From 07e80bf84759a48b46c764189846920d59ee98f1 Mon Sep 17 00:00:00 2001
From: munrocket <munrocket@pm.me>
Date: Wed, 2 Jun 2021 13:03:10 +0400
Subject: [PATCH] Optimize angle(v1, v2)

---
 src/vec3.js | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/src/vec3.js b/src/vec3.js
index d4c72dd0..98262d3d 100644
--- a/src/vec3.js
+++ b/src/vec3.js
@@ -675,9 +675,7 @@ export function angle(a, b) {
     bx = b[0],
     by = b[1],
     bz = b[2],
-    mag1 = Math.sqrt(ax * ax + ay * ay + az * az),
-    mag2 = Math.sqrt(bx * bx + by * by + bz * bz),
-    mag = mag1 * mag2,
+    mag = Math.sqrt((ax * ax + ay * ay + az * az) * (bx * bx + by * by + bz * bz)),
     cosine = mag && dot(a, b) / mag;
   return Math.acos(Math.min(Math.max(cosine, -1), 1));
 }