svn-gvsig-desktop / branches / v2_0_0_prep / libraries / libRaster / src / org / gvsig / raster / grid / Grid.java @ 29786
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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.grid; |
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import java.io.IOException; |
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import java.util.Arrays; |
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import org.gvsig.raster.buffer.BufferFactory; |
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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.IBuffer; |
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import org.gvsig.raster.dataset.IRasterDataSource; |
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import org.gvsig.raster.datastruct.Extent; |
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import org.gvsig.raster.datastruct.Transparency; |
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import org.gvsig.raster.grid.filter.RasterFilterList; |
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/**
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* Clase que representa una rejilla de datos raster. Este tipo de grid tiene el interfaz necesario
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* de acceso a la informaci?n raster para aplicaciones de analisis raster. Contiene m?todos de acceso al
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* dato tanto en lectura como en escritura y encapsula operaciones entre grids. Adem?s contiene
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* objetos que contienen las caracter?sticas asociadas a ese grid. Sobre un grid pueden
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* aplicarse tambi?n operaciones de filtrado.
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*
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* Podemos crear un Grid de cinco formas distitas:
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* <UL>
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* <LI>A partir de una fuente de datos (cargada en el constructor). Se har? una petici?n del extent pasado por par?metro con las bandas seleccionadas por par?metro.</LI>
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* <LI>A partir de un extensi?n de capa, una extensi?n de vista, un tipo de dato y un n?mero de datos
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* crea un Grid vacio util para escritura.</LI>
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* <LI>A partir de una fuente de datos (cargados). Datasource se usa como buffer de datos cargados y se selecciona si queremos el reader interpolado.</LI>
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* <LI>A partir de una fuente de datos (cargada en el constructor). Se har? una petici?n del extent completo de la fuente con las bandas seleccionadas por par?metro.</LI>
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* <LI>A partir de una fuente de datos (cargada en el constructor). Se har? una petici?n del extent completo de la fuente con todas las bandas disponibles.</LI>
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* </UL>
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*
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* @author Victor Olaya (volaya@ya.com)
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* @author Nacho Brodin (nachobrodin@gmail.com)
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*/
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public class Grid implements IQueryableGrid, IWritableGrid{ |
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public final static double DEG_45_IN_RAD = Math.PI / 180. * 45.; |
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public final static double DEG_90_IN_RAD = Math.PI / 180. * 90.; |
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public final static double DEG_180_IN_RAD = Math.PI ; |
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public final static double DEG_270_IN_RAD = Math.PI / 180. * 270.; |
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public final static double DEG_360_IN_RAD = Math.PI * 2.; |
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/* neighbor's address*/ /* N NE E SE S SW W NW */ |
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private final static int m_iOffsetX []= { 0, 1, 1, 1, 0, -1, -1, -1}; |
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private final static int m_iOffsetY []= { 1, 1, 0, -1, -1, -1, 0, 1}; |
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private double m_dDist[]; |
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public double _2DX, _6DX, _DX_2, _4DX_2; |
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private int[] bands = null; |
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private int dataType = IBuffer.TYPE_UNDEFINED; |
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private RasterBuffer rasterBuf = null; |
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private GridReader reader = null; |
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private GridWriter writer = null; |
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private GridExtent windowExtent = null; |
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private GridExtent layerExtent = null; |
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private GridStatistic statistic = null; |
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private GridPalette[] palette = null; |
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private RasterFilterList filterList = null; |
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/**
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* Crea un grid a partir de un MultiRasterDataset. Usa el extent de la fuente de datos como
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* extent completo y el extent pasado como par?metro como extensi?n de ventana.
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*
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* Cuando se construye el reader se carga el buffer con la extensi?n definida en windowExtent
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* y las bandas especificadas en bands.
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*
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* @param IRasterDataSource datasets que proporcionan los datos
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* @param bands n?mero de bandas requeridas
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* @param windowExtent Extensi?n de la ventana. Si este par?metro es null se usar? el
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* mismo que el de la capa.
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*/
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public Grid(IRasterDataSource datasets, int[] bands, GridExtent windowExtent) |
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throws RasterBufferInvalidException{
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BufferFactory bufferFactory = new BufferFactory(datasets);
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double cellSize[] = calcCellSize(bufferFactory.getDataSource(), bufferFactory.getSourceWidth(), |
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bufferFactory.getSourceHeight()); |
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layerExtent = new GridExtent( bufferFactory.getDataSource().getExtent(),
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cellSize[0],
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cellSize[1]);
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if(bufferFactory.getDataSource() != null && bufferFactory.getDataSource().getDataType() != null) |
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dataType = bufferFactory.getDataSource().getDataType()[0];
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this.bands = bands;
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if(windowExtent == null) |
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this.windowExtent = layerExtent;
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else
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this.windowExtent = windowExtent;
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if (this.windowExtent.fitsIn(layerExtent)) |
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reader = new GridNotInterpolated(bufferFactory, layerExtent, this.windowExtent, bands); |
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else {
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reader = new GridInterpolated(bufferFactory, layerExtent, this.windowExtent, bands); |
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} |
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rasterBuf = (RasterBuffer)bufferFactory.getRasterBuf(); |
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writer = new GridWriter(layerExtent, dataType, rasterBuf);
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init(bufferFactory); |
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} |
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/**
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* Carga el buffer de datos desde el reader para poder escribir sobre los datos de
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* la ventana original. Esto es ?til cuando el GridWriter se crea asociado a un raster
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* pero el buffer est? vacio, por ejemplo en el caso de crear un GridInterpolated. Un
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* GridInterpolated no carga ning?n buffer en memoria sino que accede a los datos en disco
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* a medida que se le van solicitando. Por ello, no es posible modificarlos sino cargamos
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* un buffer con los datos previamente.
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*/
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public void loadWriterData() throws GridException { |
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rasterBuf = RasterBuffer.getBuffer(dataType, reader.getNX(), reader.getNY(), bands.length, true);
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writer = new GridWriter(windowExtent, dataType, rasterBuf);
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int x = 0, y = 0; |
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try{
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switch(rasterBuf.getDataType()) {
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case IBuffer.TYPE_BYTE: for (x = 0; x < getNX(); x++) { |
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for (y = 0; y < getNY(); y++) |
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writer.setCellValue(x, y, (byte)(reader.getCellValueAsByte(x, y)));
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} |
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break;
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case IBuffer.TYPE_SHORT:for (x = 0; x < getNX(); x++) { |
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for (y = 0; y < getNY(); y++) |
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writer.setCellValue(x, y, (short)(reader.getCellValueAsShort(x, y)));
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} |
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break;
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case IBuffer.TYPE_INT: for (x = 0; x < getNX(); x++) { |
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for (y = 0; y < getNY(); y++) |
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writer.setCellValue(x, y, (int)(reader.getCellValueAsInt(x, y)));
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} |
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break;
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case IBuffer.TYPE_FLOAT:for (x = 0; x < getNX(); x++) { |
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for (y = 0; y < getNY(); y++) |
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writer.setCellValue(x, y, (float)(reader.getCellValueAsFloat(x, y)));
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} |
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break;
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case IBuffer.TYPE_DOUBLE:for (x = 0; x < getNX(); x++) { |
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for (y = 0; y < getNY(); y++) |
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writer.setCellValue(x, y, (double)(reader.getCellValueAsDouble(x, y)));
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} |
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break;
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} |
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} catch (RasterBufferInvalidException e) {
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throw new GridException("Buffer de datos no v?lido " + x + " " + y, e); |
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} catch (OutOfGridException e1) {
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throw new GridException("Acceso fuera de los l?mites del Grid " + x + " " + y, e1); |
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} catch (RasterBufferInvalidAccessException e) {
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throw new GridException("Acceso al grid no v?lido " + x + " " + y, e); |
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} |
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} |
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/**
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* Crea un grid vacio a partir de un extent y un tipo de datos. Se crea un buffer vacio en el
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* que puede escribirse a trav?s del writer. Los datos escritos pueden ser consultados con el
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* reader. No tiene una fuente de datos asociada ya que es un grid vacio basicamente para
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* escritura.
