src/geom/MultiPoint.cpp

   1 /**********************************************************************
   2  *
   3  * GEOS - Geometry Engine Open Source
   4  * http://geos.osgeo.org
   5  *
   6  * Copyright (C) 2011 Sandro Santilli <strk@keybit.net>
   7  * Copyright (C) 2005-2006 Refractions Research Inc.
   8  * Copyright (C) 2001-2002 Vivid Solutions Inc.
   9  *
  10  * This is free software; you can redistribute and/or modify it under
  11  * the terms of the GNU Lesser General Public Licence as published
  12  * by the Free Software Foundation.
  13  * See the COPYING file for more information.
  14  *
  15  **********************************************************************
  16  *
  17  * Last port: geom/MultiPoint.java r320 (JTS-1.12)
  18  *
  19  **********************************************************************/
  20
  21 #include <geos/geom/MultiPoint.h>
  22 #include <geos/geom/GeometryFactory.h>
  23 #include <geos/geom/Dimension.h>
  24
  25 #include <vector>
  26
  27 using namespace std;
  28
  29 //using namespace geos::operation;
  30
  31 namespace geos {
  32 namespace geom { // geos::geom
  33
  34 /*protected*/
  35 MultiPoint::MultiPoint(vector<Geometry *> *newPoints, const GeometryFactory *factory)
  36         :
  37         Geometry(factory),
  38         GeometryCollection(newPoints,factory)
  39 {
  40 }
  41
  42
  43 MultiPoint::~MultiPoint(){}
  44
  45 Dimension::DimensionType
  46 MultiPoint::getDimension() const {
  47         return Dimension::P; // point
  48 }
  49
  50 int MultiPoint::getBoundaryDimension() const {
  51         return Dimension::False;
  52 }
  53
  54 string MultiPoint::getGeometryType() const {
  55         return "MultiPoint";
  56 }
  57
  58 Geometry* MultiPoint::getBoundary() const {
  59         return getFactory()->createGeometryCollection();
  60 }
  61
  62 bool
  63 MultiPoint::equalsExact(const Geometry *other, double tolerance) const
  64 {
  65     if (!isEquivalentClass(other)) {
  66       return false;
  67     }
  68         return GeometryCollection::equalsExact(other,tolerance);
  69   }
  70
  71 const Coordinate* MultiPoint::getCoordinateN(int n) const {
  72         return ((*geometries)[n])->getCoordinate();
  73 }
  74 GeometryTypeId
  75 MultiPoint::getGeometryTypeId() const {
  76         return GEOS_MULTIPOINT;
  77 }
  78
  79 } // namespace geos::geom
  80 } // namespace geos
  81
  82 /**********************************************************************
  83  * $Log$
  84  * Revision 1.34  2006/05/04 15:49:39  strk
  85  * updated all Geometry::getDimension() methods to return Dimension::DimensionType (closes bug#93)
  86  *
  87  * Revision 1.33  2006/04/28 10:55:39  strk
  88  * Geometry constructors made protected, to ensure all constructions use GeometryFactory,
  89  * which has been made friend of all Geometry derivates. getNumPoints() changed to return
  90  * size_t.
  91  *
  92  * Revision 1.32  2006/03/22 16:58:34  strk
  93  * Removed (almost) all inclusions of geom.h.
  94  * Removed obsoleted .cpp files.
  95  * Fixed a bug in WKTReader not using the provided CoordinateSequence
  96  * implementation, optimized out some memory allocations.
  97  *
  98  * Revision 1.31  2006/03/09 16:46:47  strk
  99  * geos::geom namespace definition, first pass at headers split
 100  *
 101  * Revision 1.30  2006/03/03 10:46:21  strk
 102  * Removed 'using namespace' from headers, added missing headers in .cpp files, removed useless includes in headers (bug#46)
 103  *
 104  * Revision 1.29  2006/02/19 19:46:49  strk
 105  * Packages <-> namespaces mapping for most GEOS internal code (uncomplete, but working). Dir-level libs for index/ subdirs.
 106  *
 107  * Revision 1.28  2006/02/08 17:18:28  strk
 108  * - New WKTWriter::toLineString and ::toPoint convenience methods
 109  * - New IsValidOp::setSelfTouchingRingFormingHoleValid method
 110  * - New Envelope::centre()
 111  * - New Envelope::intersection(Envelope)
 112  * - New Envelope::expandBy(distance, [ydistance])
 113  * - New LineString::reverse()
 114  * - New MultiLineString::reverse()
 115  * - New Geometry::buffer(distance, quadSeg, endCapStyle)
 116  * - Obsoleted toInternalGeometry/fromInternalGeometry
 117  * - More const-correctness in Buffer "package"
 118  *
 119  * Revision 1.27  2006/01/31 19:07:33  strk
 120  * - Renamed DefaultCoordinateSequence to CoordinateArraySequence.
