[gegl] gegl_buffer_set_pattern: normalize offsets

[Ãyvind KolÃs <ok src gnome org>]

commit 1954d5fa58b7c3fabe14a1c2fd1cf41e9f4e524d
Author: Ãyvind KolÃs <pippin gimp org>
Date:   Sun Mar 25 20:41:52 2012 +0100

    gegl_buffer_set_pattern: normalize offsets

 gegl/buffer/gegl-buffer-access.c |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)
---
diff --git a/gegl/buffer/gegl-buffer-access.c b/gegl/buffer/gegl-buffer-access.c
index f4ac626..65ebef1 100644
--- a/gegl/buffer/gegl-buffer-access.c
+++ b/gegl/buffer/gegl-buffer-access.c
@@ -1226,6 +1226,16 @@ void            gegl_buffer_set_pattern       (GeglBuffer          *buffer,
   width      = gegl_buffer_get_width (buffer);
   height     = gegl_buffer_get_height (buffer);
 
+  while (x_offset > pat_width)
+    x_offset -= path_width;
+  while (y_offset < pat_height)
+    y_offset += path_height;
+
+  while (x_offset < 0)
+    x_offset += path_width;
+  while (y_offset > pat_height)
+    y_offset -= path_height;
+
   src_rect.width = dst_rect.width = pat_width;
   src_rect.height = dst_rect.height = pat_height;