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/**********************************************************************
* $Id: ConsistentAreaTester.cpp 1820 2006-09-06 16:54:23Z mloskot $
*
* GEOS - Geometry Engine Open Source
* http://geos.refractions.net
*
* Copyright (C) 2005-2006 Refractions Research Inc.
* 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.
*
**********************************************************************/
#include <geos/operation/valid/ConsistentAreaTester.h>
#include <geos/algorithm/LineIntersector.h>
#include <geos/geomgraph/GeometryGraph.h>
#include <geos/geomgraph/EdgeEnd.h>
#include <geos/geomgraph/EdgeEndStar.h>
#include <geos/geomgraph/Edge.h>
#include <geos/geomgraph/index/SegmentIntersector.h>
#include <geos/geom/Coordinate.h>
#include <geos/operation/relate/RelateNodeGraph.h>
#include <geos/operation/relate/RelateNode.h>
#include <geos/operation/relate/EdgeEndBundle.h>
#include <memory> // auto_ptr
#include <cassert>
using namespace std;
using namespace geos::algorithm;
using namespace geos::geomgraph;
using namespace geos::geom;
namespace geos {
namespace operation { // geos.operation
namespace valid { // geos.operation.valid
ConsistentAreaTester::ConsistentAreaTester(GeometryGraph *newGeomGraph)
:
li(),
geomGraph(newGeomGraph),
nodeGraph(),
invalidPoint()
{
}
ConsistentAreaTester::~ConsistentAreaTester()
{
}
Coordinate&
ConsistentAreaTester::getInvalidPoint()
{
return invalidPoint;
}
bool
ConsistentAreaTester::isNodeConsistentArea()
{
using geomgraph::index::SegmentIntersector;
/**
* To fully check validity, it is necessary to
* compute ALL intersections, including self-intersections within a single edge.
*/
auto_ptr<SegmentIntersector> intersector(geomGraph->computeSelfNodes(&li, true));
if (intersector->hasProperIntersection()) {
invalidPoint=intersector->getProperIntersectionPoint();
return false;
}
nodeGraph.build(geomGraph);
return isNodeEdgeAreaLabelsConsistent();
}
/*private*/
bool
ConsistentAreaTester::isNodeEdgeAreaLabelsConsistent()
{
map<Coordinate*,Node*,CoordinateLessThen>& nMap=nodeGraph.getNodeMap();
map<Coordinate*,Node*,CoordinateLessThen>::iterator nodeIt;
for(nodeIt=nMap.begin();nodeIt!=nMap.end();nodeIt++) {
relate::RelateNode *node=static_cast<relate::RelateNode*>(nodeIt->second);
if (!node->getEdges()->isAreaLabelsConsistent()) {
invalidPoint=node->getCoordinate();
return false;
}
}
return true;
}
/*public*/
bool
ConsistentAreaTester::hasDuplicateRings()
{
map<Coordinate*,Node*,CoordinateLessThen>& nMap=nodeGraph.getNodeMap();
map<Coordinate*,Node*,CoordinateLessThen>::iterator nodeIt;
for(nodeIt=nMap.begin(); nodeIt!=nMap.end(); ++nodeIt)
{
assert(dynamic_cast<relate::RelateNode*>(nodeIt->second));
relate::RelateNode *node=static_cast<relate::RelateNode*>(nodeIt->second);
EdgeEndStar *ees=node->getEdges();
EdgeEndStar::iterator endIt=ees->end();
for(EdgeEndStar::iterator it=ees->begin(); it!=endIt; ++it)
{
assert(dynamic_cast<relate::EdgeEndBundle*>(*it));
relate::EdgeEndBundle *eeb=static_cast<relate::EdgeEndBundle*>(*it);
if (eeb->getEdgeEnds()->size()>1) {
invalidPoint=eeb->getEdge()->getCoordinate(0);
return true;
}
}
}
return false;
}
} // namespace geos.operation.valid
} // namespace geos.operation
} // namespace geos
/**********************************************************************
* $Log$
* Revision 1.17 2006/03/27 10:37:59 strk
* Reduced heap allocations and probability of error by making LineIntersector
* and RelateNodeGraph part of ConsistentAreaTester class .
*
* Revision 1.16 2006/03/21 13:11:29 strk
* opRelate.h header split
*
* Revision 1.15 2006/03/20 16:57:44 strk
* spatialindex.h and opValid.h headers split
*
* Revision 1.14 2006/03/17 16:48:55 strk
* LineIntersector and PointLocator made complete components of RelateComputer
* (were statics const pointers before). Reduced inclusions from opRelate.h
* and opValid.h, updated .cpp files to allow build.
*
* Revision 1.13 2006/03/09 16:46:49 strk
* geos::geom namespace definition, first pass at headers split
**********************************************************************/
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