Why is the formula for rotating 2D points LIKE THAT?? 2D rotation explained [Coding History]

Channel:

Eniko Fox

Subscribers:

2,080

Published on July 6, 2023 8:17:05 PM ● Video Link: https://www.youtube.com/watch?v=JC5IMfK7Yfw

Duration: 9:42

4,293 views

431

How do you rotate 2D points / vectors, and why does it work the way it does? Join me as I explain that sin and cos are about circles, not triangles, and why rotating everything in existence is the key to rotating a single point, in this episode of Coding History: 3D from Mode7 to DOOM.

Follow me on Mastodon: https://peoplemaking.games/@eniko
Support me on Patreon: https://www.patreon.com/sharkhugseniko
Tip me on Ko-fi: https://ko-fi.com/sharkhugseniko

Freya Holmér's "How to rotate a vector":
https://www.youtube.com/watch?v=7j5yW5QDC2U