596 lines
22 KiB
C
596 lines
22 KiB
C
/* PIKA - Photo and Image Kooker Application
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* a rebranding of The GNU Image Manipulation Program (created with heckimp)
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* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
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*
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* Original copyright, applying to most contents (license remains unchanged):
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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 <https://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 "libpikabase/pikabase.h"
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#include "libpikamath/pikamath.h"
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#include "paint-types.h"
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#include "gegl/pika-gegl-nodes.h"
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#include "gegl/pika-gegl-utils.h"
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#include "core/pika.h"
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#include "core/pika-utils.h"
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#include "core/pikacontainer.h"
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#include "core/pikadrawable.h"
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#include "core/pikaerror.h"
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#include "core/pikaimage.h"
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#include "core/pikaimage-new.h"
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#include "core/pikapattern.h"
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#include "core/pikapickable.h"
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#include "core/pikasymmetry.h"
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#include "pikaperspectiveclone.h"
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#include "pikaperspectivecloneoptions.h"
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#include "pika-intl.h"
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static void pika_perspective_clone_paint (PikaPaintCore *paint_core,
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GList *drawables,
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PikaPaintOptions *paint_options,
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PikaSymmetry *sym,
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PikaPaintState paint_state,
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guint32 time);
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static gboolean pika_perspective_clone_use_source (PikaSourceCore *source_core,
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PikaSourceOptions *options);
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static GeglBuffer * pika_perspective_clone_get_source (PikaSourceCore *source_core,
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PikaDrawable *drawable,
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PikaPaintOptions *paint_options,
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gboolean self_drawable,
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PikaPickable *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 pika_perspective_clone_get_matrix (PikaPerspectiveClone *clone,
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PikaMatrix3 *matrix);
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G_DEFINE_TYPE (PikaPerspectiveClone, pika_perspective_clone,
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PIKA_TYPE_CLONE)
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#define parent_class pika_perspective_clone_parent_class
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void
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pika_perspective_clone_register (Pika *pika,
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PikaPaintRegisterCallback callback)
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{
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(* callback) (pika,
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PIKA_TYPE_PERSPECTIVE_CLONE,
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PIKA_TYPE_PERSPECTIVE_CLONE_OPTIONS,
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"pika-perspective-clone",
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_("Perspective Clone"),
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"pika-tool-perspective-clone");
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}
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static void
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pika_perspective_clone_class_init (PikaPerspectiveCloneClass *klass)
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{
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PikaPaintCoreClass *paint_core_class = PIKA_PAINT_CORE_CLASS (klass);
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PikaSourceCoreClass *source_core_class = PIKA_SOURCE_CORE_CLASS (klass);
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paint_core_class->paint = pika_perspective_clone_paint;
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source_core_class->use_source = pika_perspective_clone_use_source;
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source_core_class->get_source = pika_perspective_clone_get_source;
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}
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static void
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pika_perspective_clone_init (PikaPerspectiveClone *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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pika_matrix3_identity (&clone->transform);
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pika_matrix3_identity (&clone->transform_inv);
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}
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static void
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pika_perspective_clone_paint (PikaPaintCore *paint_core,
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GList *drawables,
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PikaPaintOptions *paint_options,
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PikaSymmetry *sym,
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PikaPaintState paint_state,
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guint32 time)
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{
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PikaSourceCore *source_core = PIKA_SOURCE_CORE (paint_core);
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PikaPerspectiveClone *clone = PIKA_PERSPECTIVE_CLONE (paint_core);
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PikaContext *context = PIKA_CONTEXT (paint_options);
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PikaCloneOptions *clone_options = PIKA_CLONE_OPTIONS (paint_options);
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PikaSourceOptions *options = PIKA_SOURCE_OPTIONS (paint_options);
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const PikaCoords *coords;
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gboolean sample_merged;
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/* The source is based on the original stroke */
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coords = pika_symmetry_get_origin (sym);
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sample_merged = options->sample_merged && (g_list_length (drawables) > 1);
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switch (paint_state)
