[Interest] Applying transformation

[Oleg Evseev]

Hi, Igor.

With all due respect, looking on your questions, it seems that you have
huge knowledge gap in linear algebra.

It would be wise to firstly read how transformations can be represented by
matrices:

https://en.wikipedia.org/wiki/Transformation_matrix
https://en.wikipedia.org/wiki/Rotation_matrix

On Russian you can start for example with https://habrahabr.ru/post/131931/
- it's about basic things.

And so on, there are dozens articles about transformations and matrices,
just google it.
Good luck!

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With regards, Oleg
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