Class DistanceComputer

Functions to compute distance between basic geometric structures.

Inheritance

object

DistanceComputer

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: NetTopologySuite.Algorithm

Assembly: NetTopologySuite.dll

Syntax

public static class DistanceComputer

Methods

PointToLinePerpendicular(Coordinate, Coordinate, Coordinate)

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

Declaration

public static double PointToLinePerpendicular(Coordinate p, Coordinate A, Coordinate B)

Parameters

Type	Name	Description
Coordinate	p	The point to compute the distance for
Coordinate	A	The first point of the first line
Coordinate	B	The second point of the first line (must be different to A)

Returns

Type	Description
double	The perpendicular distance from p to line segment AB

PointToLinePerpendicularSigned(Coordinate, Coordinate, Coordinate)

Computes the perpendicular distance from a point p to the (infinite) line containing the points AB. The result is positive if to the left, otherwise negative.

Declaration

public static double PointToLinePerpendicularSigned(Coordinate p, Coordinate A, Coordinate B)

Parameters

Type	Name	Description
Coordinate	p	The point to compute the distance for
Coordinate	A	The first point of the first line
Coordinate	B	The second point of the first line (must be different to A)

Returns

Type	Description
double	The perpendicular distance from p to line segment AB

PointToSegment(Coordinate, Coordinate, Coordinate)

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

Note: NON-ROBUST!

Declaration

public static double PointToSegment(Coordinate p, Coordinate A, Coordinate B)

Parameters

Type	Name	Description
Coordinate	p	The point to compute the distance for
Coordinate	A	The first point of the first line
Coordinate	B	The second point of the first line (must be different to A)

Returns

Type	Description
double	The distance from p to line segment AB

PointToSegmentString(Coordinate, CoordinateSequence)

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

Declaration

public static double PointToSegmentString(Coordinate p, CoordinateSequence line)

Parameters

Type	Name	Description
Coordinate	p	A point
CoordinateSequence	line	A sequence of contiguous line segments defined by their vertices

Returns

Type	Description
double	The minimum distance between the point and the line segments

PointToSegmentString(Coordinate, Coordinate[])

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

Declaration

public static double PointToSegmentString(Coordinate p, Coordinate[] line)

Parameters

Type	Name	Description
Coordinate	p	A point
Coordinate[]	line	A sequence of contiguous line segments defined by their vertices

Returns

Type	Description
double	The minimum distance between the point and the line segments

SegmentToSegment(Coordinate, Coordinate, Coordinate, Coordinate)

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

Note: NON-ROBUST!

Declaration

public static double SegmentToSegment(Coordinate A, Coordinate B, Coordinate C, Coordinate D)

Parameters

Type	Name	Description
Coordinate	A	The first point of the first line
Coordinate	B	The second point of the first line (must be different to A)
Coordinate	C	The first point of the second line
Coordinate	D	The second point of the second line (must be different to C)

Returns

Type	Description
double	The distance from a line segment AB to a line segment CD