[gegl] lens-correct: Move stuff in lens-correct.h into lens-correct.c

[Mukund Sivaraman <muks src gnome org>]

commit 26a18b34bcbc9530c719e8d3e48eafb06fe8c640
Author: Mukund Sivaraman <muks banu com>
Date:   Tue Aug 30 19:54:10 2011 +0530

    lens-correct: Move stuff in lens-correct.h into lens-correct.c
    
    There's no reason this has to be in an external header.

 operations/workshop/Makefile.am    |    2 --
 operations/workshop/lens-correct.c |   26 ++++++++++++++++++++++++--
 operations/workshop/lens-correct.h |   26 --------------------------
 3 files changed, 24 insertions(+), 30 deletions(-)
---
diff --git a/operations/workshop/Makefile.am b/operations/workshop/Makefile.am
index fb204a0..42e548a 100644
--- a/operations/workshop/Makefile.am
+++ b/operations/workshop/Makefile.am
@@ -1,8 +1,6 @@
 SUBDIRS = generated external
 include $(top_srcdir)/operations/Makefile-operations.am
 
-AM_CPPFLAGS += -I$(top_srcdir)/operations/workshop
-
 # Add to Makefile.am when you move lens-correct out of the workshop, or
 # figure out how the current system works.
 
diff --git a/operations/workshop/lens-correct.c b/operations/workshop/lens-correct.c
index e77a9e4..dfb9333 100644
--- a/operations/workshop/lens-correct.c
+++ b/operations/workshop/lens-correct.c
@@ -88,10 +88,32 @@ gegl_chant_double (alpha_d, _("Model alpha d:"), 0.0, 2.0, 1.0,
 
 #include "gegl-chant.h"
 #include <math.h>
-#include "lens-correct.h"
-
 #include <stdio.h>
 
+/* Struct containing the correction parameters a,b,c,d for a lens color
+ * channel.  These parameters as the same as used in the Panotools
+ * system.  For a detailed explanation, please consult
+ * http://wiki.panotools.org/Lens_correction_model
+ *
+ * Normally a, b, and c are close to zero, and d is close to one.  Note
+ * that d is the parameter that's approximately equal to 1 - a - b - c,
+ * NOT one of the image shift parameters as used in some GUIs.
+ */
+typedef struct {
+  gfloat a, b, c, d;
+} ChannelCorrectionModel;
+
+/* Struct containing all the information required for lens correction.
+ * It includes the total size of the image plus the correction
+ * parameters for each color channel.
+ */
+typedef struct {
+  GeglRectangle BB;                               /* Bounding box of the imaged area. */
+  gfloat cx, cy;                                  /* Coordinates of lens center within the imaged area.  */
+  gfloat rscale;                                  /* Scale of the image (1/2 of the shortest side). */
+  ChannelCorrectionModel red, green, blue, alpha; /* Correction parameters for each color channel. */
+} LensCorrectionModel;
+
 static void
 make_lens (LensCorrectionModel *lens,
            GeglChantO          *o,