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/*
* This file is part of HortonMachine (http://www.hortonmachine.org)
* (C) HydroloGIS - www.hydrologis.com
*
* The HortonMachine 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 .
*/
package org.hortonmachine.gears.modules.v.vectoroverlayoperators;
import static org.hortonmachine.gears.libs.modules.HMConstants.VECTORPROCESSING;
import static org.hortonmachine.gears.libs.modules.Variables.DIFFERENCE;
import static org.hortonmachine.gears.libs.modules.Variables.INTERSECTION;
import static org.hortonmachine.gears.libs.modules.Variables.SYMDIFFERENCE;
import static org.hortonmachine.gears.libs.modules.Variables.UNION;
import static org.hortonmachine.gears.modules.v.vectoroverlayoperators.OmsVectorOverlayOperators.OMSVECTOROVERLAYOPERATORS_AUTHORCONTACTS;
import static org.hortonmachine.gears.modules.v.vectoroverlayoperators.OmsVectorOverlayOperators.OMSVECTOROVERLAYOPERATORS_AUTHORNAMES;
import static org.hortonmachine.gears.modules.v.vectoroverlayoperators.OmsVectorOverlayOperators.OMSVECTOROVERLAYOPERATORS_DESCRIPTION;
import static org.hortonmachine.gears.modules.v.vectoroverlayoperators.OmsVectorOverlayOperators.OMSVECTOROVERLAYOPERATORS_DOCUMENTATION;
import static org.hortonmachine.gears.modules.v.vectoroverlayoperators.OmsVectorOverlayOperators.OMSVECTOROVERLAYOPERATORS_KEYWORDS;
import static org.hortonmachine.gears.modules.v.vectoroverlayoperators.OmsVectorOverlayOperators.OMSVECTOROVERLAYOPERATORS_LABEL;
import static org.hortonmachine.gears.modules.v.vectoroverlayoperators.OmsVectorOverlayOperators.OMSVECTOROVERLAYOPERATORS_LICENSE;
import static org.hortonmachine.gears.modules.v.vectoroverlayoperators.OmsVectorOverlayOperators.OMSVECTOROVERLAYOPERATORS_NAME;
import static org.hortonmachine.gears.modules.v.vectoroverlayoperators.OmsVectorOverlayOperators.OMSVECTOROVERLAYOPERATORS_STATUS;
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 oms3.annotations.UI;
import org.geotools.data.simple.SimpleFeatureCollection;
import org.geotools.feature.DefaultFeatureCollection;
import org.geotools.feature.simple.SimpleFeatureBuilder;
import org.geotools.feature.simple.SimpleFeatureTypeBuilder;
import org.hortonmachine.gears.libs.exceptions.ModelsIllegalargumentException;
import org.hortonmachine.gears.libs.exceptions.ModelsRuntimeException;
import org.hortonmachine.gears.libs.modules.HMModel;
import org.hortonmachine.gears.libs.monitor.IHMProgressMonitor;
import org.hortonmachine.gears.utils.features.FeatureUtilities;
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.Geometry;
import com.vividsolutions.jts.geom.GeometryCollection;
import com.vividsolutions.jts.geom.LineString;
import com.vividsolutions.jts.geom.Point;
import com.vividsolutions.jts.geom.Polygon;
@Description(OMSVECTOROVERLAYOPERATORS_DESCRIPTION)
@Documentation(OMSVECTOROVERLAYOPERATORS_DOCUMENTATION)
@Author(name = OMSVECTOROVERLAYOPERATORS_AUTHORNAMES, contact = OMSVECTOROVERLAYOPERATORS_AUTHORCONTACTS)
@Keywords(OMSVECTOROVERLAYOPERATORS_KEYWORDS)
@Label(OMSVECTOROVERLAYOPERATORS_LABEL)
@Name(OMSVECTOROVERLAYOPERATORS_NAME)
@Status(OMSVECTOROVERLAYOPERATORS_STATUS)
@License(OMSVECTOROVERLAYOPERATORS_LICENSE)
public class OmsVectorOverlayOperators extends HMModel {
@Description(OMSVECTOROVERLAYOPERATORS_inMap1_DESCRIPTION)
@In
public SimpleFeatureCollection inMap1 = null;
@Description(OMSVECTOROVERLAYOPERATORS_inMap2_DESCRIPTION)
@In
public SimpleFeatureCollection inMap2 = null;
@Description(OMSVECTOROVERLAYOPERATORS_pType_DESCRIPTION)
@UI("combo:" + INTERSECTION + "," + UNION + "," + DIFFERENCE + "," + SYMDIFFERENCE)
@In
public String pType = INTERSECTION;
@Description(doAllowHoles_DESCRIPTION)
@In
public boolean doAllowHoles = true;
@Description(OMSVECTOROVERLAYOPERATORS_outMap_DESCRIPTION)
@Out
public SimpleFeatureCollection outMap = null;
// VARS DOCS START
public static final String OMSVECTOROVERLAYOPERATORS_DESCRIPTION = "A module that performs overlay operations on a pure geometric layer. The resulting feature layer does not consider original attributes tables.";
