root / trunk / extensions / extRemoteSensing / src / es / idr / teledeteccion / gridmath / GridMathProcess.java @ 12181
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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 Instituto de Desarrollo Regional 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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* For more information, contact:
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*
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* Generalitat Valenciana
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* Conselleria d'Infraestructures i Transport
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* Av. Blasco Iba?ez, 50
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* 46010 VALENCIA
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* SPAIN
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*
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* +34 963862235
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* gvsig@gva.es
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* www.gvsig.gva.es
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*
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* or
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*
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* Instituto de Desarrollo Regional (Universidad de Castilla La-Mancha)
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* Campus Universitario s/n
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* 02071 Alabacete
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* Spain
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*
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* +34 967 599 200
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*/
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package es.idr.teledeteccion.gridmath; |
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import java.awt.Component; |
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import java.io.File; |
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import java.io.IOException; |
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import java.util.HashMap; |
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import java.util.Iterator; |
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import javax.swing.JOptionPane; |
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import org.gvsig.fmap.layers.FLyrRasterSE; |
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import org.gvsig.gui.beans.incrementabletask.IIncrementable; |
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import org.gvsig.gui.beans.incrementabletask.IncrementableEvent; |
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import org.gvsig.gui.beans.incrementabletask.IncrementableListener; |
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import org.gvsig.gui.beans.incrementabletask.IncrementableTask; |
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import org.gvsig.raster.buffer.RasterBuffer; |
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import org.gvsig.raster.buffer.RasterBufferInvalidAccessException; |
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import org.gvsig.raster.buffer.RasterBufferInvalidException; |
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import org.gvsig.raster.dataset.GeoRasterWriter; |
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import org.gvsig.raster.dataset.IBuffer; |
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import org.gvsig.raster.dataset.NotSupportedExtensionException; |
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import org.gvsig.raster.dataset.RasterDriverException; |
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import org.gvsig.raster.grid.Grid; |
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import org.gvsig.raster.grid.GridExtent; |
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import org.gvsig.raster.grid.OutOfGridException; |
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import org.gvsig.rastertools.cutting.WriterBufferServer; |
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import org.nfunk.jep.JEP; |
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import org.nfunk.jep.Variable; |
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import com.iver.andami.PluginServices; |
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import com.iver.andami.Utilities; |
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import com.iver.cit.gvsig.exceptions.layers.LoadLayerException; |
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import com.iver.cit.gvsig.fmap.MapContext; |
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import com.iver.cit.gvsig.fmap.layers.FLayer; |
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/**
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*
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* Funcionalidad para realizar operaciones entre grids.
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* @author Diego Guerrero Sevilla (diego.guerrero@uclm.es)
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*
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*/
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public class GridMathProcess implements Runnable, IIncrementable, IncrementableListener { |
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HashMap params = null; // Asignacion de variables a grids. |
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JEP parser = null;
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String expression = null; |
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GridExtent resultExtent = null;
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private IncrementableTask incrementableTask = null; |
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private Thread blinker = null; |
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private WriterBufferServer writerBufferServer = null; |
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private int percent = 0; |
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private boolean cancel = false; |
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private MapContext mapContext = null; |
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private String layerName = null; |
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public GridMathProcess() {
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parser = new JEP();
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parser.setAllowUndeclared(true);
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parser.addStandardFunctions(); |
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} |
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/**@param expresion: Expresion a ser evaluada
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* @param params: HashMap con los param
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* @param resultExtent Extent de salida
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* @param mapContext: Contexto de la vista
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* @param layername: nombre capa
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* */
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public GridMathProcess(String expression, HashMap params,GridExtent resultExtent,MapContext mapContext,String layerName) { |
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parser = new JEP();
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parser.setAllowUndeclared(true);
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parser.addStandardFunctions(); |
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parser.parseExpression(expression); |
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this.params = params;
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this.resultExtent= resultExtent;
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this.mapContext= mapContext;
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this.layerName= layerName;
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} |
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/**
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* @return HashMap con las variables asociadas a sus Grid correspondientes
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* */
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public HashMap getParams() { |
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return params;
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} |
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public void setParams(HashMap params) { |
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this.params = params;
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} |
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public void setExpression(String expression){ |
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this.expression = expression;
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parser.getSymbolTable().clear(); |
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parser.parseExpression(expression); |
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} |
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public String getExpression() { |
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return expression;
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} |
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public boolean hasError(){ |
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if (parser!=null) |
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return parser.hasError();
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else
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return true; |
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} |
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/**
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* Lanza el proceso.
