root / trunk / libraries / libRaster / src / org / gvsig / raster / dataset / io / GdalNative.java @ 11207
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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.Point2D; |
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import java.io.IOException; |
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import java.util.Vector; |
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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.dataset.properties.DatasetPalette; |
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import org.gvsig.raster.dataset.properties.DatasetTransparency; |
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import org.gvsig.raster.shared.Extent; |
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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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* @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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/**
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* Contorno en coordenadas geogr?ficas. (y Extent del raster).
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*/
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public Contour bBoxRot = new Contour(); |
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/**
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* Contorno en coordenadas geogr?ficas sin rotaci?n aplicada. Esto es util para poder
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* calcular los pixeles necesarios que se van a leer del raster. Cuando el raster no tiene
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* rotaci?n coincide con esq.
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*/
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public Contour bBoxWithoutRot = new Contour(); |
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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 = GDT_Byte; |
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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 currentViewY = 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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private boolean[] orientation; |
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/**
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* Estado de transparencia del raster.
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*/
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protected DatasetTransparency fileTransparency = null; |
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protected DatasetPalette palette = null; |
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protected DatasetColorInterpretation colorInterpr = null; |
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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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// Polilinea con extent
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public class Contour extends Vector { |
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final private static long serialVersionUID = -3370601314380922368L; |
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public double minX = Double.MAX_VALUE, minY = Double.MAX_VALUE; |
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public double maxX = -Double.MAX_VALUE, maxY = -Double.MAX_VALUE; |
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public Contour() {
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super();
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} |
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public void add(Point2D pt) { |
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super.add(pt);
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if (pt.getX() > maxX) maxX = pt.getX();
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if (pt.getX() < minX) minX = pt.getX();
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if (pt.getY() > maxY) maxY = pt.getY();
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if (pt.getY() < minY) minY = pt.getY();
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} |
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} |
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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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/**
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* <P>
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* Calcula la bounding box en la que est? metido el raster teniendo en cuenta
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* el tama?o de pixel y la rotaci?n. Esto lo hace con los valores de transformaci?n
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* leidos por gdal en el vector de 6 elementos adfGeoTransform donde cada elemento
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* del vector represnta los siguientes valores
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* </P>
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* <UL>
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* <LI>0-origen X</LI>
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* <LI>1-tama?o de pixel X</LI>
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* <LI>2-shear en X</LI>
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* <LI>3-origen Y</LI>
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* <LI>4-shear en Y</LI>
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* <LI>5-Tama?o de pixel Y</LI>
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* </UL>
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* <P>
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* Para el calculo de una esquina aplicamos la formula siguiente:<BR>
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* PtoX = originX + pixelSizeX * x + shearX * y;<BR>
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* PtoY = originY + shearY * x + pixelSizeY * y;<BR>
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* Aplicandolo a las cuatro esquinas sustituimos en cada una de ellas por.
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* </P>
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* <UL>
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* <LI>Esquina superior izquierda: x = 0; y = 0;</LI>
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* <LI>Esquina superior derecha: x = MaxX; y = 0;</LI>
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* <LI>Esquina inferior izquierda: x = 0; y = MaxY;</LI>
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* <LI>Esquina inferior derecha: x = MaxX; y = MaxY;</LI>
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* </UL>
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* <P>
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* quedandonos en los cuatro casos:
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* </P>
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* <UL>
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* <LI>Esquina superior izquierda: originX; originY;</LI>
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* <LI>Esquina superior derecha: PtoX = originX + pixelSizeX * x; PtoY = originY + shearY * x;</LI>
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* <LI>Esquina inferior izquierda: PtoX = originX + shearX * y; PtoY = originY + pixelSizeY * y;</LI>
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* <LI>Esquina inferior derecha: PtoX = originX + pixelSizeX * x + shearX * y; PtoY = originY + shearY * x + pixelSizeY * y;</LI>
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* </UL>
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*
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*/
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private void boundingBoxFromGeoTransform(){ |
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double geoX = 0D, geoY = 0D; |
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//Upper left corner
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bBoxRot.add(new Point2D.Double(trans.adfgeotransform[0], trans.adfgeotransform[3])); |
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//Lower left corner
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geoX = trans.adfgeotransform[0] + trans.adfgeotransform[2] * height; |
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geoY = trans.adfgeotransform[3] + trans.adfgeotransform[5] * height; |
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bBoxRot.add(new Point2D.Double(geoX, geoY)); |
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//Upper right corner
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geoX = trans.adfgeotransform[0] + trans.adfgeotransform[1] * width; |
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geoY = trans.adfgeotransform[3] + trans.adfgeotransform[4] * width; |
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bBoxRot.add(new Point2D.Double(geoX, geoY)); |
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//Lower right corner
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geoX = trans.adfgeotransform[0] + trans.adfgeotransform[1] * width + trans.adfgeotransform[2] * height; |
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geoY = trans.adfgeotransform[3] + trans.adfgeotransform[4] * width + trans.adfgeotransform[5] * height; |
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bBoxRot.add(new Point2D.Double(geoX, geoY)); |
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//TODO: ?OJO! con coordenadas geogr?ficas
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} |
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/**
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* Calcula la bounding box en la que est? metido el raster teniendo en cuenta
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* el tama?o de pixel y la rotaci?n.
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*/
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private void boundingBoxWithoutRotation(){ |
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double ox = trans.adfgeotransform[0]; |
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double oy = trans.adfgeotransform[3]; |
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double resx = trans.adfgeotransform[1]; |
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double resy = trans.adfgeotransform[5]; |
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bBoxWithoutRot.add(new Point2D.Double(ox, oy)); |
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bBoxWithoutRot.add(new Point2D.Double(ox + resx * width, oy)); |
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bBoxWithoutRot.add(new Point2D.Double(ox, oy + resy * height)); |
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bBoxWithoutRot.add(new Point2D.Double(ox + resx * width, oy + resy * height)); |
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//TODO: ?OJO! con coordenadas geogr?ficas
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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 = fName.toLowerCase().substring(fName.lastIndexOf('.')+1); |
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if (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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setDataType(this.getRasterBand(1).getRasterDataType()); |
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shortName = getDriverShortName(); |
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fileTransparency = new DatasetTransparency();
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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 nos sirve
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//para saber que banda de la imagen va asignada a cada banda de 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 DatasetPalette();
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palette.createPaletteFromGdalColorTable(rb.getRasterColorTable()); |
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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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boundingBoxWithoutRotation(); |
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boundingBoxFromGeoTransform(); |
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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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bBoxRot.add(new Point2D.Double(0, 0)); |
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bBoxRot.add(new Point2D.Double(width, 0)); |
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bBoxRot.add(new Point2D.Double(0, height)); |
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bBoxRot.add(new Point2D.Double(width, height)); |
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bBoxWithoutRot = bBoxRot; |
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this.georeferenced = false; |
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} |
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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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// Supone rasters no girados
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public Point2D worldToRaster(Point2D pt) { |
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double x = ((pt.getX() - bBoxWithoutRot.minX) * ((double) currentFullWidth)) / (double)(bBoxWithoutRot.maxX - bBoxWithoutRot.minX); |
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double y = ((bBoxWithoutRot.maxY - pt.getY()) * ((double) currentFullHeight)) / (double)(bBoxWithoutRot.maxY - bBoxWithoutRot.minY); |
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Point2D ptRes = new Point2D.Double(x, y); |
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return ptRes;
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} |
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public Point2D rasterToWorld(Point2D pt) { |
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double x = bBoxWithoutRot.minX + ((pt.getX() * (bBoxWithoutRot.maxX - bBoxWithoutRot.minX)) / width);
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double y = bBoxWithoutRot.maxY - ((pt.getY() * (bBoxWithoutRot.maxY - bBoxWithoutRot.minY)) / height);
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Point2D ptRes = new Point2D.Double(x, y); |
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return ptRes;
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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, boolean[] orientation) 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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if(!orientation[0])//Invierte la orientaci?n en X |
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currentViewX = (width - tl.getX()) - (br.getX()-tl.getX()); |
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else
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currentViewX = tl.getX(); |
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if(orientation[1])//Invierte la orientaci?n en Y |
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lastReadLine = (height - tl.getY()) - (br.getY()-tl.getY()); |
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else
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lastReadLine = tl.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, boolean[] orientation) { |
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this.orientation = orientation;
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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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if(!orientation[0]) //Invierte la orientaci?n en X |
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currentViewX = (width - tl.getX()) - (br.getX()-tl.getX()); |
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else
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currentViewX = tl.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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if(orientation[1])//Invierte la orientaci?n en Y |
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lastReadLine = (height - tl.getY()) - (br.getY()-tl.getY()); |
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else
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lastReadLine = tl.getY(); |
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//Para lectura del renderizado (ARGB). readWindow selecciona las bandas que necesita.
