[gegl: 18/25] comments

[Nicolas Robidoux <nrobidoux src gnome org>]

commit 32c2a75e17dab63945c4370547f895706dd3095c
Author: Nicolas Robidoux <nrobidoux git gnome org>
Date:   Sat Nov 24 09:51:50 2012 -0500

    comments

 gegl/buffer/gegl-sampler-cubic.c      |   11 ++++++-----
 gegl/buffer/gegl-sampler-linear.c     |    3 +++
 operations/transform/transform-core.c |    7 ++++++-
 3 files changed, 15 insertions(+), 6 deletions(-)
---
diff --git a/gegl/buffer/gegl-sampler-cubic.c b/gegl/buffer/gegl-sampler-cubic.c
index 20d58b2..e4eff69 100644
--- a/gegl/buffer/gegl-sampler-cubic.c
+++ b/gegl/buffer/gegl-sampler-cubic.c
@@ -13,7 +13,8 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with GEGL; if not, see <http://www.gnu.org/licenses/>.
  *
- * 2012 (c) Nicolas Robidoux based on earlier code
+ * Copyright 2012 Nicolas Robidoux based on earlier code
+ *           2012 Massimo Valentini
  */
 
 #include "config.h"
@@ -276,11 +277,11 @@ cubicKernel (const gfloat  x,
   const gfloat ax = ( x<(gfloat) 0. ? -x : x );
 
   if (x2 <= (gfloat) 1.) return ( (gfloat) ((12-9*b-6*c)/6) * ax +
-				  (gfloat) ((-18+12*b+6*c)/6) ) * x2 +
-			        (gfloat) ((6-2*b)/6);
-  
+                                  (gfloat) ((-18+12*b+6*c)/6) ) * x2 +
+                                (gfloat) ((6-2*b)/6);
+
   if (x2 < (gfloat) 4.) return ( (gfloat) ((-b-6*c)/6) * ax +
-				 (gfloat) ((6*b+30*c)/6) ) * x2 +
+                                 (gfloat) ((6*b+30*c)/6) ) * x2 +
                                (gfloat) ((-12*b-48*c)/6) * ax +
                                (gfloat) ((8*b+24*c)/6);
 
diff --git a/gegl/buffer/gegl-sampler-linear.c b/gegl/buffer/gegl-sampler-linear.c
index a1d875d..9882e20 100644
--- a/gegl/buffer/gegl-sampler-linear.c
+++ b/gegl/buffer/gegl-sampler-linear.c
@@ -13,6 +13,9 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with GEGL; if not, see
  * <http://www.gnu.org/licenses/>.
+ *
+ * Copyright 2011-2012 Nicolas Robidoux based on earlier code
+ *           2012      Massimo Valentini
  */
 
 #include "config.h"
diff --git a/operations/transform/transform-core.c b/operations/transform/transform-core.c
index 50e4ab2..849fc91 100644
--- a/operations/transform/transform-core.c
+++ b/operations/transform/transform-core.c
@@ -465,6 +465,12 @@ gegl_transform_get_bounding_box (GeglOperation *op)
 {
   OpTransform   *transform  = OP_TRANSFORM (op);
   GeglMatrix3    matrix;
+  /*
+   * This was changed from the earlier {0,0,0,0}. However, in_rect is
+   * enlarged by one less than the width and height of context_rect
+   * when it was enlarged by the full number in earlier versions of
+   * this code.
+   */
   GeglRectangle  in_rect = {0,0,1,1},
                  have_rect;
   gdouble        have_points [8];
@@ -494,7 +500,6 @@ gegl_transform_get_bounding_box (GeglOperation *op)
       /*
        * Is in_rect = {0,0,0,0} (the empty rectangle with no point in
        * it, since width=height=0) used to communicate something?
-       * Otherwise, I'd initialize to {0,0,1,1} and put "-1"s below.
        */
       return in_rect;
     }