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