Quaternion conjugate?/inverse?
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Nexii Malthus
my quats maths is uh weak so feel free to correct me, but to do a inverse of a quaternion I would have expected the unmary operator to do that, however it negates all parts, instead of only negating the vector parts (x, y, z)
Could this be changed to be a conjugation operator instead perhaps?
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Harold Linden
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I can't see any other implementations of quaternions that overload
-
in this way.IMO there's a case for providing conjugation, but being explicit makes the most sense, and we should have a function for it!
Frio Belmonte
Negation is valid, even if rarely used for quaternions so overloading unary minus would feel off.
In SL ZERO_ROTATION/q actually produces the conjugate, but only because the rotation division operator assumes normalized quats (actual quat division q/p = q*conj(p)/|p| but SL skips the /|p| part, so 1/q = conj(q))... rather hacky, access to a proper conjugation method might have uses.
Nexii Malthus
Ah, it does the same in LSL legacy right now but food for thought