/*
* 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.gears.modules.v.vectorclipper;
import static org.jgrasstools.gears.i18n.GearsMessages.OMSVECTORCLIPPER_AUTHORCONTACTS;
import static org.jgrasstools.gears.i18n.GearsMessages.OMSVECTORCLIPPER_AUTHORNAMES;
import static org.jgrasstools.gears.i18n.GearsMessages.OMSVECTORCLIPPER_DESCRIPTION;
import static org.jgrasstools.gears.i18n.GearsMessages.OMSVECTORCLIPPER_DOCUMENTATION;
import static org.jgrasstools.gears.i18n.GearsMessages.OMSVECTORCLIPPER_IN_CLIPPER_DESCRIPTION;
import static org.jgrasstools.gears.i18n.GearsMessages.OMSVECTORCLIPPER_IN_MAP_DESCRIPTION;
import static org.jgrasstools.gears.i18n.GearsMessages.OMSVECTORCLIPPER_KEYWORDS;
import static org.jgrasstools.gears.i18n.GearsMessages.OMSVECTORCLIPPER_LABEL;
import static org.jgrasstools.gears.i18n.GearsMessages.OMSVECTORCLIPPER_LICENSE;
import static org.jgrasstools.gears.i18n.GearsMessages.OMSVECTORCLIPPER_NAME;
import static org.jgrasstools.gears.i18n.GearsMessages.OMSVECTORCLIPPER_OUT_MAP_DESCRIPTION;
import static org.jgrasstools.gears.i18n.GearsMessages.OMSVECTORCLIPPER_P_MAX_THREADS_DESCRIPTION;
import static org.jgrasstools.gears.i18n.GearsMessages.OMSVECTORCLIPPER_STATUS;
import java.util.List;
import java.util.concurrent.ConcurrentLinkedQueue;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import org.geotools.data.simple.SimpleFeatureCollection;
import org.geotools.data.simple.SimpleFeatureIterator;
import org.geotools.feature.DefaultFeatureCollection;
import org.jgrasstools.gears.libs.exceptions.ModelsIllegalargumentException;
import org.jgrasstools.gears.libs.modules.JGTModel;
import org.jgrasstools.gears.libs.monitor.IJGTProgressMonitor;
import org.jgrasstools.gears.utils.features.FeatureUtilities;
import org.jgrasstools.gears.utils.geometry.EGeometryType;
import org.opengis.feature.simple.SimpleFeature;
import com.vividsolutions.jts.geom.Geometry;
import com.vividsolutions.jts.geom.prep.PreparedGeometry;
import com.vividsolutions.jts.geom.prep.PreparedGeometryFactory;
import com.vividsolutions.jts.index.strtree.STRtree;
import oms3.annotations.Author;
import oms3.annotations.Description;
import oms3.annotations.Documentation;
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.Out;
import oms3.annotations.Status;
@Description(OMSVECTORCLIPPER_DESCRIPTION)
@Documentation(OMSVECTORCLIPPER_DOCUMENTATION)
@Author(name = OMSVECTORCLIPPER_AUTHORNAMES, contact = OMSVECTORCLIPPER_AUTHORCONTACTS)
@Keywords(OMSVECTORCLIPPER_KEYWORDS)
@Label(OMSVECTORCLIPPER_LABEL)
@Name(OMSVECTORCLIPPER_NAME)
@Status(OMSVECTORCLIPPER_STATUS)
@License(OMSVECTORCLIPPER_LICENSE)
public class OmsVectorClipper extends JGTModel {
@Description(OMSVECTORCLIPPER_IN_MAP_DESCRIPTION)
@In
public SimpleFeatureCollection inMap = null;
@Description(OMSVECTORCLIPPER_IN_CLIPPER_DESCRIPTION)
@In
public SimpleFeatureCollection inClipper = null;
@Description(OMSVECTORCLIPPER_P_MAX_THREADS_DESCRIPTION)
@In
public int pMaxThreads = 1;
@Description(OMSVECTORCLIPPER_OUT_MAP_DESCRIPTION)
@Out
public SimpleFeatureCollection outMap = null;
@Execute
public void process() throws Exception {
checkNull(inMap, inClipper);
if (!EGeometryType.isPolygon(inClipper.getSchema().getGeometryDescriptor())) {
throw new ModelsIllegalargumentException("The clipping geometry needs to be polygon.", this, pm);
}
pm.beginTask("Indexing geometries...", IJGTProgressMonitor.UNKNOWN);
STRtree geomsTree = new STRtree(2000);
SimpleFeatureIterator featuresToClip = inMap.features();
while( featuresToClip.hasNext() ) {
SimpleFeature feature = featuresToClip.next();
Geometry geometry = (Geometry) feature.getDefaultGeometry();
geomsTree.insert(geometry.getEnvelopeInternal(), feature);
}
pm.done();
// List<SimpleFeature> inData = FeatureUtilities.featureCollectionToList(inMap);
// int size = inData.size();
ExecutorService fixedThreadPool = Executors.newFixedThreadPool(pMaxThreads);
final ConcurrentLinkedQueue<SimpleFeature> newFeatures = new ConcurrentLinkedQueue<SimpleFeature>();
List<Geometry> clipperGeoms = FeatureUtilities.featureCollectionToGeometriesList(inClipper, false, null);
int index = 1;
int clipperCount = clipperGeoms.size();
for( Geometry clipperGeom : clipperGeoms ) {
pm.message("Working on geometry " + (index++) + " of " + clipperCount);
final List< ? > result = geomsTree.query(clipperGeom.getEnvelopeInternal());
int size = result.size();
int splitSize = (int) Math.ceil(size / (double) pMaxThreads);
final CountDownLatch latch = new CountDownLatch(pMaxThreads);
pm.beginTask("Clipping...", pMaxThreads);
for( int i = 0; i < size; i = i + splitSize + 1 ) {
int endIndex = i + splitSize;
if (endIndex > size) {
endIndex = size - 1;
}
final PreparedGeometry cGeom = PreparedGeometryFactory.prepare(clipperGeom);
final int start = i;
final int end = endIndex;
Runnable runner = new Runnable(){
public void run() {
// pm.errorMessage(start + "->" +end);
try {
for( int j = start; j <= end; j++ ) {
SimpleFeature feature = (SimpleFeature) result.get(j);
Geometry geometry = (Geometry) feature.getDefaultGeometry();
if (cGeom.intersects(geometry)) {
Geometry intersectionGeom = cGeom.getGeometry().intersection(geometry);
feature.setDefaultGeometry(intersectionGeom);
newFeatures.add(feature);
}
}
} catch (Exception ex) {
ex.printStackTrace();
}
latch.countDown();
pm.worked(1);
}
};
fixedThreadPool.execute(runner);
}
latch.await();
pm.done();
}
try {
fixedThreadPool.shutdown();
fixedThreadPool.awaitTermination(30, TimeUnit.DAYS);
fixedThreadPool.shutdownNow();
} catch (InterruptedException e) {
e.printStackTrace();
}
outMap = new DefaultFeatureCollection();
((DefaultFeatureCollection) outMap).addAll(newFeatures);
}
}