From b94064dec5c39f30cbf3ecad668f8e51cebcee7d Mon Sep 17 00:00:00 2001
From: Nao Pross <naopross@thearcway.org>
Date: Mon, 10 Dec 2018 15:28:28 +0100
Subject: Implement vec2<T>::polar() former vec2<T>::angle()

---
 vector/vector.cpp | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/vector/vector.cpp b/vector/vector.cpp
index d5f0c36..8057cdd 100644
--- a/vector/vector.cpp
+++ b/vector/vector.cpp
@@ -1,10 +1,11 @@
 #include <iostream>
 
-#include <iterator>
 #include <cassert>
+#include <cmath>
+
 #include <array>
-#include <initializer_list>
 #include <algorithm>
+#include <initializer_list>
 
 
 template<typename T, std::size_t d>
@@ -146,10 +147,15 @@ public:
     template<std::size_t n>
     vec2(const basic_vec<T, n>& other) : basic_vec<T, 2>(other) {}
 
-    T angle();
+    T polar();
     static vec3<T> cross(const vec2<T>& rhs, const vec2<T>& lhs);
 };
 
+template<typename T>
+T vec2<T>::polar() {
+    return std::atan2(this->at(0), this->at(1));
+}
+
 template<typename T>
 vec3<T> vec2<T>::cross(const vec2<T>& rhs, const vec2<T>& lhs) {
     return vec3<T>::cross(vec3<T>(rhs), vec3<T>(lhs));
-- 
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