GEOS
3.6.1
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Represents a list of contiguous line segments, and supports noding the segments. More...
#include <NodedSegmentString.h>
Public Member Functions | |
NodedSegmentString (geom::CoordinateSequence *newPts, const void *newContext) | |
SegmentNode * | addIntersectionNode (geom::Coordinate *intPt, std::size_t segmentIndex) |
SegmentNodeList & | getNodeList () |
const SegmentNodeList & | getNodeList () const |
virtual unsigned int | size () const |
virtual const geom::Coordinate & | getCoordinate (unsigned int i) const |
virtual geom::CoordinateSequence * | getCoordinates () const |
Return a pointer to the CoordinateSequence associated with this SegmentString. More... | |
virtual bool | isClosed () const |
virtual std::ostream & | print (std::ostream &os) const |
int | getSegmentOctant (unsigned int index) const |
Gets the octant of the segment starting at vertex index. More... | |
void | addIntersections (algorithm::LineIntersector *li, unsigned int segmentIndex, int geomIndex) |
Add {SegmentNode}s for one or both intersections found for a segment of an edge to the edge intersection list. | |
void | addIntersection (algorithm::LineIntersector *li, unsigned int segmentIndex, int geomIndex, int intIndex) |
Add an SegmentNode for intersection intIndex. More... | |
void | addIntersection (const geom::Coordinate &intPt, unsigned int segmentIndex) |
Add an SegmentNode for intersection intIndex. More... | |
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NodableSegmentString (const void *newContext) | |
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SegmentString (const void *newContext) | |
Construct a SegmentString. More... | |
const void * | getData () const |
void | setData (const void *data) |
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 | |
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typedef std::vector< const SegmentString * > | ConstVect |
typedef std::vector< SegmentString * > | NonConstVect |
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.
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inline |
Creates a new segment string from a list of vertices.
newPts | CoordinateSequence representing the string, ownership transferred. |
data | the user-defined data of this segment string (may be null) |
void geos::noding::NodedSegmentString::addIntersection | ( | algorithm::LineIntersector * | li, |
unsigned int | segmentIndex, | ||
int | geomIndex, | ||
int | intIndex | ||
) |
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
void geos::noding::NodedSegmentString::addIntersection | ( | const geom::Coordinate & | intPt, |
unsigned int | segmentIndex | ||
) |
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
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inline |
Adds an intersection node for a given point and segment to this segment string. If an intersection already exists for this exact location, the existing node will be returned.
intPt | the location of the intersection |
segmentIndex | the index of the segment containing the intersection |
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virtual |
Return a pointer to the CoordinateSequence associated with this SegmentString.
Note that the CoordinateSequence is owned by this SegmentString!
Implements geos::noding::SegmentString.
int geos::noding::NodedSegmentString::getSegmentOctant | ( | unsigned int | index | ) | const |
Gets the octant of the segment starting at vertex index.
index | the index of the vertex starting the segment. Must not be the last index in the vertex list |