21b8007b29
such as masks and outlines. The cache is currently very stupid and only cacheds the last transformed object. Add caches to GimpBrush for its mask, its pixmap and its boundary, and remove the same caches and a ton of members from GimpBrushCore. This involves adding lots of const qualifiers because GimpBrush returns const pointers now for trasnformed stuff.
575 lines
18 KiB
C
575 lines
18 KiB
C
/* GIMP - The GNU 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 3 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, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <string.h>
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#include <gegl.h>
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#include "libgimpbase/gimpbase.h"
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#include "libgimpmath/gimpmath.h"
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#include "paint-types.h"
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#include "paint-funcs/paint-funcs.h"
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#include "base/pixel-region.h"
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#include "base/temp-buf.h"
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#include "core/gimpbrush.h"
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#include "core/gimpdrawable.h"
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#include "core/gimpdynamics.h"
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#include "core/gimpdynamicsoutput.h"
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#include "core/gimperror.h"
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#include "core/gimpimage.h"
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#include "core/gimppickable.h"
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#include "gimpheal.h"
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#include "gimpsourceoptions.h"
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#include "gimp-intl.h"
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/* NOTES:
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*
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* I had the code working for healing from a pattern, but the results look
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* terrible and I can't see a use for it right now.
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*/
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static gboolean gimp_heal_start (GimpPaintCore *paint_core,
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GimpDrawable *drawable,
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GimpPaintOptions *paint_options,
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const GimpCoords *coords,
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GError **error);
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static void gimp_heal_substitute_0_for_1 (PixelRegion *pr);
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static void gimp_heal_divide (PixelRegion *topPR,
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PixelRegion *bottomPR,
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gdouble *result);
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static void gimp_heal_multiply (gdouble *first,
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PixelRegion *secondPR,
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PixelRegion *resultPR);
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static gdouble gimp_heal_laplace_iteration (gdouble *matrix,
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gint height,
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gint depth,
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gint width,
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gdouble *solution,
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guchar *mask);
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static void gimp_heal_laplace_loop (gdouble *matrix,
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gint height,
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gint depth,
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gint width,
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gdouble *solution,
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guchar *mask);
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static PixelRegion *gimp_heal_region (PixelRegion *tempPR,
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PixelRegion *srcPR,
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const TempBuf *mask_buf);
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static void gimp_heal_motion (GimpSourceCore *source_core,
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GimpDrawable *drawable,
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GimpPaintOptions *paint_options,
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const GimpCoords *coords,
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gdouble opacity,
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GimpPickable *src_pickable,
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PixelRegion *srcPR,
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gint src_offset_x,
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gint src_offset_y,
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TempBuf *paint_area,
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gint paint_area_offset_x,
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gint paint_area_offset_y,
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gint paint_area_width,
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gint paint_area_height);
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G_DEFINE_TYPE (GimpHeal, gimp_heal, GIMP_TYPE_SOURCE_CORE)
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#define parent_class gimp_heal_parent_class
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void
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gimp_heal_register (Gimp *gimp,
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GimpPaintRegisterCallback callback)
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{
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(* callback) (gimp,
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GIMP_TYPE_HEAL,
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GIMP_TYPE_SOURCE_OPTIONS,
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"gimp-heal",
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_("Heal"),
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"gimp-tool-heal");
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}
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static void
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gimp_heal_class_init (GimpHealClass *klass)
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{
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GimpPaintCoreClass *paint_core_class = GIMP_PAINT_CORE_CLASS (klass);
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GimpSourceCoreClass *source_core_class = GIMP_SOURCE_CORE_CLASS (klass);
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paint_core_class->start = gimp_heal_start;
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source_core_class->motion = gimp_heal_motion;
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}
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static void
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gimp_heal_init (GimpHeal *heal)
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{
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}
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static gboolean
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gimp_heal_start (GimpPaintCore *paint_core,
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GimpDrawable *drawable,
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GimpPaintOptions *paint_options,
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const GimpCoords *coords,
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GError **error)
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{
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GimpSourceCore *source_core = GIMP_SOURCE_CORE (paint_core);
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if (! GIMP_PAINT_CORE_CLASS (parent_class)->start (paint_core, drawable,
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paint_options, coords,
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error))
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{
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return FALSE;
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}
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if (! source_core->set_source && gimp_drawable_is_indexed (drawable))
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{
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g_set_error_literal (error, GIMP_ERROR, GIMP_FAILED,
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_("Healing does not operate on indexed layers."));
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return FALSE;
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}
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return TRUE;
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}
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/*
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* Substitute any zeros in the input PixelRegion for ones. This is needed by
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* the algorithm to avoid division by zero, and to get a more realistic image
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* since multiplying by zero is often incorrect (i.e., healing from a dark to
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* a light region will have incorrect spots of zero)
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*/
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static void
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gimp_heal_substitute_0_for_1 (PixelRegion *pr)
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{
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gint i, j, k;
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gint height = pr->h;
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gint width = pr->w;
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gint depth = pr->bytes;
