rotate vector around center.

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Liza Marie de Wit
Liza Marie de Wit le 12 Sep 2016
Commenté : KSSV le 14 Sep 2016
Hi,
I have a non linear vector that I am trying to rotate with 2.8 degrees. In my case however I want to make the rotation around the center of my vector. Can you give me a tip on how to rotate around the center. I only found out how to rotate around the origin.
Vector is included in attachment.
Thank you! Liza

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KSSV
KSSV le 12 Sep 2016
If the center is (x,y) you first subtract (x,y) from all the coordinates, then use your rotation matrix, then add the (x,y) back to the point obtained.
  2 commentaires
Liza Marie de Wit
Liza Marie de Wit le 12 Sep 2016
Thank you. This would work for a linear vector. But it's actually about a non linear vector, see attachment. I am sorry for the non clarity!
KSSV
KSSV le 14 Sep 2016
what do you mean by a non linear vector?

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