2006-12-10 05:33:38 +08:00
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/* GIMP - The GNU Image Manipulation Program
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1997-11-25 06:05:25 +08:00
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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2009-01-18 06:28:01 +08:00
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* This program is free software: you can redistribute it and/or modify
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1997-11-25 06:05:25 +08:00
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* it under the terms of the GNU General Public License as published by
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2009-01-18 06:28:01 +08:00
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* the Free Software Foundation; either version 3 of the License, or
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1997-11-25 06:05:25 +08:00
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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2009-01-18 06:28:01 +08:00
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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1997-11-25 06:05:25 +08:00
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*/
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2000-12-15 23:54:17 +08:00
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app/appenv.h New file. Includes <math.h>. Move G_PI, RINT(), ROUND() etc
1999-09-01 Tor Lillqvist <tml@iki.fi>
* app/appenv.h
* libgimp/gimpmath.h: New file. Includes <math.h>. Move G_PI,
RINT(), ROUND() etc from app/appenv.h here, so plug-ins can
use them, too. Remove some commented-out old stuff in appenv.h.
* libgimp/gimp.h: Include gimpmath.h.
* libgimp/gimp.c (gimp_main): Win32: Don't install signal
handlers, we can't do anything useful in the handler ourselves
anyway (it would be nice to print out a backtrace, but that seems
pretty hard to do, even if not impossible). Let Windows inform the
user about the crash. If the plug-in was compiled with MSVC, and
the user also has it, she is offered a chance to start the
debugger automatically anyway.
* app/*several*.c: Include gimpmath.h for G_PI etc. Don't include
<math.h>, as gimpmath.h includes it.
* plug-ins/*/*many*.c: Include config.h. Don't include <math.h>.
Remove all the duplicated definitions of G_PI and rint(). Use
RINT() instead of rint().
* app/app_procs.[ch]: app_exit() takes a gboolean.
* app/batch.c
* app/commands.c
* app/interface.c: Call app_exit() with FALSE or TRUE.
* app/main.c (on_error): Call gimp_fatal_error. (main): Don't
install any signal handler on Win32 here, either.
* app/errors.c (gimp_fatal_error, gimp_terminate): Win32: Format
the message and call MessageBox with it. g_on_error_query doesn't
do anything useful on Win32, and printf'ing a message to stdout or
stderr doesn't do anything, either, in a windowing application.
1999-09-02 04:30:56 +08:00
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#include "config.h"
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2009-10-10 21:46:31 +08:00
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#include <string.h>
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2008-10-10 04:24:04 +08:00
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#include <gegl.h>
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1997-11-25 06:05:25 +08:00
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2006-08-29 22:46:32 +08:00
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#include "libgimpbase/gimpbase.h"
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2007-03-09 21:00:01 +08:00
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#include "libgimpmath/gimpmath.h"
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2006-08-29 22:46:32 +08:00
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2003-09-04 20:18:40 +08:00
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#include "core-types.h"
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2002-08-20 18:22:23 +08:00
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2012-03-21 10:57:53 +08:00
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#include "gegl/gimp-gegl-utils.h"
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2003-09-04 20:18:40 +08:00
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#include "gimpchannel.h"
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#include "gimpchannel-combine.h"
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1997-11-25 06:05:25 +08:00
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void
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2002-03-19 00:22:14 +08:00
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gimp_channel_combine_rect (GimpChannel *mask,
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2006-04-12 20:49:29 +08:00
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GimpChannelOps op,
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gint x,
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gint y,
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gint w,
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gint h)
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1997-11-25 06:05:25 +08:00
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{
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2012-03-16 05:58:26 +08:00
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GeglColor *color;
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1999-08-22 19:45:31 +08:00
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2001-08-11 22:39:19 +08:00
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g_return_if_fail (GIMP_IS_CHANNEL (mask));
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2005-09-07 18:08:02 +08:00
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if (! gimp_rectangle_intersect (x, y, w, h,
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0, 0,
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2008-11-03 08:09:01 +08:00
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gimp_item_get_width (GIMP_ITEM (mask)),
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gimp_item_get_height (GIMP_ITEM (mask)),
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2005-09-07 18:08:02 +08:00
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&x, &y, &w, &h))
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1997-11-25 06:05:25 +08:00
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return;
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2002-03-19 00:22:14 +08:00
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if (op == GIMP_CHANNEL_OP_ADD || op == GIMP_CHANNEL_OP_REPLACE)
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2012-03-16 05:58:26 +08:00
