/*
* 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.vectorsimplifier;
import static org.jgrasstools.gears.i18n.GearsMessages.OMSVECTORSIMPLIFIER_AUTHORCONTACTS;
import static org.jgrasstools.gears.i18n.GearsMessages.OMSVECTORSIMPLIFIER_AUTHORNAMES;
import static org.jgrasstools.gears.i18n.GearsMessages.OMSVECTORSIMPLIFIER_DESCRIPTION;
import static org.jgrasstools.gears.i18n.GearsMessages.OMSVECTORSIMPLIFIER_DOCUMENTATION;
import static org.jgrasstools.gears.i18n.GearsMessages.OMSVECTORSIMPLIFIER_KEYWORDS;
import static org.jgrasstools.gears.i18n.GearsMessages.OMSVECTORSIMPLIFIER_LABEL;
import static org.jgrasstools.gears.i18n.GearsMessages.OMSVECTORSIMPLIFIER_LICENSE;
import static org.jgrasstools.gears.i18n.GearsMessages.OMSVECTORSIMPLIFIER_NAME;
import static org.jgrasstools.gears.i18n.GearsMessages.OMSVECTORSIMPLIFIER_STATUS;
import static org.jgrasstools.gears.i18n.GearsMessages.OMSVECTORSIMPLIFIER_IN_VECTOR_DESCRIPTION;
import static org.jgrasstools.gears.i18n.GearsMessages.OMSVECTORSIMPLIFIER_OUT_VECTOR_DESCRIPTION;
import static org.jgrasstools.gears.i18n.GearsMessages.OMSVECTORSIMPLIFIER_P_TOLERANCE_DESCRIPTION;
import static org.jgrasstools.gears.i18n.GearsMessages.OMSVECTORSIMPLIFIER_P_TYPE_DESCRIPTION;
import java.util.ArrayList;
import java.util.List;
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;
import org.geotools.data.simple.SimpleFeatureCollection;
import org.geotools.feature.DefaultFeatureCollection;
import org.geotools.feature.FeatureIterator;
import org.jgrasstools.gears.libs.modules.JGTModel;
import org.jgrasstools.gears.utils.features.FeatureGeometrySubstitutor;
import org.jgrasstools.gears.utils.geometry.GeometryUtilities;
import org.opengis.feature.simple.SimpleFeature;
import com.vividsolutions.jts.geom.Geometry;
import com.vividsolutions.jts.geom.GeometryCollection;
import com.vividsolutions.jts.geom.GeometryFactory;
import com.vividsolutions.jts.simplify.DouglasPeuckerSimplifier;
import com.vividsolutions.jts.simplify.TopologyPreservingSimplifier;
@Description(OMSVECTORSIMPLIFIER_DESCRIPTION)
@Documentation(OMSVECTORSIMPLIFIER_DOCUMENTATION)
@Author(name = OMSVECTORSIMPLIFIER_AUTHORNAMES, contact = OMSVECTORSIMPLIFIER_AUTHORCONTACTS)
@Keywords(OMSVECTORSIMPLIFIER_KEYWORDS)
@Label(OMSVECTORSIMPLIFIER_LABEL)
@Name(OMSVECTORSIMPLIFIER_NAME)
@Status(OMSVECTORSIMPLIFIER_STATUS)
@License(OMSVECTORSIMPLIFIER_LICENSE)
public class OmsVectorSimplifier extends JGTModel {
@Description(OMSVECTORSIMPLIFIER_IN_VECTOR_DESCRIPTION)
@In
public SimpleFeatureCollection inVector;
@Description(OMSVECTORSIMPLIFIER_P_TYPE_DESCRIPTION)
@In
public int pType = 0;
@Description(OMSVECTORSIMPLIFIER_P_TOLERANCE_DESCRIPTION)
@In
public double pTolerance = 0.2;
@Description(OMSVECTORSIMPLIFIER_OUT_VECTOR_DESCRIPTION)
@Out
public SimpleFeatureCollection outVector;
private GeometryFactory gF = GeometryUtilities.gf();
@Execute
public void process() throws Exception {
if (!concatOr(outVector == null, doReset)) {
return;
}
FeatureIterator<SimpleFeature> inFeatureIterator = inVector.features();
outVector = new DefaultFeatureCollection();
FeatureGeometrySubstitutor fGS = new FeatureGeometrySubstitutor(inVector.getSchema());
int size = inVector.size();
pm.beginTask("Simplifing features...", size);
while( inFeatureIterator.hasNext() ) {
SimpleFeature feature = inFeatureIterator.next();
Geometry geometry = (Geometry) feature.getDefaultGeometry();
List<Geometry> geomList = new ArrayList<Geometry>();
int numGeometries = geometry.getNumGeometries();
for( int i = 0; i < numGeometries; i++ ) {
Geometry geometryN = geometry.getGeometryN(i);
switch( pType ) {
case 0:
TopologyPreservingSimplifier tpSimplifier = new TopologyPreservingSimplifier(geometryN);
tpSimplifier.setDistanceTolerance(pTolerance);
Geometry tpsGeometry = tpSimplifier.getResultGeometry();
geomList.add(tpsGeometry);
break;
case 1:
DouglasPeuckerSimplifier dpSimplifier = new DouglasPeuckerSimplifier(geometryN);
dpSimplifier.setDistanceTolerance(pTolerance);
Geometry dpsGeometry = dpSimplifier.getResultGeometry();
geomList.add(dpsGeometry);
break;
default:
}
}
Geometry newGeometry = null;
if (geomList.size() == 1) {
newGeometry = geomList.get(0);
} else {
Geometry[] geomArray = (Geometry[]) geomList.toArray(new Geometry[geomList.size()]);
newGeometry = new GeometryCollection(geomArray, gF);
}
SimpleFeature newFeature = fGS.substituteGeometry(feature, newGeometry);
((DefaultFeatureCollection) outVector).add(newFeature);
pm.worked(1);
}
pm.done();
inFeatureIterator.close();
}
}