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guchar *pr_data = pr->data;
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guchar *p;
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for (i = 0; i < height; i++)
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{
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p = pr_data;
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for (j = 0; j < width; j++)
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{
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for (k = 0; k < depth; k++)
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{
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if (p[k] == 0)
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p[k] = 1;
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}
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p += depth;
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}
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pr_data += pr->rowstride;
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}
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}
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/*
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* Divide topPR by bottomPR and store the result as a double
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*/
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static void
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gimp_heal_divide (PixelRegion *topPR,
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PixelRegion *bottomPR,
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gdouble *result)
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{
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gint i, j, k;
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gint height = topPR->h;
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gint width = topPR->w;
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gint depth = topPR->bytes;
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guchar *t_data = topPR->data;
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guchar *b_data = bottomPR->data;
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guchar *t;
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guchar *b;
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gdouble *r = result;
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g_assert (topPR->bytes == bottomPR->bytes);
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for (i = 0; i < height; i++)
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{
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t = t_data;
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b = b_data;
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for (j = 0; j < width; j++)
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{
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for (k = 0; k < depth; k++)
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{
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r[k] = (gdouble) (t[k]) / (gdouble) (b[k]);
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}
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t += depth;
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b += depth;
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r += depth;
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}
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t_data += topPR->rowstride;
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b_data += bottomPR->rowstride;
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}
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}
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/*
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* multiply first by secondPR and store the result as a PixelRegion
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*/
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static void
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gimp_heal_multiply (gdouble *first,
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PixelRegion *secondPR,
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PixelRegion *resultPR)
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{
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gint i, j, k;
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gint height = secondPR->h;
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gint width = secondPR->w;
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gint depth = secondPR->bytes;
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guchar *s_data = secondPR->data;
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guchar *r_data = resultPR->data;
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gdouble *f = first;
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guchar *s;
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guchar *r;
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g_assert (secondPR->bytes == resultPR->bytes);
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for (i = 0; i < height; i++)
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{
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s = s_data;
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r = r_data;
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for (j = 0; j < width; j++)
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{
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for (k = 0; k < depth; k++)
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{
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r[k] = (guchar) CLAMP0255 (ROUND (((gdouble) (f[k])) * ((gdouble) (s[k]))));
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}
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f += depth;
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s += depth;
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r += depth;
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}
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s_data += secondPR->rowstride;
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r_data += resultPR->rowstride;
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}
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}
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/*
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* Perform one iteration of the laplace solver for matrix. Store the
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* result in solution and return the square of the cummulative error
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* of the solution.
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*/
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static gdouble
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gimp_heal_laplace_iteration (gdouble *matrix,
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gint height,
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gint depth,
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gint width,
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gdouble *solution,
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guchar *mask)
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{
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const gint rowstride = width * depth;
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gint i, j, k;
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gdouble tmp, diff;
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gdouble err = 0.0;
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for (i = 0; i < height; i++)
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{
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for (j = 0; j < width; j++)
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{
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if ((0 == *mask) ||
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(i == 0) || (i == (height - 1)) ||
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(j == 0) || (j == (width - 1)))
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{
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/* do nothing at the boundary or outside mask */
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for (k = 0; k < depth; k++)
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*(solution + k) = *(matrix + k);
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}
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else
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{
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/* calculate the mean of four neighbours for all color channels */
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/* v[i][j] = 0.45 * (v[i][j-1]+v[i][j+1]+v[i-1][j]+v[i+1][j]) */
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for (k = 0; k < depth; k++)
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{
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tmp = *(solution + k);
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*(solution + k) = 0.25 *
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( *(matrix - depth + k) /* west */
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+ *(matrix + depth + k) /* east */
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+ *(matrix - rowstride + k) /* north */
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+ *(matrix + rowstride + k)); /* south */
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diff = *(solution + k) - tmp;
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err += diff*diff;
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}
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}
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/* advance pointers to data */
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matrix += depth;
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solution += depth;
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mask++;
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}
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}
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return err;
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}
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/*
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* Solve the laplace equation for matrix and store the result in solution.