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*
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*/
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public void start() { |
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cancel = false;
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blinker = new Thread(this); |
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blinker.start(); |
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} |
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/**
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* Calculo del grid resultante. Escritura en fichero temporal y volcado a la vista.
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* */
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public void run() { |
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/*
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Comprobar que todas las variables que intervienen en la expresin
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estan en el HasMap de parmetros.
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*/
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for (Iterator iter = parser.getSymbolTable().values().iterator(); iter.hasNext();) { |
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Variable element = (Variable) iter.next(); |
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if (!params.containsKey(element.getName()))
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try {
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throw new NoAssignedVarsException(); |
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} catch (NoAssignedVarsException e) {
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e.printStackTrace(); |
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} |
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} |
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if (resultExtent == null) |
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resultExtent = ((Grid)params.values().iterator().next()).getGridExtent(); |
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// Construccion del Grid para escritura
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Grid resultGrid = null;
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try {
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resultGrid = new Grid (resultExtent,resultExtent,IBuffer.TYPE_DOUBLE,new int[]{0}); |
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} catch (RasterBufferInvalidException e) {
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e.printStackTrace(); |
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} |
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int iNX = resultGrid.getNX();
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int iNY = resultGrid.getNY();
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// Calculo de grid resultante
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for (int x=0;x<iNX;x++){ |
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if (cancel) return; //Proceso cancelado |
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for(int y=0;y<iNY;y++) |
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{
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int i=0; |
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for (Iterator iter = params.keySet().iterator(); iter.hasNext();) { |
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String varName = (String)iter.next(); |
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Grid inputGrid = (Grid)params.get(varName); |
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double value=0; |
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// Caso que el RasterBufer de la variable asociada se de tipo Byte
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if(inputGrid.getRasterBuf().getDataType() == RasterBuffer.TYPE_BYTE){
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try {
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value = inputGrid.getCellValueAsByte(x, y); |
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} catch (RasterBufferInvalidAccessException e) {
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e.printStackTrace(); |
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} |
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if(inputGrid.isInGrid(x, y)){
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parser.setVarValue(varName,new Double(value)); |
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i++; |
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} |
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else{
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resultGrid.setNoData(x,y); |
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break;
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} |
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} |
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// Caso que el RasterBufer de la variable asociada se de tipo SHORT
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if(inputGrid.getRasterBuf().getDataType() == RasterBuffer.TYPE_SHORT){
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try {
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value = inputGrid.getCellValueAsShort(x, y); |
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} catch (RasterBufferInvalidAccessException e) {
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e.printStackTrace(); |
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} |
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if(inputGrid.isInGrid(x, y)){
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parser.setVarValue(varName,new Double(value)); |
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i++; |
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} |
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else{
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resultGrid.setNoData(x,y); |
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break;
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} |
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} |
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// Caso que el RasterBufer de la variable asociada se de tipo INT
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if(inputGrid.getRasterBuf().getDataType() == RasterBuffer.TYPE_INT){
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try {
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value = inputGrid.getCellValueAsInt(x, y); |
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} catch (RasterBufferInvalidAccessException e) {
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e.printStackTrace(); |
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} |
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if(inputGrid.isInGrid(x, y)){
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parser.setVarValue(varName,new Double(value)); |
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i++; |
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} |
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else{
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resultGrid.setNoData(x,y); |
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break;
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} |
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} |
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// Caso que el RasterBufer de la variable asociada se de tipo float
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if(inputGrid.getRasterBuf().getDataType() == RasterBuffer.TYPE_FLOAT){
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try {
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value = inputGrid.getCellValueAsFloat(x, y); |
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} catch (RasterBufferInvalidAccessException e) {
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e.printStackTrace(); |
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} |
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if(inputGrid.isInGrid(x, y)){
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parser.setVarValue(varName,new Double(value)); |
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i++; |
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} |
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else{
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resultGrid.setNoData(x,y); |
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break;
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} |
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} |
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// Caso que el RasterBufer de la variable asociada se de tipo Double
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if(inputGrid.getRasterBuf().getDataType() == RasterBuffer.TYPE_DOUBLE){
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try {
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value = inputGrid.getCellValueAsDouble(x, y); |
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} catch (RasterBufferInvalidAccessException e) {
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e.printStackTrace(); |
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} |
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if(inputGrid.isInGrid(x, y)){
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parser.setVarValue(varName,new Double(value)); |
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i++; |
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} |
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else{
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resultGrid.setNoData(x,y); |
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break;
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} |
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} |
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} |
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// Evaluacion de la exprsion en el x,y.
