How do I rotate a vector2d

Questions & Answers
1

Say I have a vector2d, like Vector2d.up, and I want to rotate it 30 degrees counter clockwise. Do I have to do it with Quaternions? Is there a simpler way?

2

I’d do it with Quaternions:

var newDir : Vector2D = Quaternion.AngleAxis(30.0, Vector3.forward) * Vector2D.up;