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Author Topic: Quaternion Arithmetic Program  (Read 946 times)

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Offline Thecoder1998

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Quaternion Arithmetic Program
« on: April 18, 2015, 04:41:58 pm »
Hi guys, i'm currently learning how to program in Python and i've made a neat little script which can do arithmetic with quaternions  :)
Code: [Select]
from numpy import matrix
def quaternion(a,b,c,d):
    u = matrix('1.,0.,0.,0.;0.,1.,0.,0.;0.,0.,1.,0.;0.,0.,0.,1.')
    i = matrix('0.,1.,0.,0.;-1.,0.,0.,0.;0.,0.,0.,-1.;0.,0.,1.,0.')
    j = matrix('0.,0.,1.,0.;0.,0.,0.,1.;-1.,0.,0.,0.;0.,-1.,0.,0.')
    k = matrix('0.,0.,0.,1.;0.,0.,-1.,0.;0.,1.,0.,0.;-1.,0.,0.,0.')
    q = a*u+b*i+c*j+d*k
    return q
def printquaternion(q):
    a = q.item(0,0)
    b = q.item(0,1)
    c = q.item(0,2)
    d = q.item(0,3)
    q = "%s+%si+%sj+%sk"%(a,b,c,d)
    print q
here is a screenshot

« Last Edit: April 18, 2015, 04:43:58 pm by Thecoder1998 »

Offline Snektron

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Re: Quaternion Arithmetic Program
« Reply #1 on: April 18, 2015, 08:40:13 pm »
Maybe you could make it parse a quaterion from a string too, that would be cool
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Offline Duke "Tape" Eiyeron

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Re: Quaternion Arithmetic Program
« Reply #2 on: April 20, 2015, 04:19:32 pm »
I forgot how it's nice to print formatted strings on python as in C but easier.
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