This modifier allows to offset the keyframe animated to get more variations in the animation when reuse the same datablock.master
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/*
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2018, Blender Foundation
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* This is a new part of Blender
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*
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* Contributor(s): Antonio Vazquez
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*
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* ***** END GPL LICENSE BLOCK *****
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*
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*/
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/** \file blender/gpencil_modifiers/intern/MOD_gpenciltime.c
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* \ingroup modifiers
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*/
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#include <stdio.h>
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#include <string.h>
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#include "BLI_utildefines.h"
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#include "DNA_meshdata_types.h"
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#include "DNA_scene_types.h"
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#include "DNA_object_types.h"
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#include "DNA_gpencil_types.h"
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#include "DNA_gpencil_modifier_types.h"
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#include "BKE_colortools.h"
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#include "BKE_context.h"
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#include "BKE_deform.h"
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#include "BKE_gpencil.h"
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#include "BKE_gpencil_modifier.h"
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#include "DEG_depsgraph.h"
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#include "MOD_gpencil_util.h"
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#include "MOD_gpencil_modifiertypes.h"
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static void initData(GpencilModifierData *md)
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{
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TimeGpencilModifierData *gpmd = (TimeGpencilModifierData *)md;
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gpmd->layername[0] = '\0';
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gpmd->offset = 1;
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gpmd->flag |= GP_TIME_KEEP_LOOP;
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}
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static void copyData(const GpencilModifierData *md, GpencilModifierData *target)
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{
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BKE_gpencil_modifier_copyData_generic(md, target);
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}
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static int remapTime(struct GpencilModifierData *md, struct Depsgraph *UNUSED(depsgraph),
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struct Scene *scene, struct Object *ob, struct bGPDlayer *gpl, int cfra)
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{
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TimeGpencilModifierData *mmd = (TimeGpencilModifierData *)md;
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const int sfra = scene->r.sfra;
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const int efra = scene->r.efra;
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const int nfra = cfra + mmd->offset;
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const bool invgpl = mmd->flag & GP_SIMPLIFY_INVERT_LAYER;
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/* omit if filter by layer */
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if (mmd->layername[0] != '\0') {
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if (invgpl == false) {
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if (!STREQ(mmd->layername, gpl->info)) {
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return cfra;
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}
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}
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else {
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if (STREQ(mmd->layername, gpl->info)) {
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return cfra;
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}
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}
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}
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if (mmd->flag & GP_TIME_KEEP_LOOP) {
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/* if the sum of the cfra is out scene frame range, recalc */
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if (cfra + mmd->offset < sfra) {
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const int delta = abs(sfra - nfra);
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return efra - delta + 1;
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}
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else if (cfra + mmd->offset > efra) {
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return nfra - efra + sfra - 1;
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}
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}
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return cfra + mmd->offset;
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}
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GpencilModifierTypeInfo modifierType_Gpencil_Time = {
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/* name */ "Time",
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/* structName */ "TimeGpencilModifierData",
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/* structSize */ sizeof(TimeGpencilModifierData),
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/* type */ eGpencilModifierTypeType_Gpencil,
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/* flags */ eGpencilModifierTypeFlag_Single |
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eGpencilModifierTypeFlag_NoApply,
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/* copyData */ copyData,
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/* deformStroke */ NULL,
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/* generateStrokes */ NULL,
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/* bakeModifier */ NULL,
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/* remapTime */ remapTime,
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/* initData */ initData,
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/* freeData */ NULL,
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/* isDisabled */ NULL,
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/* updateDepsgraph */ NULL,
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/* dependsOnTime */ NULL,
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/* foreachObjectLink */ NULL,
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/* foreachIDLink */ NULL,
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/* foreachTexLink */ NULL,
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};
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