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color = gegl_color_new ("#fff");
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1999-04-09 14:00:11 +08:00
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else
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2012-03-16 05:58:26 +08:00
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color = gegl_color_new ("#000");
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2012-03-21 07:42:44 +08:00
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gegl_buffer_set_color (gimp_drawable_get_buffer (GIMP_DRAWABLE (mask)),
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2012-04-02 21:19:47 +08:00
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GEGL_RECTANGLE (x, y, w, h), color);
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2012-03-16 05:58:26 +08:00
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g_object_unref (color);
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1997-11-25 06:05:25 +08:00
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/* Determine new boundary */
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2009-10-11 05:01:59 +08:00
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if (mask->bounds_known && (op == GIMP_CHANNEL_OP_ADD) && ! mask->empty)
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1997-11-25 06:05:25 +08:00
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{
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if (x < mask->x1)
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2006-04-12 20:49:29 +08:00
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mask->x1 = x;
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1997-11-25 06:05:25 +08:00
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if (y < mask->y1)
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2006-04-12 20:49:29 +08:00
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mask->y1 = y;
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1997-11-25 06:05:25 +08:00
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if ((x + w) > mask->x2)
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2006-04-12 20:49:29 +08:00
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mask->x2 = (x + w);
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1997-11-25 06:05:25 +08:00
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if ((y + h) > mask->y2)
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2006-04-12 20:49:29 +08:00
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mask->y2 = (y + h);
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1997-11-25 06:05:25 +08:00
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}
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2002-03-19 00:22:14 +08:00
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else if (op == GIMP_CHANNEL_OP_REPLACE || mask->empty)
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1997-11-25 06:05:25 +08:00
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{
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mask->empty = FALSE;
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2002-08-30 00:48:17 +08:00
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mask->x1 = x;
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mask->y1 = y;
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mask->x2 = x + w;
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mask->y2 = y + h;
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1997-11-25 06:05:25 +08:00
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}
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else
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2009-10-10 21:46:31 +08:00
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{
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mask->bounds_known = FALSE;
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}
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1997-11-25 06:05:25 +08:00
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2008-11-03 08:09:01 +08:00
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mask->x1 = CLAMP (mask->x1, 0, gimp_item_get_width (GIMP_ITEM (mask)));
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mask->y1 = CLAMP (mask->y1, 0, gimp_item_get_height (GIMP_ITEM (mask)));
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mask->x2 = CLAMP (mask->x2, 0, gimp_item_get_width (GIMP_ITEM (mask)));
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mask->y2 = CLAMP (mask->y2, 0, gimp_item_get_height (GIMP_ITEM (mask)));
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2003-10-06 20:17:11 +08:00
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gimp_drawable_update (GIMP_DRAWABLE (mask), x, y, w, h);
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1997-11-25 06:05:25 +08:00
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}
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2004-07-19 03:31:29 +08:00
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/**
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* gimp_channel_combine_ellipse:
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* @mask: the channel with which to combine the ellipse
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2004-07-19 22:25:59 +08:00
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* @op: whether to replace, add to, or subtract from the current
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* contents
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2004-07-19 03:31:29 +08:00
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* @x: x coordinate of upper left corner of ellipse
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* @y: y coordinate of upper left corner of ellipse
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* @w: width of ellipse bounding box
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* @h: height of ellipse bounding box
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* @antialias: if %TRUE, antialias the ellipse
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*
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2004-07-19 22:25:59 +08:00
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* Mainly used for elliptical selections. If @op is
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* %GIMP_CHANNEL_OP_REPLACE or %GIMP_CHANNEL_OP_ADD, sets pixels
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* within the ellipse to 255. If @op is %GIMP_CHANNEL_OP_SUBTRACT,
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* sets pixels within to zero. If @antialias is %TRUE, pixels that
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* impinge on the edge of the ellipse are set to intermediate values,
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* depending on how much they overlap.