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* @param layerExtent Tama?o completo de la capa
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* @param windowExtent Ventana de datos.
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* @param dataType Tipo de datos del buffer
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* @param bands n?mero de bandas requeridas y orden de dibujado en el buffer
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*/
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public Grid(GridExtent layerExtent,
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GridExtent windowExtent, |
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int dataType,
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int[] bands) throws RasterBufferInvalidException{ |
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this.windowExtent = windowExtent;
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this.layerExtent = layerExtent;
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this.dataType = dataType;
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rasterBuf = RasterBuffer.getBuffer(dataType, layerExtent.getNX(), layerExtent.getNY(), bands.length, true);
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if (windowExtent.fitsIn(layerExtent))
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reader = new GridNotInterpolated(rasterBuf, layerExtent, windowExtent, bands);
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else
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reader = new GridInterpolated(rasterBuf, layerExtent, windowExtent, bands);
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writer = new GridWriter(layerExtent, dataType, rasterBuf);
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init(null);
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} |
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/**
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* Crea un grid a partir de un BufferFactory. El buffer debe estar cargado de datos y el extent
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* de este viene definido en el par?metro windowExtent.
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* @param bufferFactory Fuente de datos
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* @param windowExtent Extent de los datos cargados en bufferFactory
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* @param notInterp Si es true fuerza a que el reader sea sin interpolaci?n. Si es false decide si
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* el reader es interpolado o no a partir de los extents de capa y la ventana seleccionada.
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*/
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public Grid(BufferFactory bufferFactory, boolean notInterp) { |
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double cellSize[] = calcCellSize(bufferFactory.getDataSource(), bufferFactory.getSourceWidth(), |
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bufferFactory.getSourceHeight()); |
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this.layerExtent = new GridExtent( bufferFactory.getDataSource().getExtent(), |
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cellSize[0],
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cellSize[1]);
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if(bufferFactory.getDataSource() != null && bufferFactory.getDataSource().getDataType() != null) |
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dataType = bufferFactory.getDataSource().getDataType()[0];
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bands = bufferFactory.getDrawableBands(); |
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this.windowExtent = new GridExtent( bufferFactory.getDataExtent(), |
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cellSize[0],
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cellSize[1]);
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rasterBuf = (RasterBuffer)bufferFactory.getRasterBuf(); |
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if(notInterp) {
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reader = new GridNotInterpolated(rasterBuf, layerExtent, windowExtent, bands);
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} else {
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if (windowExtent.fitsIn(layerExtent))
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reader = new GridNotInterpolated(rasterBuf, layerExtent, windowExtent, bands);
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else
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reader = new GridInterpolated(rasterBuf, layerExtent, windowExtent, bands);
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} |
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writer = new GridWriter(layerExtent, dataType, rasterBuf);
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init(bufferFactory); |
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} |
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/**
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* Crea un grid a partir de un BufferFactory. Se har? una petici?n del extent completo de la fuente.
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* bufferFactory tiene asociada una fuente de datos pero se ignorar? si tiene el buffer lleno. La instanciaci?n
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* de GridNotInterpolated har? que se haga la petici?n para cargar raster completo.
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* @param bufferFactory Fuente de datos
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* @param bands n?mero de bandas requeridas y orden de dibujado en el buffer
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*/
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public Grid(BufferFactory bufferFactory, int[] bands) |
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throws RasterBufferInvalidException{
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//La petici?n es del raster completo
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double cellSize[] = calcCellSize(bufferFactory.getDataSource(), bufferFactory.getSourceWidth(), |
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bufferFactory.getSourceHeight()); |
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windowExtent = layerExtent = new GridExtent(bufferFactory.getDataSource().getExtent(),
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cellSize[0],
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cellSize[1]);
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if(bufferFactory.getDataSource() != null && bufferFactory.getDataSource().getDataType() != null) |
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dataType = bufferFactory.getDataSource().getDataType()[0];
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this.bands = bands;
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reader = new GridNotInterpolated(bufferFactory, layerExtent, windowExtent, bands);
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rasterBuf = (RasterBuffer)bufferFactory.getRasterBuf(); |
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writer = new GridWriter(windowExtent, dataType, rasterBuf);
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init(bufferFactory); |
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} |
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/**
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* Crea un grid a partir de un BufferFactory. Se har? una petici?n del extent completo de la fuente.
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* bufferFactory tiene asociada una fuente de datos pero se ignorar? si tiene el buffer lleno. La instanciaci?n
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* de GridNotInterpolated har? que se haga la petici?n para cargar raster completo. El buffer se cargar?
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* con todas las bandas disponibles.
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* @param bufferFactory Fuente de datos
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*/
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public Grid(BufferFactory bufferFactory) throws RasterBufferInvalidException { |
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//La petici?n es del raster completo
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double cellSize[] = calcCellSize(bufferFactory.getDataSource(), bufferFactory.getSourceWidth(), |
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bufferFactory.getSourceHeight()); |
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windowExtent = layerExtent = new GridExtent(bufferFactory.getDataSource().getExtent(),
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cellSize[0],
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cellSize[1]);
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if(bufferFactory.getDataSource() != null && bufferFactory.getDataSource().getDataType() != null) |
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dataType = bufferFactory.getDataSource().getDataType()[0];
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bands = new int[bufferFactory.getBandCount()]; |
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for(int i = 0; i < bufferFactory.getBandCount(); i ++) |
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bands[i] = i; |
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reader = new GridNotInterpolated(bufferFactory, layerExtent, windowExtent, bands);
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rasterBuf = (RasterBuffer)bufferFactory.getRasterBuf(); |
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writer = new GridWriter(windowExtent, dataType, rasterBuf);
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init(bufferFactory); |
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} |
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/**
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* Calcula el tama?o de celda a partir de un dataset, un ancho y un alto en pixeles
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* @return
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*/
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private double[] calcCellSize(IRasterDataSource mDataset, double w, double h) { |
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double dCellsize[] = new double[2]; |
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try {
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Extent e = mDataset.getExtent(); |
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dCellsize[0] = (e.getLRX() - e.getULX()) / w;
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dCellsize[1] = (e.getLRY() - e.getULY()) / h;
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return dCellsize;
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} catch (NullPointerException e) { |
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dCellsize[0] = 1; |
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dCellsize[1] = 1; |
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return dCellsize;
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} |
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} |
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/**
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* Selecciona la forma de obtener datos con o sin interpolaci?n. Si pasamos el par?metro
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* false al aplicar un m?todo de consulta de datos este ser? aplicado sin interpolaci?n.
