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Product features · Hamilton quaternion multiplication
01
Review quaternion.py with the scalar-first component convention visible before comparing multiplication order.
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Hamilton quaternion multiplication
● ● ●Quaterelle●
A concrete starting point · Hamilton quaternion multiplication ×
import math
def quaternion_product(a, b):
for q in (a, b):
if type(q) not in (list, tuple) or len(q) != 4:
raise ValueError("quaternion.shape")
if any(type(x) not in (int, float) or not -10**6 <= x <= 10**6 or not math.isfinite(x) for x in q):
raise ValueError("quaternion.value")
w, x, y, z = a
v, i, j, k = b
return (w*v-x*i-y*j-z*k, w*i+x*v+y*k-z*j,
w*j-x*k+y*v+z*i, w*k+x*j-y*i+z*v)
✳Hamilton quaternion multiplication
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