root / trunk / libraries / libCq_CMS_praster / src / org / cresques / io / data / Grid.java @ 8026
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/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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*
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* Copyright (C) 2006 IVER T.I. and Generalitat Valenciana.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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*/
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package org.cresques.io.data; |
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import org.cresques.io.GeoRasterFile; |
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import org.cresques.io.datastruct.Histogram; |
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import org.cresques.io.datastruct.Statistic; |
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import org.cresques.io.exceptions.FileFoundInListException; |
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import org.cresques.px.Extent; |
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import org.cresques.px.PxRaster; |
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import org.cresques.util.Utilities; |
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public class Grid implements IQueryableRaster, IWritableRaster { |
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private GeoRasterMultiFile grmf = new GeoRasterMultiFile(null); |
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private RasterBuf rasterBuf = null; |
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private Histogram histogram = null; |
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private PxRaster pxRaster = null; |
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private Statistic stats = null; |
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private int width = 0; |
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private int height = 0; |
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/**
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* Constructor
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*/
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public Grid(){}
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/**
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* Constructor
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* @param grf Lista de geoRasterFile
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*/
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public Grid(GeoRasterFile[] grf){ |
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for(int i = 0; i< grf.length; i++) |
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addFile(grf[i]); |
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} |
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/**
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* Constructor
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* @param grf GeoRasterFile
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*/
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public Grid(GeoRasterFile grf){
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addFile(grf); |
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} |
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/**
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* Asigna el renderizador para el calculo de histogramas a partir
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* de la visualizaci?n.
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* @param pxR Renderizador.
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*/
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public void addRenderizer(PxRaster pxR){ |
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this.pxRaster = pxR;
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this.stats = pxR.stats;
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this.getHistogram().addRenderizer(pxR);
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} |
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/**
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* A?ade un GeoRasterFile al Grid
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* @param grf GeoRasterFile a a?adir
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*/
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public void addFile(GeoRasterFile grf){ |
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try{
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grmf.addFile(grf); |
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width = grf.getWidth(); |
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height = grf.getHeight(); |
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}catch(FileFoundInListException e){
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//El fichero est? en la lista por lo que no lo a?adimos
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} |
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} |
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/**
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* Elimina un GeoRasterFile del Grid
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* @param grf GeoRasterFile a eliminar
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*/
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public void removeFile(GeoRasterFile grf){ |
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grmf.removeFile(grf); |
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} |
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/**
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* Obtiene la estructura que contiene la lista de ficheros del Grid
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* @return GeoRasterMultiFile
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*/
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public GeoRasterMultiFile getGeoRasterMultiFile(){
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return grmf;
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} |
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/**
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* Libera el buffer de memoria
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*/
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public void free(){ |
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rasterBuf = null;
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System.gc();
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} |
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/**
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* Resetea la asignaci?n de dibujado de las bandas de la imagen
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* sobre el DataImage cuando se hace un update para esta banda.
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*/
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public void clearDrawableBand(){ |
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for(int i = 0; i< grmf.getFileCount(); i++) |
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grmf.getBands().clearDrawableBand(); |
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} |
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/**
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* Para este GeoRasterFile asigna que bandas se pintaran
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* sobre el RasterBuf cuando se haga un update. Cada posici?n del vector es una banda
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* del rasterBuf y el contenido de esa posici?n es la banda de la imagen que se dibujar?
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* sobre ese RasterBuf.
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* @param drawableBands .
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*/
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public void addDrawableBands(int[] drawableBands){ |
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for(int i = 0; i< drawableBands.length; i++) |
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grmf.getBands().addDrawableBand(i, drawableBands[i]); |
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} |
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/**
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* Asigna el ?rea de interes en coordenadas del mundo real. Si las coordenadas exceden del tama?o de la imagen
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* estas coordenadas son ajustadas el extent.
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* @param x Coordenada X, esquina superior izquierda
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* @param y Coordenada Y, esquina superior izquierda
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* @param w Ancho del ?rea
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* @param h Alto del ?rea
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* @throws ArrayIndexOutOfBoundsException
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*/
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public void setAreaOfInterest(double x, double y, double w, double h) throws ArrayIndexOutOfBoundsException{ |
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Extent ext = new Extent(x, y, x + w, y + h);
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ext = Utilities.calculateAdjustedView(ext, grmf.getExtent());
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rasterBuf = grmf.getWindowRaster(x, y, w, h); |
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//width = rasterBuf.getWidth();
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//height = rasterBuf.getHeight();
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} |
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/**
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* Asigna el ?rea de interes en coordenadas pixel. Si las coordenadas exceden del tama?o de la imagen
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* lanza una excepci?n.
