From 0d9cf0f7f5c0baffb6d1f06b8f3918c6dcc72a2a Mon Sep 17 00:00:00 2001
From: herbglitch <herbglitch@protonmail.com>
Date: Sun, 19 Feb 2023 12:11:33 -0700
Subject: [PATCH] added rotation to vector2

---
 include/arc/math/vector2.h | 13 +++++++++++++
 src/math/vector2.c         |  6 ++++++
 2 files changed, 19 insertions(+)

diff --git a/include/arc/math/vector2.h b/include/arc/math/vector2.h
index 11893bf..ba98114 100644
--- a/include/arc/math/vector2.h
+++ b/include/arc/math/vector2.h
@@ -13,8 +13,21 @@ typedef struct ARC_DVector2 {
     double x, y;
 } ARC_DVector2;
 
+/**
+ * @brief normalizes a given ARC_Vector2
+ *
+ * @param vector the ARC_Vecotr2 to normallize
+*/
 void ARC_Vector2_Normalize(ARC_Vector2 *vector);
 
+/**
+ * @brief rotates a given ARC_Vector2 by a given angle in degrees
+ * 
+ * @param vector the ARC_Vector2 to rotate
+ * @param angle  the angle in degrees to rotate by
+*/
+void ARC_Vector2_RotateDegree(ARC_Vector2 *vector, float angle);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/math/vector2.c b/src/math/vector2.c
index c63bdf0..c0fdabe 100644
--- a/src/math/vector2.c
+++ b/src/math/vector2.c
@@ -5,4 +5,10 @@ void ARC_Vector2_Normalize(ARC_Vector2 *vector){
     float length = sqrtf((vector->x * vector->x) + (vector->y * vector->y));
     vector->x /= length;
     vector->y /= length;
+}
+
+void ARC_Vector2_RotateDegree(ARC_Vector2 *vector, float angle){
+    ARC_Vector2 temp = *vector;
+    vector->x = (temp.x * cos(angle)) - (temp.y * sin(angle));
+    vector->y = (temp.x * sin(angle)) + (temp.y * cos(angle));
 }
\ No newline at end of file