Conversion between quaternions and Euler angles: Difference between revisions

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Undid revision 1128376317 by Lambiam (talk) passive vs active rotations is a technical term, and quaternion definitions across wikipedia are inconsistent. This needs to be called out
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== Quaternion to Euler angles (in 3-2-1 sequence) conversion ==
 
A direct formula for the conversion from a quaternion to Euler angles in any of the 12 possible sequences exists.<ref>{{cite journal |last1=Bernardes |first1=Evandro |last2=Viollet |first2=Stéphane |title=Quaternion to Euler angles conversion: A direct, general and computationally efficient method |journal=PLOS ONE |date=10 November 2022 |volume=17 |issue=11 |pages=e0276302 |doi=10.1371/journal.pone.0276302 |urlpmid=https://journals.plos.org/plosone/article?id36355707 |pmc=109648712 |bibcode=2022PLoSO.1371/journal.pone.02763021776302B |language=en |issn=1932-6203|doi-access=free }}</ref> For the rest of this section, the formula for the sequence '''Body 3-2-1''' will be shown.
If the quaternion is properly '''normalized''', the Euler angles can be obtained from the quaternions via the relations: