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PIKApp/app/tools/pikanpointdeformationtool.c

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/* PIKA - Photo and Image Kooker Application
* a rebranding of The GNU Image Manipulation Program (created with heckimp)
* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
*
* Original copyright, applying to most contents (license remains unchanged):
*
* pikanpointdeformationtool.c
* Copyright (C) 2013 Marek Dvoroznak <dvoromar@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gegl.h>
#include <gegl-plugin.h>
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#include <npd/npd_common.h>
#include "libpikamath/pikamath.h"
#include "libpikawidgets/pikawidgets.h"
#include "tools-types.h"
#include "config/pikaguiconfig.h" /* playground */
#include "gegl/pika-gegl-utils.h"
#include "gegl/pika-gegl-apply-operation.h"
#include "core/pika.h"
#include "core/pikadrawable.h"
#include "core/pikaimage.h"
#include "core/pikaprogress.h"
#include "core/pikaprojection.h"
#include "widgets/pikahelp-ids.h"
#include "widgets/pikawidgets-utils.h"
#include "display/pikadisplay.h"
#include "display/pikadisplayshell.h"
#include "display/pikacanvasbufferpreview.h"
#include "pikanpointdeformationtool.h"
#include "pikanpointdeformationoptions.h"
#include "pikatoolcontrol.h"
#include "pikatooloptions-gui.h"
#include "pika-intl.h"
//#define PIKA_NPD_DEBUG
#define PIKA_NPD_MAXIMUM_DEFORMATION_DELAY 100000 /* 100000 microseconds == 10 FPS */
#define PIKA_NPD_DRAW_INTERVAL 50 /* 50 milliseconds == 20 FPS */
static void pika_n_point_deformation_tool_start (PikaNPointDeformationTool *npd_tool,
PikaDisplay *display);
static void pika_n_point_deformation_tool_halt (PikaNPointDeformationTool *npd_tool);
static void pika_n_point_deformation_tool_commit (PikaNPointDeformationTool *npd_tool);
static void pika_n_point_deformation_tool_set_options (PikaNPointDeformationTool *npd_tool,
PikaNPointDeformationOptions *npd_options);
static void pika_n_point_deformation_tool_options_notify (PikaTool *tool,
PikaToolOptions *options,
const GParamSpec *pspec);
static void pika_n_point_deformation_tool_button_press (PikaTool *tool,
const PikaCoords *coords,
guint32 time,
GdkModifierType state,
PikaButtonPressType press_type,
PikaDisplay *display);
static void pika_n_point_deformation_tool_button_release (PikaTool *tool,
const PikaCoords *coords,
guint32 time,
GdkModifierType state,
PikaButtonReleaseType release_type,
PikaDisplay *display);
static gboolean pika_n_point_deformation_tool_key_press (PikaTool *tool,
GdkEventKey *kevent,
PikaDisplay *display);
static void pika_n_point_deformation_tool_modifier_key (PikaTool *tool,
GdkModifierType key,
gboolean press,
GdkModifierType state,
PikaDisplay *display);
static void pika_n_point_deformation_tool_cursor_update (PikaTool *tool,
const PikaCoords *coords,
GdkModifierType state,
PikaDisplay *display);
static void pika_n_point_deformation_tool_draw (PikaDrawTool *draw_tool);
static void pika_n_point_deformation_tool_control (PikaTool *tool,
PikaToolAction action,
PikaDisplay *display);
static void pika_n_point_deformation_tool_oper_update (PikaTool *tool,
const PikaCoords *coords,
GdkModifierType state,
gboolean proximity,
PikaDisplay *display);
static void pika_n_point_deformation_tool_motion (PikaTool *tool,
const PikaCoords *coords,
guint32 time,
