Quaternions

Impossible transforms are inexpressible

Motivation

How I learned to Stop Worrying and Love Quaternions

Animate your way to glory

Background

Wikipedia: Quaternion

Euler angles

Wikipedia: Conersion between quaternions and Euler angles

Uses

Spatial rotation

Wikipedia: Quaternions and spatial rotation

Flight dynamics

USE OF QUATERNIONS IN FLIGHT MECHANICS

NPSNET: FLIGHT SIMULATION DYNAMIC MODELING USING QUATERNIONS

Device orientation

W3C DeviceOrientation Event Specification

Practical Application and Usage of the W3C Device Orientation API

References

Euclidean Space: Quaternions

3D Game Engine Programming: Understanding Quaternions

@BrettHoutz paper on Quaternions

Quaternions in Classical Mechanics