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if (i == params.size()){
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try {
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resultGrid.setCellValue(x, y, parser.getValue()); |
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} catch (OutOfGridException e) {
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e.printStackTrace(); |
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} |
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percent = x*100/resultGrid.getNX();
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} |
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} |
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} |
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// Escritura de los datos a disco
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String fileName=Utilities.createTempDirectory()+"/" + layerName +".tif"; |
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int endIndex = fileName.lastIndexOf("."); |
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if (endIndex < 0) |
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endIndex = fileName.length(); |
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IBuffer buffer = resultGrid.getRasterBuf(); |
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writerBufferServer = new WriterBufferServer(buffer);
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try{
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GeoRasterWriter grw = GeoRasterWriter.getWriter(writerBufferServer, fileName, buffer.getBandCount(),resultExtent, buffer.getWidth(), buffer.getHeight(),buffer.getDataType(), GeoRasterWriter.getWriter(fileName).getParams()); |
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grw.dataWrite(); |
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grw.writeClose(); |
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}catch(NotSupportedExtensionException e1){
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e1.printStackTrace(); |
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} |
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catch(RasterDriverException e2){
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e2.printStackTrace(); |
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} |
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catch(IOException e3){ |
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e3.printStackTrace(); |
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} |
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mapContext.beginAtomicEvent(); |
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FLayer lyr = null;
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try {
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lyr = FLyrRasterSE.createLayer(layerName +".tif",new File(fileName), mapContext.getProjection()); |
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} catch (LoadLayerException e) {
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JOptionPane.showMessageDialog((Component)PluginServices.getMainFrame(), |
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PluginServices.getText(this, "error_cargar_capa")); |
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} |
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mapContext.getLayers().addLayer(lyr); |
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mapContext.endAtomicEvent(); |
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mapContext.invalidate(); |
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mapContext.endAtomicEvent(); |
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if (incrementableTask != null) |
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incrementableTask.processFinalize(); |
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}// Fin run()
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public GridExtent getResultExtent() {
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return resultExtent;
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} |
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public void setResultExtent(GridExtent resultExtent) { |
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this.resultExtent = resultExtent;
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} |
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public String getLabel() { |
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return PluginServices.getText(this,"procesando"); |
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} |
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public String getLog() { |
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if (writerBufferServer==null) |
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return PluginServices.getText(this,"calculando_imagen")+"..."; |
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else
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return PluginServices.getText(this,"escribiendo_resultado")+"..."; |
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} |
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public int getPercent() { |
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if (writerBufferServer==null) |
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return percent;
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else
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return writerBufferServer.getPercent();
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} |
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public String getTitle() { |
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return PluginServices.getText(this,"band_math"); |
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} |
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public void actionCanceled(IncrementableEvent e) { |
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if(writerBufferServer != null) |
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writerBufferServer.setCanceled(true, 0); |
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cancel = true;
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} |
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public void actionResumed(IncrementableEvent e) { |
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} |
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public void actionSuspended(IncrementableEvent e) { |
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} |
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public void setIncrementableTask(IncrementableTask incrementableTask) { |
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this.incrementableTask = incrementableTask;
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this.incrementableTask.addIncrementableListener(this); |
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} |
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} |