GdkModifierType state,
PikaDisplay *display);
static void pika_n_point_deformation_tool_clear_selected_points_list
(PikaNPointDeformationTool *npd_tool);
static gboolean pika_n_point_deformation_tool_add_cp_to_selection (PikaNPointDeformationTool *npd_tool,
NPDControlPoint *cp);
static gboolean pika_n_point_deformation_tool_is_cp_in_area (NPDControlPoint *cp,
gfloat x0,
gfloat y0,
gfloat x1,
gfloat y1,
gfloat offset_x,
gfloat offset_y,
gfloat cp_radius);
static void pika_n_point_deformation_tool_remove_cp_from_selection
(PikaNPointDeformationTool *npd_tool,
NPDControlPoint *cp);
static gpointer pika_n_point_deformation_tool_deform_thread_func (gpointer data);
static gboolean pika_n_point_deformation_tool_canvas_update_timeout (PikaNPointDeformationTool *npd_tool);
static void pika_n_point_deformation_tool_perform_deformation (PikaNPointDeformationTool *npd_tool);
static void pika_n_point_deformation_tool_halt_threads (PikaNPointDeformationTool *npd_tool);
static void pika_n_point_deformation_tool_apply_deformation (PikaNPointDeformationTool *npd_tool);
#ifdef PIKA_NPD_DEBUG
#define pika_npd_debug(x) g_printf x
#else
#define pika_npd_debug(x)
#endif
G_DEFINE_TYPE (PikaNPointDeformationTool, pika_n_point_deformation_tool,
PIKA_TYPE_DRAW_TOOL)
#define parent_class pika_n_point_deformation_tool_parent_class
void
pika_n_point_deformation_tool_register (PikaToolRegisterCallback callback,
gpointer data)
{
/* we should not know that "data" is a Gimp*, but what the heck this
* is experimental playground stuff
*/
if (PIKA_GUI_CONFIG (PIKA (data)->config)->playground_npd_tool)
(* callback) (PIKA_TYPE_N_POINT_DEFORMATION_TOOL,
PIKA_TYPE_N_POINT_DEFORMATION_OPTIONS,
pika_n_point_deformation_options_gui,
0,
"pika-n-point-deformation-tool",
_("N-Point Deformation"),
_("N-Point Deformation Tool: Rubber-like deformation of "
"image using points"),
N_("_N-Point Deformation"), "<shift>N",
NULL, PIKA_HELP_TOOL_N_POINT_DEFORMATION,
PIKA_ICON_TOOL_N_POINT_DEFORMATION,
data);
}
static void
pika_n_point_deformation_tool_class_init (PikaNPointDeformationToolClass *klass)
{
PikaToolClass *tool_class = PIKA_TOOL_CLASS (klass);
PikaDrawToolClass *draw_tool_class = PIKA_DRAW_TOOL_CLASS (klass);
tool_class->options_notify = pika_n_point_deformation_tool_options_notify;
tool_class->button_press = pika_n_point_deformation_tool_button_press;
tool_class->button_release = pika_n_point_deformation_tool_button_release;
tool_class->key_press = pika_n_point_deformation_tool_key_press;
tool_class->modifier_key = pika_n_point_deformation_tool_modifier_key;
tool_class->control = pika_n_point_deformation_tool_control;
tool_class->motion = pika_n_point_deformation_tool_motion;
tool_class->oper_update = pika_n_point_deformation_tool_oper_update;
tool_class->cursor_update = pika_n_point_deformation_tool_cursor_update;
draw_tool_class->draw = pika_n_point_deformation_tool_draw;
}
static void
pika_n_point_deformation_tool_init (PikaNPointDeformationTool *npd_tool)
{
PikaTool *tool = PIKA_TOOL (npd_tool);
pika_tool_control_set_precision (tool->control,
PIKA_CURSOR_PRECISION_SUBPIXEL);
pika_tool_control_set_tool_cursor (tool->control,
PIKA_TOOL_CURSOR_PERSPECTIVE);
pika_tool_control_set_preserve (tool->control, FALSE);
pika_tool_control_set_wants_click (tool->control, TRUE);
pika_tool_control_set_wants_all_key_events (tool->control, TRUE);
pika_tool_control_set_handle_empty_image (tool->control, FALSE);
