text: /*
   * 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 <set>
  
  struct Depsgraph;
  struct ModifierData;
  struct Object;
  struct Scene;
  
  namespace blender::io::alembic {
  
  /**
   * Temporarily all subdivision modifiers on mesh objects.
   * The destructor restores all disabled modifiers.
   *
   * This is used to export unsubdivided meshes to Alembic. It is done in a separate step before the
   * exporter starts iterating over all the frames, so that it only has to happen once per export.
   */
  class SubdivModifierDisabler final {
   private:
    Depsgraph *depsgraph_;
    std::set<ModifierData *> disabled_modifiers_;
  
   public:
    explicit SubdivModifierDisabler(Depsgraph *depsgraph);
    ~SubdivModifierDisabler();
  
    void disable_modifiers();
  
    static ModifierData *get_subdiv_modifier(Scene *scene, Object *ob);
  };
  
  }  // namespace blender::io::alembic
  