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

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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

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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

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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

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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

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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