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try {
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// calcula el overview a usar
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gdalBands = new GdalRasterBand[4]; |
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calcOverview(tl, br, orientation); |
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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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setDataType(gdalBands[0].getRasterDataType());
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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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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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} catch (GdalException e) {
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e.printStackTrace(); |
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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.
|
| 407 |
* @param nbands N?mero de bandas solicitado.
|
| 408 |
* @throws GdalException
|
| 409 |
*/
|
| 410 |
public void selectGdalBands(int nbands)throws GdalException{ |
| 411 |
gdalBands = new GdalRasterBand[nbands];
|
| 412 |
//Selecciona las bandas y los overviews necesarios
|
| 413 |
gdalBands[0] = getRasterBand(1); |
| 414 |
for(int i = 0; i < nbands; i++) |
| 415 |
gdalBands[i] = gdalBands[0];
|
| 416 |
|
| 417 |
setDataType(gdalBands[0].getRasterDataType());
|
| 418 |
|
| 419 |
for(int i = 2; i <= nbands; i++){ |
| 420 |
if(getRasterCount() >= i){
|
| 421 |
gdalBands[i - 1] = getRasterBand(i);
|
| 422 |
for(int j = i; j < nbands; j++) |
| 423 |
gdalBands[j] = gdalBands[i - 1];
|
| 424 |
} |
| 425 |
} |
| 426 |
|
| 427 |
if (currentOverview > 0) { |
| 428 |
gdalBands[0] = gdalBands[0].getOverview(currentOverview); |
| 429 |
for(int i = 2; i <= nbands; i++){ |
| 430 |
if(getRasterCount() >= i)
|
| 431 |
gdalBands[i - 1] = gdalBands[i - 1].getOverview(currentOverview); |
| 432 |
} |
| 433 |
} |
| 434 |
} |
| 435 |
|
| 436 |
int lastY = -1; |
| 437 |
|
| 438 |
/**
|
| 439 |
* Lee una l?nea de bytes
|
| 440 |
* @param line Buffer donde se cargan los datos
|
| 441 |
* @param initOffset Desplazamiento inicial desde el margen inzquierdo. Esto es necesario para cuando
|
| 442 |
* se supersamplea ya que cada pixel de imagen ocupa muchos pixeles de pantalla y puede empezar a dibujarse
|
| 443 |
* por la izquierda a mitad de pixel
|
| 444 |
* @param gdalBuffer Buffer con la l?nea de datos original
|
| 445 |
*/
|
| 446 |
private void readLine(byte[][] line, double initOffset, GdalBuffer[] gdalBuffer){ |
| 447 |
double j = 0D; |
| 448 |
int i = 0; |
| 449 |
for (int iBand = 0; iBand < gdalBuffer.length; iBand++){ |
| 450 |
for (i = 0, j = initOffset; i < currentViewWidth && j < gdalBuffer[0].getSize(); i++, j+=stepX) { |
| 451 |
line[iBand][i] = gdalBuffer[iBand].buffByte[(int) j];
|
| 452 |
} |
| 453 |
} |
| 454 |
} |
| 455 |
|
| 456 |
/**
|
| 457 |
* Lee una l?nea de shorts
|
| 458 |
* @param line Buffer donde se cargan los datos
|
| 459 |
* @param initOffset Desplazamiento inicial desde el margen inzquierdo. Esto es necesario para cuando
|
| 460 |
* se supersamplea ya que cada pixel de imagen ocupa muchos pixeles de pantalla y puede empezar a dibujarse
|
| 461 |
* por la izquierda a mitad de pixel
|
| 462 |
* @param gdalBuffer Buffer con la l?nea de datos original
|
| 463 |
*/
|
| 464 |
private void readLine(short[][] line, double initOffset, GdalBuffer[] gdalBuffer){ |
| 465 |
double j = 0D; |
| 466 |
int i = 0; |
| 467 |
for (int iBand = 0; iBand < gdalBuffer.length; iBand++){ |
| 468 |
for (i = 0, j = initOffset; i < currentViewWidth && j < gdalBuffer[0].getSize(); i++, j+=stepX) { |
| 469 |
line[iBand][i] = (short)(gdalBuffer[iBand].buffShort[(int) j] & 0xffff); |
| 470 |
} |
| 471 |
} |
| 472 |
} |
| 473 |
|
| 474 |
/**
|
| 475 |
* Lee una l?nea de ints
|
| 476 |
* @param line Buffer donde se cargan los datos
|
| 477 |
* @param initOffset Desplazamiento inicial desde el margen inzquierdo. Esto es necesario para cuando
|
| 478 |
* se supersamplea ya que cada pixel de imagen ocupa muchos pixeles de pantalla y puede empezar a dibujarse
|
| 479 |
* por la izquierda a mitad de pixel
|
| 480 |
* @param gdalBuffer Buffer con la l?nea de datos original
|
| 481 |
*/
|
| 482 |
private void readLine(int[][] line, double initOffset, GdalBuffer[] gdalBuffer){ |
| 483 |
double j = 0D; |
| 484 |
int i = 0; |
| 485 |
for (int iBand = 0; iBand < gdalBuffer.length; iBand++){ |
| 486 |
for (i = 0, j = initOffset; i < currentViewWidth && j < gdalBuffer[0].getSize(); i++, j+=stepX) { |
| 487 |
line[iBand][i] = (gdalBuffer[iBand].buffInt[(int) j] & 0xffffffff); |
| 488 |
} |
| 489 |
} |
| 490 |
} |
| 491 |
|
| 492 |
/**
|
| 493 |
* Lee una l?nea de float
|
| 494 |
* @param line Buffer donde se cargan los datos
|
| 495 |
* @param initOffset Desplazamiento inicial desde el margen izquierdo. Esto es necesario para cuando
|
| 496 |
* se supersamplea ya que cada pixel de imagen ocupa muchos pixeles de pantalla y puede empezar a dibujarse
|
| 497 |
* por la izquierda a mitad de pixel
|
| 498 |
* @param gdalBuffer Buffer con la l?nea de datos original
|
| 499 |
*/
|
| 500 |
private void readLine(float[][] line, double initOffset, GdalBuffer[] gdalBuffer){ |
| 501 |
double j = 0D; |
| 502 |
int i = 0; |
| 503 |
for (int iBand = 0; iBand < gdalBuffer.length; iBand++){ |
| 504 |
for (i = 0, j = initOffset; i < currentViewWidth && j < gdalBuffer[0].getSize(); i++, j+=stepX) { |
| 505 |
line[iBand][i] = gdalBuffer[iBand].buffFloat[(int) j];
|
| 506 |
} |
| 507 |
} |
| 508 |
} |
| 509 |
|
| 510 |
/**
|
| 511 |
* Lee una l?nea de doubles
|
| 512 |
* @param line Buffer donde se cargan los datos
|
| 513 |
* @param initOffset Desplazamiento inicial desde el margen inzquierdo. Esto es necesario para cuando
|
| 514 |
* se supersamplea ya que cada pixel de imagen ocupa muchos pixeles de pantalla y puede empezar a dibujarse
|
| 515 |
* por la izquierda a mitad de pixel
|
| 516 |
* @param gdalBuffer Buffer con la l?nea de datos original
|
| 517 |
*/
|
| 518 |
private void readLine(double[][] line, double initOffset, GdalBuffer[] gdalBuffer){ |
| 519 |
double j = 0D; |
| 520 |
int i = 0; |
| 521 |
for (int iBand = 0; iBand < gdalBuffer.length; iBand++){ |
| 522 |
for (i = 0, j = initOffset; i < currentViewWidth && j < gdalBuffer[0].getSize(); i++, j+=stepX) { |
| 523 |
line[iBand][i] = gdalBuffer[iBand].buffDouble[(int) j];
|
| 524 |
} |
| 525 |
} |
| 526 |
} |
| 527 |
|
| 528 |
/**
|
| 529 |
* Lee una l?nea completa del raster y devuelve un array del tipo correcto. Esta funci?n es util
|
| 530 |
* para una lectura rapida de todo el fichero sin necesidad de asignar vista.