pika_tool_control_set_dirty_mask (tool->control,
PIKA_DIRTY_IMAGE |
PIKA_DIRTY_IMAGE_STRUCTURE |
PIKA_DIRTY_DRAWABLE |
PIKA_DIRTY_SELECTION |
PIKA_DIRTY_ACTIVE_DRAWABLE);
}
static void
pika_n_point_deformation_tool_control (PikaTool *tool,
PikaToolAction action,
PikaDisplay *display)
{
PikaNPointDeformationTool *npd_tool = PIKA_N_POINT_DEFORMATION_TOOL (tool);
switch (action)
{
case PIKA_TOOL_ACTION_PAUSE:
case PIKA_TOOL_ACTION_RESUME:
break;
case PIKA_TOOL_ACTION_HALT:
pika_n_point_deformation_tool_halt (npd_tool);
break;
case PIKA_TOOL_ACTION_COMMIT:
pika_n_point_deformation_tool_commit (npd_tool);
break;
}
PIKA_TOOL_CLASS (parent_class)->control (tool, action, display);
}
static void
pika_n_point_deformation_tool_start (PikaNPointDeformationTool *npd_tool,
PikaDisplay *display)
{
PikaTool *tool = PIKA_TOOL (npd_tool);
PikaNPointDeformationOptions *npd_options;
PikaImage *image;
GeglBuffer *source_buffer;
GeglBuffer *preview_buffer;
NPDModel *model;
npd_options = PIKA_N_POINT_DEFORMATION_TOOL_GET_OPTIONS (npd_tool);
pika_tool_control (tool, PIKA_TOOL_ACTION_HALT, display);
image = pika_display_get_image (display);
tool->display = display;
g_list_free (tool->drawables);
tool->drawables = pika_image_get_selected_drawables (image);
npd_tool->active = TRUE;
g_return_if_fail (g_list_length (tool->drawables) == 1);
/* create GEGL graph */
source_buffer = pika_drawable_get_buffer (tool->drawables->data);
preview_buffer = gegl_buffer_new (gegl_buffer_get_extent (source_buffer),
babl_format ("cairo-ARGB32"));
npd_tool->graph = gegl_node_new ();
npd_tool->source = gegl_node_new_child (npd_tool->graph,
"operation", "gegl:buffer-source",
"buffer", source_buffer,
NULL);
npd_tool->npd_node = gegl_node_new_child (npd_tool->graph,
"operation", "gegl:npd",
NULL);
npd_tool->sink = gegl_node_new_child (npd_tool->graph,
"operation", "gegl:write-buffer",
"buffer", preview_buffer,
NULL);
gegl_node_link_many (npd_tool->source,
npd_tool->npd_node,
npd_tool->sink,
NULL);
/* initialize some options */
g_object_set (G_OBJECT (npd_options), "mesh-visible", TRUE, NULL);
pika_n_point_deformation_options_set_sensitivity (npd_options, TRUE);
/* compute and get model */
gegl_node_process (npd_tool->npd_node);
gegl_node_get (npd_tool->npd_node, "model", &model, NULL);
npd_tool->model = model;
npd_tool->preview_buffer = preview_buffer;
npd_tool->selected_cp = NULL;
npd_tool->hovering_cp = NULL;
npd_tool->selected_cps = NULL;
npd_tool->rubber_band = FALSE;
npd_tool->lattice_points = g_new (PikaVector2,
5 * model->hidden_model->num_of_bones);
pika_item_get_offset (PIKA_ITEM (tool->drawables->data),
&npd_tool->offset_x, &npd_tool->offset_y);
pika_npd_debug (("offset: %f %f\n", npd_tool->offset_x, npd_tool->offset_y));
pika_draw_tool_start (PIKA_DRAW_TOOL (npd_tool), display);
pika_n_point_deformation_tool_perform_deformation (npd_tool);
/* hide original image */
pika_item_set_visible (PIKA_ITEM (tool->drawables->data), FALSE, FALSE);
pika_image_flush (image);
/* create and start a deformation thread */
npd_tool->deform_thread =
g_thread_new ("deform thread",
(GThreadFunc) pika_n_point_deformation_tool_deform_thread_func,
npd_tool);
/* create and start canvas update timeout */
npd_tool->draw_timeout_id =
gdk_threads_add_timeout_full (G_PRIORITY_DEFAULT_IDLE,
PIKA_NPD_DRAW_INTERVAL,
(GSourceFunc) pika_n_point_deformation_tool_canvas_update_timeout,
