0
$\begingroup$

So I've been getting into the math behind animations in video games, specifically Quaternions; and I've noticed that when extracting Euler Angles from a Quaternion, the Yaw is limited from $-90$ to $90$ while Pitch and Roll both get a full $-180$ to $180$. Since a Quaternion can describe every rotation in $3$ dimensions, would it be correct to say that 3d objects only need $2$ and $1/2$ angles to describe them?

$\endgroup$
0
$\begingroup$

As you have probably learned, by now, there are various different ways to represent the orientation of an object in 3D space. You can use a rotation matrix, a quaternion, Euler angles, or an axis and an angle, for example. But all of these have one thing is common -- they all involve three independent numbers.

So, I would say that your "two and a half" idea is incorrect.

Euler angles are limited to some specific range to ensure that they are uniquely defined.

You can read more here or here.

$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.