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2004-07-19 03:31:29 +08:00
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**/
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1997-11-25 06:05:25 +08:00
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void
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2002-03-19 00:22:14 +08:00
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gimp_channel_combine_ellipse (GimpChannel *mask,
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2004-07-19 03:31:29 +08:00
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GimpChannelOps op,
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gint x,
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gint y,
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gint w,
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gint h,
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gboolean antialias)
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1997-11-25 06:05:25 +08:00
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{
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2006-10-19 02:54:28 +08:00
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gimp_channel_combine_ellipse_rect (mask, op, x, y, w, h,
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w / 2.0, h / 2.0, antialias);
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}
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2009-10-11 05:01:59 +08:00
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static void
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gimp_channel_combine_span (guchar *data,
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2009-10-11 19:49:14 +08:00
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GimpChannelOps op,
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gint x1,
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gint x2,
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gint value)
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2006-10-19 02:54:28 +08:00
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{
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2009-10-11 05:01:59 +08:00
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if (x2 <= x1)
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return;
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2006-10-19 02:54:28 +08:00
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switch (op)
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{
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case GIMP_CHANNEL_OP_ADD:
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case GIMP_CHANNEL_OP_REPLACE:
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2009-10-11 05:01:59 +08:00
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if (value == 255)
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{
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memset (data + x1, 255, x2 - x1);
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}
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else
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{
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while (x1 < x2)
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{
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const guint val = data[x1] + value;
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data[x1++] = val > 255 ? 255 : val;
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}
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}
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2006-10-19 02:54:28 +08:00
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break;
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case GIMP_CHANNEL_OP_SUBTRACT:
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2009-10-11 05:01:59 +08:00
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if (value == 255)
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{
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memset (data + x1, 0, x2 - x1);
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}
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else
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{
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while (x1 < x2)
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{
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const gint val = data[x1] - value;
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data[x1++] = val > 0 ? val : 0;
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}
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}
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2006-10-19 02:54:28 +08:00
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break;
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case GIMP_CHANNEL_OP_INTERSECT:
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2009-10-10 21:46:31 +08:00
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/* Should not happen */
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2006-10-19 02:54:28 +08:00
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break;
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}
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}
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/**
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* gimp_channel_combine_ellipse_rect:
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* @mask: the channel with which to combine the elliptic rect
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* @op: whether to replace, add to, or subtract from the current
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* contents
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* @x: x coordinate of upper left corner of bounding rect
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* @y: y coordinate of upper left corner of bounding rect
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* @w: width of bounding rect
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* @h: height of bounding rect
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* @a: elliptic a-constant applied to corners
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* @b: elliptic b-constant applied to corners
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* @antialias: if %TRUE, antialias the elliptic corners
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*
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* Used for rounded cornered rectangles and ellipses. If @op is
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* %GIMP_CHANNEL_OP_REPLACE or %GIMP_CHANNEL_OP_ADD, sets pixels
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* within the ellipse to 255. If @op is %GIMP_CHANNEL_OP_SUBTRACT,
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* sets pixels within to zero. If @antialias is %TRUE, pixels that
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* impinge on the edge of the ellipse are set to intermediate values,
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* depending on how much they overlap.
