From 8febb99bf99977cda2af388ffac5a050bbbab361 Mon Sep 17 00:00:00 2001
From: Fabien Freling <public@ffreling.com>
Date: Tue, 5 Aug 2014 22:19:07 +0200
Subject: [PATCH] Use src_rotated_origin to create src_rotated_point.

---
 rotation.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/rotation.cpp b/rotation.cpp
index 0ab9efd..b241d29 100644
--- a/rotation.cpp
+++ b/rotation.cpp
@@ -341,10 +341,11 @@ Image* rotate(Image const& src, double angle)
   int const width = rotated->width;
   int const height = rotated->height;
 
+  Point src_rotated_origin(rot_origin_in_src.x * q_pos,
+                           rot_origin_in_src.y * q_pos);
   for (int y = 0; y < height; ++y)
   {
-    Point src_rotated_point((rot_origin_in_src.x * q_pos) + y * qdy.x,
-                            (rot_origin_in_src.y * q_pos) + y * qdy.y);
+    Point src_rotated_point = src_rotated_origin;
 
     for (int x = 0; x < width; ++x)
     {
@@ -360,6 +361,7 @@ Image* rotate(Image const& src, double angle)
       src_rotated_point += qdx;
       buffer_index += 1; // pixel_size
     }
+    src_rotated_origin += qdy;
   }
 
   return rotated;