gvsig-raster / org.gvsig.raster / trunk / org.gvsig.raster / org.gvsig.raster.algorithm / src / main / java / org / gvsig / raster / algorithm / process / ProcessUtils.java @ 2106
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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.algorithm.process; |
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import java.awt.Component; |
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import java.awt.geom.AffineTransform; |
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import java.awt.geom.Point2D; |
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import java.awt.geom.Rectangle2D; |
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import java.util.ArrayList; |
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import java.util.List; |
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import javax.swing.JOptionPane; |
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import org.gvsig.fmap.dal.coverage.RasterLocator; |
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import org.gvsig.fmap.dal.coverage.RasterManager; |
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import org.gvsig.fmap.dal.coverage.dataset.Buffer; |
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import org.gvsig.fmap.dal.coverage.dataset.BufferParam; |
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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.datastruct.Params; |
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import org.gvsig.fmap.dal.coverage.exception.BufferCreationException; |
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import org.gvsig.fmap.dal.coverage.exception.InvalidSetViewException; |
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import org.gvsig.fmap.dal.coverage.exception.ProcessInterruptedException; |
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import org.gvsig.fmap.dal.coverage.exception.RasterDriverException; |
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import org.gvsig.fmap.dal.coverage.grid.ROI; |
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import org.gvsig.fmap.dal.coverage.store.DataServerWriter; |
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import org.gvsig.fmap.dal.coverage.store.RasterDataStore; |
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import org.gvsig.fmap.dal.coverage.store.RasterQuery; |
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import org.gvsig.fmap.dal.coverage.store.RasterWriter; |
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import org.gvsig.fmap.dal.coverage.store.props.ColorInterpretation; |
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import org.gvsig.i18n.Messages; |
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import org.slf4j.LoggerFactory; |
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/**
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* Clase base de todos los procesos raster. En ella se genstionan todas las
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* funciones comunes como incremento de la tarea, gesti?n de eventos a la tarea,
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* par?metros de la tarea, etc ...
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*
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* 18/12/2007
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* @author Nacho Brodin nachobrodin@gmail.com
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*/
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public abstract class ProcessUtils { |
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/**
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* Registra un mensaje de error en el log de gvSIG
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* @param msg Mensaje a guardar en el log
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* @param parent Objeto que hizo disparar el mensaje
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* @param exception Excepcion que ha sido recogida
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*/
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public void debug(String msg, Object parent, Exception exception) { |
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if(parent != null) |
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LoggerFactory |
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.getLogger(parent.getClass()).debug(Messages.getText(msg), exception); |
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} |
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/**
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* Shows a error dialog with a text and a accept button
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* @param msg Message to show in the dialog
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* @param parentWindow Parent window
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*/
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public void messageBoxError(String msg, Object parentWindow){ |
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String string = Messages.getText("accept"); |
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Object[] options = {string}; |
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JOptionPane.showOptionDialog((Component)parentWindow, |
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"<html>" + Messages.getText(msg).replaceAll("\n", "<br>") + "</html>", |
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Messages.getText("confirmacion"),
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JOptionPane.OK_OPTION,
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JOptionPane.ERROR_MESSAGE,
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null,
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options, |
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string); |
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} |
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/**
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* Muestra un dialogo de error con un texto y un bot?n de aceptar. El error es
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* registrado en el log de gvSIG con la excepcion que se le pase por parametro
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* @param msg Mensaje a mostrar en el dialogo.
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* @param parentWindow Ventana desde la que se lanza el dialogo
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* @param exception Excepcion que ha sido recogida
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*/
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public void messageBoxError(String msg, Object parentWindow, Exception exception) { |
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debug(msg, parentWindow, exception); |
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messageBoxError(msg, parentWindow); |
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} |
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/**
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* Muestra un dialogo de error con un texto y un bot?n de aceptar. Se le pasa como ?ltimo par?metros
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* una lista de excepciones que ser?n guardadas en el log
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* @param msg Mensaje a mostrar en el dialogo.