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*/
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static void
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gimp_heal_laplace_loop (gdouble *matrix,
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gint height,
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gint depth,
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gint width,
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gdouble *solution,
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guchar *mask)
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{
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#define EPSILON 0.0001
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#define MAX_ITER 500
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gint i;
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/* repeat until convergence or max iterations */
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for (i = 0; i < MAX_ITER; i++)
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{
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gdouble sqr_err;
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/* do one iteration and store the amount of error */
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sqr_err = gimp_heal_laplace_iteration (matrix, height, depth, width,
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solution, mask);
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/* copy solution to matrix */
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memcpy (matrix, solution, width * height * depth * sizeof (double));
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if (sqr_err < SQR (EPSILON))
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break;
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}
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}
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/*
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* Algorithm Design:
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*
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* T. Georgiev, "Image Reconstruction Invariant to Relighting", EUROGRAPHICS
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* 2005, http://www.tgeorgiev.net/
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*/
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static PixelRegion *
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gimp_heal_region (PixelRegion *tempPR,
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PixelRegion *srcPR,
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const TempBuf *mask_buf)
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{
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gdouble *i_1 = g_new (gdouble, tempPR->h * tempPR->bytes * tempPR->w);
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gdouble *i_2 = g_new (gdouble, tempPR->h * tempPR->bytes * tempPR->w);
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guchar *mask = temp_buf_get_data (mask_buf);
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/* substitute 0's for 1's for the division and multiplication operations that
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* come later
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*/
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gimp_heal_substitute_0_for_1 (srcPR);
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/* divide tempPR by srcPR and store the result as a double in i_1 */
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gimp_heal_divide (tempPR, srcPR, i_1);
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/* FIXME: is a faster implementation needed? */
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gimp_heal_laplace_loop (i_1, tempPR->h, tempPR->bytes, tempPR->w, i_2, mask);
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/* multiply a double by srcPR and store in tempPR */
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gimp_heal_multiply (i_2, srcPR, tempPR);
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g_free (i_1);
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g_free (i_2);
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return tempPR;
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}
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static void
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gimp_heal_motion (GimpSourceCore *source_core,
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GimpDrawable *drawable,
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GimpPaintOptions *paint_options,
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const GimpCoords *coords,
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gdouble opacity,
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GimpPickable *src_pickable,
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PixelRegion *srcPR,
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gint src_offset_x,
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gint src_offset_y,
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TempBuf *paint_area,
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gint paint_area_offset_x,
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gint paint_area_offset_y,
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gint paint_area_width,
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gint paint_area_height)
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{
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GimpPaintCore *paint_core = GIMP_PAINT_CORE (source_core);
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GimpContext *context = GIMP_CONTEXT (paint_options);
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GimpDynamics *dynamics = GIMP_BRUSH_CORE (paint_core)->dynamics;
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GimpDynamicsOutput *hardness_output;
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GimpImage *image = gimp_item_get_image (GIMP_ITEM (drawable));
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TempBuf *src;
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TempBuf *temp;
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PixelRegion origPR;
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PixelRegion tempPR;
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PixelRegion destPR;
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GimpImageType src_type;
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const TempBuf *mask_buf;
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gdouble fade_point;
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gdouble hardness;
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hardness_output = gimp_dynamics_get_output (dynamics,
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GIMP_DYNAMICS_OUTPUT_HARDNESS);
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fade_point = gimp_paint_options_get_fade (paint_options, image,
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paint_core->pixel_dist);