|
| 531 |
* @param nLine N?mero de l?nea a leer
|
| 532 |
* @param band Banda requerida
|
| 533 |
* @return Object que es un array unidimendional del tipo de datos del raster
|
| 534 |
* @throws GdalException
|
| 535 |
*/
|
| 536 |
public Object readCompleteLine(int nLine, int band) throws GdalException { |
| 537 |
GdalRasterBand gdalBand = super.getRasterBand(band + 1); |
| 538 |
GdalBuffer gdalBuf = null;
|
| 539 |
|
| 540 |
gdalBuf = gdalBand.readRaster(0, nLine, getRasterXSize(), 1, getRasterXSize(), 1, dataType); |
| 541 |
|
| 542 |
if (dataType == GDT_Byte)
|
| 543 |
return gdalBuf.buffByte;
|
| 544 |
else if (dataType == GDT_CInt16 || dataType == GDT_Int16 || dataType == GDT_UInt16) |
| 545 |
return gdalBuf.buffShort;
|
| 546 |
else if (dataType == GDT_CInt32 || dataType == GDT_Int32 || dataType == GDT_UInt32) |
| 547 |
return gdalBuf.buffInt;
|
| 548 |
else if(dataType == GDT_Float32 || dataType == GDT_CFloat32) |
| 549 |
return gdalBuf.buffFloat;
|
| 550 |
else if(dataType == GDT_Float64 || dataType == GDT_CFloat64) |
| 551 |
return gdalBuf.buffDouble;
|
| 552 |
return null; |
| 553 |
} |
| 554 |
|
| 555 |
/**
|
| 556 |
* Lee una bloque completo del raster y devuelve un array tridimensional del tipo correcto. Esta funci?n es util
|
| 557 |
* para una lectura rapida de todo el fichero sin necesidad de asignar vista.
|
| 558 |
* @param nLine N?mero de l?nea a leer
|
| 559 |
* @param band Banda requerida
|
| 560 |
* @return Object que es un array unidimendional del tipo de datos del raster
|
| 561 |
* @throws GdalException
|
| 562 |
*/
|
| 563 |
public Object readBlock(int pos, int blockHeight) throws GdalException { |
| 564 |
bBandNr = super.getRasterCount();
|
| 565 |
int nX = getRasterXSize();
|
| 566 |
|
| 567 |
GdalRasterBand[] gdalBand = new GdalRasterBand[bBandNr]; |
| 568 |
for (int iBand = 0; iBand < gdalBand.length; iBand++) { |
| 569 |
gdalBand[iBand] = super.getRasterBand(iBand + 1); |
| 570 |
} |
| 571 |
|
| 572 |
GdalBuffer[] gdalBuf = new GdalBuffer[bBandNr]; |
| 573 |
|
| 574 |
if (dataType == GDT_Byte) {
|
| 575 |
byte[][][] buf = new byte[bBandNr][blockHeight][getRasterXSize()]; |
| 576 |
for (int iBand = 0; iBand < gdalBuf.length; iBand++) { |
| 577 |
gdalBuf[iBand] = gdalBand[iBand].readRaster(0, pos, nX, blockHeight, nX, blockHeight, dataType);
|
| 578 |
for (int iRow = 0; iRow < blockHeight; iRow++) |
| 579 |
for (int iCol = 0; iCol < nX; iCol++) |
| 580 |
buf[iBand][iRow][iCol] = gdalBuf[iBand].buffByte[iRow * nX + iCol]; |
| 581 |
} |
| 582 |
return buf;
|
| 583 |
} else if (dataType == GDT_CInt16 || dataType == GDT_Int16 || dataType == GDT_UInt16) { |
| 584 |
short[][][] buf = new short[bBandNr][blockHeight][getRasterXSize()]; |
| 585 |
for (int iBand = 0; iBand < gdalBuf.length; iBand++) { |
| 586 |
gdalBuf[iBand] = gdalBand[iBand].readRaster(0, pos, nX, blockHeight, nX, blockHeight, dataType);
|
| 587 |
for (int iRow = 0; iRow < blockHeight; iRow++) |
| 588 |
for (int iCol = 0; iCol < nX; iCol++) |
| 589 |
buf[iBand][iRow][iCol] = gdalBuf[iBand].buffShort[iRow * nX + iCol]; |
| 590 |
} |
| 591 |
return buf;
|
| 592 |
} else if (dataType == GDT_CInt32 || dataType == GDT_Int32 || dataType == GDT_UInt32) { |
| 593 |
int[][][] buf = new int[bBandNr][blockHeight][getRasterXSize()]; |
| 594 |
for (int iBand = 0; iBand < gdalBuf.length; iBand++) { |
| 595 |
gdalBuf[iBand] = gdalBand[iBand].readRaster(0, pos, nX, blockHeight, nX, blockHeight, dataType);
|
| 596 |
for (int iRow = 0; iRow < blockHeight; iRow++) |
| 597 |
for (int iCol = 0; iCol < nX; iCol++) |
| 598 |
buf[iBand][iRow][iCol] = gdalBuf[iBand].buffInt[iRow * nX + iCol];; |
| 599 |
} |
| 600 |
return buf;
|
| 601 |
} else if(dataType == GDT_Float32 || dataType == GDT_CFloat32) { |
| 602 |
float[][][] buf = new float[bBandNr][blockHeight][getRasterXSize()]; |
| 603 |
for (int iBand = 0; iBand < gdalBuf.length; iBand++) { |
| 604 |
gdalBuf[iBand] = gdalBand[iBand].readRaster(0, pos, nX, blockHeight, nX, blockHeight, dataType);
|
| 605 |
for (int iRow = 0; iRow < blockHeight; iRow++) |
| 606 |
for (int iCol = 0; iCol < nX; iCol++) |
| 607 |
buf[iBand][iRow][iCol] = gdalBuf[iBand].buffFloat[iRow * nX + iCol];; |
| 608 |
} |
| 609 |
return buf;
|
| 610 |
} else if(dataType == GDT_Float64 || dataType == GDT_CFloat64) { |
| 611 |
double[][][] buf = new double[bBandNr][blockHeight][getRasterXSize()]; |
| 612 |
for (int iBand = 0; iBand < gdalBuf.length; iBand++) { |
| 613 |
gdalBuf[iBand] = gdalBand[iBand].readRaster(0, pos, nX, blockHeight, nX, blockHeight, dataType);
|
| 614 |
for (int iRow = 0; iRow < blockHeight; iRow++) |
| 615 |
for (int iCol = 0; iCol < nX; iCol++) |
