From 49c306fcbe37539c9390399f4bebb42136fb754c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jakub=20D=C3=B3ka?= <mlokogegelmlok@gmail.com>
Date: Wed, 4 Nov 2020 21:34:42 +0100
Subject: [PATCH] cleaning angle to function

---
 geometry.go | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/geometry.go b/geometry.go
index bac34d2..97f4df8 100644
--- a/geometry.go
+++ b/geometry.go
@@ -189,8 +189,7 @@ func (u Vec) Project(v Vec) Vec {
 
 // AngleTo returns angle between u and v.
 func (u Vec) AngleTo(v Vec) float64 {
-	u, v = u.Unit(), v.Unit()
-	return math.Cos(u.Dot(v))
+	return math.Cos(u.Unit().Dot(v.Unit()))
 }
 
 // Map applies the function f to both x and y components of the vector u and returns the modified