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d010bb5fe4
2001-05-01 Michael Natterer <mitch@gimp.org> * app/app_procs.c: removed more GUI initialisation code. * app/color_transfer.c: removed useless includes. * app/gui/brush-editor.[ch] * app/gui/dialogs-constructors.c: s/BrushEditGeneratedWindow/BrushEditor/, s/begw/brush_editor/, made the brush preview of the editor autoresizing. * app/gui/dialogs.h: removed "extern" declaration of non-existant variable. * app/gui/gui.[ch]: new function gui_post_init() which shows the tips dialog. * app/gui/tips-dialog.c: made signal handling nicer (clean up in a "destroy" handler). * app/gui/toolbox.[ch]: removed toolbox_raise(), removed the help system (de)initialisation code which is now in gui.c, cleanup.
59 lines
1.5 KiB
C
59 lines
1.5 KiB
C
/* The GIMP -- an image manipulation program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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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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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "config.h"
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#include <glib.h>
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#include "libgimpmath/gimpmath.h"
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#include "apptypes.h"
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#include "color_transfer.h"
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/* for lightening */
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gdouble highlights_add[256];
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gdouble midtones_add[256];
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gdouble shadows_add[256];
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/* for darkening */
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gdouble highlights_sub[256];
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gdouble midtones_sub[256];
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gdouble shadows_sub[256];
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/* color transfer functions */
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void
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color_transfer_init (void)
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{
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gint i;
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for (i = 0; i < 256; i++)
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{
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highlights_add[i] =
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shadows_sub[255 - i] = (1.075 - 1 / ((gdouble) i / 16.0 + 1));
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midtones_add[i] =
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midtones_sub[i] = 0.667 * (1 - SQR (((gdouble) i - 127.0) / 127.0));
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shadows_add[i] =
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highlights_sub[i] = 0.667 * (1 - SQR (((gdouble) i - 127.0) / 127.0));
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}
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}
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