From e87653ab47b428321e029b40f4dd00ecbd8877fd Mon Sep 17 00:00:00 2001
From: Leonetienne <leon@etiennes.de>
Date: Sun, 14 Dec 2025 21:59:22 +0100
Subject: [PATCH] implement unary negative on vectors

---
 MotionCore/Vector3d.cpp | 5 +++++
 MotionCore/Vector3d.h   | 1 +
 2 files changed, 6 insertions(+)

diff --git a/MotionCore/Vector3d.cpp b/MotionCore/Vector3d.cpp
index b1b60fd..6f3c5ac 100755
--- a/MotionCore/Vector3d.cpp
+++ b/MotionCore/Vector3d.cpp
@@ -158,3 +158,8 @@ void Vector3d::normalize() noexcept
     y *= inv;
     z *= inv;
 }
+
+Vector3d Vector3d::operator-() const noexcept
+{
+    return Vector3d(-x, -y, -z);
+}
diff --git a/MotionCore/Vector3d.h b/MotionCore/Vector3d.h
index 84ae078..e2d3bf6 100755
--- a/MotionCore/Vector3d.h
+++ b/MotionCore/Vector3d.h
@@ -24,6 +24,7 @@ public:
     Vector3d normalized() const noexcept;
     void normalize() noexcept;
 
+    Vector3d operator-() const noexcept;
     Vector3d& operator=(const Vector3d& other) noexcept;
     Vector3d& operator=(Vector3d&& other) noexcept;