gvsig-raster / org.gvsig.raster / tags / 2.0.0 / org.gvsig.raster.lib / org.gvsig.raster.lib.impl / src / main / java / org / gvsig / raster / impl / grid / GridWriter.java @ 1708
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/* gvSIG. Geographic Information System of the Valencian Government
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*
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* Copyright (C) 2007-2008 Infrastructures and Transports Department
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* of the Valencian Government (CIT)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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*/
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package org.gvsig.raster.impl.grid; |
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import org.gvsig.fmap.dal.coverage.RasterLibrary; |
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import org.gvsig.fmap.dal.coverage.dataset.Buffer; |
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import org.gvsig.fmap.dal.coverage.datastruct.GridExtent; |
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import org.gvsig.fmap.dal.coverage.datastruct.NoData; |
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import org.gvsig.fmap.dal.coverage.exception.OutOfGridException; |
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import org.gvsig.fmap.dal.coverage.exception.RasterBufferInvalidAccessException; |
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import org.gvsig.raster.impl.DefaultRasterManager; |
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/**
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* Esta clase representa un grid para escritura
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*
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* @author Nacho Brodin (nachobrodin@gmail.com)
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*/
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public class GridWriter{ |
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private Buffer rasterBuf = null; |
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private GridExtent extent = null; |
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private int dataType = Buffer.TYPE_UNDEFINED; |
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private int bandToOperate = 0; |
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/**
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* Asignaci?n del buffer de datos e inicializaci?n de variables.
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* @param ge Extent del grid
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* @param dataType Tipo de dato del grid
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* @param rasterBuf Buffer de datos del grid
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*/
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public GridWriter(GridExtent ge, int dataType, Buffer rasterBuf){ |
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this.rasterBuf = rasterBuf;
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this.extent = ge;
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} |
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/**
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* Creaci?n del escritor de grid a trav?s de los par?metros de su extent. Con
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* ellos se crear? el GridExtent y el buffer de datos para escribir.
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* @param iNX Ancho en pixeles
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* @param iNY Alto en pixeles
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* @param dCellSize Tama?o de celda
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* @param dMinX Coordenada m?nima en X
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* @param dMinY Coordenada m?nima en Y
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* @param dataType Tipo de dato
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* @param bands Bandas a escribir
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*/
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public GridWriter(int iNX, int iNY, double dCellSize, |
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double dMinX, double dMinY, int dataType, |
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int[] bands) { |
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extent = new GridExtentImpl();
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extent.setCellSize(dCellSize); |
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extent.setXRange(dMinX, dMinX + iNX * dCellSize); |
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extent.setYRange(dMinY, dMinY + iNY * dCellSize); |
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rasterBuf = DefaultRasterManager.getInstance().createBuffer(dataType, iNX, iNY, bands.length, true);
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} |
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public void assign(byte value) throws RasterBufferInvalidAccessException { |
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try{
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rasterBuf.assign(bandToOperate, value); |
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}catch(ArrayIndexOutOfBoundsException e){ |
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throw new RasterBufferInvalidAccessException("Access to data type " + dataType + "invalid"); |
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}catch(NullPointerException e){ |
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throw new RasterBufferInvalidAccessException("Access to data type " + dataType + "invalid"); |
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} |
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} |
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public void assign(short value) throws RasterBufferInvalidAccessException { |
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try{
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rasterBuf.assign(bandToOperate, value); |
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}catch(ArrayIndexOutOfBoundsException e){ |
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throw new RasterBufferInvalidAccessException("Access to data type " + dataType + "invalid"); |
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}catch(NullPointerException e){ |
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throw new RasterBufferInvalidAccessException("Access to data type " + dataType + "invalid"); |
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} |
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} |
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public void assign(int value) throws RasterBufferInvalidAccessException { |
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try{
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rasterBuf.assign(bandToOperate, value); |
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}catch(ArrayIndexOutOfBoundsException e){ |
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throw new RasterBufferInvalidAccessException("Access to data type " + dataType + "invalid"); |
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}catch(NullPointerException e){ |
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throw new RasterBufferInvalidAccessException("Access to data type " + dataType + "invalid"); |
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} |
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} |
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public void assign(float value) throws RasterBufferInvalidAccessException { |
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try{
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rasterBuf.assign(bandToOperate, value); |
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}catch(ArrayIndexOutOfBoundsException e){ |
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throw new RasterBufferInvalidAccessException("Access to data type " + dataType + "invalid"); |
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}catch(NullPointerException e){ |
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throw new RasterBufferInvalidAccessException("Access to data type " + dataType + "invalid"); |
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} |
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} |
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public void assign(double value) throws RasterBufferInvalidAccessException { |
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try{
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rasterBuf.assign(bandToOperate, value); |
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}catch(ArrayIndexOutOfBoundsException e){ |
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throw new RasterBufferInvalidAccessException("Access to data type " + dataType + "invalid"); |
