/*
* 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 <http://www.gnu.org/licenses/>.
*/
package org.jgrasstools.lesto.modules.raster;
import static java.lang.Math.round;
import static org.jgrasstools.gears.i18n.GearsMessages.OMSHYDRO_AUTHORCONTACTS;
import static org.jgrasstools.gears.i18n.GearsMessages.OMSHYDRO_AUTHORNAMES;
import static org.jgrasstools.gears.i18n.GearsMessages.OMSHYDRO_DRAFT;
import static org.jgrasstools.gears.i18n.GearsMessages.OMSHYDRO_LICENSE;
import java.io.File;
import java.util.List;
import oms3.annotations.Author;
import oms3.annotations.Description;
import oms3.annotations.Execute;
import oms3.annotations.In;
import oms3.annotations.Keywords;
import oms3.annotations.Label;
import oms3.annotations.License;
import oms3.annotations.Name;
import oms3.annotations.Status;
import oms3.annotations.UI;
import org.geotools.coverage.grid.GridCoverage2D;
import org.geotools.feature.DefaultFeatureCollection;
import org.geotools.feature.simple.SimpleFeatureBuilder;
import org.geotools.feature.simple.SimpleFeatureTypeBuilder;
import org.jgrasstools.gears.io.las.ALasDataManager;
import org.jgrasstools.gears.io.las.core.LasRecord;
import org.jgrasstools.gears.libs.modules.JGTConstants;
import org.jgrasstools.gears.libs.modules.JGTModel;
import org.jgrasstools.gears.libs.modules.Variables;
import org.jgrasstools.gears.modules.r.interpolation2d.OmsSurfaceInterpolator;
import org.jgrasstools.gears.modules.r.rastergenerator.OmsRasterGenerator;
import org.jgrasstools.gears.utils.RegionMap;
import org.jgrasstools.gears.utils.coverage.CoverageUtilities;
import org.opengis.feature.simple.SimpleFeature;
import org.opengis.feature.simple.SimpleFeatureType;
import org.opengis.referencing.crs.CoordinateReferenceSystem;
import com.vividsolutions.jts.geom.Coordinate;
import com.vividsolutions.jts.geom.Point;
import com.vividsolutions.jts.geom.Polygon;
@Description("Convert a las to a raster through IDW interpolation.")
@Author(name = OMSHYDRO_AUTHORNAMES, contact = OMSHYDRO_AUTHORCONTACTS)
@Keywords("raster, IDW, interpolation, lidar")
@Label(JGTConstants.LESTO + "/raster")
@Name("las2rasterinterpolator")
@Status(OMSHYDRO_DRAFT)
@License(OMSHYDRO_LICENSE)
public class Las2RasterInterpolator extends JGTModel {
@Description("Las files folder main index file path.")
@UI(JGTConstants.FILEIN_UI_HINT)
@In
public String inIndexFile = null;
@Description("A dtm raster to use for the area of interest and to calculate the elevation threshold.")
@UI(JGTConstants.FILEIN_UI_HINT)
@In
public String inDtm;
@Description("Flag to normalize with the dtm.")
@In
public boolean doNormalize = true;
@Description("New x resolution (if null, the dtm is used).")
@In
public Double pXres;
@Description("New y resolution (if null, the dtm is used).")
@In
public Double pYres;
@Description("The elevation threshold to apply to the chm.")
@In
public double pThreshold = 0.0;
@Description("The impulse to use (if empty everything is used).")
@In
public Integer pImpulse = 1;
@Description("The output raster.")
@UI(JGTConstants.FILEOUT_UI_HINT)
@In
public String outRaster = null;
@Execute
public void process() throws Exception {
checkNull(inIndexFile, inDtm);
GridCoverage2D inDtmGC = getRaster(inDtm);
Polygon polygon = CoverageUtilities.getRegionPolygon(inDtmGC);
CoordinateReferenceSystem crs = inDtmGC.getCoordinateReferenceSystem();
try (ALasDataManager lasData = ALasDataManager.getDataManager(new File(inIndexFile), inDtmGC, pThreshold, crs)) {
lasData.open();
if (pImpulse != null) {
lasData.setImpulsesConstraint(new double[]{pImpulse});
}
List<LasRecord> lasPoints = lasData.getPointsInGeometry(polygon, false);
if (lasPoints.size() == 0) {
pm.message("No points foudn in the given area. Check your input.");
return;
}
RegionMap regionMap = CoverageUtilities.getRegionParamsFromGridCoverage(inDtmGC);
double north = regionMap.getNorth();
double south = regionMap.getSouth();
double east = regionMap.getEast();
double west = regionMap.getWest();
if (pXres == null) {
pXres = regionMap.getXres();
}
if (pYres == null) {
pYres = regionMap.getYres();
}
int newRows = (int) round((north - south) / pYres);
int newCols = (int) round((east - west) / pXres);
DefaultFeatureCollection newCollection = new DefaultFeatureCollection();
final SimpleFeatureTypeBuilder b = new SimpleFeatureTypeBuilder();
b.setName("lasdata");
b.setCRS(crs);
b.add("the_geom", Point.class);
b.add("elev", Double.class);
final SimpleFeatureType featureType = b.buildFeatureType();
SimpleFeatureBuilder builder = new SimpleFeatureBuilder(featureType);
pm.beginTask("Prepare points collection for interpolation...", lasPoints.size());
for( LasRecord r : lasPoints ) {
final Point point = gf.createPoint(new Coordinate(r.x, r.y));
final Object[] values = new Object[]{point, r.z,};
builder.addAll(values);
final SimpleFeature feature = builder.buildFeature(null);
newCollection.add(feature);
pm.worked(1);
}
pm.done();
OmsRasterGenerator omsRasterGenerator = new OmsRasterGenerator();
omsRasterGenerator.pNorth = north;
omsRasterGenerator.pSouth = south;
omsRasterGenerator.pWest = west;
omsRasterGenerator.pEast = east;
omsRasterGenerator.pXres = (east - west) / newCols;
omsRasterGenerator.pYres = (north - south) / newRows;
omsRasterGenerator.inCrs = crs;
omsRasterGenerator.doRandom = false;
omsRasterGenerator.process();
OmsSurfaceInterpolator idwInterpolator = new OmsSurfaceInterpolator();
idwInterpolator.inVector = newCollection;
idwInterpolator.inGrid = omsRasterGenerator.outRaster;
idwInterpolator.inMask = null;
idwInterpolator.fCat = "elev";
idwInterpolator.pMode = Variables.IDW;
idwInterpolator.pMaxThreads = getDefaultThreadsNum();
idwInterpolator.pBuffer = 10.0;
idwInterpolator.pm = pm;
idwInterpolator.process();
GridCoverage2D outRasterGC = idwInterpolator.outRaster;
dumpRaster(outRasterGC, outRaster);
}
}
}