| 616 |
buf[iBand][iRow][iCol] = gdalBuf[iBand].buffDouble[iRow * nX + iCol];; |
| 617 |
} |
| 618 |
return buf;
|
| 619 |
} |
| 620 |
|
| 621 |
return null; |
| 622 |
} |
| 623 |
|
| 624 |
public void readLine(Object line) throws GdalException { |
| 625 |
int w = (int) (Math.ceil(((double)currentViewWidth)*stepX) + 1); |
| 626 |
int x = (int) (currentViewX); |
| 627 |
int y = (int) (lastReadLine); |
| 628 |
GdalBuffer r = null, g = null, b = null; |
| 629 |
GdalBuffer a = new GdalBuffer();
|
| 630 |
|
| 631 |
while(y >= gdalBands[0].getRasterBandYSize()) |
| 632 |
y--; |
| 633 |
|
| 634 |
if (x+w > gdalBands[0].getRasterBandXSize()) |
| 635 |
w = gdalBands[0].getRasterBandXSize()-x;
|
| 636 |
|
| 637 |
if(gdalBands[0].getRasterColorTable() != null){ |
| 638 |
palette = new DatasetPalette();
|
| 639 |
palette.createPaletteFromGdalColorTable(gdalBands[0].getRasterColorTable());
|
| 640 |
r = gdalBands[0].readRaster(x, y, w, 1, w, 1, dataType); |
| 641 |
}else{
|
| 642 |
a.buffByte = new byte[w]; |
| 643 |
r = gdalBands[0].readRaster(x, y, w, 1, w, 1, dataType); |
| 644 |
g = b = r; |
| 645 |
if (getRasterCount() > 1 && gdalBands[1] != null) |
| 646 |
g = gdalBands[1].readRaster(x, y, w, 1, w, 1, dataType); |
| 647 |
if (getRasterCount() > 2 && gdalBands[2] != null) |
| 648 |
b = gdalBands[2].readRaster(x, y, w, 1, w, 1, dataType); |
| 649 |
} |
| 650 |
|
| 651 |
lastReadLine += stepY; |
| 652 |
|
| 653 |
double initOffset = Math.abs(currentViewX - ((int)currentViewX)); |
| 654 |
GdalBuffer[] bands = {r, g, b};
|
| 655 |
|
| 656 |
if (dataType == GDT_Byte)
|
| 657 |
readLine((byte[][])line, initOffset, bands); |
| 658 |
else if (dataType == GDT_CInt16 || dataType == GDT_Int16 || dataType == GDT_UInt16) |
| 659 |
readLine((short[][])line, initOffset, bands); |
| 660 |
else if (dataType == GDT_CInt32 || dataType == GDT_Int32 || dataType == GDT_UInt32) |
| 661 |
readLine((int[][])line, initOffset, bands); |
| 662 |
else if(dataType == GDT_Float32 || dataType == GDT_CFloat32) |
| 663 |
readLine((float[][])line, initOffset, bands); |
| 664 |
else if(dataType == GDT_Float64 || dataType == GDT_CFloat64) |
| 665 |
readLine((double[][])line, initOffset, bands); |
| 666 |
|
| 667 |
return;
|
| 668 |
} |
| 669 |
|
| 670 |
/**
|
| 671 |
* Cuando se hace una petici?n de carga de buffer la extensi?n pedida puede estar ajustada a la extensi?n del raster
|
| 672 |
* o no estarlo. En caso de no estarlo los pixeles del buffer que caen fuera de la extensi?n del raster tendr?n valor
|
| 673 |
* de NoData. Esta funci?n calcula en que pixel del buffer hay que empezar a escribir en caso de que este sea mayor
|
| 674 |
* que los datos a leer.
|
| 675 |
* @param dWorldTLX Posici?n X superior izquierda en coord reales
|
| 676 |
* @param dWorldTLY Posici?n Y superior izquierda en coord reales
|
| 677 |
* @param dWorldBRX Posici?n X inferior derecha en coord reales
|
| 678 |
* @param dWorldBRY Posici?n Y inferior derecha en coord reales
|
| 679 |
* @param nWidth Ancho en pixeles del buffer
|
| 680 |
* @param nHeight Alto en pixeles del buffer
|
| 681 |
* @return desplazamiento dentro del buffer en X e Y
|
| 682 |
*/
|
| 683 |
private int[] calcStepBuffer(Extent dataExtent, int nWidth, int nHeight, int[] stpBuffer){ |
| 684 |
Extent imageExtent = new Extent(bBoxWithoutRot.minX, bBoxWithoutRot.minY, bBoxWithoutRot.maxX, bBoxWithoutRot.maxY);
|
| 685 |
Extent ajustDataExtent = RasterUtilities.calculateAdjustedView(dataExtent, imageExtent); |
| 686 |
if(!RasterUtilities.compareExtents(dataExtent, ajustDataExtent)){
|
| 687 |
Point2D p1 = worldToRaster(new Point2D.Double(ajustDataExtent.minX(), ajustDataExtent.maxY())); |
| 688 |
Point2D p2 = worldToRaster(new Point2D.Double(ajustDataExtent.maxX(), ajustDataExtent.minY())); |
| 689 |
Point2D p3 = worldToRaster(new Point2D.Double(dataExtent.minX(), dataExtent.maxY())); |
| 690 |
Point2D p4 = worldToRaster(new Point2D.Double(dataExtent.maxX(), dataExtent.minY())); |
| 691 |
//Ese es el ancho y alto q tendr?a el buffer en caso de haberse ajustado
|
| 692 |
int w = (int)Math.abs(Math.ceil(p2.getX()) - Math.floor(p1.getX())); |
| 693 |
int h = (int)Math.abs(Math.floor(p1.getY()) - Math.ceil(p2.getY())); |
| 694 |
|
| 695 |
stpBuffer[0] = (int)(p1.getX() + (-p3.getX())); |
| 696 |
stpBuffer[1] = (int)(p1.getY() + (-p3.getY())); |
| 697 |
stpBuffer[2] = stpBuffer[0] + w; |
| 698 |
stpBuffer[3] = stpBuffer[1] + h; |
| 699 |
return new int[]{w, h}; |
| 700 |
} |
| 701 |
return new int[]{nWidth, nHeight}; |
| 702 |
} |
| 703 |
|
| 704 |
/**
|
| 705 |
* Lee una ventana de datos sin resampleo a partir de coordenadas reales.
