Differential D11791 Diff 40163 source/blender/editors/armature/pose_backup.cc

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source/blender/editors/armature/pose_backup.cc

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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.
				*/

				/** \file
				* \ingroup edarmature
				*/

				#include "ED_armature.h"

				#include <cstring>

				#include "BLI_listbase.h"

				#include "MEM_guardedalloc.h"

				#include "DNA_action_types.h"
				#include "DNA_armature_types.h"
				#include "DNA_object_types.h"

				#include "BKE_action.h"
				#include "BKE_action.hh"
				#include "BKE_armature.hh"
				#include "BKE_idprop.h"

				using namespace blender::bke;

				/* simple struct for storing backup info for one pose channel */
				struct PoseChannelBackup {
				struct PoseChannelBackup next, prev;

				struct bPoseChannel pchan; / Pose channel this backup is for. */

				struct bPoseChannel olddata; /* Backup of pose channel. */
				struct IDProperty oldprops; / Backup copy (needs freeing) of pose channel's ID properties. */
				};

				struct PoseBackup {
				bool is_bone_selection_relevant;
				ListBase /* PoseChannelBackup* */ backups;
				};

				static PoseBackup pose_backup_create(const Object ob,
				const bAction *action,
				const BoneNameSet &selected_bone_names)
				{
				ListBase backups = {nullptr, nullptr};
				const bool is_bone_selection_relevant = !selected_bone_names.is_empty();

				BoneNameSet backed_up_bone_names;
				/* Make a backup of the given pose channel. */
				auto store_animated_pchans = [&](FCurve * /* unused /, const char bone_name) {
				if (backed_up_bone_names.contains(bone_name)) {
				/* Only backup each bone once. */
				return;
				}

				bPoseChannel *pchan = BKE_pose_channel_find_name(ob->pose, bone_name);
				if (pchan == nullptr) {
				/* FCurve targets non-existent bone. */
				return;
				}

				if (is_bone_selection_relevant && !selected_bone_names.contains(bone_name)) {
				return;
				}

				PoseChannelBackup chan_bak = static_cast<PoseChannelBackup >(
				MEM_callocN(sizeof(*chan_bak), "PoseChannelBackup"));
				chan_bak->pchan = pchan;
				memcpy(&chan_bak->olddata, chan_bak->pchan, sizeof(chan_bak->olddata));

				if (pchan->prop) {
				chan_bak->oldprops = IDP_CopyProperty(pchan->prop);
				}

				BLI_addtail(&backups, chan_bak);
				backed_up_bone_names.add_new(bone_name);
				};

				/* Call `store_animated_pchans()` for each FCurve that targets a bone. */
				BKE_action_find_fcurves_with_bones(action, store_animated_pchans);

				/* PoseBackup is constructed late, so that the above loop can use stack variables. */
				PoseBackup pose_backup = static_cast<PoseBackup >(MEM_callocN(sizeof(*pose_backup), __func__));
				pose_backup->is_bone_selection_relevant = is_bone_selection_relevant;
				pose_backup->backups = backups;
				return pose_backup;
				}

				PoseBackup ED_pose_backup_create_all_bones(const Object ob, const bAction *action)
				{
				return pose_backup_create(ob, action, BoneNameSet());
				}

				PoseBackup ED_pose_backup_create_selected_bones(const Object ob, const bAction *action)
				{
				const bArmature armature = static_cast<const bArmature >(ob->data);
				const BoneNameSet selected_bone_names = BKE_armature_find_selected_bone_names(armature);
				return pose_backup_create(ob, action, selected_bone_names);
				}

				bool ED_pose_backup_is_selection_relevant(const struct PoseBackup *pose_backup)
				{
				return pose_backup->is_bone_selection_relevant;
				}

				void ED_pose_backup_restore(const PoseBackup *pbd)
				{
				LISTBASE_FOREACH (PoseChannelBackup *, chan_bak, &pbd->backups) {
				memcpy(chan_bak->pchan, &chan_bak->olddata, sizeof(chan_bak->olddata));

				if (chan_bak->oldprops) {
				IDP_SyncGroupValues(chan_bak->pchan->prop, chan_bak->oldprops);
				}

				/* TODO: constraints settings aren't restored yet,
				* even though these could change (though not that likely) */
				}
				}

				void ED_pose_backup_free(PoseBackup *pbd)
				{
				LISTBASE_FOREACH_MUTABLE (PoseChannelBackup *, chan_bak, &pbd->backups) {
				if (chan_bak->oldprops) {
				IDP_FreeProperty(chan_bak->oldprops);
				}
				BLI_freelinkN(&pbd->backups, chan_bak);
				}
				MEM_freeN(pbd);
				}