treebolic.core
Class XMath

java.lang.Object
  treebolic.core.XMath

public class XMath
extends java.lang.Object

Encapsulation of some hyperbolic computations or conversions

Author:

Bernard Bou

Constructor Summary

XMath()

Method Summary

static double	atanh(double x) Hyperbolic arc tangence
static Complex	e2h(Complex e) Map Euclidian space to Hyperbolic space
static double	e2h(double e) Map Euclidian distance to Hyperbolic space
static Complex	h2e(Complex h) Map Hyperbolic space to Euclidian space
static double	h2e(double h) Map Hyperbolic distance to Euclidian space
static double	tanh(double x) Hyperbolic tangence

Methods inherited from class java.lang.Object

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

Constructor Detail

XMath

public XMath()

Method Detail

e2h

public static double e2h(double e)

Map Euclidian distance to Hyperbolic space

Parameters:

e - Euclidian distance

Returns:

Hyperbolic distance

h2e

public static double h2e(double h)

Map Hyperbolic distance to Euclidian space

Parameters:

h - Hyperbolic distance

Returns:

Euclidian distance

e2h

public static Complex e2h(Complex e)

Map Euclidian space to Hyperbolic space

Parameters:

e - point in Euclidian space

Returns:

this point mapped to Hyperbolic space

h2e

public static Complex h2e(Complex h)

Map Hyperbolic space to Euclidian space

Parameters:

h - point in Hyperbolic space

Returns:

this point mapped to Euclidian space

tanh

public static double tanh(double x)

Hyperbolic tangence

Parameters:

x - input

Returns:

hyperbolic tangence of x

atanh

public static double atanh(double x)

Hyperbolic arc tangence

Parameters:

x - input

Returns:

hyperbolic atan