|
| 706 |
* @param buf Buffer donde se almacenan los datos
|
| 707 |
* @param bandList Lista de bandas que queremos leer y sobre que bandas del buffer de destino queremos escribirlas
|
| 708 |
* @param dWorldTLX Posici?n X superior izquierda en coord reales
|
| 709 |
* @param dWorldTLY Posici?n Y superior izquierda en coord reales
|
| 710 |
* @param dWorldBRX Posici?n X inferior derecha en coord reales
|
| 711 |
* @param dWorldBRY Posici?n Y inferior derecha en coord reales
|
| 712 |
* @param nWidth Ancho en pixeles del buffer
|
| 713 |
* @param nHeight Alto en pixeles del buffer
|
| 714 |
* @throws GdalException
|
| 715 |
*/
|
| 716 |
public void readWindow(IBuffer buf, BandList bandList, double dWorldTLX, double dWorldTLY,double dWorldBRX, double dWorldBRY, |
| 717 |
int nWidth, int nHeight, boolean adjustToExtent) throws GdalException { |
| 718 |
Extent petExtent = new Extent(dWorldTLX, dWorldTLY, dWorldBRX, dWorldBRY);
|
| 719 |
if(dWorldTLX < bBoxWithoutRot.minX)
|
| 720 |
dWorldTLX = bBoxWithoutRot.minX; |
| 721 |
if(dWorldTLY > bBoxWithoutRot.maxY)
|
| 722 |
dWorldTLY = bBoxWithoutRot.maxY; |
| 723 |
if(dWorldBRX > bBoxWithoutRot.maxX)
|
| 724 |
dWorldBRX = bBoxWithoutRot.maxX; |
| 725 |
if(dWorldBRY < bBoxWithoutRot.minY)
|
| 726 |
dWorldBRY = bBoxWithoutRot.minY; |
| 727 |
setView(dWorldTLX, dWorldTLY, dWorldBRX, dWorldBRY, nWidth, nHeight, new boolean[]{true, false}); |
| 728 |
Point2D tl = worldToRaster(new Point2D.Double(dWorldTLX, dWorldTLY)); |
| 729 |
|
| 730 |
if(gdalBands.length == 0) |
| 731 |
return;
|
| 732 |
|
| 733 |
selectGdalBands(buf.getBandCount()); |
| 734 |
|
| 735 |
int x = (int) tl.getX(); |
| 736 |
int y = (int) tl.getY(); |
| 737 |
|
| 738 |
int[] stpBuffer = new int[]{0, 0 , buf.getWidth(), buf.getHeight()}; |
| 739 |
//Si el buffer no se ajusta al extent entonces calculamos en que posici?n comienza a escribirse dentro del buffer
|
| 740 |
//ya que lo que cae fuera ser?n valores NoData
|
| 741 |
if(!adjustToExtent){
|
| 742 |
int[] wh = calcStepBuffer(petExtent, nWidth, nHeight, stpBuffer); |
| 743 |
if(x < 0) |
| 744 |
x = 0;
|
| 745 |
if(y < 0) |
| 746 |
y = 0;
|
| 747 |
readData(buf, bandList, x, y, wh[0], wh[1], wh[0], wh[1], 0, 0, stpBuffer); |
| 748 |
return;
|
| 749 |
} |
| 750 |
|
| 751 |
readData(buf, bandList, x, y, nWidth, nHeight, nWidth, nHeight, 0, 0, stpBuffer); |
| 752 |
} |
| 753 |
|
| 754 |
/**
|
| 755 |
* Lee una ventana de datos con resampleo a partir de coordenadas reales. Este m?todo lee la
|
| 756 |
* ventana de una vez cargando los datos de un golpe en el buffer. Las coordenadas se solicitan
|
| 757 |
* en coordenadas del mundo real por lo que estas pueden caer en cualquier parte de un pixel.
|
| 758 |
* Esto se hace m?s evidente cuando supersampleamos en la petici?n, es decir el buffer de de
|
| 759 |
* mayor tama?o que el n?mero de pixels solicitado.
|
| 760 |
*
|
| 761 |
* Para resolver esto escribiremos con la funci?n readRaster los datos sobre un buffer mayor
|
| 762 |
* que el solicitado. Despu?s calcularemos el desplazamiento en pixels dentro de este buffer
|
| 763 |
* de mayor tama?o hasta llegar a la coordenada real donde comienza la petici?n real que ha
|
| 764 |
* hecho el usuario. Esto es as? porque cuando supersampleamos no queremos los pixeles del
|
| 765 |
* raster de disco completos sino que en los bordes del buffer quedan cortados.
|
| 766 |
*
|
| 767 |
* @param buf Buffer donde se almacenan los datos
|
| 768 |
* @param bandList Lista de bandas que queremos leer y sobre que bandas del buffer de destino queremos escribirlas
|
| 769 |
* @param dWorldTLX Posici?n X superior izquierda en coord reales
|
| 770 |
* @param dWorldTLY Posici?n Y superior izquierda en coord reales
|
| 771 |
* @param dWorldBRX Posici?n X inferior derecha en coord reales
|
| 772 |
* @param dWorldBRY Posici?n Y inferior derecha en coord reales
|
| 773 |
* @param nWidth Ancho en pixeles de la petici?n
|
| 774 |
* @param nHeight Alto en pixeles de la petici?n
|
| 775 |
* @param bufWidth Ancho del buffer
|
| 776 |
* @param bufHeight Alto del buffer
|
| 777 |
* @throws GdalException
|
| 778 |
*/
|
| 779 |
public void readWindow(IBuffer buf, BandList bandList, double dWorldTLX, double dWorldTLY, double dWorldBRX, double dWorldBRY, |
| 780 |
double nWidth, double nHeight, int bufWidth, int bufHeight, boolean adjustToExtent) throws GdalException { |
| 781 |
Extent petExtent = new Extent(dWorldTLX, dWorldTLY, dWorldBRX, dWorldBRY);
|
| 782 |
setView(dWorldTLX, dWorldTLY, dWorldBRX, dWorldBRY, bufWidth, bufHeight, new boolean[]{true, false}); |
| 783 |
Point2D tl = worldToRaster(new Point2D.Double(dWorldTLX, dWorldTLY)); |
| 784 |
Point2D br = worldToRaster(new Point2D.Double(dWorldBRX, dWorldBRY)); |
| 785 |
if(dWorldTLX < bBoxWithoutRot.minX)
|
| 786 |
dWorldTLX = bBoxWithoutRot.minX; |
| 787 |
if(dWorldTLY > bBoxWithoutRot.maxY)
|
| 788 |
dWorldTLY = bBoxWithoutRot.maxY; |
| 789 |
if(dWorldBRX > bBoxWithoutRot.maxX)
|
| 790 |
dWorldBRX = bBoxWithoutRot.maxX; |
| 791 |
if(dWorldBRY < bBoxWithoutRot.minY)
|
| 792 |
dWorldBRY = bBoxWithoutRot.minY; |
| 793 |
|
| 794 |
if(gdalBands.length == 0) |
| 795 |
return;
|
| 796 |
|
| 797 |
selectGdalBands(buf.getBandCount()); |
| 798 |
|
| 799 |
int x = (int) tl.getX(); |
| 800 |
int y = (int) tl.getY(); |
| 801 |
int endX = (int) Math.ceil(br.getX()); |
| 802 |
int endY = (int) Math.ceil(br.getY()); |
| 803 |
|
| 804 |
