diff options
Diffstat (limited to 'source/blender/io/common/intern/dupli_parent_finder.cc')
-rw-r--r-- | source/blender/io/common/intern/dupli_parent_finder.cc | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/source/blender/io/common/intern/dupli_parent_finder.cc b/source/blender/io/common/intern/dupli_parent_finder.cc new file mode 100644 index 00000000000..73e33eff164 --- /dev/null +++ b/source/blender/io/common/intern/dupli_parent_finder.cc @@ -0,0 +1,104 @@ +/* + * 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) 2020 Blender Foundation. + * All rights reserved. + */ + +#include "dupli_parent_finder.hh" + +#include "BLI_utildefines.h" + +#include <iostream> + +namespace blender::io { + +DupliParentFinder::DupliParentFinder() +{ +} + +DupliParentFinder::~DupliParentFinder() +{ +} + +void DupliParentFinder::insert(const DupliObject *dupli_ob) +{ + dupli_set_.insert(dupli_ob->ob); + + PersistentID dupli_pid(dupli_ob); + pid_to_dupli_[dupli_pid] = dupli_ob; + instancer_pid_to_duplis_[dupli_pid.instancer_pid()].insert(dupli_ob); +} + +bool DupliParentFinder::is_duplicated(const Object *object) const +{ + return dupli_set_.find(object) != dupli_set_.end(); +} + +const DupliObject *DupliParentFinder::find_suitable_export_parent( + const DupliObject *dupli_ob) const +{ + if (dupli_ob->ob->parent != nullptr) { + const DupliObject *parent = find_duplicated_parent(dupli_ob); + if (parent != nullptr) { + return parent; + } + } + + return find_instancer(dupli_ob); +} + +const DupliObject *DupliParentFinder::find_duplicated_parent(const DupliObject *dupli_ob) const +{ + const PersistentID dupli_pid(dupli_ob); + PersistentID parent_pid = dupli_pid.instancer_pid(); + + const Object *parent_ob = dupli_ob->ob->parent; + BLI_assert(parent_ob != nullptr); + + InstancerPIDToDuplisMap::const_iterator found = instancer_pid_to_duplis_.find(parent_pid); + if (found == instancer_pid_to_duplis_.end()) { + /* Unexpected, as there should be at least one entry here, for the dupli_ob itself. */ + return nullptr; + } + + for (const DupliObject *potential_parent_dupli : found->second) { + if (potential_parent_dupli->ob != parent_ob) { + continue; + } + + PersistentID potential_parent_pid(potential_parent_dupli); + if (potential_parent_pid.is_from_same_instancer_as(dupli_pid)) { + return potential_parent_dupli; + } + } + return nullptr; +} + +const DupliObject *DupliParentFinder::find_instancer(const DupliObject *dupli_ob) const +{ + PersistentID dupli_pid(dupli_ob); + PersistentID parent_pid = dupli_pid.instancer_pid(); + + PIDToDupliMap::const_iterator found = pid_to_dupli_.find(parent_pid); + if (found == pid_to_dupli_.end()) { + return nullptr; + } + + const DupliObject *instancer_dupli = found->second; + return instancer_dupli; +} + +} // namespace blender::io |