npd_tool,
NULL);
}
static void
pika_n_point_deformation_tool_commit (PikaNPointDeformationTool *npd_tool)
{
PikaTool *tool = PIKA_TOOL (npd_tool);
if (npd_tool->active)
{
pika_n_point_deformation_tool_halt_threads (npd_tool);
pika_tool_control_push_preserve (tool->control, TRUE);
pika_n_point_deformation_tool_apply_deformation (npd_tool);
pika_tool_control_pop_preserve (tool->control);
/* show original/deformed image */
pika_item_set_visible (PIKA_ITEM (tool->drawables->data), TRUE, FALSE);
pika_image_flush (pika_display_get_image (tool->display));
npd_tool->active = FALSE;
}
}
static void
pika_n_point_deformation_tool_halt (PikaNPointDeformationTool *npd_tool)
{
PikaTool *tool = PIKA_TOOL (npd_tool);
PikaDrawTool *draw_tool = PIKA_DRAW_TOOL (npd_tool);
PikaNPointDeformationOptions *npd_options;
npd_options = PIKA_N_POINT_DEFORMATION_TOOL_GET_OPTIONS (npd_tool);
if (npd_tool->active)
{
pika_n_point_deformation_tool_halt_threads (npd_tool);
/* show original/deformed image */
pika_item_set_visible (PIKA_ITEM (tool->drawables->data), TRUE, FALSE);
pika_image_flush (pika_display_get_image (tool->display));
/* disable some options */
pika_n_point_deformation_options_set_sensitivity (npd_options, FALSE);
npd_tool->active = FALSE;
}
if (pika_draw_tool_is_active (draw_tool))
pika_draw_tool_stop (draw_tool);
pika_n_point_deformation_tool_clear_selected_points_list (npd_tool);
g_clear_object (&npd_tool->graph);
npd_tool->source = NULL;
npd_tool->npd_node = NULL;
npd_tool->sink = NULL;
g_clear_object (&npd_tool->preview_buffer);
g_clear_pointer (&npd_tool->lattice_points, g_free);
tool->display = NULL;
g_list_free (tool->drawables);
tool->drawables = NULL;
}
static void
pika_n_point_deformation_tool_set_options (PikaNPointDeformationTool *npd_tool,
PikaNPointDeformationOptions *npd_options)
{
gegl_node_set (npd_tool->npd_node,
"square-size", (gint) npd_options->square_size,
"rigidity", (gint) npd_options->rigidity,
"asap-deformation", npd_options->asap_deformation,
"mls-weights", npd_options->mls_weights,
"mls-weights-alpha", npd_options->mls_weights_alpha,
NULL);
}
static void
pika_n_point_deformation_tool_options_notify (PikaTool *tool,
PikaToolOptions *options,
const GParamSpec *pspec)
{
PikaNPointDeformationTool *npd_tool = PIKA_N_POINT_DEFORMATION_TOOL (tool);
PikaNPointDeformationOptions *npd_options = PIKA_N_POINT_DEFORMATION_OPTIONS (options);
PikaDrawTool *draw_tool = PIKA_DRAW_TOOL (tool);
PIKA_TOOL_CLASS (parent_class)->options_notify (tool, options, pspec);
if (! npd_tool->active)
return;
pika_draw_tool_pause (draw_tool);
pika_npd_debug (("npd options notify\n"));
pika_n_point_deformation_tool_set_options (npd_tool, npd_options);
pika_draw_tool_resume (draw_tool);
}
static gboolean
pika_n_point_deformation_tool_key_press (PikaTool *tool,
GdkEventKey *kevent,
PikaDisplay *display)
{
PikaNPointDeformationTool *npd_tool = PIKA_N_POINT_DEFORMATION_TOOL (tool);
switch (kevent->keyval)
{
case GDK_KEY_BackSpace:
/* if there is at least one control point, remove last added
* control point
*/
if (npd_tool->model &&
npd_tool->model->control_points &&
npd_tool->model->control_points->len > 0)
{
GArray *cps = npd_tool->model->control_points;
NPDControlPoint *cp = &g_array_index (cps, NPDControlPoint,
cps->len - 1);
pika_npd_debug (("removing last cp %p\n", cp));