int stpX = 0; |
| 805 |
int stpY = 0; |
| 806 |
|
| 807 |
if(bufWidth > Math.ceil(nWidth)){ |
| 808 |
stpX = (int)(((tl.getX() - x) * bufWidth) / nWidth);
|
| 809 |
bufWidth = (int)((Math.abs(endX - x) * bufWidth) / nWidth); |
| 810 |
} |
| 811 |
if(bufHeight > Math.ceil(nHeight)){ |
| 812 |
stpY = (int)(((tl.getY() - y) * bufHeight) / nHeight);
|
| 813 |
bufHeight = (int)((Math.abs(endY - y) * bufHeight) / nHeight); |
| 814 |
} |
| 815 |
|
| 816 |
nWidth = (int)Math.abs(endX - x); |
| 817 |
nHeight = (int)Math.abs(endY - y); |
| 818 |
|
| 819 |
int[] stpBuffer = new int[]{0, 0 , buf.getWidth(), buf.getHeight()}; |
| 820 |
//Si el buffer no se ajusta al extent entonces calculamos en que posici?n comienza a escribirse dentro del buffer
|
| 821 |
//ya que lo que cae fuera ser?n valores NoData
|
| 822 |
if(!adjustToExtent){
|
| 823 |
int[] wh = calcStepBuffer(petExtent, bufWidth, bufHeight, stpBuffer); |
| 824 |
if(x < 0) |
| 825 |
x = 0;
|
| 826 |
if(y < 0) |
| 827 |
y = 0;
|
| 828 |
stpBuffer[0] = (int)((stpBuffer[0] * bufWidth) / nWidth); |
| 829 |
stpBuffer[1] = (int)((stpBuffer[1] * bufHeight) / nHeight); |
| 830 |
stpBuffer[2] = (int)((stpBuffer[2] * bufWidth) / nWidth); |
| 831 |
stpBuffer[3] = (int)((stpBuffer[3] * bufHeight) / nHeight); |
| 832 |
bufWidth = (int)Math.abs(stpBuffer[2] - stpBuffer[0]); |
| 833 |
bufHeight = (int)Math.abs(stpBuffer[3] - stpBuffer[1]); |
| 834 |
readData(buf, bandList, x, y, wh[0], wh[1], bufWidth, bufHeight, 0, 0, stpBuffer); |
| 835 |
return;
|
| 836 |
} |
| 837 |
|
| 838 |
if ((x + nWidth) > gdalBands[0].getRasterBandXSize()) |
| 839 |
nWidth = gdalBands[0].getRasterBandXSize() - x;
|
| 840 |
|
| 841 |
if ((y + nHeight) > gdalBands[0].getRasterBandYSize()) |
| 842 |
nHeight = gdalBands[0].getRasterBandYSize() - y;
|
| 843 |
|
| 844 |
readData(buf, bandList, x, y, (int)nWidth, (int)nHeight, bufWidth, bufHeight, stpX, stpY, stpBuffer); |
| 845 |
} |
| 846 |
|
| 847 |
/**
|
| 848 |
* Lee una ventana de datos sin resampleo a partir de coordenadas en pixeles.
|
| 849 |
* @param buf Buffer donde se almacenan los datos
|
| 850 |
* @param bandList Lista de bandas que queremos leer y sobre que bandas del buffer de destino queremos escribirlas
|
| 851 |
* @param x Posici?n X en pixeles
|
| 852 |
* @param y Posici?n Y en pixeles
|
| 853 |
* @param w Ancho en pixeles
|
| 854 |
* @param h Alto en pixeles
|
| 855 |
* @throws GdalException
|
| 856 |
*/
|
| 857 |
public void readWindow(IBuffer buf, BandList bandList, int x, int y, int w, int h) throws GdalException { |
| 858 |
gdalBands = new GdalRasterBand[getRasterCount()];
|
| 859 |
isSupersampling = false;
|
| 860 |
if(gdalBands.length == 0) |
| 861 |
return;
|
| 862 |
|
| 863 |
// Selecciona las bandas
|
| 864 |
gdalBands[0] = getRasterBand(1); |
| 865 |
setDataType(gdalBands[0].getRasterDataType());
|
| 866 |
for(int iBand = 1; iBand < gdalBands.length; iBand++) |
| 867 |
gdalBands[iBand] = getRasterBand(iBand + 1);
|
| 868 |
|
| 869 |
int yMax = y + h;
|
| 870 |
readDataByLine(buf, bandList, x, y, w, yMax); |
| 871 |
} |
| 872 |
|
| 873 |
/**
|
| 874 |
* Lee una ventana de datos con resampleo a partir de coordenadas en pixeles. Este m?todo lee la
|
| 875 |
* ventana de una vez cargando los datos de un golpe en el buffer.
|
| 876 |
* @param buf Buffer donde se almacenan los datos
|
| 877 |
* @param bandList Lista de bandas que queremos leer y sobre que bandas del buffer de destino queremos escribirlas
|
| 878 |
* @param x Posici?n X en pixeles
|
| 879 |
* @param y Posici?n Y en pixeles
|
| 880 |
* @param w Ancho en pixeles
|
| 881 |
* @param h Alto en pixeles
|
| 882 |
* @param bufWidth Ancho del buffer
|
| 883 |
* @param bufHeight Alto del buffer
|
| 884 |
* @throws GdalException
|
| 885 |
*/
|
| 886 |
public void readWindow(IBuffer buf, BandList bandList, int x, int y, int w, int h, int bufWidth, int bufHeight) throws GdalException { |
| 887 |
gdalBands = new GdalRasterBand[getRasterCount()];
|
| 888 |
|
| 889 |
if(gdalBands.length == 0) |
| 890 |
return;
|
| 891 |
|
| 892 |
// Selecciona las bandas
|
| 893 |
gdalBands[0] = getRasterBand(1); |
| 894 |
setDataType(gdalBands[0].getRasterDataType());
|
| 895 |
for(int iBand = 1; iBand < gdalBands.length; iBand++) |
| 896 |
gdalBands[iBand] = getRasterBand(iBand + 1);
|
| 897 |
|
| 898 |
int[] stpBuffer = new int[]{0, 0 , buf.getWidth(), buf.getHeight()}; |
| 899 |
readData(buf, bandList, x, y, w, h, bufWidth, bufHeight, 0, 0, stpBuffer); |
| 900 |
} |
| 901 |
|
| 902 |
/**
|
| 903 |
* Lee una ventana de datos sin resampleo a partir de coordenadas en pixeles. Esta funci?n es usuada por
|
| 904 |
* readWindow para coordenadas reales y readWindow en coordenadas pixel.
|
| 905 |
* @param buf Buffer donde se almacenan los datos
|
| 906 |
* @param bandList Lista de bandas que queremos leer y sobre que bandas del buffer de destino queremos escribirlas
|
| 907 |
* @param x Posici?n X en pixeles
|
| 908 |
* @param y Posici?n Y en pixeles
|
| 909 |
* @param w Ancho en pixeles
|
| 910 |
* @param h Alto en pixeles
|
| 911 |
* @param bufWidth Ancho del buffer
|
| 912 |
* @param bufHeight Alto del buffer
|
| 913 |
* @param stepX Desplazamiento en pixeles en X a partir de la posici?n x. Este desplazamiento es util cuando hay un
|
| 914 |
* supersampleo ya que puede ser que de los pixeles que est?n en el borde izquierdo de la petici?n solo queramos una
|
| 915 |
* parte de ellos.
