diff --git a/image.h b/image.h
index 09d6d90..1f9cb96 100644
--- a/image.h
+++ b/image.h
@@ -29,6 +29,34 @@ struct TPoint {
   : x(a)
   , y(b)
   {}
+
+  TPoint& operator+=(TPoint const& rhs)
+  {
+    x += rhs.x;
+    y += rhs.y;
+    return *this;
+  }
+
+  TPoint& operator-=(TPoint const& rhs)
+  {
+    x -= rhs.x;
+    y -= rhs.y;
+    return *this;
+  }
+
+  TPoint& operator*=(TPoint const& rhs)
+  {
+    x *= rhs.x;
+    y *= rhs.y;
+    return *this;
+  }
+
+  TPoint& operator/=(TPoint const& rhs)
+  {
+    x /= rhs.x;
+    y /= rhs.y;
+    return *this;
+  }
 };
 
 typedef TPoint<int> Point;
diff --git a/rotation.cpp b/rotation.cpp
index 052cfbf..e99dc0b 100644
--- a/rotation.cpp
+++ b/rotation.cpp
@@ -234,10 +234,8 @@ Image* rotate(Image const& src, double angle)
   DPoint const src_origin = get_mapped_point(*rotated, Point(0, 0), -rotation);
   DPoint src_delta_x = get_mapped_point(*rotated, Point(src.width - 1, 0), -rotation);
   DPoint src_delta_y = get_mapped_point(*rotated, Point(0, src.height - 1), -rotation);
-  src_delta_x.x = src_delta_x.x - src_origin.x;
-  src_delta_x.y = src_delta_x.y - src_origin.y;
-  src_delta_y.x = src_delta_y.x - src_origin.x;
-  src_delta_y.y = src_delta_y.y - src_origin.y;
+  src_delta_x -= src_origin;
+  src_delta_y -= src_origin;
 
   // Quantized delta
   unsigned int const q_pow = 4;
@@ -273,8 +271,7 @@ Image* rotate(Image const& src, double angle)
                      q_pow, q);
       }
 
-      src_rotated_point.x += qdx.x;
-      src_rotated_point.y += qdx.y;
+      src_rotated_point += qdx;
 
       buffer_index += rotated->pixel_size;
     }