geos::noding::NodedSegmentString Class Reference

Represents a list of contiguous line segments, and supports noding the segments. More...

#include <NodedSegmentString.h>

Inheritance diagram for geos::noding::NodedSegmentString:

Public Member Functions
std::vector< geom::Coordinate >	getNodedCoordinates ()
	NodedSegmentString (geom::CoordinateSequence *newPts, const void *newContext)
	Creates a new segment string from a list of vertices. More...
	NodedSegmentString (SegmentString *ss)
SegmentNodeList &	getNodeList ()
const SegmentNodeList &	getNodeList () const
size_t	size () const override
const geom::Coordinate &	getCoordinate (std::size_t i) const override
geom::CoordinateSequence *	getCoordinates () const override
	Return a pointer to the CoordinateSequence associated with this SegmentString. More...
geom::CoordinateSequence *	releaseCoordinates ()
bool	isClosed () const override
std::ostream &	print (std::ostream &os) const override
int	getSegmentOctant (std::size_t index) const
	Gets the octant of the segment starting at vertex index. More...
void	addIntersections (algorithm::LineIntersector *li, std::size_t segmentIndex, std::size_t geomIndex)
	Add SegmentNodes for one or both intersections found for a segment of an edge to the edge intersection list.
void	addIntersection (algorithm::LineIntersector *li, std::size_t segmentIndex, std::size_t geomIndex, std::size_t intIndex)
	Add an SegmentNode for intersection intIndex. More...
void	addIntersection (const geom::Coordinate &intPt, std::size_t segmentIndex)
	Add an SegmentNode for intersection intIndex. More...
Public Member Functions inherited from geos::noding::NodableSegmentString
	NodableSegmentString (const void *newContext)
Public Member Functions inherited from geos::noding::SegmentString
	SegmentString (const void *newContext)
	Construct a SegmentString. More...
const void *	getData () const
	Gets the user-defined data for this segment string. More...
void	setData (const void *data)
	Sets the user-defined data for this segment string. More...
virtual std::size_t	size () const =0
virtual const geom::Coordinate &	getCoordinate (std::size_t i) const =0
virtual geom::CoordinateSequence *	getCoordinates () const =0
	Return a pointer to the CoordinateSequence associated with this SegmentString. More...
virtual bool	isClosed () const =0
virtual std::ostream &	print (std::ostream &os) const

Static Public Member Functions
template<class II >
static void	getNodedSubstrings (II from, II too_far, SegmentString::NonConstVect *resultEdgelist)
template<class C >
static void	getNodedSubstrings (C *segStrings, SegmentString::NonConstVect *resultEdgelist)
static void	getNodedSubstrings (const SegmentString::NonConstVect &segStrings, SegmentString::NonConstVect *resultEdgeList)
static SegmentString::NonConstVect *	getNodedSubstrings (const SegmentString::NonConstVect &segStrings)
	Returns allocated object.

Additional Inherited Members
Public Types inherited from geos::noding::SegmentString
typedef std::vector< const SegmentString * >	ConstVect
typedef std::vector< SegmentString * >	NonConstVect

Detailed Description

Represents a list of contiguous line segments, and supports noding the segments.

The line segments are represented by an array of Coordinates. Intended to optimize the noding of contiguous segments by reducing the number of allocated objects. SegmentStrings can carry a context object, which is useful for preserving topological or parentage information. All noded substrings are initialized with the same context object.

Constructor & Destructor Documentation

NodedSegmentString()

geos::noding::NodedSegmentString::NodedSegmentString ( geom::CoordinateSequence *  newPts, const void *  newContext  )

inline

Creates a new segment string from a list of vertices.

Parameters

newPts	CoordinateSequence representing the string, ownership transferred.
newContext	the user-defined data of this segment string (may be null)

Member Function Documentation

addIntersection() [1/2]

void geos::noding::NodedSegmentString::addIntersection ( algorithm::LineIntersector *  li, std::size_t  segmentIndex, std::size_t  geomIndex, std::size_t  intIndex  )

inline

Add an SegmentNode for intersection intIndex.

An intersection that falls exactly on a vertex of the SegmentString is normalized to use the higher of the two possible segmentIndexes

References geos::algorithm::LineIntersector::getIntersection().

addIntersection() [2/2]

void geos::noding::NodedSegmentString::addIntersection ( const geom::Coordinate &  intPt, std::size_t  segmentIndex  )

inline

Add an SegmentNode for intersection intIndex.

An intersection that falls exactly on a vertex of the edge is normalized to use the higher of the two possible segmentIndexes

getCoordinate()

const geom::Coordinate & geos::noding::NodedSegmentString::getCoordinate ( std::size_t  i ) const

overridevirtual

Implements geos::noding::SegmentString.

getCoordinates()

geom::CoordinateSequence * geos::noding::NodedSegmentString::getCoordinates ( ) const

overridevirtual

Return a pointer to the CoordinateSequence associated with this SegmentString.

Note

The CoordinateSequence is owned by this SegmentString!

Implements geos::noding::SegmentString.

getSegmentOctant()

int geos::noding::NodedSegmentString::getSegmentOctant ( std::size_t  index ) const

inline

Gets the octant of the segment starting at vertex index.

Parameters

index

the index of the vertex starting the segment. Must not be the last index in the vertex list

Returns

the octant of the segment at the vertex

isClosed()

bool geos::noding::NodedSegmentString::isClosed ( ) const

overridevirtual

Implements geos::noding::SegmentString.

print()

std::ostream & geos::noding::NodedSegmentString::print ( std::ostream &  os ) const

overridevirtual

Reimplemented from geos::noding::SegmentString.

size()

size_t geos::noding::NodedSegmentString::size ( ) const

inlineoverridevirtual

Implements geos::noding::SegmentString.

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

• NodedSegmentString.h