com.revolsys.gis.model.coordinates

Class CoordinatesUtil

java.lang.Object

com.revolsys.gis.model.coordinates.CoordinatesUtil

public class CoordinatesUtil
extends Object

Constructor Summary

Constructors

Constructor and Description
CoordinatesUtil()

Method Summary

Methods

Modifier and Type	Method and Description
static Point	average(Point c1, Point c2)
static Point	circumcentre(double x1, double y1, double x2, double y2, double x3, double y3)
static int	compare(double x1, double y1, double x2, double y2)
static int	compareToOrigin(Point point1, Object other)
static int	compareToOrigin(Point point1, Point point2)
static boolean	contains(Iterable<? extends Point> points, Point point)
static double	distance3d(Point point1, Point point2) Computes the 3-dimensional Euclidean distance to another location.
static boolean	equals(double x1, double y1, double x2, double y2)
static Point	get2d(Geometry geometry)
static int	getAxisCount(Point... points)
static double	getElevation(LineString line, Point coordinate)
static double	getElevation(Point coordinate, Point c0, Point c1)
static Point	getPrecise(double scale, Point point)
static boolean	isAcute(Point point1, Point point2, Point point3)
static int	octant(double dx, double dy) Methods for computing and working with octants of the Cartesian plane Octants are numbered as follows:
static int	octant(Point p0, Point p1) Returns the octant of a directed line segment from p0 to p1.
static Point	offset(Point coordinate, double angle, double distance)
static int	orientationIndex(Point p1, Point p2, Point q)
static HCoordinate	perpendicularBisector(double x1, double y1, double x2, double y2)
static Point	pointNotInList(Iterable<? extends Point> points1, Iterable<? extends Point> points2) Return the first point of points1 not in points2
static Point	setElevation(Point newLocation, Point originalLocation)
static float[]	toFloatArray(LineString points, int axisCount)
static Point	translate(Point point, Double angle, double length)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CoordinatesUtil

public CoordinatesUtil()

Method Detail

average

public static Point average(Point c1,
            Point c2)

circumcentre

public static Point circumcentre(double x1,
                 double y1,
                 double x2,
                 double y2,
                 double x3,
                 double y3)

compare

public static int compare(double x1,
          double y1,
          double x2,
          double y2)

compareToOrigin

public static int compareToOrigin(Point point1,
                  Object other)

compareToOrigin

public static int compareToOrigin(Point point1,
                  Point point2)

contains

public static boolean contains(Iterable<? extends Point> points,
               Point point)

distance3d

public static double distance3d(Point point1,
                Point point2)

Computes the 3-dimensional Euclidean distance to another location.

Parameters:

c - a coordinate

Returns:

the 3-dimensional Euclidean distance between the locations

equals

public static boolean equals(double x1,
             double y1,
             double x2,
             double y2)

get2d

public static Point get2d(Geometry geometry)

getAxisCount

public static int getAxisCount(Point... points)

getElevation

public static double getElevation(LineString line,
                  Point coordinate)

getElevation

public static double getElevation(Point coordinate,
                  Point c0,
                  Point c1)

getPrecise

public static Point getPrecise(double scale,
               Point point)

isAcute

public static boolean isAcute(Point point1,
              Point point2,
              Point point3)

octant

public static int octant(double dx,
         double dy)

Methods for computing and working with octants of the Cartesian plane Octants are numbered as follows:

  \2|1/
 3 \|/ 0
 ---+--
 4 /|\ 7
 /5|6\

 
 If line segments lie along a coordinate axis, the octant is the lower of the two
 possible values.

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

octant

public static int octant(Point p0,
         Point p1)

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

offset

public static Point offset(Point coordinate,
           double angle,
           double distance)

orientationIndex

public static int orientationIndex(Point p1,
                   Point p2,
                   Point q)

perpendicularBisector

public static HCoordinate perpendicularBisector(double x1,
                                double y1,
                                double x2,
                                double y2)

pointNotInList

public static Point pointNotInList(Iterable<? extends Point> points1,
                   Iterable<? extends Point> points2)

Return the first point of points1 not in points2

Parameters:

points1 -

points2 -

Returns:

setElevation

public static Point setElevation(Point newLocation,
                 Point originalLocation)

toFloatArray

public static float[] toFloatArray(LineString points,
                   int axisCount)

translate

public static Point translate(Point point,
              Double angle,
              double length)