/* * The JTS Topology Suite is a collection of Java classes that * implement the fundamental operations required to validate a given * geo-spatial data set to a known topological specification. * * Copyright (C) 2001 Vivid Solutions * * 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 * * For more information, contact: * * Vivid Solutions * Suite #1A * 2328 Government Street * Victoria BC V8T 5G5 * Canada * * (250)385-6040 * www.vividsolutions.com */ package com.vividsolutions.jts.geom; import com.vividsolutions.jts.operation.BoundaryOp; /** * Models a collection of (@link LineString}s. * <p> * Any collection of LineStrings is a valid MultiLineString. * *@version 1.7 */ public class MultiLineString extends GeometryCollection implements Lineal { private static final long serialVersionUID = 8166665132445433741L; /** * Constructs a <code>MultiLineString</code>. * *@param lineStrings the <code>LineString</code>s for this <code>MultiLineString</code> * , or <code>null</code> or an empty array to create the empty geometry. * Elements may be empty <code>LineString</code>s, but not <code>null</code> * s. *@param precisionModel the specification of the grid of allowable points * for this <code>MultiLineString</code> *@param SRID the ID of the Spatial Reference System used by this * <code>MultiLineString</code> * @deprecated Use GeometryFactory instead */ public MultiLineString(LineString[] lineStrings, PrecisionModel precisionModel, int SRID) { super(lineStrings, new GeometryFactory(precisionModel, SRID)); } /** * @param lineStrings * the <code>LineString</code>s for this <code>MultiLineString</code>, * or <code>null</code> or an empty array to create the empty * geometry. Elements may be empty <code>LineString</code>s, * but not <code>null</code>s. */ public MultiLineString(LineString[] lineStrings, GeometryFactory factory) { super(lineStrings, factory); } public int getDimension() { return 1; } public int getBoundaryDimension() { if (isClosed()) { return Dimension.FALSE; } return 0; } public String getGeometryType() { return "MultiLineString"; } public boolean isClosed() { if (isEmpty()) { return false; } for (int i = 0; i < geometries.length; i++) { if (!((LineString) geometries[i]).isClosed()) { return false; } } return true; } /** * Gets the boundary of this geometry. * The boundary of a lineal geometry is always a zero-dimensional geometry (which may be empty). * * @return the boundary geometry * @see Geometry#getBoundary */ public Geometry getBoundary() { return (new BoundaryOp(this)).getBoundary(); } /** * Creates a {@link MultiLineString} in the reverse * order to this object. * Both the order of the component LineStrings * and the order of their coordinate sequences * are reversed. * * @return a {@link MultiLineString} in the reverse order */ public Geometry reverse() { int nLines = geometries.length; LineString[] revLines = new LineString[nLines]; for (int i = 0; i < geometries.length; i++) { revLines[nLines - 1 - i] = (LineString)geometries[i].reverse(); } return getFactory().createMultiLineString(revLines); } public boolean equalsExact(Geometry other, double tolerance) { if (!isEquivalentClass(other)) { return false; } return super.equalsExact(other, tolerance); } }