REVIEWED: `Vector2Angle()`

1 files changed, 3 insertions, 9 deletions

diff --git a/src/raymath.h b/src/raymath.h
index 087410ef..d7ec1d25 100644
--- a/src/raymath.h
+++ b/src/raymath.h
@@ -316,15 +316,9 @@ RMAPI float Vector2Angle(Vector2 v1, Vector2 v2)
 {
     float result = 0.0f;
     
-    float dot = v1.x*v2.x + v1.y*v2.y;              // Dot product
-    float dotClamp = (dot < -1.0f)? -1.0f : dot;    // Clamp
-    if (dotClamp > 1.0f) dotClamp = 1.0f;
-    result = acosf(dotClamp);
-
-    // Alternative implementation, more costly
-    //float v1Length = sqrtf((v1.x*v1.x) + (v1.y*v1.y));
-    //float v2Length = sqrtf((v2.x*v2.x) + (v2.y*v2.y));
-    //result = -acosf((v1.x*v2.x + v1.y*v2.y)/(v1Length*v2Length));
+    float dot = v1.x*v2.x + v1.y*v2.y;
+    float det = v1.x*v2.y - v1.y*v2.x;
+    result = -atan2f(det, dot);
     
     return result;
 }