mirror of https://github.com/GNOME/gimp.git
497 lines
18 KiB
C
497 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 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 <stdlib.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 "base/pixel-region.h"
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#include "base/temp-buf.h"
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#include "base/tile-manager.h"
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#include "paint-funcs/paint-funcs.h"
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#include "core/gimp.h"
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#include "core/gimpdrawable.h"
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#include "core/gimpimage.h"
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#include "core/gimppickable.h"
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#include "core/gimp-transform-region.h"
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#include "gimpperspectiveclone.h"
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#include "gimpperspectivecloneoptions.h"
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#include "gimp-intl.h"
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#define MIN4(a,b,c,d) MIN(MIN(a,b),MIN(c,d))
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#define MAX4(a,b,c,d) MAX(MAX(a,b),MAX(c,d))
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static void gimp_perspective_clone_finalize (GObject *object);
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static gboolean gimp_perspective_clone_start (GimpPaintCore *paint_core,
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GimpDrawable *drawable,
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GimpPaintOptions *paint_options,
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GimpCoords *coords,
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GError **error);
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static void gimp_perspective_clone_paint (GimpPaintCore *paint_core,
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GimpDrawable *drawable,
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GimpPaintOptions *paint_options,
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GimpPaintState paint_state,
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guint32 time);
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static gboolean gimp_perspective_clone_get_source (GimpSourceCore *source_core,
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GimpDrawable *drawable,
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GimpPaintOptions *paint_options,
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GimpPickable *src_pickable,
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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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PixelRegion *srcPR);
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static void gimp_perspective_clone_get_matrix (GimpPerspectiveClone *clone,
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GimpMatrix3 *matrix);
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G_DEFINE_TYPE (GimpPerspectiveClone, gimp_perspective_clone,
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GIMP_TYPE_CLONE)
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#define parent_class gimp_perspective_clone_parent_class
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void
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gimp_perspective_clone_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_PERSPECTIVE_CLONE,
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GIMP_TYPE_PERSPECTIVE_CLONE_OPTIONS,
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"gimp-perspective-clone",
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_("Perspective Clone"),
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"gimp-tool-perspective-clone");
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}
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static void
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gimp_perspective_clone_class_init (GimpPerspectiveCloneClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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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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object_class->finalize = gimp_perspective_clone_finalize;
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paint_core_class->start = gimp_perspective_clone_start;
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paint_core_class->paint = gimp_perspective_clone_paint;
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source_core_class->get_source = gimp_perspective_clone_get_source;
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}
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static void
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gimp_perspective_clone_init (GimpPerspectiveClone *clone)
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{
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clone->src_x_fv = 0.0; /* source coords in front_view perspective */
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clone->src_y_fv = 0.0;
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clone->dest_x_fv = 0.0; /* destination coords in front_view perspective */
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clone->dest_y_fv = 0.0;
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gimp_matrix3_identity (&clone->transform);
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gimp_matrix3_identity (&clone->transform_inv);
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}
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static void
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gimp_perspective_clone_finalize (GObject *object)
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{
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GimpPerspectiveClone *clone = GIMP_PERSPECTIVE_CLONE (object);
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if (clone->src_area)
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{
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temp_buf_free (clone->src_area);
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clone->src_area = NULL;
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}
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static gboolean
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gimp_perspective_clone_start (GimpPaintCore *paint_core,
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GimpDrawable *drawable,
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GimpPaintOptions *paint_options,
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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 (error, 0, 0,
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_("Perspective Clone 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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static void
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gimp_perspective_clone_paint (GimpPaintCore *paint_core,
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GimpDrawable *drawable,
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GimpPaintOptions *paint_options,
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GimpPaintState paint_state,
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guint32 time)
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{
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GimpSourceCore *source_core = GIMP_SOURCE_CORE (paint_core);
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GimpPerspectiveClone *clone = GIMP_PERSPECTIVE_CLONE (paint_core);
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GimpSourceOptions *options = GIMP_SOURCE_OPTIONS (paint_options);
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switch (paint_state)
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{
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case GIMP_PAINT_STATE_INIT:
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if (source_core->set_source)
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{
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g_object_set (source_core, "src-drawable", drawable, NULL);
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source_core->src_x = paint_core->cur_coords.x;
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source_core->src_y = paint_core->cur_coords.y;
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/* get source coordinates in front view perspective */
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gimp_matrix3_transform_point (&clone->transform_inv,
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source_core->src_x,
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source_core->src_y,
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&clone->src_x_fv,
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&clone->src_y_fv);
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source_core->first_stroke = TRUE;
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}
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else if (options->align_mode == GIMP_SOURCE_ALIGN_NO)
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{
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source_core->orig_src_x = source_core->src_x;
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source_core->orig_src_y = source_core->src_y;