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* @param parentWindow Ventana desde la que se lanza el dialogo
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* @param exception Excepcion que ha sido recogida
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*/
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public void messageBoxError(String msg, Object parentWindow, ArrayList<Exception> exception) { |
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for (int i = 0; i < exception.size(); i++) |
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debug(msg, parentWindow, exception.get(i)); |
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messageBoxError(msg, parentWindow); |
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} |
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/**
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* Exports a raster buffer to disk
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* @param sFilename
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* @param buf
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* @param cellsize
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* @param minX
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* @param minY
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* @return
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*/
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public boolean exportRaster(final String sFilename, |
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Buffer buf,
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Buffer alphaBuffer,
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double cellsize,
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double minX,
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double minY) {
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try {
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RasterManager manager = RasterLocator.getManager(); |
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final DataServerWriter writerBufferServer = manager.createDataServerWriter();
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writerBufferServer.setBuffer(buf, -1);
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int nBands = buf.getBandCount();
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ColorInterpretation colorInterpretation = null;
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if(alphaBuffer != null) { |
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writerBufferServer.setAlphaBuffer(alphaBuffer); |
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nBands ++; |
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colorInterpretation = RasterLocator.getManager().getDataStructFactory().createColorInterpretation( |
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new String[] { |
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ColorInterpretation.RED_BAND, |
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ColorInterpretation.GREEN_BAND, |
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ColorInterpretation.BLUE_BAND, |
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ColorInterpretation.ALPHA_BAND}); |
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} else {
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if(nBands == 1) |
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colorInterpretation = RasterLocator.getManager().getDataStructFactory().createColorInterpretation( |
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new String[] { ColorInterpretation.GRAY_BAND }); |
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} |
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final Params params = manager.createWriterParams(sFilename);
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final AffineTransform affineTransform = |
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new AffineTransform(cellsize, 0, 0, |
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-cellsize, minX, minY); |
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final RasterWriter writer = manager.createWriter(
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writerBufferServer, |
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sFilename, |
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nBands, |
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affineTransform, |
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buf.getWidth(), |
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buf.getHeight(), |
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buf.getDataType(), |
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params, |
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null);
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if(colorInterpretation != null) |
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writer.setColorBandsInterpretation(colorInterpretation.getValues()); |
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writer.dataWrite(); |
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writer.writeClose(); |
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} catch (final Exception e) { |
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e.printStackTrace(); |
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return false; |
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} |
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return true; |
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} |
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/**
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* Exports a raster buffer to disk
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* @param sFilename
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* @param buf
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* @param cellsize
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* @param minX
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* @param minY
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* @return
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*/
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public boolean exportRaster(final String sFilename, |
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Buffer buf,
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double cellsize,
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double minX,
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double minY) {
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return exportRaster(sFilename, buf, null, cellsize, minX, minY); |
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} |
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/**
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* Gets a list of rectangles which represents the pixel coordinates of each DataStore.
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* This rectangle is the area that intersects with the other DataStores in the list.
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* @param dataStoreList
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* @return
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*/
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protected Rectangle2D[] getIntersectionInPxCoords(RasterDataStore[] dataStoreList) { |
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Extent extentIntersect = null;
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int nRectangles = 0; |
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for (int i = 0; i < dataStoreList.length; i++) { |
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if(dataStoreList[i] != null) { |
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if(extentIntersect == null) |
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extentIntersect = dataStoreList[i].getExtent(); |
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else
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extentIntersect = extentIntersect.intersection(dataStoreList[i].getExtent()); |
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nRectangles ++; |
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} |
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} |
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Rectangle2D[] result = new Rectangle2D[nRectangles]; |
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Point2D p1 = new Point2D.Double(extentIntersect.getULX(), extentIntersect.getULY()); |
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Point2D p2 = new Point2D.Double(extentIntersect.getLRX(), extentIntersect.getLRY()); |
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int cont = 0; |
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for (int i = 0; i < dataStoreList.length; i++) { |
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if(dataStoreList[i] != null) { |
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Point2D init = dataStoreList[i].worldToRaster(p1);
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Point2D end = dataStoreList[i].worldToRaster(p2);
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result[cont] = new Rectangle2D.Double( |
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init.getX(), |
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init.getY(), |
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Math.abs(end.getX() - init.getX()),
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Math.abs(end.getY() - init.getY()));
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cont++; |
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} |
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} |
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return result;
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} |
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/**
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* Checks if the point in pixel coordinates is inside the region of
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* interest or not. The point will be
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* @param x
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* @param y
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* @param rois
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* @param extentResult
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* Bounding box of the area to which belongs the point defined in pixel coordinates (x, y)
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* @return
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*/
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public boolean isInsideOfROI(int x, int y, List<ROI> rois, Extent extentResult) { |
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if(rois == null || rois.size() == 0) |
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return true; |
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ROI roi = rois.get(0);
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int[] shift = getROIAnalysisShift(extentResult, roi.getStore().getExtent(), roi.getStore().getCellSize()); |
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for (int i = 0; i < rois.size(); i++) { |
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if(rois.get(i).isInsideOfPolygon(x + shift[0], y + shift[1])) |
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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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* Gets the shift in pixels between the source bounding box and the result bounding box.
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* This is useful to get if a pixel is inside a region of interest because the ROI has
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* associate the source.