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}catch(NullPointerException e){ |
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throw new RasterBufferInvalidAccessException("Access to data type " + dataType + "invalid"); |
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} |
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} |
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public GridExtent getGridExtent() {
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return extent;
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} |
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public void setCellValue( int iX, int iY, byte value) throws OutOfGridException { |
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if (isCellInGrid(iX, iY))
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rasterBuf.setElem(iY, iX, bandToOperate, value); |
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else
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throw new OutOfGridException("Point:(" + iX + "," + iY + ") out of grid."); |
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} |
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public void setCellValue( int iX, int iY, short value) throws OutOfGridException { |
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if (isCellInGrid(iX, iY))
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rasterBuf.setElem(iY, iX, bandToOperate, value); |
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else
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throw new OutOfGridException("Point:(" + iX + "," + iY + ") out of grid."); |
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} |
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public void setCellValue( int iX, int iY, int value) throws OutOfGridException { |
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if (isCellInGrid(iX, iY))
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rasterBuf.setElem(iY, iX, bandToOperate, value); |
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else
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throw new OutOfGridException("Point:(" + iX + "," + iY + ") out of grid."); |
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} |
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public void setCellValue( int iX, int iY, float value) throws OutOfGridException { |
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if (isCellInGrid(iX, iY))
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rasterBuf.setElem(iY, iX, bandToOperate, value); |
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else
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throw new OutOfGridException("Point:(" + iX + "," + iY + ") out of grid."); |
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} |
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public void setCellValue( int iX, int iY, double value) throws OutOfGridException { |
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if (isCellInGrid(iX, iY))
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rasterBuf.setElem(iY, iX, bandToOperate, value); |
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else
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throw new OutOfGridException("Point:(" + iX + "," + iY + ") out of grid."); |
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} |
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public void setNoData( int iX, int iY) { |
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if (isCellInGrid(iX,iY))
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switch(rasterBuf.getDataType()) {
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case Buffer.TYPE_BYTE: rasterBuf.setElem(iY, iX, bandToOperate, |
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rasterBuf.getNoDataValue().isDefined() ? rasterBuf.getNoDataValue().getValue().byteValue() : RasterLibrary.defaultByteNoDataValue); |
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break;
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case Buffer.TYPE_SHORT: rasterBuf.setElem(iY, iX, bandToOperate, |
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rasterBuf.getNoDataValue().isDefined() ? rasterBuf.getNoDataValue().getValue().shortValue() : RasterLibrary.defaultShortNoDataValue); |
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break;
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case Buffer.TYPE_INT: rasterBuf.setElem(iY, iX, bandToOperate, |
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rasterBuf.getNoDataValue().isDefined() ? rasterBuf.getNoDataValue().getValue().intValue() : RasterLibrary.defaultIntegerNoDataValue); |
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break;
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case Buffer.TYPE_FLOAT: rasterBuf.setElem(iY, iX, bandToOperate, |
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rasterBuf.getNoDataValue().isDefined() ? rasterBuf.getNoDataValue().getValue().floatValue() : RasterLibrary.defaultFloatNoDataValue); |
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break;
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case Buffer.TYPE_DOUBLE: rasterBuf.setElem(iY, iX, bandToOperate, |
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rasterBuf.getNoDataValue().isDefined() ? rasterBuf.getNoDataValue().getValue().doubleValue() : RasterLibrary.defaultDoubleNoDataValue); |
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break;
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} |
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} |
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public void setNoDataValue(NoData noDataValue) { |
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if(noDataValue.isDefined())
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rasterBuf.setNoDataValue(noDataValue); |
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} |
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/**
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* Consulta si el grid tiene la posici?n indicada por par?metro o si esta cae
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* fuera del ?rea.
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* @param iX Posici?n X
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* @param iY Posici?n Y
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* @return true si est? incluido en el Grid y false si no lo est?
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*/
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public boolean isCellInGrid(int iX, int iY) { |
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return (iX >= 0 && iX < extent.getNX() && iY >= 0 && iY < extent.getNY()); |
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} |
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/**
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* Asigna la banda sobre la que se realizan las operaciones. Por defecto es la banda 0
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* con lo que para el uso de MDTs no habr? que modificar este valor.
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* @param band Banda sobre la que se realizan las operaciones.
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*/
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public void setBandToOperate(int band) { |
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this.bandToOperate = band;
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} |
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/**
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* Releases buffer resources
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*/
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public void dispose() { |
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if (rasterBuf != null) { |
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rasterBuf.dispose(); |
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} |
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try {
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finalize(); |
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} catch (Throwable e) { |
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} |
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} |
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/*
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* (non-Javadoc)
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* @see java.lang.Object#finalize()
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*/
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protected void finalize() throws Throwable { |
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rasterBuf = null;
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extent = null;
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super.finalize();
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} |
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} |