public static final String OMSVECTOROVERLAYOPERATORS_DOCUMENTATION = "";
public static final String OMSVECTOROVERLAYOPERATORS_KEYWORDS = "JTS, Overlay, Union, Intersect, SymDifference, Difference";
public static final String OMSVECTOROVERLAYOPERATORS_LABEL = VECTORPROCESSING;
public static final String OMSVECTOROVERLAYOPERATORS_NAME = "overlay";
public static final int OMSVECTOROVERLAYOPERATORS_STATUS = 5;
public static final String OMSVECTOROVERLAYOPERATORS_LICENSE = "http://www.gnu.org/licenses/gpl-3.0.html";
public static final String OMSVECTOROVERLAYOPERATORS_AUTHORNAMES = "Andrea Antonello";
public static final String OMSVECTOROVERLAYOPERATORS_AUTHORCONTACTS = "www.hydrologis.com";
public static final String OMSVECTOROVERLAYOPERATORS_inMap1_DESCRIPTION = "The first vector map.";
public static final String OMSVECTOROVERLAYOPERATORS_inMap2_DESCRIPTION = "The second vector map.";
public static final String OMSVECTOROVERLAYOPERATORS_pType_DESCRIPTION = "The overlay type to perform.";
public static final String OMSVECTOROVERLAYOPERATORS_outMap_DESCRIPTION = "The resulting vector map.";
private static final String doAllowHoles_DESCRIPTION = "Allow holes in the result.";
// VARS DOCS STOP
@Execute
public void process() throws Exception {
if (pType.equals(UNION)) {
checkNull(inMap1);
} else {
checkNull(inMap1, inMap2);
}
CoordinateReferenceSystem crs = inMap1.getSchema().getCoordinateReferenceSystem();
outMap = new DefaultFeatureCollection();
SimpleFeatureBuilder builder = null;
pm.message("Preparing geometry layers...");
List geoms1 = FeatureUtilities.featureCollectionToGeometriesList(inMap1, false, null);
GeometryCollection geometryCollection1 = new GeometryCollection(geoms1.toArray(new Geometry[geoms1.size()]), gf);
Geometry g1 = geometryCollection1.buffer(0);
Geometry g2 = null;
if (inMap2 != null) {
List geoms2 = FeatureUtilities.featureCollectionToGeometriesList(inMap2, false, null);
GeometryCollection geometryCollection2 = new GeometryCollection(geoms2.toArray(new Geometry[geoms2.size()]), gf);
g2 = geometryCollection2.buffer(0);
}
pm.beginTask("Performing overlay operation...", IHMProgressMonitor.UNKNOWN);
Geometry resultingGeometryCollection = null;
switch (pType) {
case INTERSECTION:
resultingGeometryCollection = g1.intersection(g2);
break;
case UNION:
if (inMap2 != null) {
resultingGeometryCollection = g1.union(g2);
} else {
resultingGeometryCollection = g1.union();
}
break;
case DIFFERENCE:
resultingGeometryCollection = g1.difference(g2);
break;
case SYMDIFFERENCE:
resultingGeometryCollection = g1.symDifference(g2);
break;
default:
throw new ModelsIllegalargumentException("The overlay type is not supported: " + pType, this, pm);
}
pm.done();
pm.message("Preparing final layer...");
int numGeometries = resultingGeometryCollection.getNumGeometries();
for( int i = 0; i < numGeometries; i++ ) {
Geometry geometryN = resultingGeometryCollection.getGeometryN(i);
int numGeometries2 = geometryN.getNumGeometries();
for( int j = 0; j < numGeometries2; j++ ) {
Geometry geometryN2 = geometryN.getGeometryN(j);
if (builder == null) {
SimpleFeatureTypeBuilder b = new SimpleFeatureTypeBuilder();
b.setName("overlay");
b.setCRS(crs);
if (geometryN2 instanceof Polygon) {
b.add("the_geom", Polygon.class);
} else if (geometryN2 instanceof LineString) {
b.add("the_geom", LineString.class);
} else if (geometryN2 instanceof Point) {
b.add("the_geom", Point.class);
} else {
throw new ModelsRuntimeException("An unexpected geometry type has been created: "
+ geometryN2.getGeometryType(), this);
}
b.add("id", Integer.class);
SimpleFeatureType type = b.buildFeatureType();
builder = new SimpleFeatureBuilder(type);
}
if (geometryN2 instanceof Polygon && !doAllowHoles) {
// remove holes
Polygon polygon = (Polygon) geometryN2;
LineString exteriorRing = polygon.getExteriorRing();
Coordinate[] coordinates = exteriorRing.getCoordinates();
geometryN2 = gf.createPolygon(coordinates);
}
Object[] values = new Object[]{geometryN2, i};
builder.addAll(values);
SimpleFeature feature = builder.buildFeature(null);
((DefaultFeatureCollection) outMap).add(feature);
}
}
}
}