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**/
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void
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gimp_channel_combine_ellipse_rect (GimpChannel *mask,
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GimpChannelOps op,
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gint x,
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gint y,
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gint w,
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gint h,
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gdouble a,
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gdouble b,
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gboolean antialias)
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{
|
2012-03-17 19:45:58 +08:00
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GeglBuffer *buffer;
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GeglBufferIterator *iter;
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GeglRectangle *roi;
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gint bpp;
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gdouble a_sqr;
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gdouble b_sqr;
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gdouble ellipse_center_x;
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gint x0, y0;
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gint width, height;
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1997-11-25 06:05:25 +08:00
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2001-08-11 22:39:19 +08:00
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g_return_if_fail (GIMP_IS_CHANNEL (mask));
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2006-10-19 02:54:28 +08:00
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g_return_if_fail (a >= 0.0 && b >= 0.0);
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2009-10-11 05:01:59 +08:00
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g_return_if_fail (op != GIMP_CHANNEL_OP_INTERSECT);
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1997-11-25 06:05:25 +08:00
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2006-10-19 02:54:28 +08:00
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/* Make sure the elliptic corners fit into the rect */
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a = MIN (a, w / 2.0);
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b = MIN (b, h / 2.0);
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2004-07-19 22:25:59 +08:00
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a_sqr = SQR (a);
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b_sqr = SQR (b);
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2004-07-19 22:12:30 +08:00
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2009-10-11 05:01:59 +08:00
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if (! gimp_rectangle_intersect (x, y, w, h,
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0, 0,
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gimp_item_get_width (GIMP_ITEM (mask)),
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gimp_item_get_height (GIMP_ITEM (mask)),
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&x0, &y0, &width, &height))
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return;
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2004-07-19 03:31:29 +08:00
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2009-10-11 05:01:59 +08:00
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ellipse_center_x = x + a;
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2006-10-19 02:54:28 +08:00
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2012-03-21 07:42:44 +08:00
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buffer = gimp_drawable_get_buffer (GIMP_DRAWABLE (mask));
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2012-03-17 19:45:58 +08:00
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2012-03-21 10:57:53 +08:00
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iter = gegl_buffer_iterator_new (buffer,
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2012-04-02 21:19:47 +08:00
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GEGL_RECTANGLE (x0, y0, width, height), 0,
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2012-03-27 01:30:30 +08:00
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babl_format ("Y u8"), GEGL_BUFFER_READWRITE,
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GEGL_ABYSS_NONE);
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2012-03-17 19:45:58 +08:00
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roi = &iter->roi[0];
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bpp = 1;
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2006-10-19 02:54:28 +08:00
|
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2012-03-17 19:45:58 +08:00
|
|
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while (gegl_buffer_iterator_next (iter))
|
2009-10-11 05:01:59 +08:00
|
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{
|
2012-03-17 19:45:58 +08:00
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guchar *data = iter->data[0];
|
2009-10-11 05:01:59 +08:00
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gint py;
|
2006-10-19 02:54:28 +08:00
|
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|
2012-03-17 19:45:58 +08:00
|
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for (py = roi->y;
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py < roi->y + roi->height;
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py++, data += roi->width * bpp)
|
2006-10-19 02:54:28 +08:00
|
|
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{
|
2012-03-17 19:45:58 +08:00
|
|
|
const gint px = roi->x;
|
2009-10-11 05:01:59 +08:00
|
|
|
gdouble ellipse_center_y;
|
2006-10-19 02:54:28 +08:00
|
|
|
|
2009-10-11 05:01:59 +08:00
|
|
|
if (py >= y + b && py < y + h - b)
|
|
|
|
{
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|
|
|
/* we are on a row without rounded corners */
|
2012-03-17 19:45:58 +08:00
|
|
|
gimp_channel_combine_span (data, op, 0, roi->width, 255);
|
2009-10-11 05:01:59 +08:00
|
|
|
continue;
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|
|
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}
|
2006-10-19 02:54:28 +08:00
|
|
|
|
2009-10-11 05:01:59 +08:00
|
|
|
/* Match the ellipse center y with our current y */
|
|
|
|
if (py < y + b)
|
|
|
|
{
|
|
|
|
ellipse_center_y = y + b;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
ellipse_center_y = y + h - b;
|
|
|
|
}
|
2006-10-19 02:54:28 +08:00
|
|
|
|
2009-10-11 05:01:59 +08:00
|
|
|
/* For a non-antialiased ellipse, use the normal equation
|
|
|
|
* for an ellipse with an arbitrary center
|
|
|
|
* (ellipse_center_x, ellipse_center_y).
