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JuliaGeometry/Quaternions.jl: A Julia module with quaternion and dual-quaternion ...

原作者: [db:作者] 来自: 网络 收藏 邀请

开源软件名称：

JuliaGeometry/Quaternions.jl

开源软件地址：

https://github.com/JuliaGeometry/Quaternions.jl

开源编程语言：

Julia 100.0%

开源软件介绍：

Quaternions.jl

A Julia module with quaternion, octonion and dual-quaternion functionality

Stable Dev Build Status codecov

Quaternions are best known for their suitability as representations of 3D rotational orientation. They can also be viewed as an extension of complex numbers.

Implemented functions are:

+-*/^
real
imag_part  (tuple)
conj
abs
abs2
normalize
normalizea  (return normalized quaternion and absolute value as a pair)
angleaxis  (taken as an orientation, return the angle and axis (3 vector) as a tuple)
angle
axis
sqrt
exp
exp2
exp10
expm1
log2
log10
log1p
cis
cispi
sin
cos
tan
asin
acos
atan
sinh
cosh
tanh
asinh
acosh
atanh
csc
sec
cot
acsc
asec
acot
csch
sech
coth
acsch
asech
acoth
sinpi
cospi
sincos
sincospi
slerp
rand
randn

Dual quaternions are an extension, combining quaternions with dual numbers. On top of just orientation, they can represent all rigid transformations.

There are two conjugation concepts here

conj  (quaternion conjugation)
dconj (dual conjugation)

further implemented here:

Q0  (the 'real' quaternion)
Qe  ( the 'dual' part)
+-*/^
abs
abs2
normalize
normalizea
angleaxis
angle
axis
exp
log
sqrt
rand

Octonions form the logical next step on the Complex-Quaternion path. They play a role, for instance, in the mathematical foundation of String theory.

+-*/^
real
imag_part  (tuple)
conj
abs
abs2
exp
log
normalize
normalizea  (return normalized octonion and absolute value as a tuple)
exp
log
sqrt
rand
randn



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