Class QuadrantOp

Utility functions for working with quadrants, which are numbered as follows:

1 | 0 --+-- 2 | 3

Inheritance
object
QuadrantOp
Inherited Members
Namespace: NetTopologySuite.GeometriesGraph
Assembly: NetTopologySuite.dll
Syntax
[Obsolete("Use NetTopologySuite.Geometries.Quadrant")]
public class QuadrantOp

Fields

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NE

North-East

Declaration
public static readonly int NE
Field Value
Type Description
int
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NW

North-West

Declaration
public static readonly int NW
Field Value
Type Description
int
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SE

South-East

Declaration
public static readonly int SE
Field Value
Type Description
int
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SW

South-West

Declaration
public static readonly int SW
Field Value
Type Description
int

Methods

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CommonHalfPlane(int, int)

Returns the right-hand quadrant of the halfplane defined by the two quadrants, or -1 if the quadrants are opposite, or the quadrant if they are identical.

Declaration
public static int CommonHalfPlane(int quad1, int quad2)
Parameters
Type Name Description
int quad1
int quad2
Returns
Type Description
int
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IsInHalfPlane(int, int)

Returns whether the given quadrant lies within the given halfplane (specified by its right-hand quadrant).

Declaration
public static bool IsInHalfPlane(int quad, int halfPlane)
Parameters
Type Name Description
int quad
int halfPlane
Returns
Type Description
bool
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IsNorthern(int)

Returns true if the given quadrant is 0 or 1.

Declaration
public static bool IsNorthern(int quad)
Parameters
Type Name Description
int quad
Returns
Type Description
bool
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IsOpposite(int, int)

Returns true if the quadrants are 1 and 3, or 2 and 4.

Declaration
public static bool IsOpposite(int quad1, int quad2)
Parameters
Type Name Description
int quad1
int quad2
Returns
Type Description
bool
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Quadrant(Coordinate, Coordinate)

Returns the quadrant of a directed line segment from p0 to p1.

Declaration
public static int Quadrant(Coordinate p0, Coordinate p1)
Parameters
Type Name Description
Coordinate p0
Coordinate p1
Returns
Type Description
int
Exceptions
Type Condition
ArgumentException

if the points are equal
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Quadrant(double, double)

Returns the quadrant of a directed line segment (specified as x and y displacements, which cannot both be 0).

Declaration
public static int Quadrant(double dx, double dy)
Parameters
Type Name Description
double dx
double dy
Returns
Type Description
int
Exceptions
Type Condition
ArgumentException

If the displacements are both 0