pika_n_point_deformation_tool_remove_cp_from_selection (npd_tool, cp);
npd_remove_control_point (npd_tool->model, cp);
}
break;
case GDK_KEY_Delete:
if (npd_tool->model &&
npd_tool->selected_cps)
{
/* if there is at least one selected control point, remove it */
npd_remove_control_points (npd_tool->model, npd_tool->selected_cps);
pika_n_point_deformation_tool_clear_selected_points_list (npd_tool);
}
break;
case GDK_KEY_Return:
case GDK_KEY_KP_Enter:
case GDK_KEY_ISO_Enter:
pika_tool_control (tool, PIKA_TOOL_ACTION_COMMIT, display);
break;
case GDK_KEY_Escape:
pika_tool_control (tool, PIKA_TOOL_ACTION_HALT, display);
break;
default:
return FALSE;
}
return TRUE;
}
static void
pika_n_point_deformation_tool_modifier_key (PikaTool *tool,
GdkModifierType key,
gboolean press,
GdkModifierType state,
PikaDisplay *display)
{
}
static void
pika_n_point_deformation_tool_cursor_update (PikaTool *tool,
const PikaCoords *coords,
GdkModifierType state,
PikaDisplay *display)
{
PikaNPointDeformationTool *npd_tool = PIKA_N_POINT_DEFORMATION_TOOL (tool);
PikaCursorModifier modifier = PIKA_CURSOR_MODIFIER_PLUS;
if (! npd_tool->active)
{
modifier = PIKA_CURSOR_MODIFIER_NONE;
}
else if (npd_tool->hovering_cp)
{
modifier = PIKA_CURSOR_MODIFIER_MOVE;
}
pika_tool_control_set_cursor_modifier (tool->control, modifier);
PIKA_TOOL_CLASS (parent_class)->cursor_update (tool, coords, state, display);
}
static void
pika_n_point_deformation_tool_clear_selected_points_list (PikaNPointDeformationTool *npd_tool)
{
if (npd_tool->selected_cps)
{
g_list_free (npd_tool->selected_cps);
npd_tool->selected_cps = NULL;
}
}
static gboolean
pika_n_point_deformation_tool_add_cp_to_selection (PikaNPointDeformationTool *npd_tool,
NPDControlPoint *cp)
{
if (! g_list_find (npd_tool->selected_cps, cp))
{
npd_tool->selected_cps = g_list_append (npd_tool->selected_cps, cp);
return TRUE;
}
return FALSE;
}
static void
pika_n_point_deformation_tool_remove_cp_from_selection (PikaNPointDeformationTool *npd_tool,
NPDControlPoint *cp)
{
npd_tool->selected_cps = g_list_remove (npd_tool->selected_cps, cp);
}
static void
pika_n_point_deformation_tool_button_press (PikaTool *tool,
const PikaCoords *coords,
guint32 time,
GdkModifierType state,
PikaButtonPressType press_type,
PikaDisplay *display)
{
PikaNPointDeformationTool *npd_tool = PIKA_N_POINT_DEFORMATION_TOOL (tool);
if (display != tool->display)
{
/* this is the first click on the drawable - just start the tool */
pika_n_point_deformation_tool_start (npd_tool, display);
}
npd_tool->selected_cp = NULL;
if (press_type == PIKA_BUTTON_PRESS_NORMAL)
{
NPDControlPoint *cp = npd_tool->hovering_cp;
if (cp)
{
/* there is a control point at cursor's position */
npd_tool->selected_cp = cp;
if (! g_list_find (npd_tool->selected_cps, cp))
{
/* control point isn't selected, so we can add it to the
* list of selected control points
*/
if (! (state & pika_get_extend_selection_mask ()))
{
/* <SHIFT> isn't pressed, so this isn't a
* multiselection - clear the list of selected
* control points
*/
pika_n_point_deformation_tool_clear_selected_points_list (npd_tool);
}
pika_n_point_deformation_tool_add_cp_to_selection (npd_tool, cp);
}
else if (state & pika_get_extend_selection_mask ())
{
/* control point is selected and <SHIFT> is pressed -
* remove control point from selected points
*/
pika_n_point_deformation_tool_remove_cp_from_selection (npd_tool,
cp);
}
}