|
2006-10-19 02:54:28 +08:00
|
|
|
*/
|
2009-10-11 05:01:59 +08:00
|
|
|
if (! antialias)
|
|
|
|
{
|
|
|
|
gdouble half_ellipse_width_at_y;
|
|
|
|
gint x_start;
|
|
|
|
gint x_end;
|
2006-10-19 02:54:28 +08:00
|
|
|
|
2009-10-11 05:01:59 +08:00
|
|
|
half_ellipse_width_at_y =
|
|
|
|
sqrt (a_sqr -
|
|
|
|
a_sqr * SQR (py + 0.5f - ellipse_center_y) / b_sqr);
|
2006-10-19 02:54:28 +08:00
|
|
|
|
2009-10-11 05:01:59 +08:00
|
|
|
x_start = ROUND (ellipse_center_x - half_ellipse_width_at_y);
|
|
|
|
x_end = ROUND (ellipse_center_x + w - 2 * a +
|
|
|
|
half_ellipse_width_at_y);
|
2006-10-19 02:54:28 +08:00
|
|
|
|
2009-10-11 05:01:59 +08:00
|
|
|
gimp_channel_combine_span (data, op,
|
|
|
|
MAX (x_start - px, 0),
|
2012-03-17 19:45:58 +08:00
|
|
|
MIN (x_end - px, roi->width), 255);
|
2009-10-11 05:01:59 +08:00
|
|
|
}
|
|
|
|
else /* use antialiasing */
|
2004-07-19 03:31:29 +08:00
|
|
|
{
|
2009-10-11 05:01:59 +08:00
|
|
|
/* algorithm changed 7-18-04, because the previous one
|
|
|
|
* did not work well for eccentric ellipses. The new
|
|
|
|
* algorithm measures the distance to the ellipse in the
|
|
|
|
* X and Y directions, and uses trigonometry to
|
|
|
|
* approximate the distance to the ellipse as the
|
|
|
|
* distance to the hypotenuse of a right triangle whose
|
|
|
|
* legs are the X and Y distances. (WES)
|
2009-01-29 18:02:47 +08:00
|
|
|
*/
|
2009-10-11 05:01:59 +08:00
|
|
|
const gfloat yi = ABS (py + 0.5 - ellipse_center_y);
|
2009-10-11 19:49:14 +08:00
|
|
|
gint last_val = -1;
|
2009-10-11 05:01:59 +08:00
|
|
|
gint x_start = px;
|
|
|
|
gint cur_x;
|
2004-07-19 03:31:29 +08:00
|
|
|
|
2012-03-17 19:45:58 +08:00
|
|
|
for (cur_x = px; cur_x < (px + roi->width); cur_x++)
|
2004-07-19 03:31:29 +08:00
|
|
|
{
|
2009-10-11 05:01:59 +08:00
|
|
|
gfloat xj;
|
|
|
|
gfloat xdist;
|
|
|
|
gfloat ydist;
|
|
|
|
gfloat r;
|
|
|
|
gfloat dist;
|
|
|
|
gint val;
|
|
|
|
|
|
|
|
if (cur_x < x + w / 2)
|
|
|
|
{
|
|
|
|
ellipse_center_x = x + a;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
ellipse_center_x = x + w - a;
|
|
|
|
}
|
|
|
|
|
|
|
|
xj = ABS (cur_x + 0.5 - ellipse_center_x);
|
|
|
|
|
|
|
|
if (yi < b)
|
|
|
|
xdist = xj - a * sqrt (1 - SQR (yi) / b_sqr);
|
|
|
|
else
|
|
|
|
xdist = 1000.0; /* anything large will work */
|
|
|
|
|
|
|
|
if (xj < a)
|
|
|
|
ydist = yi - b * sqrt (1 - SQR (xj) / a_sqr);
|
|
|
|
else
|
|
|
|
ydist = 1000.0; /* anything large will work */
