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/*
* 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 2
* 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, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2008, Blender Foundation
* This is a new part of Blender
* Operators for editing Grease Pencil strokes
*/
/** \file
* \ingroup edgpencil
*/
#include <math.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "DNA_gpencil_types.h"
#include "DNA_view3d_types.h"
#include "BKE_context.h"
#include "BKE_gpencil.h"
#include "BKE_gpencil_curve.h"
#include "BKE_gpencil_geom.h"
#include "BLI_listbase.h"
#include "BLI_math.h"
#include "RNA_access.h"
#include "RNA_define.h"
#include "WM_api.h"
#include "WM_types.h"
#include "ED_gpencil.h"
#include "DEG_depsgraph.h"
#include "gpencil_intern.h"
/* Poll callback for checking if there is an active layer and we are in curve edit mode. */
static bool gpencil_curve_edit_mode_poll(bContext *C)
{
Object *ob = CTX_data_active_object(C);
if ((ob == NULL) || (ob->type != OB_GPENCIL)) {
return false;
}
bGPdata *gpd = (bGPdata *)ob->data;
if (!GPENCIL_CURVE_EDIT_SESSIONS_ON(gpd)) {
return false;
}
bGPDlayer *gpl = BKE_gpencil_layer_active_get(gpd);
return (gpl != NULL);
}
static int gpencil_stroke_enter_editcurve_mode_exec(bContext *C, wmOperator *op)
{
Object *ob = CTX_data_active_object(C);
bGPdata *gpd = ob->data;
float error_threshold = RNA_float_get(op->ptr, "error_threshold");
gpd->curve_edit_threshold = error_threshold;
if (ELEM(NULL, gpd)) {
return OPERATOR_CANCELLED;
}
LISTBASE_FOREACH (bGPDlayer *, gpl, &gpd->layers) {
LISTBASE_FOREACH (bGPDframe *, gpf, &gpl->frames) {
if (gpf == gpl->actframe) {
LISTBASE_FOREACH (bGPDstroke *, gps, &gpf->strokes) {
/* only allow selected and non-converted strokes to be transformed */
if ((gps->flag & GP_STROKE_SELECT && gps->editcurve == NULL) ||
(gps->editcurve != NULL && gps->editcurve->flag & GP_CURVE_NEEDS_STROKE_UPDATE)) {
BKE_gpencil_stroke_editcurve_update(gpd, gpl, gps);
/* Update the selection from the stroke to the curve. */
BKE_gpencil_editcurve_stroke_sync_selection(gpd, gps, gps->editcurve);
gps->flag |= GP_STROKE_NEEDS_CURVE_UPDATE;
BKE_gpencil_stroke_geometry_update(gpd, gps);
}
}
}
}
}
gpd->flag |= GP_DATA_CURVE_EDIT_MODE;
/* notifiers */
DEG_id_tag_update(&gpd->id, ID_RECALC_TRANSFORM | ID_RECALC_GEOMETRY);
WM_event_add_notifier(C, NC_GPENCIL | ND_DATA | NA_EDITED, NULL);
return OPERATOR_FINISHED;
}
void GPENCIL_OT_stroke_enter_editcurve_mode(wmOperatorType *ot)
{
PropertyRNA *prop;
/* identifiers */
ot->name = "Enter curve edit mode";
ot->idname = "GPENCIL_OT_stroke_enter_editcurve_mode";
ot->description = "Called to transform a stroke into a curve";
/* api callbacks */
ot->exec = gpencil_stroke_enter_editcurve_mode_exec;
ot->poll = gpencil_active_layer_poll;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
/* properties */
prop = RNA_def_float(ot->srna,
"error_threshold",
0.1f,
FLT_MIN,
100.0f,
"Error Threshold",
"Threshold on the maximum deviation from the actual stroke",
FLT_MIN,
10.0f);
RNA_def_property_ui_range(prop, FLT_MIN, 10.0f, 0.1f, 5);
}
static int gpencil_editcurve_set_handle_type_exec(bContext *C, wmOperator *op)
{
Object *ob = CTX_data_active_object(C);
bGPdata *gpd = ob->data;
const int handle_type = RNA_enum_get(op->ptr, "type");
if (ELEM(NULL, gpd)) {
return OPERATOR_CANCELLED;
}
GP_EDITABLE_CURVES_BEGIN(gps_iter, C, gpl, gps, gpc)
{
for (int i = 0; i < gpc->tot_curve_points; i++) {
bGPDcurve_point *gpc_pt = &gpc->curve_points[i];
if (gpc_pt->flag & GP_CURVE_POINT_SELECT) {
BezTriple *bezt = &gpc_pt->bezt;
if (bezt->f2 & SELECT) {
bezt->h1 = handle_type;
bezt->h2 = handle_type;
}
else {
if (bezt->f1 & SELECT) {
bezt->h1 = handle_type;
}
if (bezt->f3 & SELECT) {
bezt->h2 = handle_type;
}
}
}
}
BKE_gpencil_editcurve_recalculate_handles(gps);
gps->flag |= GP_STROKE_NEEDS_CURVE_UPDATE;
BKE_gpencil_stroke_geometry_update(gpd, gps);
}
GP_EDITABLE_CURVES_END(gps_iter);
/* notifiers */
DEG_id_tag_update(&gpd->id, ID_RECALC_TRANSFORM | ID_RECALC_GEOMETRY);
WM_event_add_notifier(C, NC_GPENCIL | ND_DATA | NA_EDITED, NULL);
return OPERATOR_FINISHED;
}
void GPENCIL_OT_stroke_editcurve_set_handle_type(wmOperatorType *ot)
{
static const EnumPropertyItem editcurve_handle_type_items[] = {
{HD_FREE, "FREE", 0, "Free", ""},
{HD_AUTO, "AUTOMATIC", 0, "Automatic", ""},
{HD_VECT, "VECTOR", 0, "Vector", ""},
{HD_ALIGN, "ALIGNED", 0, "Aligned", ""},
{0, NULL, 0, NULL, NULL},
};
/* identifiers */
ot->name = "Set handle type";
ot->idname = "GPENCIL_OT_stroke_editcurve_set_handle_type";
ot->description = "Set the type of a edit curve handle";
/* api callbacks */
ot->invoke = WM_menu_invoke;
ot->exec = gpencil_editcurve_set_handle_type_exec;
ot->poll = gpencil_curve_edit_mode_poll;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
/* properties */
ot->prop = RNA_def_enum(ot->srna, "type", editcurve_handle_type_items, 1, "Type", "Spline type");
}
/** \} */
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