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* @param x Coordenada X, esquina superior izquierda
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* @param y Coordenada Y, esquina superior izquierda
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* @param w Ancho del ?rea
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* @param h Alto del ?rea
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* @throws ArrayIndexOutOfBoundsException
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*/
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public void setAreaOfInterest(int x, int y, int w, int h) throws ArrayIndexOutOfBoundsException{ |
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if((x + w) > getWidth() || (y + h) > getHeight())
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throw new ArrayIndexOutOfBoundsException("Out of Image"); |
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rasterBuf = grmf.getWindowRaster(x, y, w, h); |
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//width = rasterBuf.getWidth();
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//height = rasterBuf.getHeight();
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} |
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/**
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* Ajusta el ?rea del grid a un ancho y un alto dado en pixeles. Este ajuste se har?
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* en relaci?n a un m?todo de interpolaci?n definido en el par?metro.
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* @param w Ancho de la nueva imagen.
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* @param h Alto de la nueva imagen.
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* @param interpolation M?todo de interpolaci?n que se usar? en el ajuste.
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* @param bands Bandas que se desea en el nuevo RasterBuf ajustado. Si este par?metro es null
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* se usar?n todas las bandas de la imagen.
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*/
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public void setAdjustedWindow(int w, int h, int interpolationMethod, int[] bands){ |
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if(w == width && h == height)
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return;
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switch(interpolationMethod){
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case IQueryableRaster.INTERPOLATION_NearestNeighbour:
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rasterBuf = rasterBuf.adjustRasterNearestNeighbour(w, h, bands); |
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break;
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case IQueryableRaster.INTERPOLATION_Bilinear:
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System.out.println("Method not implemented yet"); |
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break;
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case IQueryableRaster.INTERPOLATION_InverseDistance:
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System.out.println("Method not implemented yet"); |
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break;
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case IQueryableRaster.INTERPOLATION_BicubicSpline:
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System.out.println("Method not implemented yet"); |
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break;
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case IQueryableRaster.INTERPOLATION_BSpline:
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System.out.println("Method not implemented yet"); |
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break;
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} |
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//width = rasterBuf.getWidth();
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//height = rasterBuf.getHeight();
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} |
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public RasterBuf getData(int x, int y, int w, int h) { |
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return null; |
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} |
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/**
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* Obtiene el tipo de datos del grid.
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* @return entero que representa el tipo de dato de las celdas del grid.
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*/
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public int getDataType() { |
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return grmf.getDataType()[0]; |
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} |
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/**
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* Obtiene la altura del grid.
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* @return altura en celdas del grid.
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*/
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public int getHeight() { |
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return height;
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} |
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/**
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* Obtiene la anchura del grid.
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* @return anchura en celdas del grid.
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*/
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public int getWidth() { |
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return width;
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} |
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public double getXCellSize() { |
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return 0; |
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} |
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public double getYCellSize() { |
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return 0; |
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} |
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public boolean isNoData(int x, int y, int band) { |
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return false; |
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} |
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public void setDataType(int dt) { |
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} |
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public int getBandCount(){ |
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if(rasterBuf != null) |
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return rasterBuf.getBandCount();
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else
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return this.getGeoRasterMultiFile().getBandCount(); |
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} |
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/**
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* Obtiene el buffer de datos del grid
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* @return RasterBuf
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*/
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public RasterBuf getRasterBuf() {
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return rasterBuf;
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} |
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/**
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* Obtiene el objeto histograma asociado al grid
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* @return
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*/
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public Histogram getHistogram() {
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if(histogram == null) |
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histogram = new Histogram(this); |
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return histogram;
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} |
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/**
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* Obtiene la clase para estadisticas
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* @return
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*/
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public Statistic getStatistic() {
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return stats;
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} |
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/**
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* Evalua si una coordenada pixel cae dentro de la imagen.
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* @param x coordenada pixel X
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* @param y coordenada pixel Y
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*/
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public boolean isPixelInGrid(int x, int y){ |
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return (x >= 0 && y >= 0 && x <= getWidth() && y <= getHeight()); |
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} |
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/**
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* Extent del grid
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*/
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public Extent getExtent(){
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return grmf.getExtent();
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} |
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} |
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