|
|
|
|
|
|
|
|
r = hypot (xdist, ydist);
|
|
|
|
|
|
|
|
if (r < 0.001)
|
|
|
|
dist = 0.;
|
|
|
|
else
|
|
|
|
dist = xdist * ydist / r; /* trig formula for distance to
|
|
|
|
* hypotenuse
|
|
|
|
*/
|
|
|
|
|
|
|
|
if (xdist < 0.0)
|
|
|
|
dist *= -1;
|
|
|
|
|
|
|
|
if (dist < -0.5)
|
|
|
|
val = 255;
|
|
|
|
else if (dist < 0.5)
|
|
|
|
val = (gint) (255 * (1 - (dist + 0.5)));
|
|
|
|
else
|
|
|
|
val = 0;
|
|
|
|
|
|
|
|
if (last_val != val)
|
|
|
|
{
|
2009-10-11 19:49:14 +08:00
|
|
|
if (last_val != -1)
|
|
|
|
gimp_channel_combine_span (data, op,
|
|
|
|
MAX (x_start - px, 0),
|
2012-03-17 19:45:58 +08:00
|
|
|
MIN (cur_x - px, roi->width),
|
2009-10-11 19:49:14 +08:00
|
|
|
last_val);
|
|
|
|
|
2009-10-11 05:01:59 +08:00
|
|
|
x_start = cur_x;
|
|
|
|
last_val = val;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* skip ahead if we are on the straight segment
|
|
|
|
* between rounded corners
|
|
|
|
*/
|
|
|
|
if (cur_x >= x + a && cur_x < x + w - a)
|
|
|
|
{
|
2009-10-11 19:49:14 +08:00
|
|
|
gimp_channel_combine_span (data, op,
|
|
|
|
MAX (x_start - px, 0),
|
2012-03-17 19:45:58 +08:00
|
|
|
MIN (cur_x - px, roi->width),
|
2009-10-11 19:49:14 +08:00
|
|
|
last_val);
|
|
|
|
|
2009-10-11 05:01:59 +08:00
|
|
|
x_start = cur_x;
|
|
|
|
cur_x = x + w - a;
|
|
|
|
last_val = val = 255;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Time to change center? */
|
|
|
|
if (cur_x >= x + w / 2)
|
|
|
|
{
|
|
|
|
ellipse_center_x = x + w - a;
|
|
|
|
}
|
2004-07-19 03:31:29 +08:00
|
|
|
}
|
2006-10-19 02:54:28 +08:00
|
|
|
|
2009-10-11 05:01:59 +08:00
|
|
|
gimp_channel_combine_span (data, op,
|
|
|
|
MAX (x_start - px, 0),
|
2012-03-17 19:45:58 +08:00
|
|
|
MIN (cur_x - px, roi->width),
|
2009-10-11 05:01:59 +08:00
|
|
|
last_val);
|
|
|
|
}
|
2006-04-12 20:49:29 +08:00
|
|
|
}
|
1997-11-25 06:05:25 +08:00
|
|
|
}
|
|
|
|
|
2009-10-11 05:01:59 +08:00
|
|
|
/* use the intersected values for the boundary calculation */
|
|
|
|
x = x0;
|
|
|
|
y = y0;
|
|
|
|
w = width;
|
|
|
|
h = height;
|
|
|
|
|
2004-07-19 22:25:59 +08:00
|
|
|
/* determine new boundary */
|
2009-10-11 05:01:59 +08:00
|
|
|
if (mask->bounds_known && (op == GIMP_CHANNEL_OP_ADD) && ! mask->empty)
|
1997-11-25 06:05:25 +08:00
|
|
|
{
|
2012-03-17 19:45:58 +08:00
|
|
|
if (x < mask->x1) mask->x1 = x;
|
|
|
|
if (y < mask->y1) mask->y1 = y;
|
|
|
|
|
|
|
|
if ((x + w) > mask->x2) mask->x2 = (x + w);
