From a315509189073cdaf4172bcfd4e4a54e5c8c87eb Mon Sep 17 00:00:00 2001
From: Matthew Kosarek <matthew.kosarek@vention.cc>
Date: Tue, 2 Mar 2021 20:03:02 -0500
Subject: Updated stylings and very nearly have square collisions complete and
 proper

---
 frontend/_shared/math/vec2.js | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'frontend/_shared/math/vec2.js')

diff --git a/frontend/_shared/math/vec2.js b/frontend/_shared/math/vec2.js
index cff38ce..11e71cd 100644
--- a/frontend/_shared/math/vec2.js
+++ b/frontend/_shared/math/vec2.js
@@ -53,4 +53,12 @@ function negate2(v) {
         x: -v.x,
         y: -v.y
     };
+}
+
+// Algorithm plucked from: https://matthew-brett.github.io/teaching/rotation_2d.html
+function rotateAboutOrigin2(v, angle) {
+    return {
+        x: v.x * Math.cos(angle) - v.y * Math.sin(angle),
+        y: v.x * Math.sin(angle) + v.y * Math.cos(angle),
+    };
 }
\ No newline at end of file
-- 
cgit v1.2.1