From 225b4fb3e2503d97a53d3aa746ddac3648cfebd8 Mon Sep 17 00:00:00 2001 From: Ray Date: Tue, 4 Jul 2023 16:58:43 +0200 Subject: REVIEWED: `Vector2Angle()` --- src/raymath.h | 12 +++--------- 1 file changed, 3 insertions(+), 9 deletions(-) (limited to 'src/raymath.h') 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; } -- cgit v1.2.3