GEOS
3.8.0dev

A geom::LineSegment which is tagged with its location in a geom::Geometry. More...
#include <TaggedLineSegment.h>
Public Member Functions  
TaggedLineSegment (const geom::Coordinate &p0, const geom::Coordinate &p1, const geom::Geometry *parent, size_t index)  
TaggedLineSegment (const geom::Coordinate &p0, const geom::Coordinate &p1)  
TaggedLineSegment (const TaggedLineSegment &ls)  
const geom::Geometry *  getParent () const 
size_t  getIndex () const 
Public Member Functions inherited from geos::geom::LineSegment  
LineSegment ()  
Segment end.  
LineSegment (const LineSegment &ls)  
LineSegment (const Coordinate &c0, const Coordinate &c1)  
Constructs a LineSegment with the given start and end Coordinates.  
LineSegment (double x0, double y0, double x1, double y1)  
void  setCoordinates (const Coordinate &c0, const Coordinate &c1) 
const Coordinate &  operator[] (std::size_t i) const 
Coordinate &  operator[] (std::size_t i) 
void  setCoordinates (const LineSegment &ls) 
double  getLength () const 
Computes the length of the line segment.  
bool  isHorizontal () const 
Tests whether the segment is horizontal. More...  
bool  isVertical () const 
Tests whether the segment is vertical. More...  
int  orientationIndex (const LineSegment &seg) const 
int  orientationIndex (const LineSegment *seg) const 
int  orientationIndex (const Coordinate &p) const 
Determines the orientation index of a Coordinate relative to this segment. More...  
void  reverse () 
Reverses the direction of the line segment.  
void  normalize () 
Puts the line segment into a normalized form. More...  
double  angle () const 
void  midPoint (Coordinate &ret) const 
Computes the midpoint of the segment. More...  
double  distance (const LineSegment &ls) const 
Computes the distance between this line segment and another one.  
double  distance (const Coordinate &p) const 
Computes the distance between this line segment and a point.  
double  distancePerpendicular (const Coordinate &p) const 
Computes the perpendicular distance between the (infinite) line defined by this line segment and a point.  
void  pointAlong (double segmentLengthFraction, Coordinate &ret) const 
Computes the Coordinate that lies a given fraction along the line defined by this segment. More...  
void  pointAlongOffset (double segmentLengthFraction, double offsetDistance, Coordinate &ret) const 
Computes the Coordinate that lies a given fraction along the line defined by this segment and offset from the segment by a given distance. More...  
double  projectionFactor (const Coordinate &p) const 
Compute the projection factor for the projection of the point p onto this LineSegment. More...  
double  segmentFraction (const Coordinate &inputPt) const 
Computes the fraction of distance (in [0.0, 1.0] ) that the projection of a point occurs along this line segment. More...  
void  project (const Coordinate &p, Coordinate &ret) const 
Compute the projection of a point onto the line determined by this line segment. More...  
bool  project (const LineSegment &seg, LineSegment &ret) const 
Project a line segment onto this line segment and return the resulting line segment. More...  
void  closestPoint (const Coordinate &p, Coordinate &ret) const 
Computes the closest point on this line segment to another point. More...  
int  compareTo (const LineSegment &other) const 
Compares this object with the specified object for order. More...  
bool  equalsTopo (const LineSegment &other) const 
Returns true if other is topologically equal to this LineSegment (e.g. irrespective of orientation). More...  
CoordinateSequence *  closestPoints (const LineSegment &line) 
CoordinateSequence *  closestPoints (const LineSegment *line) 
bool  intersection (const LineSegment &line, Coordinate &coord) const 
bool  lineIntersection (const LineSegment &line, Coordinate &ret) const 
Computes the intersection point of the lines defined by two segments, if there is one. More...  
std::unique_ptr< LineString >  toGeometry (const GeometryFactory &gf) const 
Additional Inherited Members  
Public Attributes inherited from geos::geom::LineSegment  
Coordinate  p0 
Coordinate  p1 
Segment start.  
A geom::LineSegment which is tagged with its location in a geom::Geometry.
Used to index the segments in a geometry and recover the segment locations from the index.