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source_core->first_stroke = TRUE;
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}
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break;
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case GIMP_PAINT_STATE_MOTION:
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if (source_core->set_source)
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{
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/* If the control key is down, move the src target and return */
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source_core->src_x = paint_core->cur_coords.x;
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source_core->src_y = paint_core->cur_coords.y;
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/* get source coordinates in front view perspective */
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gimp_matrix3_transform_point (&clone->transform_inv,
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source_core->src_x,
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source_core->src_y,
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&clone->src_x_fv,
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&clone->src_y_fv);
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source_core->first_stroke = TRUE;
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}
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else
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{
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/* otherwise, update the target */
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gint dest_x;
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gint dest_y;
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dest_x = paint_core->cur_coords.x;
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dest_y = paint_core->cur_coords.y;
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if (options->align_mode == GIMP_SOURCE_ALIGN_REGISTERED)
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{
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source_core->offset_x = 0;
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source_core->offset_y = 0;
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}
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else if (options->align_mode == GIMP_SOURCE_ALIGN_FIXED)
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{
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source_core->offset_x = source_core->src_x - dest_x;
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source_core->offset_y = source_core->src_y - dest_y;
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}
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else if (source_core->first_stroke)
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{
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source_core->offset_x = source_core->src_x - dest_x;
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source_core->offset_y = source_core->src_y - dest_y;
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/* get destination coordinates in front view perspective */
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gimp_matrix3_transform_point (&clone->transform_inv,
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dest_x,
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dest_y,
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&clone->dest_x_fv,
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&clone->dest_y_fv);
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source_core->first_stroke = FALSE;
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}
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gimp_source_core_motion (source_core, drawable, paint_options);
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}
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break;
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case GIMP_PAINT_STATE_FINISH:
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break;
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default:
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break;
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}
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g_object_notify (G_OBJECT (clone), "src-x");
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g_object_notify (G_OBJECT (clone), "src-y");
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}
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static gboolean
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gimp_perspective_clone_get_source (GimpSourceCore *source_core,
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GimpDrawable *drawable,
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GimpPaintOptions *paint_options,
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GimpPickable *src_pickable,
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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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PixelRegion *srcPR)
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{
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GimpPerspectiveClone *clone = GIMP_PERSPECTIVE_CLONE (source_core);
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GimpPaintCore *paint_core = GIMP_PAINT_CORE (source_core);
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GimpSourceOptions *options = GIMP_SOURCE_OPTIONS (paint_options);
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GimpImage *src_image;
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GimpImage *image;
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GimpImageType src_type;
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gint x1d, y1d, x2d, y2d;
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gdouble x1s, y1s, x2s, y2s, x3s, y3s, x4s, y4s;
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gint xmin, ymin, xmax, ymax;
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TileManager *src_tiles;
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TileManager *orig_tiles;
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PixelRegion origPR;
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PixelRegion destPR;
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GimpMatrix3 matrix;
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gint bytes;
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src_image = gimp_pickable_get_image (src_pickable);
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image = gimp_item_get_image (GIMP_ITEM (drawable));
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src_type = gimp_pickable_get_image_type (src_pickable);
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src_tiles = gimp_pickable_get_tiles (src_pickable);
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/* Destination coordinates that will be painted */
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x1d = paint_area->x;
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y1d = paint_area->y;
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x2d = paint_area->x + paint_area->width;
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y2d = paint_area->y + paint_area->height;
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/* Boundary box for source pixels to copy: Convert all the vertex of
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* the box to paint in destination area to its correspondent in
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* source area bearing in mind perspective
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*/
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gimp_perspective_clone_get_source_point (clone, x1d, y1d, &x1s, &y1s);
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gimp_perspective_clone_get_source_point (clone, x1d, y2d, &x2s, &y2s);
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gimp_perspective_clone_get_source_point (clone, x2d, y1d, &x3s, &y3s);
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gimp_perspective_clone_get_source_point (clone, x2d, y2d, &x4s, &y4s);
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xmin = floor (MIN4 (x1s, x2s, x3s, x4s));
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ymin = floor (MIN4 (y1s, y2s, y3s, y4s));
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xmax = ceil (MAX4 (x1s, x2s, x3s, x4s));
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ymax = ceil (MAX4 (y1s, y2s, y3s, y4s));
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xmin = CLAMP (xmin - 1, 0, tile_manager_width (src_tiles));
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ymin = CLAMP (ymin - 1, 0, tile_manager_height (src_tiles));
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xmax = CLAMP (xmax + 1, 0, tile_manager_width (src_tiles));
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ymax = CLAMP (ymax + 1, 0, tile_manager_height (src_tiles));
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/* if the source area is completely out of the image */
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if (!(xmax - xmin) || !(ymax - ymin))
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return FALSE;
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/* If the source image is different from the destination,
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* then we should copy straight from the source image
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* to the canvas.