|
|
|
|
if ((y + h) > mask->y2) mask->y2 = (y + h);
|
1997-11-25 06:05:25 +08:00
|
|
|
}
|
2002-03-19 00:22:14 +08:00
|
|
|
else if (op == GIMP_CHANNEL_OP_REPLACE || mask->empty)
|
1997-11-25 06:05:25 +08:00
|
|
|
{
|
|
|
|
mask->empty = FALSE;
|
2002-08-30 00:48:17 +08:00
|
|
|
mask->x1 = x;
|
|
|
|
mask->y1 = y;
|
|
|
|
mask->x2 = x + w;
|
|
|
|
mask->y2 = y + h;
|
1997-11-25 06:05:25 +08:00
|
|
|
}
|
|
|
|
else
|
2004-07-19 22:25:59 +08:00
|
|
|
{
|
|
|
|
mask->bounds_known = FALSE;
|
|
|
|
}
|
1997-11-25 06:05:25 +08:00
|
|
|
|
2003-10-06 20:17:11 +08:00
|
|
|
gimp_drawable_update (GIMP_DRAWABLE (mask), x, y, w, h);
|
1997-11-25 06:05:25 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
void
|
2002-03-19 00:22:14 +08:00
|
|
|
gimp_channel_combine_mask (GimpChannel *mask,
|
2006-04-12 20:49:29 +08:00
|
|
|
GimpChannel *add_on,
|
|
|
|
GimpChannelOps op,
|
|
|
|
gint off_x,
|
|
|
|
gint off_y)
|
1997-11-25 06:05:25 +08:00
|
|
|
{
|
2012-03-19 10:15:30 +08:00
|
|
|
GeglBuffer *mask_buffer;
|
|
|
|
GeglBuffer *add_on_buffer;
|
|
|
|
GeglBufferIterator *iter;
|
|
|
|
GeglRectangle rect;
|
|
|
|
gint x, y, w, h;
|
1997-11-25 06:05:25 +08:00
|
|
|
|
2001-08-11 22:39:19 +08:00
|
|
|
g_return_if_fail (GIMP_IS_CHANNEL (mask));
|
|
|
|
g_return_if_fail (GIMP_IS_CHANNEL (add_on));
|
|
|
|
|
2005-09-07 18:08:02 +08:00
|
|
|
if (! gimp_rectangle_intersect (off_x, off_y,
|
2008-11-03 08:09:01 +08:00
|
|
|
gimp_item_get_width (GIMP_ITEM (add_on)),
|
|
|
|
gimp_item_get_height (GIMP_ITEM (add_on)),
|
2005-09-07 18:08:02 +08:00
|
|
|
0, 0,
|
2008-11-03 08:09:01 +08:00
|
|
|
gimp_item_get_width (GIMP_ITEM (mask)),
|
|
|
|
gimp_item_get_height (GIMP_ITEM (mask)),
|
2005-09-07 18:08:02 +08:00
|
|
|
&x, &y, &w, &h))
|
|
|
|
return;
|
1997-11-25 06:05:25 +08:00
|
|
|
|
2012-03-21 07:42:44 +08:00
|
|
|
mask_buffer = gimp_drawable_get_buffer (GIMP_DRAWABLE (mask));
|
|
|
|
add_on_buffer = gimp_drawable_get_buffer (GIMP_DRAWABLE (add_on));
|
2012-03-19 10:15:30 +08:00
|
|
|
|
|
|
|
rect.x = x;
|
|
|
|
rect.y = y;
|
|
|
|
rect.width = w;
|
|
|
|
rect.height = h;
|
|
|
|
|
2012-03-27 00:31:53 +08:00
|
|
|
iter = gegl_buffer_iterator_new (mask_buffer, &rect, 0, babl_format ("Y u8"),
|
2012-03-27 01:30:30 +08:00
|
|
|
GEGL_BUFFER_READWRITE, GEGL_ABYSS_NONE);
|
2012-03-19 10:15:30 +08:00
|
|
|
|
|
|
|
rect.x -= off_x;
|
|
|
|
rect.y -= off_y;
|
|
|
|
|
2012-03-27 00:31:53 +08:00
|
|
|
