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altos: Add functions to init quaternions from vector pairs and euler angles
author
Keith Packard
<keithp@keithp.com>
Mon, 28 Oct 2013 06:11:37 +0000
(23:11 -0700)
committer
Keith Packard
<keithp@keithp.com>
Mon, 28 Oct 2013 06:11:37 +0000
(23:11 -0700)
Our low sampling rate means that the "cheap" hack for
integrating quaternion rotations by using sin(x) ≃ x doesn't work, so
instead we have to compute the partial rotation the hard way.
Signed-off-by: Keith Packard <keithp@keithp.com>
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