|
| 916 |
* @param stepY Desplazamiento en pixeles en Y a partir de la posici?n y. Este desplazamiento es util cuando hay un
|
| 917 |
* supersampleo ya que puede ser que de los pixeles que est?n en el borde superior de la petici?n solo queramos una
|
| 918 |
* parte de ellos.
|
| 919 |
* @param stepBuffer El buffer puede empezar a escribirse a partir de un pixel determinado y acabar de escribir antes
|
| 920 |
* de fin de buffer. Este par?metro indica el desplazamiento desde el inicio del buffer y la posici?n final.
|
| 921 |
* <UL>
|
| 922 |
* <LI>stepBuffer[0]:Desplazamiento en X desde el inicio</LI>
|
| 923 |
* <LI>stepBuffer[1]:Desplazamiento en Y desde el inicio</LI>
|
| 924 |
* <LI>stepBuffer[2]:Posici?n X final</LI>
|
| 925 |
* <LI>stepBuffer[3]:Posici?n Y final</LI>
|
| 926 |
* </UL>
|
| 927 |
* @throws GdalException
|
| 928 |
*/
|
| 929 |
private void readData(IBuffer buf, BandList bandList, int x, int y, int w, int h, |
| 930 |
int bufWidth, int bufHeight, int stpX, int stpY, int[] stepBuffer) throws GdalException { |
| 931 |
//TODO: FUNCIONALIDAD: Orientaci?n del raster. orientaion[0] para pixels en X y orientation[1] para pixels en Y
|
| 932 |
GdalBuffer gdalBuf = null;
|
| 933 |
for(int iBand = 0; iBand < gdalBands.length; iBand++){ |
| 934 |
int[] drawableBands = bandList.getBufferBandToDraw(fileName, iBand); |
| 935 |
if(drawableBands == null || (drawableBands.length == 1 && drawableBands[0] == -1)) |
| 936 |
continue;
|
| 937 |
int init = (int)((bufWidth * stpY) + stpX); //Pos inicial. Desplazamos stpX pixels hacia la derecha y bajamos stpY lineas |
| 938 |
int pos = init;
|
| 939 |
gdalBuf = gdalBands[iBand].readRaster(x, y, w, h, bufWidth, bufHeight, dataType); |
| 940 |
if(dataType == Gdal.GDT_Byte){
|
| 941 |
for (int line = stepBuffer[1]; line < stepBuffer[3]/*buf.getHeight()*/; line++) { |
| 942 |
pos = (int)((bufWidth * (line - stepBuffer[0])) + init); |
| 943 |
for (int col = stepBuffer[0]; col < stepBuffer[2]/*buf.getWidth()*/; col ++){ |
| 944 |
buf.setElem(line, col, iBand, gdalBuf.buffByte[pos]); |
| 945 |
pos ++; |
| 946 |
} |
| 947 |
} |
| 948 |
}else if((dataType == Gdal.GDT_UInt16) || (dataType == Gdal.GDT_Int16) || (dataType == Gdal.GDT_CInt16)){ |
| 949 |
for (int line = stepBuffer[1]; line < stepBuffer[3]; line++) { |
| 950 |
pos = (int)((bufWidth * (line - stepBuffer[0])) + init); |
| 951 |
for (int col = stepBuffer[0]; col < stepBuffer[2]; col ++){ |
| 952 |
buf.setElem(line, col, iBand, gdalBuf.buffShort[pos]); |
| 953 |
pos ++; |
| 954 |
} |
| 955 |
} |
| 956 |
}else if((dataType == Gdal.GDT_UInt32) || (dataType == Gdal.GDT_Int32) || (dataType == Gdal.GDT_CInt32)){ |
| 957 |
for (int line = stepBuffer[1]; line < stepBuffer[3]; line++) { |
| 958 |
pos = (int)((bufWidth * (line - stepBuffer[0])) + init); |
| 959 |
for (int col = stepBuffer[0]; col < stepBuffer[2]; col ++){ |
| 960 |
buf.setElem(line, col, iBand, gdalBuf.buffInt[pos]); |
| 961 |
pos ++; |
| 962 |
} |
| 963 |
} |
| 964 |
}else if(dataType == Gdal.GDT_Float32){ |
| 965 |
for (int line = stepBuffer[1]; line < stepBuffer[3]; line++) { |
| 966 |
pos = (int)((bufWidth * (line - stepBuffer[0])) + init); |
| 967 |
for (int col = stepBuffer[0]; col < stepBuffer[2]; col ++){ |
| 968 |
buf.setElem(line, col, iBand, gdalBuf.buffFloat[pos]); |
| 969 |
pos ++; |
| 970 |
} |
| 971 |
} |
| 972 |
}else if(dataType == Gdal.GDT_Float64){ |
| 973 |
for (int line = stepBuffer[1]; line < stepBuffer[3]; line++) { |
| 974 |
pos = (int)((bufWidth * (line - stepBuffer[0])) + init); |
| 975 |
for (int col = stepBuffer[0]; col < stepBuffer[2]; col ++){ |
| 976 |
buf.setElem(line, col, iBand, gdalBuf.buffDouble[pos]); |
| 977 |
pos ++; |
| 978 |
} |
| 979 |
} |
| 980 |
} |
| 981 |
} |
| 982 |
} |
| 983 |
|
| 984 |
/**
|
| 985 |
* Lee una ventana de datos sin resampleo a partir de coordenadas en pixeles. Esta funci?n es usuada por
|
| 986 |
* readWindow para coordenadas reales y readWindow en coordenadas pixel.
