geos::algorithm::Distance Class Reference

Functions to compute distance between basic geometric structures. More...

#include <Distance.h>

Static Public Member Functions
static double	segmentToSegment (const geom::Coordinate &A, const geom::Coordinate &B, const geom::Coordinate &C, const geom::Coordinate &D)
static double	pointToSegmentString (const geom::Coordinate &p, const geom::CoordinateSequence *seq)
static double	pointToSegment (const geom::Coordinate &p, const geom::Coordinate &A, const geom::Coordinate &B)
static double	pointToLinePerpendicular (const geom::Coordinate &p, const geom::Coordinate &A, const geom::Coordinate &B)

Detailed Description

Functions to compute distance between basic geometric structures.

Author

Martin Davis

Member Function Documentation

pointToLinePerpendicular()

static double geos::algorithm::Distance::pointToLinePerpendicular ( const geom::Coordinate &  p, const geom::Coordinate &  A, const geom::Coordinate &  B  )

static

Computes the perpendicular distance from a point p to the (infinite) line containing the points AB

Parameters

p	the point to compute the distance for
A	one point of the line
B	another point of the line (must be different to A)

Returns

the distance from p to line AB

Referenced by geos::geom::LineSegment::distancePerpendicular().

pointToSegment()

static double geos::algorithm::Distance::pointToSegment ( const geom::Coordinate &  p, const geom::Coordinate &  A, const geom::Coordinate &  B  )

static

Computes the distance from a point p to a line segment AB

Note: NON-ROBUST!

Parameters

p	the point to compute the distance for
A	one point of the line
B	another point of the line (must be different to A)

Returns

the distance from p to line segment AB

Referenced by geos::geom::LineSegment::distance().

pointToSegmentString()

static double geos::algorithm::Distance::pointToSegmentString ( const geom::Coordinate &  p, const geom::CoordinateSequence *  seq  )

static

Computes the distance from a point to a sequence of line segments.

Parameters

p	a point
seq	a sequence of contiguous line segments defined by their vertices

Returns

the minimum distance between the point and the line segments

segmentToSegment()

static double geos::algorithm::Distance::segmentToSegment ( const geom::Coordinate &  A, const geom::Coordinate &  B, const geom::Coordinate &  C, const geom::Coordinate &  D  )

static

Computes the distance from a line segment AB to a line segment CD

Note: NON-ROBUST!

Parameters

A	a point of one line
B	the second point of (must be different to A)
C	one point of the line
D	another point of the line (must be different to A)

Referenced by geos::geom::LineSegment::distance().

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

• Distance.h