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* @param interpolation
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*/
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public void switchToInterpolationMethod(boolean interpolation){ |
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//GridExtent layer = new GridExtent(0, 0, rasterBuf.getWidth(), rasterBuf.getHeight(), 1);
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if(interpolation)
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reader = new GridInterpolated(rasterBuf, layerExtent, windowExtent, bands);
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else
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reader = new GridNotInterpolated(rasterBuf, layerExtent, windowExtent, bands);
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init(null);
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} |
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/**
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* Inicializaci?n de constantes
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*/
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private void init(BufferFactory ds) { |
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int i;
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GridTransparency transparency = null;
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double dCellSize = getCellSize();
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statistic = new GridStatistic(this); |
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if (ds == null) |
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transparency = new GridTransparency();
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else {
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Transparency transp = ds.getDataSource().getTransparencyFilesStatus();
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if (transp != null) |
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transparency = new GridTransparency(transp);
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this.palette = new GridPalette[ds.getColorTables().length]; |
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for (int iPal = 0; iPal < ds.getColorTables().length; iPal++) { |
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if (ds.getColorTables()[iPal] != null) |
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this.palette[iPal] = new GridPalette(ds.getColorTables()[iPal]); |
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} |
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} |
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filterList = new RasterFilterList();
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if (ds != null) { |
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filterList.addEnvParam("IStatistics", ds.getDataSource().getStatistics());
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filterList.addEnvParam("MultiRasterDataset", ds.getDataSource());
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} |
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filterList.addEnvParam("Transparency", transparency);
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if(rasterBuf != null) |
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filterList.setInitRasterBuf(rasterBuf); |
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m_dDist = new double[8]; |
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for (i = 0; i < 8; i++) { |
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m_dDist[i] = Math.sqrt ( m_iOffsetX[i] * dCellSize * m_iOffsetX[i] * dCellSize
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+ m_iOffsetY[i] * dCellSize * m_iOffsetY[i] * dCellSize ); |
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} |
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_2DX = dCellSize * 2.0;
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_6DX = dCellSize * 6.0;
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_DX_2 = dCellSize * dCellSize; |
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_4DX_2 = 4.0 * _DX_2;
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} |
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//************* Write Services *********************
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.grid.IWritableGrid#assign(byte)
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*/
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public void assign(byte value)throws GridException { |
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try {
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writer.assign(value); |
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} catch (RasterBufferInvalidAccessException e) {
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throw new GridException("Error wrinting buffer"); |
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} |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.grid.IWritableGrid#assign(short)
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*/
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public void assign(short value)throws GridException { |
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try {
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writer.assign(value); |
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} catch (RasterBufferInvalidAccessException e) {
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throw new GridException("Error wrinting buffer"); |
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} |
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} |
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/*
|
| 393 |
* (non-Javadoc)
|
| 394 |
* @see org.gvsig.fmap.grid.IWritableGrid#assign(int)
|
| 395 |
*/
|
| 396 |
public void assign(int value)throws GridException { |
| 397 |
try {
|
| 398 |
writer.assign(value); |
| 399 |
} catch (RasterBufferInvalidAccessException e) {
|
| 400 |
throw new GridException("Error wrinting buffer"); |
| 401 |
} |
| 402 |
} |
| 403 |
|
| 404 |
/*
|
| 405 |
* (non-Javadoc)
|
| 406 |
* @see org.gvsig.fmap.grid.IWritableGrid#assign(float)
|
| 407 |
*/
|
| 408 |
public void assign(float value)throws GridException { |
| 409 |
try {
|
| 410 |
writer.assign(value); |
| 411 |
} catch (RasterBufferInvalidAccessException e) {
|
| 412 |
throw new GridException("Error wrinting buffer"); |
| 413 |
} |
| 414 |
} |
| 415 |
|
| 416 |
/*
|
| 417 |
* (non-Javadoc)
|
| 418 |
* @see org.gvsig.fmap.grid.IWritableGrid#assign(double)
|
| 419 |
*/
|
| 420 |
public void assign(double value)throws GridException { |
| 421 |
try {
|
| 422 |
writer.assign(value); |
| 423 |
} catch (RasterBufferInvalidAccessException e) {
|
| 424 |
throw new GridException("Error wrinting buffer"); |
| 425 |
} |
| 426 |
} |
| 427 |
|
| 428 |
/*
|
| 429 |
* (non-Javadoc)
|
| 430 |
* @see org.gvsig.fmap.grid.IWritableGrid#assign(org.gvsig.fmap.dataaccess.BufferFactory)
|
| 431 |
*/
|
| 432 |
public void assign(BufferFactory bufferFactory) throws GridException { |
| 433 |
Grid window; |
| 434 |
try {
|
| 435 |
window = new Grid(bufferFactory.getDataSource(), bands, windowExtent);
|
| 436 |
write(window); |
| 437 |
writer.setNoDataValue(window.getNoDataValue()); |
| 438 |
} catch (RasterBufferInvalidException e) {
|
| 439 |
throw new GridException("Error writing buffer"); |
| 440 |
} |
| 441 |
} |
| 442 |
|
| 443 |
/*
|
| 444 |
* (non-Javadoc)
|
| 445 |
* @see org.gvsig.fmap.grid.IWritableGrid#assign(org.gvsig.fmap.grid.Grid)
|
| 446 |
*/
|
| 447 |
public void assign(Grid driver) throws GridException { |
| 448 |
if (driver.getGridExtent().equals(layerExtent)){
|
| 449 |
write(driver); |
| 450 |
writer.setNoDataValue(driver.getNoDataValue()); |
| 451 |
} |
| 452 |
} |
| 453 |
|
| 454 |
/**
|
| 455 |
* Sobreescribe los datos del grid actual con los datos del grid pasado por par?metro
|
| 456 |
* @param g Grid desde donde se obtienen los datos
|
| 457 |
*/
|
| 458 |
private void write(Grid g) throws GridException { |
| 459 |
try{
|
| 460 |
switch(rasterBuf.getDataType()){
|
| 461 |
case IBuffer.TYPE_BYTE: for (int x = 0; x < g.getNX(); x++) { |
| 462 |
for (int y = 0; y < g.getNY(); y++) { |
| 463 |
writer.setCellValue(x, y, g.getCellValueAsByte(x, y)); |
| 464 |
} |
| 465 |
} |
| 466 |
break;
|
| 467 |
case IBuffer.TYPE_SHORT:for (int x = 0; x < g.getNX(); x++) { |
| 468 |
for (int y = 0; y < g.getNY(); y++) { |
| 469 |
writer.setCellValue(x, y, g.getCellValueAsShort(x, y)); |
| 470 |
} |
| 471 |
} |
| 472 |
break;
|
| 473 |
case IBuffer.TYPE_INT: for (int x = 0; x < g.getNX(); x++) { |
| 474 |
for (int y = 0; y < g.getNY(); y++) { |
| 475 |
writer.setCellValue(x, y, g.getCellValueAsInt(x, y)); |
| 476 |
} |
| 477 |
} |
| 478 |
break;
|
| 479 |
case IBuffer.TYPE_FLOAT:for (int x = 0; x < g.getNX(); x++) { |
| 480 |
for (int y = 0; y < g.getNY(); y++) { |
| 481 |
writer.setCellValue(x, y, g.getCellValueAsFloat(x, y)); |
| 482 |
} |
| 483 |
} |
| 484 |
break;
|
| 485 |
case IBuffer.TYPE_DOUBLE:for (int x = 0; x < g.getNX(); x++) { |
| 486 |
for (int y = 0; y < g.getNY(); y++) { |
| 487 |
writer.setCellValue(x, y, g.getCellValueAsDouble(x, y)); |
| 488 |
} |
| 489 |
} |
| 490 |
break;
|
| 491 |
} |
| 492 |
} catch (OutOfGridException e) {
|
| 493 |
throw new GridException(""); |
| 494 |
} |
| 495 |
} |
| 496 |
|
| 497 |
/*
|
| 498 |
* (non-Javadoc)
|
| 499 |
* @see org.gvsig.fmap.grid.IWritableGrid#assignNoData()
|
| 500 |
*/
|
| 501 |
public void assignNoData(){ |
| 502 |
try {
|
| 503 |
switch(rasterBuf.getDataType()){
|
| 504 |
case IBuffer.TYPE_BYTE: writer.assign((byte)rasterBuf.getNoDataValue());break; |
| 505 |
case IBuffer.TYPE_SHORT: writer.assign((short)rasterBuf.getNoDataValue());break; |
| 506 |
case IBuffer.TYPE_INT: writer.assign((int)rasterBuf.getNoDataValue());break; |
| 507 |
case IBuffer.TYPE_FLOAT: writer.assign((float)rasterBuf.getNoDataValue());break; |
| 508 |
case IBuffer.TYPE_DOUBLE: writer.assign((double)rasterBuf.getNoDataValue());break; |
| 509 |
} |
| 510 |
} catch (RasterBufferInvalidAccessException e) {
|
| 511 |
//No hacemos nada. El tipo de dato al que se accede no es controlado por el usuario por lo
|
| 512 |
//que no le mandamos la excepci?n hacia arriba.
