/* !!!! AUTOGENERATED FILE generated by blend.rb !!!!!
*
* This file is an image processing operation for GEGL
*
* GEGL is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* GEGL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* 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 2006 Øyvind Kolås <pippin@gimp.org>
*
* The formulas used for the blend modes are from:
* http://www.pegtop.net/delphi/articles/blendmodes/
*
* !!!! AUTOGENERATED FILE !!!!!
*/
#include "config.h"
#include <glib/gi18n-lib.h>
#ifdef GEGL_CHANT_PROPERTIES
/* no properties */
#else
#define GEGL_CHANT_TYPE_POINT_COMPOSER
#define GEGL_CHANT_C_FILE "blend-reflect.c"
#include "gegl-chant.h"
#include <math.h>
static void prepare (GeglOperation *self)
{
const Babl *format = babl_format ("RaGaBaA float");
gegl_operation_set_format (self, "input", format);
gegl_operation_set_format (self, "aux", format);
gegl_operation_set_format (self, "output", format);
}
static gboolean
process (GeglOperation *op,
void *in_buf,
void *aux_buf,
void *out_buf,
glong n_pixels,
const GeglRectangle *roi,
gint level)
{
gfloat *in = in_buf;
gfloat *aux = aux_buf;
gfloat *out = out_buf;
gint i;
if (aux == NULL)
return TRUE;
for (i = 0; i < n_pixels; i++)
{
gfloat aA, aB;
gint j;
aA = in[3];
aB = aux[3];
for (j = 0; j < 3; j++)
{
gfloat cA, cB;
cA = in[j];
cB = aux[j];
out[j] = cA + (cB>=1.0?1.0:cA*cA / (1.0-cB)-cA) * cB;
}
out[j] = aA;
in += 4;
aux += 4;
out += 4;
}
return TRUE;
}
static void
gegl_chant_class_init (GeglChantClass *klass)
{
GeglOperationClass *operation_class;
GeglOperationPointComposerClass *point_composer_class;
operation_class = GEGL_OPERATION_CLASS (klass);
point_composer_class = GEGL_OPERATION_POINT_COMPOSER_CLASS (klass);
point_composer_class->process = process;
operation_class->prepare = prepare;
gegl_operation_class_set_keys (operation_class,
"name" , "gegl:blend-reflect",
"categories" , "compositors:blend",
"description" ,
_("Image blending operation 'blend-reflect' (<tt>c = cB>=1.0?1.0:cA*cA / (1.0-cB)</tt>)"),
NULL);
}
#endif