Module org.jhotdraw8.geom

Package org.jhotdraw8.geom

Class Points

java.lang.Object

org.jhotdraw8.geom.Points

public class Points
extends Object

Method Summary

Modifier and Type	Method	Description
static boolean	almostEqual(double a, double b)
static boolean	almostEqual(double a, double b, double epsilon)
static boolean	almostEqual(double x0, double y0, double x1, double y1)
static boolean	almostEqual(double x0, double y0, double x1, double y1, double epsilon)
static boolean	almostEqual(Point2D v1, Point2D v2)
static boolean	almostEqual(Point2D v1, Point2D v2, double epsilon)
static boolean	almostZero(double a)
static boolean	almostZero(double a, double epsilon)
static boolean	almostZero(Point2D.Double v)
static boolean	almostZero(Point2D.Double v, double epsilon)
static double	distance(double x1, double y1, double x2, double y2)	Computes the distance between the points (x1,y1) and (x2,y2).
static float	distanceF(double x1, double y1, double x2, double y2)	Computes the distance between the points (x1,y1) and (x2,y2) with float precision.
static double	distanceFromShape(Shape awtShape, double x, double y)	Computes the distance from the given shape to the given point.
static double	squaredDistance(double x1, double y1, double x2, double y2)	Gets the squared distance between the points (x1,y1) and (x2,y2).
static double	squaredDistanceFromShape(Shape awtShape, double x, double y)

Methods inherited from class java.lang.Object

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

Method Details

squaredDistance

public static double squaredDistance(double x1,
 double y1,
 double x2,
 double y2)

Gets the squared distance between the points (x1,y1) and (x2,y2).

Parameters:

x1 - x-coordinate of point 1

y1 - y-coordinate of point 1

x2 - x-coordinate of point 2

y2 - y-coordinate of point 2

Returns:

distance

public static double distance(double x1,
 double y1,
 double x2,
 double y2)

Computes the distance between the points (x1,y1) and (x2,y2).

Parameters:

x1 - x-coordinate of point 1

y1 - y-coordinate of point 1

x2 - x-coordinate of point 2

y2 - y-coordinate of point 2

Returns:

distanceF

public static float distanceF(double x1,
 double y1,
 double x2,
 double y2)

Computes the distance between the points (x1,y1) and (x2,y2) with float precision.

Computing the sqrt of a float is twice as fast as computing the sqrt of a double.

Parameters:

x1 - x-coordinate of point 1

y1 - y-coordinate of point 1

x2 - x-coordinate of point 2

y2 - y-coordinate of point 2

Returns:

almostEqual

public static boolean almostEqual(Point2D v1,
 Point2D v2)

almostEqual

public static boolean almostEqual(Point2D v1,
 Point2D v2,
 double epsilon)

almostEqual

public static boolean almostEqual(double x0,
 double y0,
 double x1,
 double y1)

almostEqual

public static boolean almostEqual(double x0,
 double y0,
 double x1,
 double y1,
 double epsilon)

almostZero

public static boolean almostZero(Point2D.Double v)

almostZero

public static boolean almostZero(Point2D.Double v,
 double epsilon)

almostEqual

public static boolean almostEqual(double a,
 double b)

almostEqual

public static boolean almostEqual(double a,
 double b,
 double epsilon)

almostZero

public static boolean almostZero(double a)

almostZero

public static boolean almostZero(double a,
 double epsilon)

distanceFromShape

public static double distanceFromShape(Shape awtShape,
 double x,
 double y)

Computes the distance from the given shape to the given point.

Parameters:

awtShape - a shape

x - x-coordinate of the point

y - y-coordinate of the point

Returns:

the distance

squaredDistanceFromShape

public static double squaredDistanceFromShape(Shape awtShape,
 double x,
 double y)