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{
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case PIKA_PAINT_STATE_INIT:
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if (source_core->set_source)
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{
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gint src_x = floor (coords->x);
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gint src_y = floor (coords->y);
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g_object_set (options,
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"src-drawables", drawables,
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"src-x", src_x,
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"src-y", src_y,
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NULL);
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/* get source coordinates in front view perspective */
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pika_matrix3_transform_point (&clone->transform_inv,
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src_x,
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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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PikaImage *del_image = NULL;
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GeglBuffer *orig_buffer = NULL;
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GeglNode *tile = NULL;
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if (options->align_mode == PIKA_SOURCE_ALIGN_NO)
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{
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g_object_get (options,
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"src-x", &source_core->orig_src_x,
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"src-y", &source_core->orig_src_y,
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NULL);
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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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"cache-policy", GEGL_CACHE_POLICY_NEVER,
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NULL);
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switch (clone_options->clone_type)
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{
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case PIKA_CLONE_IMAGE:
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{
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PikaPickable *src_pickable = NULL;
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PikaImage *src_image;
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PikaImage *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_image = pika_pickable_get_image (options->src_drawables->data);
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if (sample_merged)
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src_pickable = PIKA_PICKABLE (src_image);
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dest_image = pika_item_get_image (PIKA_ITEM (drawables->data));
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if ((sample_merged &&
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(src_image != dest_image)) ||
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(! sample_merged &&
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g_list_length (options->src_drawables) == 1 &&
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g_list_length (drawables) == 1 &&
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(options->src_drawables != drawables->data)))
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{
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if (! sample_merged)
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src_pickable = PIKA_PICKABLE (options->src_drawables->data);
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orig_buffer = pika_pickable_get_buffer (src_pickable);
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}
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else
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{
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if (sample_merged && paint_core->use_saved_proj)
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orig_buffer = pika_paint_core_get_orig_proj (paint_core);
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else
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orig_buffer = pika_paint_core_get_orig_image (paint_core, drawables->data);
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}
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if (! orig_buffer)
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{
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/* A composited image of the drawables */
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del_image = pika_image_new_from_drawables (src_image->pika, drawables,
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FALSE, FALSE);
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pika_container_remove (src_image->pika->images, PIKA_OBJECT (del_image));
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src_pickable = PIKA_PICKABLE (del_image);
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pika_pickable_flush (src_pickable);
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orig_buffer = pika_pickable_get_buffer (src_pickable);
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}
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}
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break;
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case PIKA_CLONE_PATTERN:
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{
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PikaPattern *pattern = pika_context_get_pattern (context);
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orig_buffer = pika_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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clone->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", PIKA_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 (clone->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 (clone->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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g_clear_object (&del_image);
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}
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break;
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case PIKA_PAINT_STATE_MOTION:
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if (source_core->set_source)
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{
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gint src_x = floor (coords->x);
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gint src_y = floor (coords->y);
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/* If the control key is down, move the src target and return */
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g_object_set (options,
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"src-drawables", drawables,
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"src-x", src_x,
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"src-y", src_y,
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NULL);
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/* get source coordinates in front view perspective */
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pika_matrix3_transform_point (&clone->transform_inv,
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src_x,
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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 src_x;
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gint src_y;