|
| 513 |
e.printStackTrace(); |
| 514 |
} |
| 515 |
} |
| 516 |
|
| 517 |
/*
|
| 518 |
* (non-Javadoc)
|
| 519 |
* @see org.gvsig.fmap.grid.IWritableGrid#setCellValue(int, int, byte)
|
| 520 |
*/
|
| 521 |
public void setCellValue(int x, int y, byte value)throws OutOfGridException{ |
| 522 |
writer.setCellValue(x, y, value); |
| 523 |
} |
| 524 |
|
| 525 |
/*
|
| 526 |
* (non-Javadoc)
|
| 527 |
* @see org.gvsig.fmap.grid.IWritableGrid#setCellValue(int, int, short)
|
| 528 |
*/
|
| 529 |
public void setCellValue(int x, int y, short value)throws OutOfGridException{ |
| 530 |
writer.setCellValue(x, y, value); |
| 531 |
} |
| 532 |
|
| 533 |
/*
|
| 534 |
* (non-Javadoc)
|
| 535 |
* @see org.gvsig.fmap.grid.IWritableGrid#setCellValue(int, int, int)
|
| 536 |
*/
|
| 537 |
public void setCellValue(int x, int y, int value)throws OutOfGridException{ |
| 538 |
writer.setCellValue(x, y, value); |
| 539 |
} |
| 540 |
|
| 541 |
/*
|
| 542 |
* (non-Javadoc)
|
| 543 |
* @see org.gvsig.fmap.grid.IWritableGrid#setCellValue(int, int, float)
|
| 544 |
*/
|
| 545 |
public void setCellValue(int x, int y, float value)throws OutOfGridException{ |
| 546 |
writer.setCellValue(x, y, value); |
| 547 |
} |
| 548 |
|
| 549 |
/*
|
| 550 |
* (non-Javadoc)
|
| 551 |
* @see org.gvsig.fmap.grid.IWritableGrid#setCellValue(int, int, double)
|
| 552 |
*/
|
| 553 |
public void setCellValue(int x, int y, double value)throws OutOfGridException{ |
| 554 |
writer.setCellValue(x, y, value); |
| 555 |
} |
| 556 |
|
| 557 |
/*
|
| 558 |
* (non-Javadoc)
|
| 559 |
* @see org.gvsig.fmap.grid.IWritableGrid#add(org.gvsig.fmap.grid.Grid)
|
| 560 |
*/
|
| 561 |
public void add(Grid g) throws GridException { |
| 562 |
if (g.getGridExtent().equals(getGridExtent())) {
|
| 563 |
boolean interp = (reader instanceof GridInterpolated); |
| 564 |
switchToInterpolationMethod(false);
|
| 565 |
try{
|
| 566 |
switch(rasterBuf.getDataType()){
|
| 567 |
case IBuffer.TYPE_BYTE: for (int x = 0; x < g.getNX(); x++) { |
| 568 |
for (int y = 0; y < g.getNY(); y++) { |
| 569 |
writer.setCellValue(x, y, reader.getCellValueAsByte(x, y) + g.getCellValueAsByte(x,y)); |
| 570 |
} |
| 571 |
} |
| 572 |
break;
|
| 573 |
case IBuffer.TYPE_SHORT:for (int x = 0; x < g.getNX(); x++) { |
| 574 |
for (int y = 0; y < g.getNY(); y++) { |
| 575 |
writer.setCellValue(x, y, reader.getCellValueAsShort(x, y) + g.getCellValueAsShort(x,y)); |
| 576 |
} |
| 577 |
} |
| 578 |
break;
|
| 579 |
case IBuffer.TYPE_INT: for (int x = 0; x < g.getNX(); x++) { |
| 580 |
for (int y = 0; y < g.getNY(); y++) { |
| 581 |
writer.setCellValue(x, y, reader.getCellValueAsInt(x, y) + g.getCellValueAsInt(x,y)); |
| 582 |
} |
| 583 |
} |
| 584 |
break;
|
| 585 |
case IBuffer.TYPE_FLOAT:for (int x = 0; x < g.getNX(); x++) { |
| 586 |
for (int y = 0; y < g.getNY(); y++) { |
| 587 |
writer.setCellValue(x, y, reader.getCellValueAsFloat(x, y) + g.getCellValueAsFloat(x,y)); |
| 588 |
} |
| 589 |
} |
| 590 |
break;
|
| 591 |
case IBuffer.TYPE_DOUBLE:for (int x = 0; x < g.getNX(); x++) { |
| 592 |
for (int y = 0; y < g.getNY(); y++) { |
| 593 |
writer.setCellValue(x, y, reader.getCellValueAsDouble(x, y) + g.getCellValueAsDouble(x,y)); |
| 594 |
} |
| 595 |
} |
| 596 |
break;
|
| 597 |
} |
| 598 |
} catch (OutOfGridException e) {
|
| 599 |
throw new GridException(""); |
| 600 |
} catch (RasterBufferInvalidAccessException e1) {
|
| 601 |
throw new GridException(""); |
| 602 |
} catch (RasterBufferInvalidException e) {
|
| 603 |
throw new GridException(""); |
| 604 |
} |
| 605 |
switchToInterpolationMethod(interp); |
| 606 |
} |
| 607 |
} |
| 608 |
|
| 609 |
/*
|
| 610 |
* (non-Javadoc)
|
| 611 |
* @see org.gvsig.fmap.grid.IWritableGrid#addToCellValue(int, int, byte)
|
| 612 |
*/
|
| 613 |
public void addToCellValue(int x, int y, byte value) |
| 614 |
throws GridException {
|
| 615 |
try {
|
| 616 |
writer.setCellValue(x, y, (byte)(reader.getCellValueAsByte(x, y) + value));
|
| 617 |
} catch (OutOfGridException e) {
|
| 618 |
throw new GridException(""); |
| 619 |
} catch (RasterBufferInvalidAccessException e) {
|
| 620 |
throw new GridException(""); |
| 621 |
} catch (RasterBufferInvalidException e) {
|
| 622 |
throw new GridException(""); |
| 623 |
} |
| 624 |
} |
| 625 |
|
| 626 |
/*
|
| 627 |
* (non-Javadoc)
|
| 628 |
* @see org.gvsig.fmap.grid.IWritableGrid#addToCellValue(int, int, short)
|
| 629 |
*/
|
| 630 |
public void addToCellValue(int x, int y, short value) |
| 631 |
throws GridException {
|
| 632 |
try {
|
| 633 |
writer.setCellValue(x, y, (short)(reader.getCellValueAsShort(x, y) + value));
|
| 634 |
} catch (OutOfGridException e) {
|
| 635 |
throw new GridException(""); |
| 636 |
} catch (RasterBufferInvalidAccessException e) {
|
| 637 |
throw new GridException(""); |
| 638 |
} catch (RasterBufferInvalidException e) {
|
| 639 |
throw new GridException(""); |
| 640 |
} |
| 641 |
} |
| 642 |
|
| 643 |
/*
|
| 644 |
* (non-Javadoc)
|
| 645 |
* @see org.gvsig.fmap.grid.IWritableGrid#addToCellValue(int, int, int)
|
| 646 |
*/
|
| 647 |
public void addToCellValue(int x, int y, int value) |
| 648 |
throws GridException {
|
| 649 |
try {
|
| 650 |
writer.setCellValue(x, y, (int)(reader.getCellValueAsInt(x, y) + value));
|
| 651 |
} catch (OutOfGridException e) {