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* Otherwise, we need a call to get_orig_image to make sure
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* we get a copy of the unblemished (offset) image
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*/
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if (( options->sample_merged && (src_image != image)) ||
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(! options->sample_merged && (source_core->src_drawable != drawable)))
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{
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pixel_region_init (&origPR, src_tiles,
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xmin, ymin, xmax - xmin, ymax - ymin, FALSE);
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}
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else
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{
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TempBuf *orig;
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/* get the original image */
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if (options->sample_merged)
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orig = gimp_paint_core_get_orig_proj (paint_core,
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src_pickable,
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xmin, ymin, xmax, ymax);
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else
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orig = gimp_paint_core_get_orig_image (paint_core,
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GIMP_DRAWABLE (src_pickable),
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xmin, ymin, xmax, ymax);
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pixel_region_init_temp_buf (&origPR, orig,
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0, 0, xmax - xmin, ymax - ymin);
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}
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/* copy the original image to a tile manager, adding alpha if needed */
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bytes = GIMP_IMAGE_TYPE_BYTES (GIMP_IMAGE_TYPE_WITH_ALPHA (src_type));
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orig_tiles = tile_manager_new (xmax - xmin, ymax - ymin, bytes);
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tile_manager_set_offsets (orig_tiles, xmin, ymin);
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pixel_region_init (&destPR, orig_tiles,
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0, 0, xmax - xmin, ymax - ymin,
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TRUE);
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if (bytes > origPR.bytes)
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add_alpha_region (&origPR, &destPR);
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else
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copy_region (&origPR, &destPR);
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clone->src_area = temp_buf_resize (clone->src_area,
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tile_manager_bpp (orig_tiles),
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0, 0,
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x2d - x1d, y2d - y1d);
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pixel_region_init_temp_buf (&destPR, clone->src_area,
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0, 0,
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x2d - x1d, y2d - y1d);
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gimp_perspective_clone_get_matrix (clone, &matrix);
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gimp_transform_region (src_pickable,
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GIMP_CONTEXT (paint_options),
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orig_tiles,
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&destPR,
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x1d, y1d, x2d, y2d,
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&matrix,
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GIMP_INTERPOLATION_LINEAR, 0, NULL);
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tile_manager_unref (orig_tiles);
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pixel_region_init_temp_buf (srcPR, clone->src_area,
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0, 0, x2d - x1d, y2d - y1d);
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return TRUE;
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}
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/* public functions */
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void
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gimp_perspective_clone_set_transform (GimpPerspectiveClone *clone,
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GimpMatrix3 *transform)
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{
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g_return_if_fail (GIMP_IS_PERSPECTIVE_CLONE (clone));
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g_return_if_fail (transform != NULL);
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clone->transform = *transform;
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clone->transform_inv = clone->transform;
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gimp_matrix3_invert (&clone->transform_inv);
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#if 0
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g_printerr ("%f\t%f\t%f\n%f\t%f\t%f\n%f\t%f\t%f\n\n",
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clone->transform.coeff[0][0],
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clone->transform.coeff[0][1],
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clone->transform.coeff[0][2],
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clone->transform.coeff[1][0],
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clone->transform.coeff[1][1],
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clone->transform.coeff[1][2],
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clone->transform.coeff[2][0],
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clone->transform.coeff[2][1],
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clone->transform.coeff[2][2]);
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#endif
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}
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void
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gimp_perspective_clone_get_source_point (GimpPerspectiveClone *clone,
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gdouble x,
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gdouble y,
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gdouble *newx,
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gdouble *newy)
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{
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gdouble temp_x, temp_y;
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g_return_if_fail (GIMP_IS_PERSPECTIVE_CLONE (clone));
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g_return_if_fail (newx != NULL);
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g_return_if_fail (newy != NULL);
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gimp_matrix3_transform_point (&clone->transform_inv,
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x, y, &temp_x, &temp_y);
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#if 0
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/* Get the offset of each pixel in destination area from the
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* destination pixel in front view perspective
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*/
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offset_x_fv = temp_x - clone->dest_x_fv;
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offset_y_fv = temp_y - clone->dest_y_fv;
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/* Get the source pixel in front view perspective */
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temp_x = offset_x_fv + clone->src_x_fv;
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temp_y = offset_y_fv + clone->src_y_fv;
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#endif
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temp_x += clone->src_x_fv - clone->dest_x_fv;
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temp_y += clone->src_y_fv - clone->dest_y_fv;
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/* Convert the source pixel to perspective view */
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gimp_matrix3_transform_point (&clone->transform,
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temp_x, temp_y, newx, newy);
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}
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/* private functions */
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static void
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gimp_perspective_clone_get_matrix (GimpPerspectiveClone *clone,
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GimpMatrix3 *matrix)
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{
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GimpMatrix3 temp;
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gimp_matrix3_identity (&temp);
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gimp_matrix3_translate (&temp,
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clone->dest_x_fv - clone->src_x_fv,
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clone->dest_y_fv - clone->src_y_fv);
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*matrix = clone->transform_inv;
|
|
gimp_matrix3_mult (&temp, matrix);
|
|
gimp_matrix3_mult (&clone->transform, matrix);
|
|
}
|