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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) 2020 Blender Foundation.
* All rights reserved.
*/
#pragma once
#include "BKE_duplilist.h"
#include "DNA_object_types.h" /* For MAX_DUPLI_RECUR */
#include <array>
#include <optional>
#include <ostream>
namespace blender::io {
/* Wrapper for DupliObject::persistent_id that can act as a map key. */
class PersistentID {
protected:
constexpr static int array_length_ = MAX_DUPLI_RECUR;
typedef std::array<int, array_length_> PIDArray;
PIDArray persistent_id_;
explicit PersistentID(const PIDArray &persistent_id_values);
public:
PersistentID();
explicit PersistentID(const DupliObject *dupli_ob);
/* Return true if the persistent IDs are the same, ignoring the first digit. */
bool is_from_same_instancer_as(const PersistentID &other) const;
/* Construct the persistent ID of this instance's instancer. */
PersistentID instancer_pid() const;
/* Construct a string representation by reversing the persistent ID.
* In case of a duplicator that is duplicated itself as well, this
* results in strings like:
* "3" for the duplicated duplicator, and
* "3-0", "3-1", etc. for its duplis. */
std::string as_object_name_suffix() const;
friend bool operator==(const PersistentID &persistent_id_a, const PersistentID &persistent_id_b);
friend bool operator<(const PersistentID &persistent_id_a, const PersistentID &persistent_id_b);
friend std::ostream &operator<<(std::ostream &os, const PersistentID &persistent_id);
private:
void copy_values_from(const PIDArray &persistent_id_values);
};
} // namespace blender::io
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