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 //------------------------------- -*- C++ -*- -------------------------------//
 // Copyright Celeritas contributors: see top-level COPYRIGHT file for details
 // SPDX-License-Identifier: (Apache-2.0 OR MIT)
 //---------------------------------------------------------------------------//
 //! \file orange/inp/Import.hh
 //---------------------------------------------------------------------------//
 #pragma once
 
 #include <iosfwd>
 #include <string>
 
 #include "corecel/Config.hh"
 
 #include "geocel/detail/LengthUnits.hh"
 #include "orange/OrangeTypes.hh"
 
 namespace celeritas
 {
 namespace inp
 {
 //---------------------------------------------------------------------------//
 //! How to inline volumes used only once
 enum class InlineSingletons
 {
     none,  //!< Never
     untransformed,  //!< Only if not translated nor rotated
     unrotated,  //!< Only if translated
     all,  //!< Always
     size_
 };
 
 //---------------------------------------------------------------------------//
 /*!
  * Construction options for CSG conversion.
  *
  * \warning Currently ORANGE tracking requires:
  * - inline unions to be true (see
  * https://github.com/celeritas-project/celeritas/issues/1260)
  * - implicit_parent_boundary to be true (see
  * https://github.com/celeritas-project/celeritas/issues/2012 )
  *
  * \todo Add IO for this separately; currently only FromGeant is supported.
  */
 struct OrangeGeoFromCsg
 {
     //!@{
     //! \name Problem scale and tolerance
 
     //! Scale factor (input unit length), customizable for unit testing
     double unit_length{celeritas::lengthunits::millimeter};
     //! Construction and tracking tolerance (native units)
     Tolerance<> tol;
 
     //!@}
 
     //!@{
     //! \name Structural conversion
 
     //! Remove bounding surfaces from lower-level universes
     bool implicit_parent_boundary{true};
 
     //! Logic expression notation for runtime: simplified if infix
     LogicNotation logic{LogicNotation::infix};
 
     //!@}
 
     //!@{
     //! \name Debug output
 
     //! Write converted Geant4 object structure to a JSON file
     std::string objects_output_file;
     //! Write constructed CSG surfaces and tree to a JSON file
     std::string csg_output_file;
     //! Write final org.json to a JSON file
     std::string org_output_file;
 
     //!@}
 };
 
 //---------------------------------------------------------------------------//
 /*!
  * Construction options for Geant4 conversion.
  *
  * Note that most of these should \em never be touched when running an actual
  * problem. If the length unit is changed, the resulting geometry is
  * inconsistent with Geant4's scale.
  */
 struct OrangeGeoFromGeant : public OrangeGeoFromCsg
 {
     //!@{
     //! \name Volume-to-universe conversion
 
     //! Volumes with up to this many children construct an explicit interior
     unsigned int explicit_interior_threshold{2};
 
     //! Forcibly inline volumes that have no children
     bool inline_childless{true};
 
     //! Forcibly inline volumes that are only used once
     InlineSingletons inline_singletons{InlineSingletons::untransformed};
 
     //! Forcibly copy child volumes that have union boundaries
     bool inline_unions{true};
 
     //!@}
     //!@{
     //! \name Debug output
 
     //! Write output about volumes being converted
     bool verbose_volumes{false};
     //! Write output about proto-universes being constructed
     bool verbose_structure{false};
 
     //!@}
 };
 
 //---------------------------------------------------------------------------//
 // NOTE: these are implemented in OptionsIO.json.cc
 
 char const* to_cstring(InlineSingletons value);
 
 // Helper to read from a file or stream
 std::istream& operator>>(std::istream& is, OrangeGeoFromGeant&);
 // Helper to write to a file or stream
 std::ostream& operator<<(std::ostream& os, OrangeGeoFromGeant const&);
 
 //---------------------------------------------------------------------------//
 }  // namespace inp
 }  // namespace celeritas

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