[gegl] illusion: use new iterator api

[Øyvind "pippin" Kolås <ok src gnome org>]

commit e99ca7c5abb5ac5a3394f15df4d66520e8425b9e
Author: Øyvind Kolås <pippin gimp org>
Date:   Mon Sep 10 16:49:05 2018 +0200

    illusion: use new iterator api

 operations/common-gpl3+/illusion.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)
---
diff --git a/operations/common-gpl3+/illusion.c b/operations/common-gpl3+/illusion.c
index a3d28c51f..10187689e 100644
--- a/operations/common-gpl3+/illusion.c
+++ b/operations/common-gpl3+/illusion.c
@@ -19,6 +19,7 @@
  *
  */
 
+#define GEGL_ITERATOR2_API
 #include "config.h"
 #include <glib/gi18n-lib.h>
 
@@ -149,7 +150,7 @@ process (GeglOperation       *operation,
   in_pixel2 = g_new (float, components);
 
   iter = gegl_buffer_iterator_new (output, result, level, format,
-                                   GEGL_ACCESS_WRITE, GEGL_ABYSS_NONE);
+                                   GEGL_ACCESS_WRITE, GEGL_ABYSS_NONE, 2);
 
   gegl_buffer_iterator_add (iter, input, result, level, format,
                             GEGL_ACCESS_READ, GEGL_ABYSS_NONE);
@@ -166,11 +167,11 @@ process (GeglOperation       *operation,
 
   while (gegl_buffer_iterator_next (iter))
     {
-       gfloat  *out_pixel = iter->data[0];
-       gfloat  *in_pixel1 = iter->data[1];
+       gfloat  *out_pixel = iter->items[0].data;
+       gfloat  *in_pixel1 = iter->items[1].data;
 
-       for (y = iter->roi[0].y; y < iter->roi[0].y + iter->roi[0].height; ++y)
-         for (x = iter->roi[0].x; x < iter->roi[0].x + iter->roi[0].width; ++x)
+       for (y = iter->items[0].roi.y; y < iter->items[0].roi.y + iter->items[0].roi.height; ++y)
+         for (x = iter->items[0].roi.x; x < iter->items[0].roi.x + iter->items[0].roi.width; ++x)
            {
               cy = ((gdouble) y - center_y) / scale;
               cx = ((gdouble) x - center_x) / scale;