|
| 987 |
* @param buf Buffer donde se almacenan los datos
|
| 988 |
* @param bandList Lista de bandas que queremos leer y sobre que bandas del buffer de destino queremos escribirlas
|
| 989 |
* @param x Posici?n X en pixeles
|
| 990 |
* @param y Posici?n Y en pixeles
|
| 991 |
* @param w Ancho en pixeles
|
| 992 |
* @param yMax altura m?xima de y
|
| 993 |
* @throws GdalException
|
| 994 |
*/
|
| 995 |
private void readDataByLine(IBuffer buf, BandList bandList, int x, int y, int w, int yMax) throws GdalException { |
| 996 |
GdalBuffer gdalBuf = null;
|
| 997 |
int rasterBufLine;
|
| 998 |
for(int iBand = 0; iBand < gdalBands.length; iBand++){ |
| 999 |
int[] drawableBands = bandList.getBufferBandToDraw(fileName, iBand); |
| 1000 |
if(drawableBands == null || (drawableBands.length == 1 && drawableBands[0] == -1)) |
| 1001 |
continue;
|
| 1002 |
if(dataType == Gdal.GDT_Byte){
|
| 1003 |
for (int line = y; line < yMax; line++) { |
| 1004 |
gdalBuf = gdalBands[iBand].readRaster(x, line, w, 1, w, 1, dataType); |
| 1005 |
rasterBufLine = line - y; |
| 1006 |
//for(int drawBands = 0; drawBands < drawableBands.length; drawBands++)
|
| 1007 |
//buf.setLineInBandByte(gdalBuf.buffByte, rasterBufLine, drawableBands[drawBands]);
|
| 1008 |
buf.setLineInBandByte(gdalBuf.buffByte, rasterBufLine, iBand); |
| 1009 |
} |
| 1010 |
}else if((dataType == Gdal.GDT_UInt16) || (dataType == Gdal.GDT_Int16) || (dataType == Gdal.GDT_CInt16)){ |
| 1011 |
for (int line = y; line < yMax; line++) { |
| 1012 |
gdalBuf = gdalBands[iBand].readRaster(x, line, w, 1, w, 1, dataType); |
| 1013 |
rasterBufLine = line - y; |
| 1014 |
//for(int drawBands = 0; drawBands < drawableBands.length; drawBands++)
|
| 1015 |
//buf.setLineInBandShort(gdalBuf.buffShort, rasterBufLine, drawableBands[drawBands]);
|
| 1016 |
buf.setLineInBandShort(gdalBuf.buffShort, rasterBufLine, iBand); |
| 1017 |
} |
| 1018 |
}else if((dataType == Gdal.GDT_UInt32) || (dataType == Gdal.GDT_Int32) || (dataType == Gdal.GDT_CInt32)){ |
| 1019 |
for (int line = y; line < yMax; line++) { |
| 1020 |
gdalBuf = gdalBands[iBand].readRaster(x, line, w, 1, w, 1, dataType); |
| 1021 |
rasterBufLine = line - y; |
| 1022 |
//for(int drawBands = 0; drawBands < drawableBands.length; drawBands++)
|
| 1023 |
//buf.setLineInBandInt(gdalBuf.buffInt, rasterBufLine, drawableBands[drawBands]);
|
| 1024 |
buf.setLineInBandInt(gdalBuf.buffInt, rasterBufLine, iBand); |
| 1025 |
} |
| 1026 |
}else if(dataType == Gdal.GDT_Float32){ |
| 1027 |
for (int line = y; line < yMax; line++) { |
| 1028 |
gdalBuf = gdalBands[iBand].readRaster(x, line, w, 1, w, 1, dataType); |
| 1029 |
rasterBufLine = line - y; |
| 1030 |
//for(int drawBands = 0; drawBands < drawableBands.length; drawBands++)
|
| 1031 |
//buf.setLineInBandFloat(gdalBuf.buffFloat, rasterBufLine, drawableBands[drawBands]);
|
| 1032 |
buf.setLineInBandFloat(gdalBuf.buffFloat, rasterBufLine, iBand); |
| 1033 |
} |
| 1034 |
}else if(dataType == Gdal.GDT_Float64){ |
| 1035 |
for (int line = y; line < yMax; line++) { |
| 1036 |
gdalBuf = gdalBands[iBand].readRaster(x, line, w, 1, w, 1, dataType); |
| 1037 |
rasterBufLine = line - y; |
| 1038 |
//for(int drawBands = 0; drawBands < drawableBands.length; drawBands++)
|
| 1039 |
//buf.setLineInBandDouble(gdalBuf.buffDouble, rasterBufLine, drawableBands[drawBands]);
|
| 1040 |
buf.setLineInBandDouble(gdalBuf.buffDouble, rasterBufLine, iBand); |
| 1041 |
} |
| 1042 |
} |
| 1043 |
} |
| 1044 |
} |
| 1045 |
|
| 1046 |
public Object[] getData(int x, int y) { |
| 1047 |
try {
|
| 1048 |
Object[] data = new Object[getRasterCount()]; |
| 1049 |
for(int i = 0; i < getRasterCount(); i++){ |
| 1050 |
GdalRasterBand rb = getRasterBand(i + 1);
|
| 1051 |
GdalBuffer r = rb.readRaster(x, y, 1, 1, 1, 1, dataType); |
| 1052 |
switch(dataType){
|
| 1053 |
case 0: break; //Sin tipo |
| 1054 |
case 1: data[i] = new Integer(r.buffByte[0]); //Buffer byte (8) |
| 1055 |
break;
|
| 1056 |
case 2: //Buffer short (16) |
| 1057 |
case 3: data[i] = new Integer(r.buffShort[0]); //Buffer short (16) |
| 1058 |
break;
|
| 1059 |
case 4: //Buffer int (32) |
| 1060 |
case 5: data[i] = new Integer(r.buffInt[0]); //Buffer int (32) |
| 1061 |
break;
|
| 1062 |
case 6: data[i] = new Float(r.buffFloat[0]); //Buffer float (32) |
| 1063 |
break;
|
| 1064 |
case 7: data[i] = new Double(r.buffDouble[0]); //Buffer double (64) |
| 1065 |
break;
|
| 1066 |
} |
| 1067 |
} |
| 1068 |
return data;
|
| 1069 |
} catch (GdalException e) {
|
| 1070 |
return null; |
| 1071 |
} |
| 1072 |
} |
| 1073 |
|
| 1074 |
/**
|
| 1075 |
* Dado unas coordenadas reales, un tama?o de buffer y un tama?o de raster.
|
| 1076 |
* Si el buffer es de mayor tama?o que el raster (supersampleo) quiere decir que
|
| 1077 |
* por cada pixel de buffer se repiten varios del raster. Esta funci?n calcula el
|
| 1078 |
* n?mero de pixels de desplazamiento en X e Y que corresponden al primer pixel del
|
| 1079 |
* buffer en la esquina superior izquierda. Esto es necesario porque la coordenada
|
| 1080 |
* solicitada es real y puede no caer sobre un pixel completo. Este calculo es
|
| 1081 |
* util cuando un cliente quiere supersamplear sobre un buffer y que no se lo haga
|
| 1082 |
* el driver autom?ticamente.
|
| 1083 |
* @param dWorldTLX Coordenada real X superior izquierda
|
| 1084 |
* @param dWorldTLY Coordenada real Y superior izquierda
|
| 1085 |
* @param dWorldBRX Coordenada real X inferior derecha
|
| 1086 |
* @param dWorldBRY Coordenada real Y inferior derecha
|
| 1087 |
* @param nWidth Ancho del raster
|
| 1088 |
* @param nHeight Alto del raster
|
| 1089 |
* @param bufWidth Ancho del buffer
|
| 1090 |
* @param bufHeight Alto del buffer
|
| 1091 |
* @return Array de dos elementos con el desplazamiento en X e Y.
|
| 1092 |
*/
|
| 1093 |
/*public int[] calcSteps(double dWorldTLX, double dWorldTLY, double dWorldBRX, double dWorldBRY,
|
| 1094 |
double nWidth, double nHeight, int bufWidth, int bufHeight){
|
| 1095 |
Point2D tl = worldToRaster(new Point2D.Double(dWorldTLX, dWorldTLY));
|
| 1096 |
Point2D br = worldToRaster(new Point2D.Double(dWorldBRX, dWorldBRY));
|
| 1097 |
|
| 1098 |
int x = (int) tl.getX();
|
| 1099 |
int y = (int) tl.getY();
|
| 1100 |
|
| 1101 |
int stpX = (int)(((tl.getX() - x) * bufWidth) / Math.abs(br.getX() - tl.getX()));
|
| 1102 |
int stpY = (int)(((tl.getY() - y) * bufHeight) / Math.abs(br.getY() - tl.getY()));
|
| 1103 |
|
| 1104 |
return new int[]{stpX, stpY};
|
| 1105 |
}*/
|
| 1106 |
|
| 1107 |
public int getBlockSize(){ |
| 1108 |
return this.getBlockSize(); |
| 1109 |
} |
| 1110 |
|
| 1111 |
} |
| 1112 |
|
| 1113 |
|
| 1114 |
|
| 1115 |
|