mirror of https://github.com/GNOME/gimp.git
537 lines
20 KiB
C
537 lines
20 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 <stdlib.h>
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#include <string.h>
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#include <gdk-pixbuf/gdk-pixbuf.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 "gegl/gimp-gegl-nodes.h"
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#include "gegl/gimp-gegl-utils.h"
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#include "core/gimp.h"
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#include "core/gimp-utils.h"
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#include "core/gimpdrawable.h"
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#include "core/gimperror.h"
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#include "core/gimpimage.h"
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#include "core/gimppattern.h"
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#include "core/gimppickable.h"
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#include "core/gimpsymmetry.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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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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GimpSymmetry *sym,
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GimpPaintState paint_state,
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guint32 time);
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static gboolean gimp_perspective_clone_use_source (GimpSourceCore *source_core,
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GimpSourceOptions *options);
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static GeglBuffer * 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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GeglBuffer *paint_buffer,
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gint paint_buffer_x,
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gint paint_buffer_y,
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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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GeglRectangle *src_rect);
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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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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->paint = gimp_perspective_clone_paint;
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source_core_class->use_source = gimp_perspective_clone_use_source;
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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_paint (GimpPaintCore *paint_core,
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GimpDrawable *drawable,
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GimpPaintOptions *paint_options,
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GimpSymmetry *sym,
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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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GimpContext *context = GIMP_CONTEXT (paint_options);
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GimpCloneOptions *clone_options = GIMP_CLONE_OPTIONS (paint_options);
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GimpSourceOptions *options = GIMP_SOURCE_OPTIONS (paint_options);
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const GimpCoords *coords;
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/* The source is based on the original stroke */
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coords = gimp_symmetry_get_origin (sym);
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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 = floor (coords->x);
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source_core->src_y = floor (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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GeglBuffer *orig_buffer = NULL;
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GeglNode *tile = NULL;
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GeglNode *src_node;
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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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clone->node = gegl_node_new ();
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g_object_set (clone->node,
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"dont-cache", TRUE,
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NULL);
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switch (clone_options->clone_type)
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{
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case GIMP_CLONE_IMAGE:
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{
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GimpPickable *src_pickable;
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GimpImage *src_image;
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GimpImage *dest_image;
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/* If the source image is different from the
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* destination, then we should copy straight from the
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* source image 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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src_pickable = GIMP_PICKABLE (source_core->src_drawable);
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src_image = gimp_pickable_get_image (src_pickable);
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if (options->sample_merged)
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src_pickable = GIMP_PICKABLE (src_image);
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dest_image = gimp_item_get_image (GIMP_ITEM (drawable));
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if ((options->sample_merged &&
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(src_image != dest_image)) ||
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(! options->sample_merged &&
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(source_core->src_drawable != drawable)))
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{
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orig_buffer = gimp_pickable_get_buffer (src_pickable);
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}
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else
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{
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if (options->sample_merged)
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orig_buffer = gimp_paint_core_get_orig_proj (paint_core);
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else
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orig_buffer = gimp_paint_core_get_orig_image (paint_core);
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}
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}
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break;
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case GIMP_CLONE_PATTERN:
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{
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GimpPattern *pattern = gimp_context_get_pattern (context);
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orig_buffer = gimp_pattern_create_buffer (pattern);
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tile = gegl_node_new_child (clone->node,
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"operation", "gegl:tile",
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NULL);
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clone->crop = gegl_node_new_child (clone->node,
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"operation", "gegl:crop",
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NULL);
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}
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break;
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}
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src_node = gegl_node_new_child (clone->node,
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"operation", "gegl:buffer-source",
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"buffer", orig_buffer,
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NULL);
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clone->transform_node =
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gegl_node_new_child (clone->node,
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"operation", "gegl:transform",
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"sampler", GIMP_INTERPOLATION_LINEAR,
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NULL);
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clone->dest_node =
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gegl_node_new_child (clone->node,
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"operation", "gegl:write-buffer",
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NULL);
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if (tile)
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{
