From: jaspervdg <jaspervdg@users.sourceforge.net>
Date: Wed, 13 May 2009 16:08:45 +0000 (+0000)
Subject: (Very) small fix for FilterConvolveMatrix::area_enlarge
X-Git-Url: https://git.tokkee.org/?a=commitdiff_plain;h=1cea94159d3f22bfc9b3289132fea3ce50d803bf;p=inkscape.git

(Very) small fix for FilterConvolveMatrix::area_enlarge
---

diff --git a/src/display/nr-filter-convolve-matrix.cpp b/src/display/nr-filter-convolve-matrix.cpp
index 0fd46202e..e9f7e7dfe 100644
--- a/src/display/nr-filter-convolve-matrix.cpp
+++ b/src/display/nr-filter-convolve-matrix.cpp
@@ -252,8 +252,8 @@ void FilterConvolveMatrix::area_enlarge(NRRectL &area, Geom::Matrix const &/*tra
     // some spurious pixels may still appear at the borders when low zooming or rotating. Needs a better fix.
     area.x0 -= targetX;
     area.y0 -= targetY;
-    area.x1 += orderX - targetX;
-    area.y1 += orderY - targetY;
+    area.x1 += orderX - targetX - 1; // This makes sure the last row/column in the original image corresponds to the last row/column in the new image that can be convolved without adjusting the boundary conditions).
+    area.y1 += orderY - targetY - 1;
 }
 
 FilterTraits FilterConvolveMatrix::get_input_traits() {