[gegl] workshop/lens-distortion: use cubic interpolation

[Ãyvind KolÃs <ok src gnome org>]

commit 9929574a00f76dd5bb55a6d194d588e87376061a
Author: Ãyvind KolÃs <pippin gimp org>
Date:   Tue Mar 27 00:21:58 2012 +0100

    workshop/lens-distortion: use cubic interpolation
    
    It was using nearest, cubic is better (should maybe pass the inverse matrix as
    well for even higher precision.)

 operations/workshop/lens-distortion.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/operations/workshop/lens-distortion.c b/operations/workshop/lens-distortion.c
index 9c20d1b..377a43c 100644
--- a/operations/workshop/lens-distortion.c
+++ b/operations/workshop/lens-distortion.c
@@ -239,7 +239,7 @@ lens_distort_func (gfloat              *src_buf,
             {
               gegl_buffer_sample (input, x, y, NULL, temp,
                                   babl_format ("RGBA float"),
-                                  GEGL_SAMPLER_NEAREST,
+                                  GEGL_SAMPLER_CUBIC,
                                   GEGL_ABYSS_NONE);
             }
           else