treebolic.core
Class HyperRotation

java.lang.Object
  treebolic.core.Complex
      treebolic.core.HyperRotation

public class HyperRotation
extends Complex

Rotation in hyperbolic space

Author:

Bernard Bou

Field Summary

Fields inherited from class treebolic.core.Complex

EAST, im, NORTH, ONE, re, SOUTH, WEST, ZERO

Constructor Summary

HyperRotation()
Defaut constructor

HyperRotation(Complex z)
Constructor from rotation expressed in cartesian value relative to (0,0) origin and x-axis

HyperRotation(double x, double y)
Constructor from rotation expressed in cartesian value relative to (0,0) origin and x-axis

Method Summary

static HyperTransform	compose(HyperRotation r1, HyperTranslation t2) Compose rotation with translation
HyperRotation	inverse() Reverse
Complex	map(Complex z) Rotate point
static Complex	map(Complex z, Complex thisAngle) Rotate point
Complex	toComplex() Convert to complex expressing rotation as cartesian value relative to (0,0) origin and x-axis

Methods inherited from class treebolic.core.Complex

abs2, add, add, arg, conj, conj, div, div, divide, divide, equals, mag, makeFromArg, makeFromArgAbs, mul, mul, multiply, multiply, neg, neg, normalize, onediv, set, set, sub, sub, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

HyperRotation

public HyperRotation()

Defaut constructor

HyperRotation

public HyperRotation(Complex z)

Constructor from rotation expressed in cartesian value relative to (0,0) origin and x-axis

Parameters:

z - rotation expressed as cartesian value

HyperRotation

public HyperRotation(double x,
                     double y)

Constructor from rotation expressed in cartesian value relative to (0,0) origin and x-axis

Parameters:

x - x-coordinate of point expressing rotation expressed as cartesian value

y - y-coordinate of point expressing rotation expressed as cartesian value

Method Detail

toComplex

public Complex toComplex()

Convert to complex expressing rotation as cartesian value relative to (0,0) origin and x-axis

Returns:

return complex expressing in cartesian value

map

public static Complex map(Complex z,
                          Complex thisAngle)

Rotate point

Parameters:

z - input point

thisAngle - rotation angle

Returns:

this point with rotated values

map

public Complex map(Complex z)

Rotate point

Parameters:

z - point

Returns:

rotated point

compose

public static HyperTransform compose(HyperRotation r1,
                                     HyperTranslation t2)

Compose rotation with translation

Parameters:

r1 - rotation

t2 - translation

Returns:

transform

inverse

public HyperRotation inverse()

Reverse

Returns:

this rotation with reversed values