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quadrant(double, double): int
quadrant(Coordinate, Coordinate): int
isOpposite(int, int): boolean
commonHalfPlane(int, int): int
isInHalfPlane(int, int): boolean
isNorthern(int): boolean
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Source Classic

Class Quadrant

Hierarchy: Object , Quadrant
public class Quadrant
Utility functions for working with quadrants, which are numbered as follows: 
 1 | 0
 --+--
 2 | 3

Other

  • version: 1.7
public static int quadrant(double dx, double dy)
Returns the quadrant of a directed line segment (specified as x and y displacements, which cannot both be 0).
Throws:
IllegalArgumentException - IllegalArgumentException if the displacements are both 0
public static int quadrant(Coordinate p0, Coordinate p1)
Returns the quadrant of a directed line segment from p0 to p1.
Throws:
IllegalArgumentException - IllegalArgumentException if the points are equal
public static boolean isOpposite(int quad1, int quad2)
Returns true if the quadrants are 1 and 3, or 2 and 4
public static int commonHalfPlane(int quad1, int quad2)
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.
public static boolean isInHalfPlane(int quad, int halfPlane)
Returns whether the given quadrant lies within the given halfplane (specified by its right-hand quadrant).
public static boolean isNorthern(int quad)
Returns true if the given quadrant is 0 or 1.