|
| 652 |
throw new GridException(""); |
| 653 |
} catch (RasterBufferInvalidAccessException e) {
|
| 654 |
throw new GridException(""); |
| 655 |
} catch (RasterBufferInvalidException e) {
|
| 656 |
throw new GridException(""); |
| 657 |
} |
| 658 |
} |
| 659 |
|
| 660 |
/*
|
| 661 |
* (non-Javadoc)
|
| 662 |
* @see org.gvsig.fmap.grid.IWritableGrid#addToCellValue(int, int, float)
|
| 663 |
*/
|
| 664 |
public void addToCellValue(int x, int y, float value) |
| 665 |
throws GridException {
|
| 666 |
try {
|
| 667 |
writer.setCellValue(x, y, (float)(reader.getCellValueAsFloat(x, y) + value));
|
| 668 |
} catch (OutOfGridException e) {
|
| 669 |
throw new GridException(""); |
| 670 |
} catch (RasterBufferInvalidAccessException e) {
|
| 671 |
throw new GridException(""); |
| 672 |
} catch (RasterBufferInvalidException e) {
|
| 673 |
throw new GridException(""); |
| 674 |
} |
| 675 |
} |
| 676 |
|
| 677 |
/*
|
| 678 |
* (non-Javadoc)
|
| 679 |
* @see org.gvsig.fmap.grid.IWritableGrid#addToCellValue(int, int, double)
|
| 680 |
*/
|
| 681 |
public void addToCellValue(int x, int y, double value) |
| 682 |
throws GridException {
|
| 683 |
try {
|
| 684 |
writer.setCellValue(x, y, (double)(reader.getCellValueAsDouble(x, y) + value));
|
| 685 |
} catch (OutOfGridException e) {
|
| 686 |
throw new GridException(""); |
| 687 |
} catch (RasterBufferInvalidAccessException e) {
|
| 688 |
throw new GridException(""); |
| 689 |
} catch (RasterBufferInvalidException e) {
|
| 690 |
throw new GridException(""); |
| 691 |
} |
| 692 |
} |
| 693 |
|
| 694 |
/*
|
| 695 |
* (non-Javadoc)
|
| 696 |
* @see org.gvsig.fmap.grid.IWritableGrid#multiply(double)
|
| 697 |
*/
|
| 698 |
public void multiply(double value) throws GridException { |
| 699 |
boolean interp = (reader instanceof GridInterpolated); |
| 700 |
switchToInterpolationMethod(false);
|
| 701 |
try{
|
| 702 |
switch(rasterBuf.getDataType()){
|
| 703 |
case IBuffer.TYPE_BYTE: for (int x = 0; x < getNX(); x++){ |
| 704 |
for (int y = 0; y < getNY(); y++) |
| 705 |
writer.setCellValue(x, y, (byte)(reader.getCellValueAsByte(x, y) * value));
|
| 706 |
} |
| 707 |
break;
|
| 708 |
case IBuffer.TYPE_SHORT:for (int x = 0; x < getNX(); x++){ |
| 709 |
for (int y = 0; y < getNY(); y++) |
| 710 |
writer.setCellValue(x, y, (short)(reader.getCellValueAsShort(x, y) * value));
|
| 711 |
} |
| 712 |
break;
|
| 713 |
case IBuffer.TYPE_INT: for (int x = 0; x < getNX(); x++){ |
| 714 |
for (int y = 0; y < getNY(); y++) |
| 715 |
writer.setCellValue(x, y, (int)(reader.getCellValueAsInt(x, y) * value));
|
| 716 |
} |
| 717 |
break;
|
| 718 |
case IBuffer.TYPE_FLOAT:for (int x = 0; x < getNX(); x++){ |
| 719 |
for (int y = 0; y < getNY(); y++) |
| 720 |
writer.setCellValue(x, y, (float)(reader.getCellValueAsFloat(x, y) * value));
|
| 721 |
} |
| 722 |
break;
|
| 723 |
case IBuffer.TYPE_DOUBLE:for (int x = 0; x < getNX(); x++){ |
| 724 |
for (int y = 0; y < getNY(); y++) |
| 725 |
writer.setCellValue(x, y, (double)(reader.getCellValueAsDouble(x, y) * value));
|
| 726 |
} |
| 727 |
break;
|
| 728 |
} |
| 729 |
} catch (RasterBufferInvalidException e) {
|
| 730 |
throw new GridException("Buffer de datos no v?lido", e); |
| 731 |
} catch (OutOfGridException e1) {
|
| 732 |
throw new GridException("Acceso fuera de los l?mites del Grid", e1); |
| 733 |
} catch (RasterBufferInvalidAccessException e) {
|
| 734 |
throw new GridException("Acceso al grid no v?lido", e); |
| 735 |
} |
| 736 |
//Restauramos el reader que hab?a
|
| 737 |
switchToInterpolationMethod(interp); |
| 738 |
} |
| 739 |
|
| 740 |
/*
|
| 741 |
* (non-Javadoc)
|
| 742 |
* @see org.gvsig.fmap.grid.IWritableGrid#setNoDataValue(double)
|
| 743 |
*/
|
| 744 |
public void setNoDataValue(double dNoDataValue){ |
| 745 |
writer.setNoDataValue((float) dNoDataValue);
|
| 746 |
} |
| 747 |
|
| 748 |
/*
|
| 749 |
* (non-Javadoc)
|
| 750 |
* @see org.gvsig.fmap.grid.IWritableGrid#setNoData(int, int)
|
| 751 |
*/
|
| 752 |
public void setNoData(int x, int y){ |
| 753 |
writer.setNoData(x,y); |
| 754 |
} |
| 755 |
|
| 756 |
public void ExportToArcViewASCIIFile(String sFilename){ |
| 757 |
try {
|
| 758 |
writer.ExportToArcViewASCIIFile(sFilename); |
| 759 |
} catch (NumberFormatException e) { |
| 760 |
e.printStackTrace(); |
| 761 |
} catch (IOException e) { |
| 762 |
e.printStackTrace(); |
| 763 |
} |
| 764 |
} |
| 765 |
|
| 766 |
//************* Query Services *********************
|
| 767 |
|
| 768 |
/*
|
| 769 |
* (non-Javadoc)
|
| 770 |
* @see org.gvsig.fmap.grid.IQueryableGrid#isNoDataValue(double)
|
| 771 |
*/
|
| 772 |
public boolean isNoDataValue(double noDataValue){ |
| 773 |
return (reader.getNoDataValue() == noDataValue);
|
| 774 |
} |
| 775 |
|
| 776 |
/*
|
| 777 |
* (non-Javadoc)
|
| 778 |
* @see org.gvsig.fmap.grid.IQueryableGrid#isInGrid(int, int)
|
| 779 |
*/
|
| 780 |
public boolean isInGrid(int x, int y){ |
| 781 |
return reader.isCellInGrid(x, y);
|
| 782 |
} |
| 783 |
|
| 784 |
/*
|
| 785 |
* (non-Javadoc)
|
| 786 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getCellSize()
|
| 787 |
*/
|
| 788 |
public double getCellSize() { |
| 789 |
return reader.getCellSize();
|
| 790 |
} |
| 791 |
|
| 792 |
/*
|
| 793 |
* (non-Javadoc)
|