npd_tool->start_x = coords->x;
npd_tool->start_y = coords->y;
npd_tool->last_x = coords->x;
npd_tool->last_y = coords->y;
}
pika_tool_control_activate (tool->control);
}
static gboolean
pika_n_point_deformation_tool_is_cp_in_area (NPDControlPoint *cp,
gfloat x0,
gfloat y0,
gfloat x1,
gfloat y1,
gfloat offset_x,
gfloat offset_y,
gfloat cp_radius)
{
NPDPoint p = cp->point;
p.x += offset_x;
p.y += offset_y;
return p.x >= x0 - cp_radius && p.x <= x1 + cp_radius &&
p.y >= y0 - cp_radius && p.y <= y1 + cp_radius;
}
static void
pika_n_point_deformation_tool_button_release (PikaTool *tool,
const PikaCoords *coords,
guint32 time,
GdkModifierType state,
PikaButtonReleaseType release_type,
PikaDisplay *display)
{
PikaNPointDeformationTool *npd_tool = PIKA_N_POINT_DEFORMATION_TOOL (tool);
pika_tool_control_halt (tool->control);
pika_draw_tool_pause (PIKA_DRAW_TOOL (npd_tool));
if (release_type == PIKA_BUTTON_RELEASE_CLICK)
{
if (! npd_tool->hovering_cp)
{
NPDPoint p;
pika_npd_debug (("cp doesn't exist, adding\n"));
p.x = coords->x - npd_tool->offset_x;
p.y = coords->y - npd_tool->offset_y;
npd_add_control_point (npd_tool->model, &p);
}
}
else if (release_type == PIKA_BUTTON_RELEASE_NORMAL)
{
if (npd_tool->rubber_band)
{
GArray *cps = npd_tool->model->control_points;
gint x0 = MIN (npd_tool->start_x, npd_tool->cursor_x);
gint y0 = MIN (npd_tool->start_y, npd_tool->cursor_y);
gint x1 = MAX (npd_tool->start_x, npd_tool->cursor_x);
gint y1 = MAX (npd_tool->start_y, npd_tool->cursor_y);
gint i;
if (! (state & pika_get_extend_selection_mask ()))
{
/* <SHIFT> isn't pressed, so we want a clear selection */
pika_n_point_deformation_tool_clear_selected_points_list (npd_tool);
}
for (i = 0; i < cps->len; i++)
{
NPDControlPoint *cp = &g_array_index (cps, NPDControlPoint, i);
if (pika_n_point_deformation_tool_is_cp_in_area (cp,
x0, y0,
x1, y1,
npd_tool->offset_x,
npd_tool->offset_y,
npd_tool->cp_scaled_radius))
{
/* control point is situated in an area defined by
* rubber band
*/
pika_n_point_deformation_tool_add_cp_to_selection (npd_tool,
cp);
pika_npd_debug (("%p selected\n", cp));
}
}
}
}
else if (release_type == PIKA_BUTTON_RELEASE_CANCEL)
{
pika_npd_debug (("pika_button_release_cancel\n"));
}
npd_tool->rubber_band = FALSE;
pika_draw_tool_resume (PIKA_DRAW_TOOL (npd_tool));
}
static void
pika_n_point_deformation_tool_oper_update (PikaTool *tool,
const PikaCoords *coords,
GdkModifierType state,
gboolean proximity,
PikaDisplay *display)
{
PikaNPointDeformationTool *npd_tool = PIKA_N_POINT_DEFORMATION_TOOL (tool);
PikaDrawTool *draw_tool = PIKA_DRAW_TOOL (tool);
pika_draw_tool_pause (draw_tool);
if (npd_tool->active)
{
NPDModel *model = npd_tool->model;
PikaDisplayShell *shell = pika_display_get_shell (display);
NPDPoint p;
npd_tool->cp_scaled_radius = model->control_point_radius / shell->scale_x;
p.x = coords->x - npd_tool->offset_x;
p.y = coords->y - npd_tool->offset_y;
npd_tool->hovering_cp =
npd_get_control_point_with_radius_at (model,
&p,
npd_tool->cp_scaled_radius);
}
npd_tool->cursor_x = coords->x;
npd_tool->cursor_y = coords->y;
pika_draw_tool_resume (draw_tool);
}
static void
pika_n_point_deformation_tool_prepare_lattice (PikaNPointDeformationTool *npd_tool)
{
NPDHiddenModel *hm = npd_tool->model->hidden_model;
PikaVector2 *points = npd_tool->lattice_points;
gint i, j;
for (i = 0; i < hm->num_of_bones; i++)
{
NPDBone *bone = &hm->current_bones[i];
