/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2006-2010, Open Source Geospatial Foundation (OSGeo)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*/
package org.geotools.gce.grassraster;
import java.awt.Rectangle;
import java.awt.image.RenderedImage;
import java.io.File;
import java.io.IOException;
import org.geotools.coverage.grid.GridCoverage2D;
import org.geotools.coverage.grid.GridEnvelope2D;
import org.geotools.coverage.grid.GridGeometry2D;
import org.geotools.coverage.grid.ViewType;
import org.geotools.coverage.grid.io.AbstractGridCoverageWriter;
import org.geotools.coverage.grid.io.AbstractGridFormat;
import org.geotools.gce.grassraster.core.GrassBinaryRasterWriteHandler;
import org.geotools.gce.grassraster.format.GrassCoverageFormat;
import org.geotools.gce.grassraster.spi.GrassBinaryImageWriterSpi;
import org.geotools.geometry.Envelope2D;
import org.geotools.geometry.GeneralEnvelope;
import org.geotools.resources.coverage.CoverageUtilities;
import org.opengis.coverage.grid.Format;
import org.opengis.coverage.grid.GridCoverage;
import org.opengis.coverage.grid.GridCoverageWriter;
import org.opengis.geometry.DirectPosition;
import org.opengis.geometry.Envelope;
import org.opengis.parameter.GeneralParameterValue;
import org.opengis.parameter.ParameterValue;
import org.opengis.util.ProgressListener;
/**
* Coverage Writer class for writing GRASS raster maps.
* <p>
* The class writes a GRASS raster map to a GRASS workspace (see package documentation for further
* info). The writing is really done via Imageio extended classes.
* </p>
*
* @author Andrea Antonello (www.hydrologis.com)
* @since 3.0
* @see GrassBinaryImageWriter
* @see GrassBinaryRasterWriteHandler
*
* @source $URL: http://svn.osgeo.org/geotools/branches/2.7.x/build/maven/javadoc/../../../modules/unsupported/grassraster/src/main/java/org/geotools/gce/grassraster/GrassCoverageWriter.java $
*/
public class GrassCoverageWriter extends AbstractGridCoverageWriter implements GridCoverageWriter {
private File output;
private ProgressListener monitor = new DummyProgressListener();
/**
* Constructor for the {@link GrassCoverageWriter}.
*/
public GrassCoverageWriter( Object output ) {
if (output instanceof File) {
this.output = (File) output;
} else {
throw new IllegalArgumentException("Illegal input argument!");
}
}
public void setProgressListener( ProgressListener monitor ) {
this.monitor = monitor;
}
/**
* Writes the {@link GridCoverage2D supplied coverage} to disk.
* <p>
* Note that this also takes care to cloes the file handle after writing to disk.
* </p>
*
* @param gridCoverage2D the coverage to write.
* @throws IOException
*/
public void writeRaster( GridCoverage2D gridCoverage2D ) throws IOException {
try {
Envelope2D env = gridCoverage2D.getEnvelope2D();
GridEnvelope2D worldToGrid = gridCoverage2D.getGridGeometry().worldToGrid(env);
double xRes = env.getWidth() / worldToGrid.getWidth();
double yRes = env.getHeight() / worldToGrid.getHeight();
JGrassRegion region = new JGrassRegion(env.getMinX(), env.getMaxX(), env.getMinY(), env
.getMaxY(), xRes, yRes);
GrassBinaryImageWriterSpi writerSpi = new GrassBinaryImageWriterSpi();
GrassBinaryImageWriter writer = new GrassBinaryImageWriter(writerSpi, monitor);
RenderedImage renderedImage = gridCoverage2D.view(ViewType.GEOPHYSICS)
.getRenderedImage();
writer.setOutput(output, region);
writer.write(renderedImage);
writer.dispose();
} catch (Exception e) {
e.printStackTrace();
}
}
public void writeRaster( GridCoverage2D gridCoverage2D, GeneralParameterValue[] params )
throws IOException {
GeneralEnvelope requestedEnvelope = null;
Rectangle dim = null;
JGrassRegion writeRegion = null;
if (params != null) {
for( int i = 0; i < params.length; i++ ) {
final ParameterValue< ? > param = (ParameterValue< ? >) params[i];
final String name = param.getDescriptor().getName().getCode();
if (name.equals(AbstractGridFormat.READ_GRIDGEOMETRY2D.getName().toString())) {
final GridGeometry2D gg = (GridGeometry2D) param.getValue();
requestedEnvelope = new GeneralEnvelope((Envelope) gg.getEnvelope2D());
dim = gg.getGridRange2D().getBounds();
continue;
}
}
if (requestedEnvelope != null && dim != null) {
DirectPosition lowerCorner = requestedEnvelope.getLowerCorner();
double[] westSouth = lowerCorner.getCoordinate();
DirectPosition upperCorner = requestedEnvelope.getUpperCorner();
double[] eastNorth = upperCorner.getCoordinate();
writeRegion = new JGrassRegion(westSouth[0], eastNorth[0], westSouth[1],
eastNorth[1], dim.height, dim.width);
}
}
if (writeRegion == null) {
throw new IOException("Unable to define writing region.");
}
GrassBinaryImageWriterSpi writerSpi = new GrassBinaryImageWriterSpi();
GrassBinaryImageWriter writer = new GrassBinaryImageWriter(writerSpi, monitor);
RenderedImage renderedImage = gridCoverage2D.view(ViewType.GEOPHYSICS).getRenderedImage();
writer.setOutput(output, writeRegion);
writer.write(renderedImage);
writer.dispose();
}
public Format getFormat() {
return new GrassCoverageFormat();
}
public void write( GridCoverage coverage, GeneralParameterValue[] parameters )
throws IllegalArgumentException, IOException {
if (coverage instanceof GridCoverage2D) {
GridCoverage2D gridCoverage = (GridCoverage2D) coverage;
if (parameters == null) {
writeRaster(gridCoverage);
} else {
writeRaster(gridCoverage, parameters);
}
} else {
throw new IllegalArgumentException("Coverage not a GridCoverage2D");
}
}
}