| 794 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getCellValueAsByte(int, int)
|
| 795 |
*/
|
| 796 |
public byte getCellValueAsByte(int x, int y)throws GridException { |
| 797 |
try {
|
| 798 |
return reader.getCellValueAsByte(x, y);
|
| 799 |
} catch (RasterBufferInvalidAccessException e) {
|
| 800 |
throw new GridException("Position: (" + x + "," + y + ") not valid"); |
| 801 |
} catch (RasterBufferInvalidException e) {
|
| 802 |
throw new GridException("Buffer not valid"); |
| 803 |
} |
| 804 |
} |
| 805 |
|
| 806 |
/*
|
| 807 |
* (non-Javadoc)
|
| 808 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getCellValueAsShort(int, int)
|
| 809 |
*/
|
| 810 |
public short getCellValueAsShort(int x, int y)throws GridException { |
| 811 |
try {
|
| 812 |
return (short) reader.getCellValueAsShort(x, y); |
| 813 |
} catch (RasterBufferInvalidAccessException e) {
|
| 814 |
throw new GridException("Position: (" + x + "," + y + ") not valid"); |
| 815 |
} catch (RasterBufferInvalidException e) {
|
| 816 |
throw new GridException("Buffer not valid"); |
| 817 |
} |
| 818 |
} |
| 819 |
|
| 820 |
/*
|
| 821 |
* (non-Javadoc)
|
| 822 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getCellValueAsInt(int, int)
|
| 823 |
*/
|
| 824 |
public int getCellValueAsInt(int x, int y)throws GridException { |
| 825 |
try {
|
| 826 |
return (int) reader.getCellValueAsInt(x, y); |
| 827 |
} catch (RasterBufferInvalidAccessException e) {
|
| 828 |
throw new GridException("Position: (" + x + "," + y + ") not valid"); |
| 829 |
} catch (RasterBufferInvalidException e) {
|
| 830 |
throw new GridException("Buffer not valid"); |
| 831 |
} |
| 832 |
} |
| 833 |
|
| 834 |
/*
|
| 835 |
* (non-Javadoc)
|
| 836 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getCellValueAsFloat(int, int)
|
| 837 |
*/
|
| 838 |
public float getCellValueAsFloat(int x, int y)throws GridException { |
| 839 |
try {
|
| 840 |
return reader.getCellValueAsFloat(x, y);
|
| 841 |
} catch (RasterBufferInvalidAccessException e) {
|
| 842 |
throw new GridException("Position: (" + x + "," + y + ") not valid"); |
| 843 |
} catch (RasterBufferInvalidException e) {
|
| 844 |
throw new GridException("Buffer not valid"); |
| 845 |
} |
| 846 |
} |
| 847 |
|
| 848 |
/*
|
| 849 |
* (non-Javadoc)
|
| 850 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getCellValueAsDouble(int, int)
|
| 851 |
*/
|
| 852 |
public double getCellValueAsDouble(int x, int y)throws GridException { |
| 853 |
try {
|
| 854 |
return (double) reader.getCellValueAsDouble(x, y); |
| 855 |
} catch (RasterBufferInvalidAccessException e) {
|
| 856 |
throw new GridException("Position: (" + x + "," + y + ") not valid"); |
| 857 |
} catch (RasterBufferInvalidException e) {
|
| 858 |
throw new GridException("Buffer not valid"); |
| 859 |
} |
| 860 |
} |
| 861 |
|
| 862 |
/*
|
| 863 |
* (non-Javadoc)
|
| 864 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getCellValueAsDouble(int, int)
|
| 865 |
*/
|
| 866 |
public double getCellValue(int x, int y)throws GridException { |
| 867 |
try {
|
| 868 |
return (double) reader.getCellValue(x, y); |
| 869 |
} catch (RasterBufferInvalidAccessException e) {
|
| 870 |
throw new GridException("Position: (" + x + "," + y + ") not valid"); |
| 871 |
} catch (RasterBufferInvalidException e) {
|
| 872 |
throw new GridException("Buffer not valid"); |
| 873 |
} |
| 874 |
} |
| 875 |
|
| 876 |
/*
|
| 877 |
* (non-Javadoc)
|
| 878 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getNoDataValue()
|
| 879 |
*/
|
| 880 |
public double getNoDataValue() { |
| 881 |
return (double) rasterBuf.getNoDataValue(); |
| 882 |
} |
| 883 |
|
| 884 |
/*
|
| 885 |
* (non-Javadoc)
|
| 886 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getMinValue()
|
| 887 |
*/
|
| 888 |
public double getMinValue() throws GridException { |
| 889 |
if (!statistic.isStatisticsCalculated())
|
| 890 |
statistic.calculateStatistics(); |
| 891 |
return statistic.getMin();
|
| 892 |
} |
| 893 |
|
| 894 |
/*
|
| 895 |
* (non-Javadoc)
|
| 896 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getMaxValue()
|
| 897 |
*/
|
| 898 |
public double getMaxValue() throws GridException { |
| 899 |
if (!statistic.isStatisticsCalculated())
|
| 900 |
statistic.calculateStatistics(); |
| 901 |
return statistic.getMax();
|
| 902 |
} |
| 903 |
|
| 904 |
/*
|
| 905 |
* (non-Javadoc)
|
| 906 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getMeanValue()
|
| 907 |
*/
|
| 908 |
public double getMeanValue() throws GridException { |
| 909 |
if (!statistic.isStatisticsCalculated())
|
| 910 |
statistic.calculateStatistics(); |
| 911 |
return statistic.getMean();
|
| 912 |
} |
| 913 |
|
| 914 |
/*
|
| 915 |
* (non-Javadoc)
|
| 916 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getVariance()
|
| 917 |
*/
|
| 918 |
public double getVariance() throws GridException { |
| 919 |
if (!statistic.isStatisticsCalculated())
|
| 920 |
statistic.calculateStatistics(); |
| 921 |
return statistic.getVariance();
|
| 922 |
} |
| 923 |
|
| 924 |
/*
|
| 925 |
* (non-Javadoc)
|
| 926 |
* @see org.gvsig.fmap.grid.IQueryableGrid#setInterpolationMethod(int)
|
| 927 |
*/
|
| 928 |
public void setInterpolationMethod(int iMethod){ |
| 929 |
if (reader instanceof GridInterpolated) |
