Yaw, Pitch and Roll to vectorDir and vectorUp

Question

I have yaw, pitch and roll from an object and i need to transform it into vectorDir and vectorUp. Someone an idea of how to do it?

`roll` shouldn't contribute to direction, so draw your object on a piece of paper, mark the angles from the neutral/zero direction and have a look at how this turns into a circle. Then you should be able to figure it out. The `up` vector is a bit trickier. — HonkyTonk, Aug 15 '12 at 11:52
thank you, ive got the solution for vectorDir! But im still working on the vectorUp :/ — Hennaldo, Aug 15 '12 at 11:56
Yes, the question is indeed somewhat vague and incomplete but it can be answered (I did). Closing the question is enough, there is absolutely no need for the downvote. — Ali, Aug 15 '12 at 12:55

score 0 · Accepted Answer · edited May 23 '17 at 11:56

I would convert the Euler angles (yaw, pitch and roll) into a rotation matrix M. Follow this answer for example.

It is not 100% clear what you need but you it is one of the followings.

You get vectorDir by multiplying the column vector x=[1,0,0] by either M or its transpose.

You get vectorUp by multiplying the column vector z=[0,0,1] by either M or its transpose.

Note. Euler angles are evil, they screw up the stability of your app, see for example

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