[TUTORIAL] A Gentle Primer on 2D Rotations
 
http://www.alanzucconi.com/2016/02/03/2d-rotations/

This new series will introduce rotations, translations and other affine transformations. This knowledge is essential not just for 2D games, but also to understand Quaternions and transformations in 3D games.


This first post of the series is a gentle primer on 2D rotations.


The next posts will cover the following topics:

  • Part 2. The Transformation Matrix
  • Part 3. Rotations in the Complex Plane
  • Part 4. Understanding Rotations in 2D
  • Part 5. Understanding Quaternions