| 930 |
((GridInterpolated) reader).setInterpolationMethod(iMethod); |
| 931 |
else{
|
| 932 |
this.switchToInterpolationMethod(true); |
| 933 |
((GridInterpolated) reader).setInterpolationMethod(iMethod); |
| 934 |
} |
| 935 |
} |
| 936 |
|
| 937 |
/*
|
| 938 |
* (non-Javadoc)
|
| 939 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getNX()
|
| 940 |
*/
|
| 941 |
public int getNX(){ |
| 942 |
return reader.getNX();
|
| 943 |
} |
| 944 |
|
| 945 |
/*
|
| 946 |
* (non-Javadoc)
|
| 947 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getNY()
|
| 948 |
*/
|
| 949 |
public int getNY(){ |
| 950 |
return reader.getNY();
|
| 951 |
} |
| 952 |
|
| 953 |
/*
|
| 954 |
* (non-Javadoc)
|
| 955 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getLayerNX()
|
| 956 |
*/
|
| 957 |
public int getLayerNX(){ |
| 958 |
return layerExtent.getNX();
|
| 959 |
} |
| 960 |
|
| 961 |
/*
|
| 962 |
* (non-Javadoc)
|
| 963 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getLayerNY()
|
| 964 |
*/
|
| 965 |
public int getLayerNY(){ |
| 966 |
return layerExtent.getNY();
|
| 967 |
} |
| 968 |
|
| 969 |
public int getDataType(){ |
| 970 |
return dataType;
|
| 971 |
} |
| 972 |
|
| 973 |
private boolean getSubMatrix3x3(int x, int y, double subMatrix[]) |
| 974 |
throws GridException {
|
| 975 |
int i;
|
| 976 |
int iDir;
|
| 977 |
double z, z2;
|
| 978 |
|
| 979 |
z = getCellValueAsDouble(x, y); |
| 980 |
|
| 981 |
if(isNoDataValue(z)) {
|
| 982 |
return false; |
| 983 |
} else {
|
| 984 |
//SubMatrix[4] = 0.0;
|
| 985 |
for(i = 0; i < 4; i++) { |
| 986 |
iDir = 2 * i;
|
| 987 |
z2 = getCellValueAsDouble(x + m_iOffsetX[iDir], y + m_iOffsetY[iDir]); |
| 988 |
if( !isNoDataValue(z2)){
|
| 989 |
subMatrix[i] = z2 - z; |
| 990 |
} else {
|
| 991 |
z2 = getCellValueAsDouble(x + m_iOffsetX[(iDir + 4) % 8], y + m_iOffsetY[(iDir + 4) % 8]); |
| 992 |
if( !isNoDataValue(z2)) {
|
| 993 |
subMatrix[i] = z - z2; |
| 994 |
} else {
|
| 995 |
subMatrix[i] = 0.0;
|
| 996 |
} |
| 997 |
} |
| 998 |
} |
| 999 |
|
| 1000 |
return true; |
| 1001 |
} |
| 1002 |
} |
| 1003 |
|
| 1004 |
/*
|
| 1005 |
* (non-Javadoc)
|
| 1006 |
* @see org.gvsig.raster.grid.IQueryableGrid#getSlope(int, int)
|
| 1007 |
*/
|
| 1008 |
public double getSlope(int x, int y)throws GridException { |
| 1009 |
double zm[], G, H; |
| 1010 |
|
| 1011 |
zm = new double[4]; |
| 1012 |
|
| 1013 |
try {
|
| 1014 |
if( getSubMatrix3x3(x, y, zm) ) {
|
| 1015 |
G = (zm[0] - zm[2]) / _2DX; |
| 1016 |
H = (zm[1] - zm[3]) / _2DX; |
| 1017 |
return Math.atan(Math.sqrt(G * G + H * H)); |
| 1018 |
} |
| 1019 |
else {
|
| 1020 |
return rasterBuf.getNoDataValue();
|
| 1021 |
} |
| 1022 |
} catch (GridException e) {
|
| 1023 |
throw new GridException("Problems accesing 3x3 submatrix"); |
| 1024 |
} |
| 1025 |
} |
| 1026 |
|
| 1027 |
/*
|
| 1028 |
* (non-Javadoc)
|
| 1029 |
* @see org.gvsig.raster.grid.IQueryableGrid#getAspect(int, int)
|
| 1030 |
*/
|
| 1031 |
public double getAspect(int x, int y)throws GridException { |
| 1032 |
double zm[], G, H, dAspect; |
| 1033 |
zm = new double[4]; |
| 1034 |
|
| 1035 |
try {
|
| 1036 |
if( getSubMatrix3x3(x, y, zm) ) {
|
| 1037 |
G = (zm[0] - zm[2]) / _2DX; |
| 1038 |
H = (zm[1] - zm[3]) / _2DX; |
| 1039 |
if(G != 0.0) |
| 1040 |
dAspect = DEG_180_IN_RAD + Math.atan2(H, G);
|
| 1041 |
else
|
| 1042 |
dAspect = H > 0.0 ? DEG_270_IN_RAD : (H < 0.0 ? DEG_90_IN_RAD : -1.0); |
| 1043 |
return dAspect;
|
| 1044 |
} |
| 1045 |
else
|
| 1046 |
return rasterBuf.getNoDataValue();
|
| 1047 |
} catch (GridException e) {
|
| 1048 |
throw new GridException("Problems accesing 3x3 submatrix"); |
| 1049 |
} |
| 1050 |
} |
| 1051 |
|
| 1052 |
public static int getXOffsetInDir(int iDir){ |
| 1053 |
return m_iOffsetX[iDir];
|
| 1054 |
} |
| 1055 |
|
| 1056 |
public static int getYOffsetInDir(int iDir){ |
| 1057 |
return m_iOffsetY[iDir];
|
| 1058 |
} |
| 1059 |
|
| 1060 |
public double getDistToNeighborInDir(int iDir){ |
| 1061 |
return m_dDist[iDir];
|
| 1062 |
} |
| 1063 |
|
| 1064 |
public static double getUnitDistToNeighborInDir(int iDir){ |
| 1065 |
return( (iDir % 2 != 0) ? Math.sqrt(2.0) : 1.0 ); |
| 1066 |
} |
| 1067 |
|
| 1068 |
/*
|
| 1069 |
* (non-Javadoc)
|
| 1070 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getDirToNextDownslopeCell(int, int)
|
| 1071 |
*/
|
| 1072 |
public int getDirToNextDownslopeCell(int x, int y)throws GridException{ |
| 1073 |
return getDirToNextDownslopeCell(x, y, true); |
| 1074 |
} |
| 1075 |
|
| 1076 |
/*
|
| 1077 |
* (non-Javadoc)
|
| 1078 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getDirToNextDownslopeCell(int, int, boolean)
|
| 1079 |
*/
|
| 1080 |
public int getDirToNextDownslopeCell(int x, int y, boolean bForceDirToNoDataCell) |
| 1081 |
throws GridException{
|
| 1082 |
|
| 1083 |
int i, iDir;
|
| 1084 |
double z, z2, dSlope, dMaxSlope;
|
| 1085 |
|
| 1086 |
z = getCellValueAsDouble(x, y); |
| 1087 |
|
| 1088 |
if(isNoDataValue(z)){
|
| 1089 |
return -1; |
| 1090 |
} |
| 1091 |
|
| 1092 |
dMaxSlope = 0.0;
|
| 1093 |
for(iDir=-1, i=0; i<8; i++) { |
| 1094 |
z2 = getCellValueAsDouble(x + m_iOffsetX[i], y + m_iOffsetY[i]); |
| 1095 |
if(isNoDataValue(z2)) {
|
| 1096 |
if (bForceDirToNoDataCell) {
|
| 1097 |
return i;
|
| 1098 |
} |