gegl_buffer_iterator_add (iter, add_on_buffer, &rect, 0, babl_format ("Y u8"),
|
2012-03-27 01:30:30 +08:00
|
|
|
GEGL_BUFFER_READ, GEGL_ABYSS_NONE);
|
1997-11-25 06:05:25 +08:00
|
|
|
|
1999-04-09 14:00:11 +08:00
|
|
|
switch (op)
|
1999-08-22 19:45:31 +08:00
|
|
|
{
|
2002-03-19 00:22:14 +08:00
|
|
|
case GIMP_CHANNEL_OP_ADD:
|
|
|
|
case GIMP_CHANNEL_OP_REPLACE:
|
2012-03-19 10:15:30 +08:00
|
|
|
while (gegl_buffer_iterator_next (iter))
|
|
|
|
{
|
|
|
|
guchar *mask_data = iter->data[0];
|
|
|
|
guchar *add_on_data = iter->data[1];
|
|
|
|
gint length = iter->length;
|
|
|
|
|
|
|
|
while (length--)
|
|
|
|
{
|
|
|
|
const guint val = *mask_data + *add_on_data;
|
|
|
|
|
|
|
|
*mask_data = CLAMP (val, 0, 255);
|
|
|
|
|
|
|
|
add_on_data++;
|
|
|
|
mask_data++;
|
|
|
|
}
|
|
|
|
}
|
1999-08-22 19:45:31 +08:00
|
|
|
break;
|
2002-08-30 00:48:17 +08:00
|
|
|
|
2002-03-19 00:22:14 +08:00
|
|
|
case GIMP_CHANNEL_OP_SUBTRACT:
|
2012-03-19 10:15:30 +08:00
|
|
|
while (gegl_buffer_iterator_next (iter))
|
|
|
|
{
|
|
|
|
guchar *mask_data = iter->data[0];
|
|
|
|
guchar *add_on_data = iter->data[1];
|
|
|
|
gint length = iter->length;
|
|
|
|
|
|
|
|
while (length--)
|
|
|
|
{
|
|
|
|
if (*add_on_data > *mask_data)
|
|
|
|
*mask_data = 0;
|
|
|
|
else
|
|
|
|
*mask_data -= *add_on_data;
|
|
|
|
|
|
|
|
add_on_data++;
|
|
|
|
mask_data++;
|
|
|
|
}
|
|
|
|
}
|
1999-08-22 19:45:31 +08:00
|
|
|
break;
|
2002-08-30 00:48:17 +08:00
|
|
|
|
2002-03-19 00:22:14 +08:00
|
|
|
case GIMP_CHANNEL_OP_INTERSECT:
|
2012-03-19 10:15:30 +08:00
|
|
|
while (gegl_buffer_iterator_next (iter))
|
|
|
|
{
|
|
|
|
guchar *mask_data = iter->data[0];
|
|
|
|
guchar *add_on_data = iter->data[1];
|
|
|
|
gint length = iter->length;
|
|
|
|
|
|
|
|
while (length--)
|
|
|
|
{
|
|
|
|
*mask_data = MIN (*mask_data, *add_on_data);
|
|
|
|
|
|
|
|
add_on_data++;
|
|
|
|
mask_data++;
|
|
|
|
}
|
|
|
|
}
|
1999-08-22 19:45:31 +08:00
|
|
|
break;
|
2002-08-30 00:48:17 +08:00
|
|
|
|
1999-08-22 19:45:31 +08:00
|
|
|
default:
|
2004-05-12 16:13:33 +08:00
|
|
|
g_warning ("%s: unknown operation type", G_STRFUNC);
|
1999-08-22 19:45:31 +08:00
|
|
|
break;
|
|
|
|
}
|
2001-01-29 10:45:02 +08:00
|
|
|
|
1997-11-25 06:05:25 +08:00
|
|
|
mask->bounds_known = FALSE;
|
2003-10-06 20:17:11 +08:00
|
|
|
|
2005-09-07 18:08:02 +08:00
|
|
|
gimp_drawable_update (GIMP_DRAWABLE (mask), x, y, w, h);
|
1997-11-25 06:05:25 +08:00
|
|
|
}
|