MultilineHandler.java

/**
 * OrbisGIS is a java GIS application dedicated to research in GIScience.
 * OrbisGIS is developed by the GIS group of the DECIDE team of the 
 * Lab-STICC CNRS laboratory, see <http://www.lab-sticc.fr/>.
 *
 * The GIS group of the DECIDE team is located at :
 *
 * Laboratoire Lab-STICC – CNRS UMR 6285
 * Equipe DECIDE
 * UNIVERSITÉ DE BRETAGNE-SUD
 * Institut Universitaire de Technologie de Vannes
 * 8, Rue Montaigne - BP 561 56017 Vannes Cedex
 * 
 * OrbisGIS is distributed under GPL 3 license.
 *
 * Copyright (C) 2007-2014 CNRS (IRSTV FR CNRS 2488)
 * Copyright (C) 2015-2017 CNRS (Lab-STICC UMR CNRS 6285)
 *
 * This file is part of OrbisGIS.
 *
 * OrbisGIS 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.
 *
 * OrbisGIS 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
 * OrbisGIS. If not, see <http://www.gnu.org/licenses/>.
 *
 * For more information, please consult: <http://www.orbisgis.org/>
 * or contact directly:
 * info_at_ orbisgis.org
 */
package org.orbisgis.mapeditor.map.tool;

import com.vividsolutions.jts.geom.Coordinate;
import com.vividsolutions.jts.geom.Geometry;
import com.vividsolutions.jts.geom.LineString;
import com.vividsolutions.jts.geom.MultiLineString;
import com.vividsolutions.jts.geom.TopologyException;

public class MultilineHandler extends AbstractHandler implements Handler {

        private int linestringIndex;

        public MultilineHandler(Geometry g, int linestringIndex, int vertexIndex,
                Coordinate p, long geomPk) {
                super(g, vertexIndex, p, geomPk);
                this.linestringIndex = linestringIndex;
        }

        public Geometry moveTo(double x, double y)
                throws CannotChangeGeometryException {
                Coordinate p = new Coordinate(x, y);
                MultiLineString mls = (MultiLineString) geometry.clone();
                LineString[] lineString = new LineString[mls.getNumGeometries()];
                for (int i = 0; i < lineString.length; i++) {
                        if (i == linestringIndex) {
                                PointHandler handler = new PointHandler(mls.getGeometryN(i),
                                        vertexIndex, p, geomIndex);
                                lineString[i] = (LineString) handler.moveJTSTo(x, y);
                        } else {
                                lineString[i] = (LineString) mls.getGeometryN(i);
                        }

                }

                mls = gf.createMultiLineString(lineString);
                if (!mls.isValid()) {
                        throw new CannotChangeGeometryException(I18N.tr("Invalid MultiLineString"));
                }

                return mls;
        }

        public Geometry remove() throws TopologyException {

                MultiLineString mls = (MultiLineString) geometry;
                LineString[] linestrings = new LineString[mls.getNumGeometries()];
                int vIndex = vertexIndex;
                for (int i = 0; i < linestrings.length; i++) {
                        if (i == linestringIndex) {
                                PointHandler handler = new PointHandler(mls.getGeometryN(i), vIndex,
                                        null, geomIndex);
                                linestrings[i] = (LineString) handler.removeVertex();
                        } else {
                                linestrings[i] = (LineString) mls.getGeometryN(i);
                        }
                }

                mls = gf.createMultiLineString(linestrings);
                if (!mls.isValid()) {
                        throw new TopologyException(I18N.tr("Invalid MultiLineString"));
                }

                return mls;
        }
}