rotate vector around center.

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

Answer 1

[KSSV]

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.

[Liza Marie de Wit]

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]

what do you mean by a non linear vector?