |
* @throws GdalException
|
| 1291 |
*/
|
| 1292 |
@SuppressWarnings("unused") |
| 1293 |
private void readDataByLine(Buffer buf, BandList bandList, int x, int y, int w, int yMax) throws GdalException, ProcessInterruptedException { |
| 1294 |
GdalBuffer gdalBuf = null;
|
| 1295 |
int rasterBufLine;
|
| 1296 |
RasterTask task = RasterTaskQueue.get(Thread.currentThread().getId() + ""); |
| 1297 |
FileUtils fUtil = RasterLocator.getManager().getFileUtils(); |
| 1298 |
|
| 1299 |
for(int iBand = 0; iBand < gdalBands.length; iBand++) { |
| 1300 |
int[] drawableBands = bandList.getBufferBandToDraw(fUtil.getFormatedRasterFileName(fileName), iBand); |
| 1301 |
if(drawableBands == null || (drawableBands.length == 1 && drawableBands[0] == -1)) |
| 1302 |
continue;
|
| 1303 |
if(dataType[iBand] == GdalDataset.GDT_Byte) {
|
| 1304 |
for (int line = y; line < yMax; line++) { |
| 1305 |
gdalBuf = gdalBands[iBand].readRaster(x, line, w, 1, w, 1, dataType[iBand]); |
| 1306 |
rasterBufLine = line - y; |
| 1307 |
for (int i = 0; i < drawableBands.length; i++) { |
| 1308 |
buf.setLineInBandByte(gdalBuf.buffByte, rasterBufLine, drawableBands[i]); |
| 1309 |
} |
| 1310 |
if(task.getEvent() != null) |
| 1311 |
task.manageEvent(task.getEvent()); |
| 1312 |
} |
| 1313 |
}else if((dataType[iBand] == GdalDataset.GDT_UInt16) || (dataType[iBand] == GdalDataset.GDT_Int16) || (dataType[iBand] == GdalDataset.GDT_CInt16)) { |
| 1314 |
for (int line = y; line < yMax; line++) { |
| 1315 |
gdalBuf = gdalBands[iBand].readRaster(x, line, w, 1, w, 1, dataType[iBand]); |
| 1316 |
rasterBufLine = line - y; |
| 1317 |
for (int i = 0; i < drawableBands.length; i++) { |
| 1318 |
buf.setLineInBandShort(gdalBuf.buffShort, rasterBufLine, drawableBands[i]); |
| 1319 |
} |
| 1320 |
if(task.getEvent() != null) |
| 1321 |
task.manageEvent(task.getEvent()); |
| 1322 |
} |
| 1323 |
}else if((dataType[iBand] == GdalDataset.GDT_UInt32) || (dataType[iBand] == GdalDataset.GDT_Int32) || (dataType[iBand] == GdalDataset.GDT_CInt32)) { |
| 1324 |
for (int line = y; line < yMax; line++) { |
| 1325 |
gdalBuf = gdalBands[iBand].readRaster(x, line, w, 1, w, 1, dataType[iBand]); |
| 1326 |
rasterBufLine = line - y; |
| 1327 |
for (int i = 0; i < drawableBands.length; i++) { |
| 1328 |
buf.setLineInBandInt(gdalBuf.buffInt, rasterBufLine, drawableBands[i]); |
| 1329 |
} |
| 1330 |
if(task.getEvent() != null) |
| 1331 |
task.manageEvent(task.getEvent()); |
| 1332 |
} |
| 1333 |
}else if(dataType[iBand] == GdalDataset.GDT_Float32){ |
| 1334 |
for (int line = y; line < yMax; line++) { |
| 1335 |
gdalBuf = gdalBands[iBand].readRaster(x, line, w, 1, w, 1, dataType[iBand]); |
| 1336 |
rasterBufLine = line - y; |
| 1337 |
for (int i = 0; i < drawableBands.length; i++) { |
| 1338 |
buf.setLineInBandFloat(gdalBuf.buffFloat, rasterBufLine, drawableBands[i]); |
| 1339 |
} |
| 1340 |
if(task.getEvent() != null) |
| 1341 |
task.manageEvent(task.getEvent()); |
| 1342 |
} |
| 1343 |
}else if(dataType[iBand] == GdalDataset.GDT_Float64){ |
| 1344 |
for (int line = y; line < yMax; line++) { |
| 1345 |
gdalBuf = gdalBands[iBand].readRaster(x, line, w, 1, w, 1, dataType[iBand]); |
| 1346 |
rasterBufLine = line - y; |
| 1347 |
for (int i = 0; i < drawableBands.length; i++) { |
| 1348 |
buf.setLineInBandDouble(gdalBuf.buffDouble, rasterBufLine, drawableBands[i]); |
| 1349 |
} |
| 1350 |
if(task.getEvent() != null) |
| 1351 |
task.manageEvent(task.getEvent()); |
| 1352 |
} |
| 1353 |
} |
| 1354 |
} |
| 1355 |
} |
| 1356 |
|
| 1357 |
/**
|
| 1358 |
* Obtiene el valor de un pixel determinado por las coordenadas x e y que se pasan
|
| 1359 |
* por par?metro
|
| 1360 |
* @param x Coordenada X del pixel
|
| 1361 |
* @param y Coordenada Y del pixel
|
| 1362 |
* @return Array de Object donde cada posici?n representa una banda y el valor ser? Integer
|
| 1363 |
* en caso de ser byte, shot o int, Float en caso de ser float y Double en caso de ser double.
