Java tutorial
/*---------------- FILE HEADER KALYPSO ------------------------------------------ * * This file is part of kalypso. * Copyright (C) 2004 by: * * Technical University Hamburg-Harburg (TUHH) * Institute of River and coastal engineering * Denickestrae 22 * 21073 Hamburg, Germany * http://www.tuhh.de/wb * * and * * Bjoernsen Consulting Engineers (BCE) * Maria Trost 3 * 56070 Koblenz, Germany * http://www.bjoernsen.de * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * Contact: * * E-Mail: * belger@bjoernsen.de * schlienger@bjoernsen.de * v.doemming@tuhh.de * * ---------------------------------------------------------------------------*/ package org.kalypso.model.hydrology.operation.hydrotope; import java.lang.reflect.InvocationTargetException; import java.util.ArrayList; import java.util.Arrays; import java.util.Collection; import java.util.List; import org.apache.commons.collections.CollectionUtils; import org.eclipse.core.runtime.CoreException; import org.eclipse.core.runtime.IProgressMonitor; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.SubMonitor; import org.kalypso.contribs.eclipse.core.runtime.IStatusCollector; import org.kalypso.contribs.eclipse.core.runtime.StatusCollector; import org.kalypso.contribs.eclipse.jface.operation.ICoreRunnableWithProgress; import org.kalypso.contribs.eclipse.ui.progress.ProgressUtilities; import org.kalypso.model.hydrology.binding.HydrotopeCollection; import org.kalypso.model.hydrology.binding.IHydrotope; import org.kalypso.model.hydrology.internal.ModelNA; import org.kalypso.model.hydrology.internal.i18n.Messages; import org.kalypsodeegree.KalypsoDeegreePlugin; import org.kalypsodeegree.model.feature.IFeatureBindingCollection; import org.kalypsodeegree.model.geometry.GM_Envelope; import org.kalypsodeegree.model.geometry.GM_Exception; import org.kalypsodeegree.model.geometry.GM_MultiSurface; import org.kalypsodeegree_impl.model.geometry.JTSAdapter; import com.vividsolutions.jts.geom.Geometry; import com.vividsolutions.jts.geom.GeometryCollection; import com.vividsolutions.jts.geom.GeometryFactory; import com.vividsolutions.jts.geom.MultiPolygon; import com.vividsolutions.jts.geom.Polygon; import com.vividsolutions.jts.geom.util.PolygonExtracter; /** * @author Gernot Belger */ public class HydrotopeBuilder implements ICoreRunnableWithProgress { // FIXME: check! Probably this should be the one of the hydrotopes private static final String COORDINATE_SYSTEM = KalypsoDeegreePlugin.getDefault().getCoordinateSystem(); private final String m_logMessage; private final Collection<HydrotopeUserData> m_hydrotopeBeans; private final HydrotopeCollection m_hydrotopes; public HydrotopeBuilder(final Collection<HydrotopeUserData> hydrotopeBeans, final HydrotopeCollection hydrotopes, final String logMessage) { m_hydrotopeBeans = hydrotopeBeans; m_hydrotopes = hydrotopes; m_logMessage = logMessage; } @Override public IStatus execute(final IProgressMonitor monitor) throws InvocationTargetException { final IStatusCollector log = new StatusCollector(ModelNA.PLUGIN_ID); final int size = m_hydrotopeBeans.size(); final SubMonitor progress = SubMonitor.convert(monitor, Messages.getString("HydrotopeBuilder_0"), size); //$NON-NLS-1$ removeOverlappingGeometriesFromExisting(); final IFeatureBindingCollection<IHydrotope> hydrotopes = m_hydrotopes.getHydrotopes(); int count = 0; for (final HydrotopeUserData bean : m_hydrotopeBeans) { if (count % 100 == 0) { final String msg = String.format(Messages.getString("HydrotopeBuilder_1"), count + 1, size); //$NON-NLS-1$ progress.subTask(msg); ProgressUtilities.worked(monitor, 100); } try { final IHydrotope hydrotop = hydrotopes.addNew(IHydrotope.FEATURE_HYDROTOPE); bean.configureHydrotope(hydrotop, count); } catch (final CoreException e) { log.add(e.getStatus()); } count++; } log.add(IStatus.OK, Messages.getString("HydrotopeBuilder_2"), null, count); //$NON-NLS-1$ return log.asMultiStatus(m_logMessage); } private void removeOverlappingGeometriesFromExisting() throws InvocationTargetException { try { final IFeatureBindingCollection<IHydrotope> hydrotopes = m_hydrotopes.getHydrotopes(); if (CollectionUtils.isEmpty(hydrotopes)) return; final Geometry intersectionArea = buildIntersectionArea(); final GM_Envelope gmEnvelope = JTSAdapter.wrap(intersectionArea.getEnvelopeInternal(), COORDINATE_SYSTEM); final List<IHydrotope> list = hydrotopes.query(gmEnvelope); for (final IHydrotope hydrotop : list) { final Geometry hydrotopGeom = JTSAdapter.export(hydrotop.getGeometry()); if (hydrotopGeom.disjoint(intersectionArea) || hydrotopGeom.touches(intersectionArea)) continue; if (hydrotopGeom.coveredBy(intersectionArea)) hydrotopes.remove(hydrotop); else { final Geometry difference = hydrotopGeom.difference(intersectionArea); final GM_MultiSurface newHydrotopGeometry = toMultiSurface(difference, COORDINATE_SYSTEM); if (newHydrotopGeometry.isEmpty()) hydrotopes.remove(hydrotop); else hydrotop.setGeometry(newHydrotopGeometry); } } } catch (final GM_Exception e) { throw new InvocationTargetException(e); } } private GM_MultiSurface toMultiSurface(final Geometry difference, final String coordinateSystem) { try { final List<Polygon> polygons = PolygonExtracter.getPolygons(difference); final GeometryFactory factory = difference.getFactory(); final MultiPolygon multiPolygon = factory .createMultiPolygon(polygons.toArray(new Polygon[polygons.size()])); return (GM_MultiSurface) JTSAdapter.wrap(multiPolygon, coordinateSystem); } catch (final GM_Exception e) { e.printStackTrace(); return null; } } // FIXME: very heavy operation! private Geometry buildIntersectionArea() { final Collection<Polygon> allPolygons = new ArrayList<>(); for (final HydrotopeUserData hydrotopeBean : m_hydrotopeBeans) allPolygons.addAll(Arrays.asList(hydrotopeBean.getGeometry())); final Polygon[] polygonArray = allPolygons.toArray(new Polygon[allPolygons.size()]); final GeometryCollection combinedArea = JTSAdapter.jtsFactory.createGeometryCollection(polygonArray); return combinedArea.buffer(0.0); } }