Re: Rotation matrix definition

[Farzad Torabi]

dear Carlo

I don't know the expected results, I am looking to know how to calculate them. I think my doubt is here : given that I have two points on the X axis of the new CS,  I suppose that I should calculate the angles of this vector with global axis and plus the translations ( if they happened in CS transformation). but then for the rotation matrix, given that I know the first input,  how do I define the rotation order for rotation matrix ?

On Thu, Nov 21, 2019 at 10:58 AM Carlo De Falco <address@hidden> wrote:

> Il giorno 21 nov 2019, alle ore 10:38, Farzad Torabi <address@hidden> ha scritto:
>
> Adding to that, that I'm not a student,
> My doubt is about the order of rotations, given that from the new Cs, I only have the direction of one of its axes.

If you specify better what you want to do, possibly with ane example of the code you tried to write, and the results you expected, it may be easier to help.
c.

P.S. This page on wikipedia [1] has a very extensive detailed explanation of rotation matrices.

[1] https://en.wikipedia.org/wiki/Rotation_matrix#Multiplication

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SeyedFarzad Torabi

Master of Mech. Eng.

Politecnico Di Milano

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