| 1099 |
else {
|
| 1100 |
return -1; |
| 1101 |
} |
| 1102 |
} |
| 1103 |
else {
|
| 1104 |
dSlope = (z - z2) / getDistToNeighborInDir(i); |
| 1105 |
if( dSlope > dMaxSlope ) {
|
| 1106 |
iDir = i; |
| 1107 |
dMaxSlope = dSlope; |
| 1108 |
} |
| 1109 |
} |
| 1110 |
} |
| 1111 |
return iDir;
|
| 1112 |
} |
| 1113 |
|
| 1114 |
public GridCell[] getSortedArrayOfCells()throws GridException{ |
| 1115 |
int i;
|
| 1116 |
int iX,iY;
|
| 1117 |
int iNX = getNX();
|
| 1118 |
int iCells = getNX() * getNY();
|
| 1119 |
GridCell [] cells = null; |
| 1120 |
GridCell cell = null;
|
| 1121 |
|
| 1122 |
cells = new GridCell[iCells];
|
| 1123 |
|
| 1124 |
for (i = 0; i < iCells; i++) { |
| 1125 |
iX = i % iNX; |
| 1126 |
iY = i / iNX; |
| 1127 |
switch(getDataType()){
|
| 1128 |
case IBuffer.TYPE_BYTE: cell = new GridCell(iX, iY, getCellValueAsByte(iX, iY)); break; |
| 1129 |
case IBuffer.TYPE_SHORT: cell = new GridCell(iX, iY, getCellValueAsShort(iX, iY)); break; |
| 1130 |
case IBuffer.TYPE_INT: cell = new GridCell(iX, iY, getCellValueAsInt(iX, iY)); break; |
| 1131 |
case IBuffer.TYPE_FLOAT: cell = new GridCell(iX, iY, getCellValueAsFloat(iX, iY)); break; |
| 1132 |
case IBuffer.TYPE_DOUBLE: cell = new GridCell(iX, iY, getCellValueAsDouble(iX, iY)); break; |
| 1133 |
} |
| 1134 |
|
| 1135 |
cells[i] = cell; |
| 1136 |
} |
| 1137 |
|
| 1138 |
Arrays.sort(cells);
|
| 1139 |
|
| 1140 |
return cells;
|
| 1141 |
} |
| 1142 |
|
| 1143 |
/**
|
| 1144 |
* Obtiene la paleta para el caso de un MDT. Esta funci?n evita el tener que obtener
|
| 1145 |
* un array de paletas y buscar en el cuando se trata de un caso simple de MDT de una
|
| 1146 |
* sola banda. Comprueba que se trata de un raster monobanda con paleta asociada antes
|
| 1147 |
* de devolverla.
|
| 1148 |
* @return GridPalette asociada al Grid
|
| 1149 |
*/
|
| 1150 |
public GridPalette getMDTPalette() {
|
| 1151 |
if( rasterBuf != null && |
| 1152 |
rasterBuf.getBandCount() == 1 &&
|
| 1153 |
palette != null)
|
| 1154 |
return palette[0]; |
| 1155 |
return null; |
| 1156 |
} |
| 1157 |
|
| 1158 |
/**
|
| 1159 |
* Obtiene la lista de paletas asociadas al grid
|
| 1160 |
* @return Lista de objetos GridPalette
|
| 1161 |
*/
|
| 1162 |
public GridPalette[] getPalettes() { |
| 1163 |
return palette;
|
| 1164 |
} |
| 1165 |
|
| 1166 |
/**
|
| 1167 |
* Obtiene el n?mero de bandas del grid o 0 si no tiene buffer de
|
| 1168 |
* datos asociado.
|
| 1169 |
* @return N?mero de bandas
|
| 1170 |
*/
|
| 1171 |
public int getBandCount() { |
| 1172 |
if(rasterBuf != null) |
| 1173 |
return rasterBuf.getBandCount();
|
| 1174 |
return 0; |
| 1175 |
} |
| 1176 |
|
| 1177 |
/**
|
| 1178 |
* Asigna la lista de paletas asociadas al grid
|
| 1179 |
* @param palette Lista de objetos GridPalette
|
| 1180 |
*/
|
| 1181 |
public void setPalettes(GridPalette[] palette) { |
| 1182 |
this.palette = palette;
|
| 1183 |
} |
| 1184 |
|
| 1185 |
/**
|
| 1186 |
* Obtiene la lista de filtros.
|
| 1187 |
* @return Lista de filtros.
|
| 1188 |
*/
|
| 1189 |
public RasterFilterList getFilterList(){
|
| 1190 |
return filterList;
|
| 1191 |
} |
| 1192 |
|
| 1193 |
/**
|
| 1194 |
* Asigna la lista de filtros
|
| 1195 |
* @param filterList
|
| 1196 |
*/
|
| 1197 |
public void setFilterList(RasterFilterList filterList) { |
| 1198 |
this.filterList = filterList;
|
| 1199 |
} |
| 1200 |
|
| 1201 |
/**
|
| 1202 |
*Aplica la lista de filtros sobre el buffer
|
| 1203 |
* @throws InterruptedException
|
| 1204 |
*/
|
| 1205 |
public void applyFilters() throws InterruptedException { |
| 1206 |
if (filterList == null) |
| 1207 |
return;
|
| 1208 |
|
| 1209 |
filterList.setInitRasterBuf(rasterBuf); |
| 1210 |
|
| 1211 |
filterList.getEnv().put("GridExtent", getGridExtent());
|
| 1212 |
filterList.getEnv().put("WindowExtent", getWindowExtent());
|
| 1213 |
|
| 1214 |
filterList.execute(); |
| 1215 |
rasterBuf = (RasterBuffer) filterList.getResult(); |
| 1216 |
dataType = rasterBuf.getDataType(); |
| 1217 |
} |
| 1218 |
|
| 1219 |
/**
|
| 1220 |
* Obtiene el buffer de datos del grid
|
| 1221 |
* @return RasterBuf
|
| 1222 |
*/
|
| 1223 |
public IBuffer getRasterBuf() {
|
| 1224 |
return rasterBuf;
|
| 1225 |
} |
| 1226 |
|
| 1227 |
/**
|
| 1228 |
* Asigna la banda sobre la que se realizan las operaciones. Por defecto es la banda 0
|
| 1229 |
* con lo que para el uso de MDTs no habr? que modificar este valor.
|
| 1230 |
* @param band Banda sobre la que se realizan las operaciones.
|
| 1231 |
*/
|
| 1232 |
public void setBandToOperate(int band) { |
| 1233 |
if(writer != null) |
| 1234 |
writer.setBandToOperate(band); |
| 1235 |
if(reader != null) |
| 1236 |
reader.setBandToOperate(band); |
| 1237 |
if(statistic != null) |
| 1238 |
statistic.setBandToOperate(band); |
| 1239 |
} |
| 1240 |
|
| 1241 |
/**
|
| 1242 |
* Obtiene el extent de la ventana seleccionada para petici?n de datos
|
| 1243 |
* @return GridExtent
|
| 1244 |
*/
|
| 1245 |
public GridExtent getWindowExtent() {
|
| 1246 |
return windowExtent;
|
| 1247 |
} |
| 1248 |
|
| 1249 |
/**
|
| 1250 |
* Obtiene el extent del grid para petici?n de datos
|
| 1251 |
* @return GridExtent
|
| 1252 |
*/
|
| 1253 |
public GridExtent getGridExtent() {
|
| 1254 |
return layerExtent;
|
| 1255 |
} |
| 1256 |
} |