for (j = 0; j < 4; j++)
pika_vector2_set (&points[5 * i + j], bone->points[j].x, bone->points[j].y);
pika_vector2_set (&points[5 * i + j], bone->points[0].x, bone->points[0].y);
}
}
static void
pika_n_point_deformation_tool_draw_lattice (PikaNPointDeformationTool *npd_tool)
{
PikaVector2 *points = npd_tool->lattice_points;
gint n_squares = npd_tool->model->hidden_model->num_of_bones;
gint i;
for (i = 0; i < n_squares; i++)
pika_draw_tool_add_lines (PIKA_DRAW_TOOL (npd_tool),
&points[5 * i], 5, NULL, FALSE);
}
static void
pika_n_point_deformation_tool_draw (PikaDrawTool *draw_tool)
{
PikaNPointDeformationTool *npd_tool;
PikaNPointDeformationOptions *npd_options;
NPDModel *model;
gint x0, y0, x1, y1;
gint i;
npd_tool = PIKA_N_POINT_DEFORMATION_TOOL (draw_tool);
npd_options = PIKA_N_POINT_DEFORMATION_TOOL_GET_OPTIONS (npd_tool);
model = npd_tool->model;
g_return_if_fail (model != NULL);
/* draw lattice */
if (npd_options->mesh_visible)
pika_n_point_deformation_tool_draw_lattice (npd_tool);
x0 = MIN (npd_tool->start_x, npd_tool->cursor_x);
y0 = MIN (npd_tool->start_y, npd_tool->cursor_y);
x1 = MAX (npd_tool->start_x, npd_tool->cursor_x);
y1 = MAX (npd_tool->start_y, npd_tool->cursor_y);
for (i = 0; i < model->control_points->len; i++)
{
NPDControlPoint *cp = &g_array_index (model->control_points,
NPDControlPoint, i);
NPDPoint p = cp->point;
PikaHandleType handle_type;
p.x += npd_tool->offset_x;
p.y += npd_tool->offset_y;
handle_type = PIKA_HANDLE_CIRCLE;
/* check if cursor is hovering over a control point or if a
* control point is situated in an area defined by rubber band
*/
if (cp == npd_tool->hovering_cp ||
(npd_tool->rubber_band &&
pika_n_point_deformation_tool_is_cp_in_area (cp,
x0, y0,
x1, y1,
npd_tool->offset_x,
npd_tool->offset_y,
npd_tool->cp_scaled_radius)))
{
handle_type = PIKA_HANDLE_FILLED_CIRCLE;
}
pika_draw_tool_add_handle (draw_tool,
handle_type,
p.x, p.y,
PIKA_TOOL_HANDLE_SIZE_CIRCLE,
PIKA_TOOL_HANDLE_SIZE_CIRCLE,
PIKA_HANDLE_ANCHOR_CENTER);
if (g_list_find (npd_tool->selected_cps, cp))
{
pika_draw_tool_add_handle (draw_tool,
PIKA_HANDLE_SQUARE,
p.x, p.y,
PIKA_TOOL_HANDLE_SIZE_CIRCLE,
PIKA_TOOL_HANDLE_SIZE_CIRCLE,
PIKA_HANDLE_ANCHOR_CENTER);
}
}
if (npd_tool->rubber_band)
{
/* draw a rubber band */
pika_draw_tool_add_rectangle (draw_tool, FALSE,
x0, y0, x1 - x0, y1 - y0);
}
if (npd_tool->preview_buffer)
{
PikaCanvasItem *item;
item = pika_canvas_buffer_preview_new (pika_display_get_shell (draw_tool->display),
npd_tool->preview_buffer);
pika_draw_tool_add_preview (draw_tool, item);
g_object_unref (item);
}
PIKA_DRAW_TOOL_CLASS (parent_class)->draw (draw_tool);
}
static void
pika_n_point_deformation_tool_motion (PikaTool *tool,
const PikaCoords *coords,
guint32 time,
GdkModifierType state,
PikaDisplay *display)
{
PikaNPointDeformationTool *npd_tool = PIKA_N_POINT_DEFORMATION_TOOL (tool);
PikaDrawTool *draw_tool = PIKA_DRAW_TOOL (tool);
pika_draw_tool_pause (draw_tool);
if (npd_tool->selected_cp)
{
GList *list;
gdouble shift_x = coords->x - npd_tool->last_x;
gdouble shift_y = coords->y - npd_tool->last_y;
for (list = npd_tool->selected_cps; list; list = g_list_next (list))
{
NPDControlPoint *cp = list->data;
cp->point.x += shift_x;
cp->point.y += shift_y;
}
}
else
{
/* activate a rubber band selection */
npd_tool->rubber_band = TRUE;
}
npd_tool->cursor_x = coords->x;
npd_tool->cursor_y = coords->y;