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gegl_node_link_many (src_node,
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tile,
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clone->crop,
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clone->transform_node,
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clone->dest_node,
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NULL);
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g_object_unref (orig_buffer);
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}
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else
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{
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gegl_node_link_many (src_node,
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clone->transform_node,
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clone->dest_node,
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NULL);
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}
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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 = floor (coords->x);
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source_core->src_y = floor (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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gint n_strokes;
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gint i;
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n_strokes = gimp_symmetry_get_size (sym);
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for (i = 0; i < n_strokes; i++)
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{
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coords = gimp_symmetry_get_coords (sym, i);
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dest_x = floor (coords->x);
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dest_y = floor (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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}
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gimp_source_core_motion (source_core, drawable, paint_options, sym);
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}
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break;
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case GIMP_PAINT_STATE_FINISH:
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g_clear_object (&clone->node);
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clone->crop = NULL;
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clone->transform_node = NULL;
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clone->dest_node = NULL;
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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_use_source (GimpSourceCore *source_core,
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GimpSourceOptions *options)
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{
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return TRUE;
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}
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static GeglBuffer *
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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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GeglBuffer *paint_buffer,
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gint paint_buffer_x,
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gint paint_buffer_y,
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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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GeglRectangle *src_rect)
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{
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GimpPerspectiveClone *clone = GIMP_PERSPECTIVE_CLONE (source_core);
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GimpCloneOptions *clone_options = GIMP_CLONE_OPTIONS (paint_options);
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GeglBuffer *src_buffer;
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GeglBuffer *dest_buffer;
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const Babl *src_format_alpha;
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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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GimpMatrix3 matrix;
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GimpMatrix3 gegl_matrix;
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src_buffer = gimp_pickable_get_buffer (src_pickable);
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src_format_alpha = gimp_pickable_get_format_with_alpha (src_pickable);
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/* Destination coordinates that will be painted */
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x1d = paint_buffer_x;
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y1d = paint_buffer_y;
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x2d = paint_buffer_x + gegl_buffer_get_width (paint_buffer);
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y2d = paint_buffer_y + gegl_buffer_get_height (paint_buffer);
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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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switch (clone_options->clone_type)
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{
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case GIMP_CLONE_IMAGE:
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if (! gimp_rectangle_intersect (xmin, ymin,
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xmax - xmin, ymax - ymin,
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0, 0,
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gegl_buffer_get_width (src_buffer),
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gegl_buffer_get_height (src_buffer),
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NULL, NULL, NULL, NULL))
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{
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/* if the source area is completely out of the image */
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return NULL;
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}
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break;
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case GIMP_CLONE_PATTERN:
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gegl_node_set (clone->crop,
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"x", (gdouble) xmin,
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"y", (gdouble) ymin,
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"width", (gdouble) xmax - xmin,
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"height", (gdouble) ymax - ymin,
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NULL);
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break;
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}
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dest_buffer = gegl_buffer_new (GEGL_RECTANGLE (0, 0, x2d - x1d, y2d - y1d),
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src_format_alpha);
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gimp_perspective_clone_get_matrix (clone, &matrix);
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gimp_matrix3_identity (&gegl_matrix);
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gimp_matrix3_mult (&matrix, &gegl_matrix);
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gimp_matrix3_translate (&gegl_matrix, -x1d, -y1d);
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gimp_gegl_node_set_matrix (clone->transform_node, &gegl_matrix);
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gegl_node_set (clone->dest_node,
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"buffer", dest_buffer,
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NULL);
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gegl_node_blit (clone->dest_node, 1.0,
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GEGL_RECTANGLE (0, 0, x2d - x1d, y2d - y1d),
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NULL, NULL, 0, GEGL_BLIT_DEFAULT);
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*src_rect = *GEGL_RECTANGLE (0, 0, x2d - x1d, y2d - y1d);
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return dest_buffer;
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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;
|
|
offset_y_fv = temp_y - clone->dest_y_fv;
|
|
|
|
/* Get the source pixel in front view perspective */
|
|
temp_x = offset_x_fv + clone->src_x_fv;
|
|
temp_y = offset_y_fv + clone->src_y_fv;
|
|
#endif
|
|
|
|
temp_x += clone->src_x_fv - clone->dest_x_fv;
|
|
temp_y += clone->src_y_fv - clone->dest_y_fv;
|
|
|
|
/* Convert the source pixel to perspective view */
|
|
gimp_matrix3_transform_point (&clone->transform,
|
|
temp_x, temp_y, newx, newy);
|
|
}
|
|
|
|
|
|
/* private functions */
|
|
|
|
static void
|
|
gimp_perspective_clone_get_matrix (GimpPerspectiveClone *clone,
|
|
GimpMatrix3 *matrix)
|
|
{
|
|
GimpMatrix3 temp;
|
|
|
|
gimp_matrix3_identity (&temp);
|
|
gimp_matrix3_translate (&temp,
|
|
clone->dest_x_fv - clone->src_x_fv,
|
|
clone->dest_y_fv - clone->src_y_fv);
|
|
|
|
*matrix = clone->transform_inv;
|
|
gimp_matrix3_mult (&temp, matrix);
|
|
gimp_matrix3_mult (&clone->transform, matrix);
|
|
}
|