/* * Geopaparazzi - Digital field mapping on Android based devices * Copyright (C) 2010 HydroloGIS (www.hydrologis.com) * * This program 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 eu.geopaparazzi.spatialite.database.spatial.util; import com.vividsolutions.jts.geom.Coordinate; import com.vividsolutions.jts.geom.Geometry; import com.vividsolutions.jts.geom.GeometryFactory; import com.vividsolutions.jts.geom.LineString; import com.vividsolutions.jts.geom.MultiPoint; import com.vividsolutions.jts.geom.Polygon; import java.util.ArrayList; import java.util.List; /** * Utilities class for JTS. * * @author Andrea Antonello (www.hydrologis.com) */ public class JtsUtilities { private static final double DELTA = 0.0000001; private static GeometryFactory gf = new GeometryFactory(); /** * Create a {@link Polygon} from a list of coordinates. * * @param coordinatesList the list of coordinates. * @return the created polygon. */ public static Polygon createPolygon(List<Coordinate> coordinatesList) { coordinatesList = new ArrayList<Coordinate>(coordinatesList); Coordinate firstCoord = coordinatesList.get(0); coordinatesList.add(firstCoord); Polygon polygon = gf.createPolygon(coordinatesList.toArray(new Coordinate[coordinatesList.size()])); return polygon; } /** * Create a {@link com.vividsolutions.jts.geom.LineString} from a list of coordinates. * * @param coordinatesList the list of coordinates. * @return the created line. */ public static LineString createLineString(List<Coordinate> coordinatesList) { LineString lineString = gf.createLineString(coordinatesList.toArray(new Coordinate[coordinatesList.size()])); return lineString; } /** * Create {@link MultiPoint}s from a list of coordinates. * * @param coordinatesList the list of coordinates. * @return the created points. */ public static MultiPoint createPoints(List<Coordinate> coordinatesList) { MultiPoint multiPoints = gf.createMultiPoint(coordinatesList.toArray(new Coordinate[coordinatesList.size()])); return multiPoints; } /** * Create vertex points as polygons from a list of coordinates. * * @param coordinatesList the list of coordinates. * @return the created points. */ public static Geometry createVertexBuffers(List<Coordinate> coordinatesList) { MultiPoint multiPoints = gf.createMultiPoint(coordinatesList.toArray(new Coordinate[coordinatesList.size()])); Geometry buffer = multiPoints.buffer(0.0001); return buffer; } }