From: Keith Packard <keithp@keithp.com>
Date: Mon, 28 Oct 2013 06:11:37 +0000 (-0700)
Subject: altos: Add functions to init quaternions from vector pairs and euler angles
X-Git-Tag: 1.2.9.4~33
X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=commitdiff_plain;h=c10cb9d31765e6ef0ba737bc484c5aed22a332f9;hp=c10cb9d31765e6ef0ba737bc484c5aed22a332f9

altos: Add functions to init quaternions from vector pairs and euler angles

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>
---