From 47f0263ca3c8c9fdff230995335f45ec87cd0282 Mon Sep 17 00:00:00 2001
From: Dmitry Marakasov <amdmi3@amdmi3.ru>
Date: Fri, 3 Jul 2015 22:21:02 +0300
Subject: [PATCH] Add unary minus operator for Point

---
 SDL2pp/Point.cc | 4 ++++
 SDL2pp/Point.hh | 8 ++++++++
 2 files changed, 12 insertions(+)

diff --git a/SDL2pp/Point.cc b/SDL2pp/Point.cc
index 5ed4146..1a24745 100644
--- a/SDL2pp/Point.cc
+++ b/SDL2pp/Point.cc
@@ -66,6 +66,10 @@ Point& Point::SetY(int ny) {
 	return *this;
 }
 
+Point Point::operator-() const {
+	return Point(-x, -y);
+}
+
 Point Point::operator+(const Point& other) const {
 	return Point(x + other.x, y + other.y);
 }
diff --git a/SDL2pp/Point.hh b/SDL2pp/Point.hh
index bae5ba6..bce691f 100644
--- a/SDL2pp/Point.hh
+++ b/SDL2pp/Point.hh
@@ -156,6 +156,14 @@ public:
 	////////////////////////////////////////////////////////////
 	Point& SetY(int ny);
 
+	////////////////////////////////////////////////////////////
+	/// \brief Get point's memberwise negation
+	///
+	/// \returns New Point representing memberwise negation
+	///
+	////////////////////////////////////////////////////////////
+	Point operator-() const;
+
 	////////////////////////////////////////////////////////////
 	/// \brief Get point's memberwise addition with another point
 	///