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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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g_object_get (options,
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"src-x", &src_x,
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"src-y", &src_y,
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NULL);
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n_strokes = pika_symmetry_get_size (sym);
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for (i = 0; i < n_strokes; i++)
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{
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coords = pika_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 == PIKA_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 == PIKA_SOURCE_ALIGN_FIXED)
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{
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source_core->offset_x = src_x - dest_x;
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source_core->offset_y = 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 = src_x - dest_x;
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source_core->offset_y = src_y - dest_y;
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/* get destination coordinates in front view perspective */
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pika_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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for (GList *iter = drawables; iter; iter = iter->next)
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pika_source_core_motion (source_core, iter->data, paint_options,
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(g_list_length (drawables) > 1), sym);
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}
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break;
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case PIKA_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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}
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static gboolean
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pika_perspective_clone_use_source (PikaSourceCore *source_core,
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PikaSourceOptions *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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pika_perspective_clone_get_source (PikaSourceCore *source_core,
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PikaDrawable *drawable,
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PikaPaintOptions *paint_options,
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gboolean self_drawable,
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PikaPickable *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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PikaPerspectiveClone *clone = PIKA_PERSPECTIVE_CLONE (source_core);
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PikaCloneOptions *clone_options = PIKA_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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PikaMatrix3 matrix;
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PikaMatrix3 gegl_matrix;
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if (self_drawable)
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src_pickable = PIKA_PICKABLE (drawable);
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src_buffer = pika_pickable_get_buffer (src_pickable);
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src_format_alpha = pika_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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pika_perspective_clone_get_source_point (clone, x1d, y1d, &x1s, &y1s);
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pika_perspective_clone_get_source_point (clone, x1d, y2d, &x2s, &y2s);
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pika_perspective_clone_get_source_point (clone, x2d, y1d, &x3s, &y3s);
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pika_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 PIKA_CLONE_IMAGE:
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if (! pika_rectangle_intersect (xmin, ymin,
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xmax - xmin, ymax - ymin,
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gegl_buffer_get_x (src_buffer),
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gegl_buffer_get_y (src_buffer),
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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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else
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{
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gegl_node_set (clone->src_node,
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"buffer", src_buffer,
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NULL);
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}
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break;
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case PIKA_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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pika_perspective_clone_get_matrix (clone, &matrix);
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pika_matrix3_identity (&gegl_matrix);
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pika_matrix3_mult (&matrix, &gegl_matrix);
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pika_matrix3_translate (&gegl_matrix, -x1d, -y1d);
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pika_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),
|
|
NULL, NULL, 0, GEGL_BLIT_DEFAULT);
|
|
|
|
*src_rect = *GEGL_RECTANGLE (0, 0, x2d - x1d, y2d - y1d);
|
|
|
|
return dest_buffer;
|
|
}
|
|
|
|
|
|
/* public functions */
|
|
|
|
void
|
|
pika_perspective_clone_set_transform (PikaPerspectiveClone *clone,
|
|
PikaMatrix3 *transform)
|
|
{
|
|
g_return_if_fail (PIKA_IS_PERSPECTIVE_CLONE (clone));
|
|
g_return_if_fail (transform != NULL);
|
|
|
|
clone->transform = *transform;
|
|
|
|
clone->transform_inv = clone->transform;
|
|
pika_matrix3_invert (&clone->transform_inv);
|
|
|
|
#if 0
|
|
g_printerr ("%f\t%f\t%f\n%f\t%f\t%f\n%f\t%f\t%f\n\n",
|
|
clone->transform.coeff[0][0],
|
|
clone->transform.coeff[0][1],
|
|
clone->transform.coeff[0][2],
|
|
clone->transform.coeff[1][0],
|
|
clone->transform.coeff[1][1],
|
|
clone->transform.coeff[1][2],
|
|
clone->transform.coeff[2][0],
|
|
clone->transform.coeff[2][1],
|
|
clone->transform.coeff[2][2]);
|
|
#endif
|
|
}
|
|
|
|
void
|
|
pika_perspective_clone_get_source_point (PikaPerspectiveClone *clone,
|
|
gdouble x,
|
|
gdouble y,
|
|
gdouble *newx,
|
|
gdouble *newy)
|
|
{
|
|
gdouble temp_x, temp_y;
|
|
|
|
g_return_if_fail (PIKA_IS_PERSPECTIVE_CLONE (clone));
|
|
g_return_if_fail (newx != NULL);
|
|
g_return_if_fail (newy != NULL);
|
|
|
|
pika_matrix3_transform_point (&clone->transform_inv,
|
|
x, y, &temp_x, &temp_y);
|
|
|
|
#if 0
|
|
/* Get the offset of each pixel in destination area from the
|
|
* destination pixel in front view perspective
|
|
*/
|
|
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 */
|
|
pika_matrix3_transform_point (&clone->transform,
|
|
temp_x, temp_y, newx, newy);
|
|
}
|
|
|
|
|
|
/* private functions */
|
|
|
|
static void
|
|
pika_perspective_clone_get_matrix (PikaPerspectiveClone *clone,
|
|
PikaMatrix3 *matrix)
|
|
{
|
|
PikaMatrix3 temp;
|
|
|
|
pika_matrix3_identity (&temp);
|
|
pika_matrix3_translate (&temp,
|
|
clone->dest_x_fv - clone->src_x_fv,
|
|
clone->dest_y_fv - clone->src_y_fv);
|
|
|
|
*matrix = clone->transform_inv;
|
|
pika_matrix3_mult (&temp, matrix);
|
|
pika_matrix3_mult (&clone->transform, matrix);
|
|
}
|
