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/**********************************************************************
* $Id: LinearRing.cpp,v 1.24 2004/12/16 16:27:24 strk Exp $
*
* GEOS - Geometry Engine Open Source
* http://geos.refractions.net
*
* Copyright (C) 2001-2002 Vivid Solutions Inc.
*
* This is free software; you can redistribute and/or modify it under
* the terms of the GNU Lesser General Public Licence as published
* by the Free Software Foundation.
* See the COPYING file for more information.
*
**********************************************************************
* $Log: LinearRing.cpp,v $
* Revision 1.24 2004/12/16 16:27:24 strk
* Fixed LinearRing::clone() to return LinearRing instead of LineString
*
* Revision 1.23 2004/12/03 22:52:56 strk
* enforced const return of CoordinateSequence::toVector() method to derivate classes.
*
* Revision 1.22 2004/07/08 19:34:49 strk
* Mirrored JTS interface of CoordinateSequence, factory and
* default implementations.
* Added DefaultCoordinateSequenceFactory::instance() function.
*
* Revision 1.21 2004/07/06 17:58:22 strk
* Removed deprecated Geometry constructors based on PrecisionModel and
* SRID specification. Removed SimpleGeometryPrecisionReducer capability
* of changing Geometry's factory. Reverted Geometry::factory member
* to be a reference to external factory.
*
* Revision 1.20 2004/07/05 10:50:20 strk
* deep-dopy construction taken out of Geometry and implemented only
* in GeometryFactory.
* Deep-copy geometry construction takes care of cleaning up copies
* on exception.
* Implemented clone() method for CoordinateSequence
* Changed createMultiPoint(CoordinateSequence) signature to reflect
* copy semantic (by-ref instead of by-pointer).
* Cleaned up documentation.
*
* Revision 1.19 2004/07/02 13:28:26 strk
* Fixed all #include lines to reflect headers layout change.
* Added client application build tips in README.
*
* Revision 1.18 2004/07/01 14:12:44 strk
*
* Geometry constructors come now in two flavors:
* - deep-copy args (pass-by-reference)
* - take-ownership of args (pass-by-pointer)
* Same functionality is available through GeometryFactory,
* including buildGeometry().
*
* Revision 1.17 2004/06/28 21:11:43 strk
* Moved getGeometryTypeId() definitions from geom.h to each geometry module.
* Added holes argument check in Polygon.cpp.
*
* Revision 1.16 2004/04/20 13:24:15 strk
* More leaks removed.
*
* Revision 1.15 2004/04/20 08:52:01 strk
* GeometryFactory and Geometry const correctness.
* Memory leaks removed from SimpleGeometryPrecisionReducer
* and GeometryFactory.
*
* Revision 1.14 2004/04/01 10:44:33 ybychkov
* All "geom" classes from JTS 1.3 upgraded to JTS 1.4
*
* Revision 1.13 2003/11/07 01:23:42 pramsey
* Add standard CVS headers licence notices and copyrights to all cpp and h
* files.
*
* Revision 1.12 2003/10/11 03:23:22 strk
* fixed spurious typos
*
**********************************************************************/
#include <geos/geom.h>
#include <geos/util.h>
namespace geos {
LinearRing::LinearRing(const LinearRing &lr): LineString(lr) {}
/**
* Constructs a <code>LinearRing</code> with the given points.
*
*@param points points forming a closed and simple linestring, or
* <code>null</code> or an empty array to create the empty geometry.
* This array must not contain <code>null</code> elements.
* The created LinearRing will take ownership of points.
*
*/
LinearRing::LinearRing(CoordinateSequence* newCoords, const GeometryFactory *newFactory): LineString(newCoords,newFactory) {
validateConstruction();
}
void LinearRing::validateConstruction() {
if (!LineString::isEmpty() && !LineString::isClosed()) {
throw new IllegalArgumentException("points must form a closed linestring");
}
if (!points->isEmpty() && (points->getSize()>=1 && points->getSize()<=3)) {
throw new IllegalArgumentException("Number of points must be 0 or >3");
}
}
// superclass LineString will delete internal CoordinateSequence
LinearRing::~LinearRing(){
}
bool LinearRing::isSimple() const {
return true;
}
string LinearRing::getGeometryType() const {
return "LinearRing";
}
bool LinearRing::isClosed() const {
return true;
}
void LinearRing::setPoints(CoordinateSequence* cl){
const vector<Coordinate> *v=cl->toVector();
points->setPoints(*(v));
//delete v;
}
Geometry* LinearRing::clone() const {
return new LinearRing(*this);
}
GeometryTypeId
LinearRing::getGeometryTypeId() const {
return GEOS_LINEARRING;
}
}
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