npd_tool->last_x = coords->x;
npd_tool->last_y = coords->y;
pika_draw_tool_resume (draw_tool);
}
static gboolean
pika_n_point_deformation_tool_canvas_update_timeout (PikaNPointDeformationTool *npd_tool)
{
if (! PIKA_TOOL (npd_tool)->drawables->data)
return FALSE;
pika_npd_debug (("canvas update thread\n"));
pika_draw_tool_pause (PIKA_DRAW_TOOL(npd_tool));
pika_draw_tool_resume (PIKA_DRAW_TOOL(npd_tool));
pika_npd_debug (("canvas update thread stop\n"));
return TRUE;
}
static gpointer
pika_n_point_deformation_tool_deform_thread_func (gpointer data)
{
PikaNPointDeformationTool *npd_tool = data;
PikaNPointDeformationOptions *npd_options;
guint64 start, duration;
npd_options = PIKA_N_POINT_DEFORMATION_TOOL_GET_OPTIONS (npd_tool);
npd_tool->deformation_active = TRUE;
while (npd_tool->deformation_active)
{
start = g_get_monotonic_time ();
pika_n_point_deformation_tool_perform_deformation (npd_tool);
if (npd_options->mesh_visible)
pika_n_point_deformation_tool_prepare_lattice (npd_tool);
duration = g_get_monotonic_time () - start;
if (duration < PIKA_NPD_MAXIMUM_DEFORMATION_DELAY)
{
g_usleep (PIKA_NPD_MAXIMUM_DEFORMATION_DELAY - duration);
}
}
pika_npd_debug (("deform thread exit\n"));
return NULL;
}
static void
pika_n_point_deformation_tool_perform_deformation (PikaNPointDeformationTool *npd_tool)
{
GObject *operation;
g_object_get (npd_tool->npd_node,
"gegl-operation", &operation,
NULL);
pika_npd_debug (("gegl_operation_invalidate\n"));
gegl_operation_invalidate (GEGL_OPERATION (operation), NULL, FALSE);
g_object_unref (operation);
pika_npd_debug (("gegl_node_process\n"));
gegl_node_process (npd_tool->sink);
}
static void
pika_n_point_deformation_tool_halt_threads (PikaNPointDeformationTool *npd_tool)
{
if (! npd_tool->deformation_active)
return;
pika_npd_debug (("waiting for deform thread to finish\n"));
npd_tool->deformation_active = FALSE;
/* wait for deformation thread to finish its work */
if (npd_tool->deform_thread)
{
g_thread_join (npd_tool->deform_thread);
npd_tool->deform_thread = NULL;
}
/* remove canvas update timeout */
if (npd_tool->draw_timeout_id)
{
g_source_remove (npd_tool->draw_timeout_id);
npd_tool->draw_timeout_id = 0;
}
pika_npd_debug (("finished\n"));
}
static void
pika_n_point_deformation_tool_apply_deformation (PikaNPointDeformationTool *npd_tool)
{
PikaTool *tool = PIKA_TOOL (npd_tool);
PikaNPointDeformationOptions *npd_options;
GeglBuffer *buffer;
PikaImage *image;
gint width, height, prev;
npd_options = PIKA_N_POINT_DEFORMATION_TOOL_GET_OPTIONS (npd_tool);
image = pika_display_get_image (tool->display);
buffer = pika_drawable_get_buffer (tool->drawables->data);
width = gegl_buffer_get_width (buffer);
height = gegl_buffer_get_height (buffer);
prev = npd_options->rigidity;
npd_options->rigidity = 0;
pika_n_point_deformation_tool_set_options (npd_tool, npd_options);
npd_options->rigidity = prev;
pika_drawable_push_undo (tool->drawables->data, _("N-Point Deformation"), NULL,
0, 0, width, height);
pika_gegl_apply_operation (NULL, NULL, _("N-Point Deformation"),
npd_tool->npd_node,
pika_drawable_get_buffer (tool->drawables->data),
NULL, FALSE);
pika_drawable_update (tool->drawables->data,
0, 0, width, height);
pika_projection_flush (pika_image_get_projection (image));
}
#undef pika_npd_debug
#ifdef PIKA_NPD_DEBUG
#undef PIKA_NPD_DEBUG
#endif
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