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hardness = gimp_dynamics_output_get_linear_value (hardness_output,
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coords,
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paint_options,
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fade_point);
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mask_buf = gimp_brush_core_get_brush_mask (GIMP_BRUSH_CORE (source_core),
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coords,
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GIMP_BRUSH_HARD,
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hardness);
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src_type = gimp_pickable_get_image_type (src_pickable);
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/* we need the source area with alpha and we modify it, so make a copy */
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src = temp_buf_new (srcPR->w, srcPR->h,
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GIMP_IMAGE_TYPE_BYTES (GIMP_IMAGE_TYPE_WITH_ALPHA (src_type)),
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0, 0, NULL);
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pixel_region_init_temp_buf (&tempPR, src, 0, 0, src->width, src->height);
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/*
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* the effect of the following is to copy the contents of the source
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* region to the "src" temp-buf, adding an alpha channel if necessary
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*/
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if (GIMP_IMAGE_TYPE_HAS_ALPHA (src_type))
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copy_region (srcPR, &tempPR);
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else
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add_alpha_region (srcPR, &tempPR);
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/* reinitialize srcPR */
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pixel_region_init_temp_buf (srcPR, src, 0, 0, src->width, src->height);
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if (GIMP_IMAGE_TYPE_WITH_ALPHA (src_type) !=
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gimp_drawable_type_with_alpha (drawable))
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{
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GimpImage *image = gimp_item_get_image (GIMP_ITEM (drawable));
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TempBuf *temp2;
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gboolean new_buf;
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temp2 = gimp_image_transform_temp_buf (image,
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gimp_drawable_type_with_alpha (drawable),
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src, &new_buf);
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if (new_buf)
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temp_buf_free (src);
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src = temp2;
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}
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/* reinitialize srcPR */
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pixel_region_init_temp_buf (srcPR, src, 0, 0, src->width, src->height);
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/* FIXME: the area under the cursor and the source area should be x% larger
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* than the brush size. Otherwise the brush must be a lot bigger than the
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* area to heal to get good results. Having the user pick such a large brush
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* is perhaps counter-intutitive?
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*/
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pixel_region_init (&origPR, gimp_drawable_get_tiles (drawable),
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paint_area->x, paint_area->y,
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paint_area->width, paint_area->height, FALSE);
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temp = temp_buf_new (origPR.w, origPR.h,
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gimp_drawable_bytes_with_alpha (drawable),
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0, 0, NULL);
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pixel_region_init_temp_buf (&tempPR, temp, 0, 0, temp->width, temp->height);
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if (gimp_drawable_has_alpha (drawable))
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copy_region (&origPR, &tempPR);
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else
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add_alpha_region (&origPR, &tempPR);
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/* reinitialize tempPR */
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pixel_region_init_temp_buf (&tempPR, temp, 0, 0, temp->width, temp->height);
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/* now tempPR holds the data under the cursor and
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* srcPR holds the area to sample from
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*/
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/* get the destination to paint to */
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pixel_region_init_temp_buf (&destPR, paint_area,
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paint_area_offset_x, paint_area_offset_y,
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paint_area_width, paint_area_height);
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/* check that srcPR, tempPR, destPR, and mask_buf are the same size */
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if ((srcPR->w != tempPR.w) || (srcPR->w != destPR.w) ||
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(srcPR->h != tempPR.h) || (srcPR->h != destPR.h) ||
|
|
(srcPR->h != mask_buf->height) ||
|
|
(srcPR->w != mask_buf->width))
|
|
{
|
|
/* this generally means that the source point has hit the edge of the
|
|
layer, so it is not an error and we should not complain, just
|
|
don't do anything */
|
|
|
|
temp_buf_free (src);
|
|
temp_buf_free (temp);
|
|
|
|
return;
|
|
}
|
|
|
|
/* heal tempPR using srcPR */
|
|
gimp_heal_region (&tempPR, srcPR, mask_buf);
|
|
|
|
temp_buf_free (src);
|
|
|
|
/* reinitialize tempPR */
|
|
pixel_region_init_temp_buf (&tempPR, temp, 0, 0, temp->width, temp->height);
|
|
|
|
copy_region (&tempPR, &destPR);
|
|
|
|
temp_buf_free (temp);
|
|
|
|
/* replace the canvas with our healed data */
|
|
gimp_brush_core_replace_canvas (GIMP_BRUSH_CORE (paint_core), drawable,
|
|
coords,
|
|
MIN (opacity, GIMP_OPACITY_OPAQUE),
|
|
gimp_context_get_opacity (context),
|
|
gimp_paint_options_get_brush_mode (paint_options),
|
|
hardness,
|
|
GIMP_PAINT_INCREMENTAL);
|
|
}
|