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* @param extentResult
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* @param sourceExtent
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* @return
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*/
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private int[] getROIAnalysisShift(Extent extentResult, Extent sourceExtent, double cellsize) { |
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double xDistance = Math.abs(extentResult.getULX() - sourceExtent.getULX()); |
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double yDistance = Math.abs(extentResult.getULY() - sourceExtent.getULY()); |
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return new int[]{(int)(xDistance / cellsize), (int)(yDistance / cellsize)}; |
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} |
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/**
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* Gets the bounding box taking into account whether there are ROIs or not
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* @return
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*/
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public Extent getExtentResult(List<ROI> rois, RasterDataStore store) { |
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if(rois == null) |
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return store.getExtent();
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else {
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Extent maxExtent = null;
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for (int i = 0; i < rois.size(); i++) { |
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if(i == 0) |
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maxExtent = rois.get(i).getROIExtent(); |
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else
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maxExtent = maxExtent.encloseBoundinBoxes(rois.get(i).getROIExtent()); |
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} |
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return maxExtent.intersection(store.getExtent());
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} |
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} |
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/**
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* Gets the bounding box of the source in pixel coordinates
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* @param resultExtent
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* @return
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*/
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public Rectangle2D getSourcePxBox(Extent resultExtent, RasterDataStore store) { |
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if(resultExtent == null || resultExtent.equals(store.getExtent())) |
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return new Rectangle2D.Double(0, 0, store.getWidth(), store.getHeight()); |
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Point2D p1 = store.worldToRaster(new Point2D.Double(resultExtent.getULX(), resultExtent.getULY())); |
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Point2D p2 = store.worldToRaster(new Point2D.Double(resultExtent.getLRX(), resultExtent.getLRY())); |
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return new Rectangle2D.Double(p1.getX(), p1.getY(), Math.abs(p2.getX() - p1.getX()), Math.abs(p2.getY() - p1.getY())); |
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} |
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/**
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* Builds the output buffer
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* @param sourcePxBBox
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* @param bandCount
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* @return
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*/
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public Buffer createOutputBuffer(int w, int h, int bandCount) { |
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return createOutputBuffer(w, h, bandCount, Buffer.TYPE_DOUBLE); |
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} |
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public Buffer createOutputBuffer(int w, int h, int bandCount, int datatype) { |
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RasterManager rManager = RasterLocator.getManager(); |
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BufferParam bParams = rManager.getBufferFactory().createBufferParams( |
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w, |
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h, |
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bandCount, |
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datatype, |
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true);
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Buffer resultBuffer = null; |
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try {
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resultBuffer = rManager.getBufferFactory().createBuffer(bParams); |
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} catch (BufferCreationException e) {
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new ProcessException("Error creating the output buffer", e); |
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} |
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return resultBuffer;
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} |
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/**
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* Gets a data buffer from a <code>RasterDataStore</code>
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*/
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public Buffer createSourceBuffer(RasterDataStore store, Rectangle2D sourcePxBBox, boolean[] bands) throws ProcessException { |
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RasterManager rManager = RasterLocator.getManager(); |
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RasterQuery query = rManager.createQuery(); |
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query.setReadOnly(true);
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int nBands = getNumberOfSelectedBands(bands);
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int count = 0; |
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int[] drawableBands = new int[nBands]; |
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for (int i = 0; i < bands.length; i++) { |
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if(bands[i]) {
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drawableBands[count] = i; |
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count ++; |
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} |
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} |
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query.setDrawableBands(drawableBands); |
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query.setAreaOfInterest( |
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(int)sourcePxBBox.getX(),
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(int)sourcePxBBox.getY(),
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(int)sourcePxBBox.getWidth(),
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(int)sourcePxBBox.getHeight());
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try {
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Buffer buffer = null; |
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try {
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buffer = store.query(query); |
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} catch (RasterDriverException e) {
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new ProcessException("Error creating the input buffer", e); |
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} catch (InvalidSetViewException e) {
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new ProcessException("Error creating the input buffer", e); |
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} |
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return buffer;
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} catch (ProcessInterruptedException e) {
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} |
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return null; |
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} |
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/**
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* Gets the number of the selected bands from a list of boolean values.
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* Each element in this list represents a band and true or false if the band
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* will be used in the task.
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* @param bandsPCs
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* @return
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*/
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private int getNumberOfSelectedBands(boolean[] b) { |
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int bandCount = 0; |
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for (int i = 0; i < b.length; i++) { |
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if(b[i])
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bandCount++; |
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} |
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return bandCount;
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} |
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|
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/**
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* Gets a value of the buffer in double format
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* @param b
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* @param row
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* @param col
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* @param band
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* @return
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*/
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protected double getData(Buffer b, int row, int col, int band) { |
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if(b.getDataType() == Buffer.TYPE_BYTE) { |
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return (double)b.getElemByte(row, col, band); |
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} |
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if(b.getDataType() == Buffer.TYPE_DOUBLE) { |
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return b.getElemDouble(row, col, band);
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} |
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if(b.getDataType() == Buffer.TYPE_FLOAT) { |
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return (double)b.getElemFloat(row, col, band); |
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} |
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if(b.getDataType() == Buffer.TYPE_INT) { |
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return (double)b.getElemInt(row, col, band); |
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} |
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if(b.getDataType() == Buffer.TYPE_SHORT) { |
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return (double)b.getElemShort(row, col, band); |
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} |
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NoData nd = RasterLocator.getManager().getDataStructFactory().createDefaultNoData(1, Buffer.TYPE_DOUBLE); |
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return nd.getValue().doubleValue();
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} |
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} |