 121  * - Moved GetNumGeometries() and GetGeometryN() interfaces
 122  *   from GeometryCollection to Geometry class.
 123  * - Added getAt(int pos, Coordinate &to) funtion to CoordinateSequence class.
 124  * - Reworked automake scripts to produce a static lib for each subdir and
 125  *   then link all subsystem's libs togheter
 126  * - Moved C-API in it's own top-level dir capi/
 127  * - Moved source/bigtest and source/test to tests/bigtest and test/xmltester
 128  * - Fixed PointLocator handling of LinearRings
 129  * - Changed CoordinateArrayFilter to reduce memory copies
 130  * - Changed UniqueCoordinateArrayFilter to reduce memory copies
 131  * - Added CGAlgorithms::isPointInRing() version working with
 132  *   Coordinate::ConstVect type (faster!)
 133  * - Ported JTS-1.7 version of ConvexHull with big attention to
 134  *   memory usage optimizations.
 135  * - Improved XMLTester output and user interface
 136  * - geos::geom::util namespace used for geom/util stuff
 137  * - Improved memory use in geos::geom::util::PolygonExtractor
 138  * - New ShortCircuitedGeometryVisitor class
 139  * - New operation/predicate package
 140  *
 141  * Revision 1.26  2005/11/10 10:47:09  strk
 142  * Renamed MultiPoint::getCoordinate(int) to MultiPoint::getCoordinateN(int)
 143  * to avoid hiding of Geometry::getCoordinate().
 144  *
 145  * Revision 1.25  2004/09/13 12:39:14  strk
 146  * Made Point and MultiPoint subject to Validity tests.
 147  *
 148  * Revision 1.24  2004/09/12 03:51:27  pramsey
 149  * Casting changes to allow OS/X compilation.
 150  *
 151  * Revision 1.23  2004/07/22 08:45:50  strk
 152  * Documentation updates, memory leaks fixed.
 153  *
 154  * Revision 1.22  2004/07/08 19:34:49  strk
 155  * Mirrored JTS interface of CoordinateSequence, factory and
 156  * default implementations.
 157  * Added CoordinateArraySequenceFactory::instance() function.
 158  *
 159  * Revision 1.21  2004/07/06 17:58:22  strk
 160  * Removed deprecated Geometry constructors based on PrecisionModel and
 161  * SRID specification. Removed SimpleGeometryPrecisionReducer capability
 162  * of changing Geometry's factory. Reverted Geometry::factory member
 163  * to be a reference to external factory.
 164  *
 165  * Revision 1.20  2004/07/05 10:50:20  strk
 166  * deep-dopy construction taken out of Geometry and implemented only
 167  * in GeometryFactory.
 168  * Deep-copy geometry construction takes care of cleaning up copies
 169  * on exception.
 170  * Implemented clone() method for CoordinateSequence
 171  * Changed createMultiPoint(CoordinateSequence) signature to reflect
 172  * copy semantic (by-ref instead of by-pointer).
 173  * Cleaned up documentation.
 174  *
 175  * Revision 1.19  2004/07/02 13:28:26  strk
 176  * Fixed all #include lines to reflect headers layout change.
 177  * Added client application build tips in README.
 178  *
 179  * Revision 1.18  2004/07/01 14:12:44  strk
 180  *
 181  * Geometry constructors come now in two flavors:
 182  *      - deep-copy args (pass-by-reference)
 183  *      - take-ownership of args (pass-by-pointer)
 184  * Same functionality is available through GeometryFactory,
 185  * including buildGeometry().
 186  *
 187  * Revision 1.17  2004/06/28 21:11:43  strk
 188  * Moved getGeometryTypeId() definitions from geom.h to each geometry module.
 189  * Added holes argument check in Polygon.cpp.
 190  *
 191  * Revision 1.16  2004/05/07 09:05:13  strk
 192  * Some const correctness added. Fixed bug in GeometryFactory::createMultiPoint
 193  * to handle NULL CoordinateSequence.
 194  *
 195  * Revision 1.15  2004/04/20 08:52:01  strk
 196  * GeometryFactory and Geometry const correctness.
 197  * Memory leaks removed from SimpleGeometryPrecisionReducer
 198  * and GeometryFactory.
 199  *
 200  * Revision 1.14  2004/04/01 10:44:33  ybychkov
 201  * All "geom" classes from JTS 1.3 upgraded to JTS 1.4
 202  *
 203  * Revision 1.13  2004/03/31 07:50:37  ybychkov
 204  * "geom" partially upgraded to JTS 1.4
 205  *
 206  * Revision 1.12  2003/11/07 01:23:42  pramsey
 207  * Add standard CVS headers licence notices and copyrights to all cpp and h
 208  * files.
 209  *
 210  *
 211  **********************************************************************/
 212