geos::noding::FastNodingValidator Class Reference

Validates that a collection of SegmentStrings is correctly noded. More...

#include <FastNodingValidator.h>

Collaboration diagram for geos::noding::FastNodingValidator:

Public Member Functions
	FastNodingValidator (std::vector< noding::SegmentString * > &newSegStrings)
bool	isValid ()
	Checks for an intersection and reports if one is found. More...
std::string	getErrorMessage () const
	Returns an error message indicating the segments containing the intersection. More...
void	checkValid ()
	Checks for an intersection and throws a TopologyException if one is found. More...

Private Member Functions
void	execute ()
void	checkInteriorIntersections ()
	FastNodingValidator (const FastNodingValidator &other)=delete
FastNodingValidator &	operator= (const FastNodingValidator &rhs)=delete

Private Attributes
geos::algorithm::LineIntersector	li
std::vector< noding::SegmentString * > &	segStrings
std::unique_ptr< NodingIntersectionFinder >	segInt
bool	isValidVar

Detailed Description

Validates that a collection of SegmentStrings is correctly noded.

Indexing is used to improve performance. By default validation stops after a single non-noded intersection is detected. Alternatively, it can be requested to detect all intersections by using setFindAllIntersections(boolean).

The validator does not check for topology collapse situations (e.g. where two segment strings are fully co-incident).

The validator checks for the following situations which indicated incorrect noding:

• Proper intersections between segments (i.e. the intersection is interior to both segments)
• Intersections at an interior vertex (i.e. with an endpoint or another interior vertex)

The client may either test the isValid() condition, or request that a suitable TopologyException be thrown.

Definition at line 60 of file FastNodingValidator.h.

Constructor & Destructor Documentation

geos::noding::FastNodingValidator::FastNodingValidator ( std::vector< noding::SegmentString * > &  newSegStrings )

inline

Definition at line 64 of file FastNodingValidator.h.

geos::noding::FastNodingValidator::FastNodingValidator ( const FastNodingValidator &  other )

privatedelete

Member Function Documentation

void geos::noding::FastNodingValidator::checkInteriorIntersections ( )

private

void geos::noding::FastNodingValidator::checkValid

(

)

Checks for an intersection and throws a TopologyException if one is found.

Exceptions

TopologyException

if an intersection is found

Referenced by geos::geomgraph::EdgeNodingValidator::checkValid().

Here is the caller graph for this function:

void geos::noding::FastNodingValidator::execute ( )

inlineprivate

Definition at line 113 of file FastNodingValidator.h.

std::string geos::noding::FastNodingValidator::getErrorMessage

(

)

const

Returns an error message indicating the segments containing the intersection.

Returns

an error message documenting the intersection location

bool geos::noding::FastNodingValidator::isValid ( )

inline

Checks for an intersection and reports if one is found.

Returns

true if the arrangement contains an interior intersection

Definition at line 80 of file FastNodingValidator.h.

FastNodingValidator& geos::noding::FastNodingValidator::operator= ( const FastNodingValidator &  rhs )

privatedelete

Member Data Documentation

bool geos::noding::FastNodingValidator::isValidVar

private

Definition at line 110 of file FastNodingValidator.h.

geos::algorithm::LineIntersector geos::noding::FastNodingValidator::li

private

Definition at line 104 of file FastNodingValidator.h.

std::unique_ptr<NodingIntersectionFinder> geos::noding::FastNodingValidator::segInt

private

Definition at line 108 of file FastNodingValidator.h.

std::vector<noding::SegmentString*>& geos::noding::FastNodingValidator::segStrings

private

Definition at line 106 of file FastNodingValidator.h.

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The documentation for this class was generated from the following file:

• FastNodingValidator.h