org.jgrasstools.gears.modules.r.mapcalc.OmsMapcalc Maven / Gradle / Ivy
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/*
* This file is part of JGrasstools (http://www.jgrasstools.org)
* (C) HydroloGIS - www.hydrologis.com
*
* JGrasstools is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see inRasters;
@Description(OMSMAPCALC_P_FUNCTION_DESCRIPTION)
@UI(JGTConstants.MULTILINE_UI_HINT + "10," + JGTConstants.MAPCALC_UI_HINT)
@In
public String pFunction;
@Description(OMSMAPCALC_OUT_RASTER_DESCRIPTION)
@Out
public GridCoverage2D outRaster = null;
private HashMap regionParameters = null;
private CoordinateReferenceSystem crs;
private Rectangle2D worldBounds;
private long updateInterval;
private long totalCount = 100;
@SuppressWarnings("nls")
@Execute
public void process() throws Exception {
if (!concatOr(outRaster == null, doReset)) {
return;
}
String script = pFunction;
script = script.trim();
Jiffle jiffle = new Jiffle();
jiffle.setScript(script);
jiffle.compile();
JiffleDirectRuntime jiffleRuntime = jiffle.getRuntimeInstance();
CoordinateTransform jiffleCRS = null;
// gather maps
for( GridCoverage2D mapGC : inRasters ) {
if (regionParameters == null) {
regionParameters = CoverageUtilities.getRegionParamsFromGridCoverage(mapGC);
crs = mapGC.getCoordinateReferenceSystem();
worldBounds = mapGC.getEnvelope2D().getBounds2D();
Rectangle gridBounds = mapGC.getGridGeometry().getGridRange2D().getBounds();
jiffleCRS = getTransform(worldBounds, gridBounds);
double xRes = regionParameters.get(CoverageUtilities.XRES).doubleValue();
double yRes = regionParameters.get(CoverageUtilities.YRES).doubleValue();
jiffleRuntime.setWorldByResolution(worldBounds, xRes, yRes);
}
RenderedImage renderedImage = mapGC.getRenderedImage();
// add map
String name = mapGC.getName().toString();
jiffleRuntime.setSourceImage(name, renderedImage, jiffleCRS);
}
if (regionParameters == null) {
throw new ModelsIllegalargumentException("No map has been supplied.", this.getClass().getSimpleName(), pm);
}
int nCols = regionParameters.get(CoverageUtilities.COLS).intValue();
int nRows = regionParameters.get(CoverageUtilities.ROWS).intValue();
long pixelsNum = (long) nCols * nRows;
if (pixelsNum < totalCount) {
totalCount = pixelsNum;
}
updateInterval = pixelsNum / totalCount;
String destName = jiffleRuntime.getDestinationVarNames()[0];
WritableRenderedImage destImg = ImageUtils.createConstantImage(nCols, nRows, 0d);
jiffleRuntime.setDestinationImage(destName, destImg, jiffleCRS);
// create the executor
JiffleExecutor executor = new JiffleExecutor();
WaitingListener listener = new WaitingListener();
executor.addEventListener(listener);
listener.setNumTasks(1);
executor.submit(jiffleRuntime, new JiffleProgressListener(){
private long count = 0;
public void update( long done ) {
if (count == done) {
pm.worked(1);
count = count + updateInterval;
}
}
public void start() {
pm.beginTask("Processing maps...", (int) totalCount);
}
public void setUpdateInterval( double propPixels ) {
}
public void setUpdateInterval( long numPixels ) {
}
public void setTaskSize( long numPixels ) {
count = updateInterval;
}
public long getUpdateInterval() {
if (updateInterval == 0) {
return 1;
}
return updateInterval;
}
public void finish() {
pm.done();
}
});
listener.await();
JiffleExecutorResult result = listener.getResults().get(0);
Map imgMap = result.getImages();
RenderedImage destImage = imgMap.get(destName);
outRaster = CoverageUtilities.buildCoverage(destName, destImage, regionParameters, crs);
executor.shutdown();
}
private static CoordinateTransform getTransform( Rectangle2D worldBounds, Rectangle imageBounds ) {
if (worldBounds == null || worldBounds.isEmpty()) {
throw new IllegalArgumentException("worldBounds must not be null or empty");
}
if (imageBounds == null || imageBounds.isEmpty()) {
throw new IllegalArgumentException("imageBounds must not be null or empty");
}
double xscale = (imageBounds.getMaxX() - imageBounds.getMinX()) / (worldBounds.getMaxX() - worldBounds.getMinX());
double xoff = imageBounds.getMinX() - xscale * worldBounds.getMinX();
double yscale = (imageBounds.getMaxY() - imageBounds.getMinY()) / (worldBounds.getMaxY() - worldBounds.getMinY());
double yoff = imageBounds.getMinY() - yscale * worldBounds.getMinY();
return new AffineCoordinateTransform(new AffineTransform(xscale, 0, 0, yscale, xoff, yoff));
}
}