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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2020 Blender Foundation. All rights reserved. */
#include "dupli_parent_finder.hh"
#include "BLI_utildefines.h"
#include <iostream>
namespace blender::io {
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
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