|
| 1364 |
*/
|
| 1365 |
public Object[] getData(int x, int y) { |
| 1366 |
try {
|
| 1367 |
Object[] data = new Object[getRasterCount()]; |
| 1368 |
for(int i = 0; i < getRasterCount(); i++){ |
| 1369 |
GdalRasterBand rb = getRasterBand(i + 1);
|
| 1370 |
GdalBuffer r = rb.readRaster(x, y, 1, 1, 1, 1, dataType[i]); |
| 1371 |
switch(dataType[i]){
|
| 1372 |
case 0: break; //Sin tipo |
| 1373 |
case 1: data[i] = new Integer(r.buffByte[0]); //Buffer byte (8) |
| 1374 |
break;
|
| 1375 |
case 2: //Buffer short (16) |
| 1376 |
case 3: data[i] = new Integer(r.buffShort[0]); //Buffer short (16) |
| 1377 |
break;
|
| 1378 |
case 4: //Buffer int (32) |
| 1379 |
case 5: data[i] = new Integer(r.buffInt[0]); //Buffer int (32) |
| 1380 |
break;
|
| 1381 |
case 6: data[i] = new Float(r.buffFloat[0]); //Buffer float (32) |
| 1382 |
break;
|
| 1383 |
case 7: data[i] = new Double(r.buffDouble[0]); //Buffer double (64) |
| 1384 |
break;
|
| 1385 |
} |
| 1386 |
} |
| 1387 |
return data;
|
| 1388 |
} catch (GdalException e) {
|
| 1389 |
return null; |
| 1390 |
} |
| 1391 |
} |
| 1392 |
|
| 1393 |
public int getBlockSize(){ |
| 1394 |
return this.getBlockSize(); |
| 1395 |
} |
| 1396 |
|
| 1397 |
/**
|
| 1398 |
* Devuelve la transformaci?n del fichero de georreferenciaci?n
|
| 1399 |
* @return AffineTransform
|
| 1400 |
*/
|
| 1401 |
public AffineTransform getOwnTransformation() { |
| 1402 |
return ownTransformation;
|
| 1403 |
} |
| 1404 |
|
| 1405 |
/**
|
| 1406 |
* Calcula el extent en coordenadas del mundo real sin rotaci?n. Solo coordenadas y tama?o de pixel
|
| 1407 |
* @return Extent
|
| 1408 |
*/
|
| 1409 |
public Extent getExtentWithoutRot() {
|
| 1410 |
AffineTransform at = new AffineTransform( externalTransformation.getScaleX(), 0, |
| 1411 |
0, externalTransformation.getScaleY(),
|
| 1412 |
externalTransformation.getTranslateX(), externalTransformation.getTranslateY()); |
| 1413 |
Point2D p1 = new Point2D.Double(0, 0); |
| 1414 |
Point2D p2 = new Point2D.Double(width, height); |
| 1415 |
at.transform(p1, p1); |
| 1416 |
at.transform(p2, p2); |
| 1417 |
return new ExtentImpl(p1, p2); |
| 1418 |
} |
| 1419 |
|
| 1420 |
/**
|
| 1421 |
* Asigna una transformaci?n que es aplicada sobre la que ya tiene el propio fichero
|
| 1422 |
* @param t
|
| 1423 |
*/
|
| 1424 |
public void setExternalTransform(AffineTransform t){ |
| 1425 |
externalTransformation = t; |
| 1426 |
} |
| 1427 |
|
| 1428 |
/**
|
| 1429 |
* Obtiene el nombre del driver de Gdal
|
| 1430 |
* @return Cadena que representa el nombre del driver de gdal
|
| 1431 |
*/
|
| 1432 |
public String getGdalShortName() { |
| 1433 |
return shortName;
|
| 1434 |
} |
| 1435 |
|
| 1436 |
public void dispose() { |
| 1437 |
open = false;
|
| 1438 |
try {
|
| 1439 |
super.close();
|
| 1440 |
} catch (GdalException e1) {
|
| 1441 |
} |
| 1442 |
try {
|
| 1443 |
finalize(); |
| 1444 |
} catch (Throwable e) { |
| 1445 |
} |
| 1446 |
} |
| 1447 |
|
| 1448 |
protected void finalize() { |
| 1449 |
fileTransparency = null;
|
| 1450 |
palette = null;
|
| 1451 |
colorInterpr = null;
|
| 1452 |
ownTransformation = null;
|
| 1453 |
externalTransformation = null;
|
| 1454 |
stepArrayX = null;
|
| 1455 |
stepArrayY = null;
|
| 1456 |
fileName = null;
|
| 1457 |
shortName = null;
|
| 1458 |
trans = null;
|
| 1459 |
version = null;
|
| 1460 |
dataType = null;
|
| 1461 |
metadata = null;
|
| 1462 |
|
| 1463 |
if(gdalBands != null) { |
| 1464 |
for (int i = 0; i < gdalBands.length; i++) { |
| 1465 |
gdalBands[i] = null;
|
| 1466 |
} |
| 1467 |
gdalBands = null;
|
| 1468 |
} |
| 1469 |
this.finalize();
|
| 1470 |
} |
| 1471 |
|
| 1472 |
} |
| 1473 |
|
| 1474 |
|
| 1475 |
|
| 1476 |
|