COPYRIGHT

Intellectual Property Notice
----------------------------

G4VG is licensed under the Apache License, Version 2.0 (LICENSE-APACHE
or http://www.apache.org/licenses/LICENSE-2.0) or the MIT license,
(LICENSE-MIT or http://opensource.org/licenses/MIT), at your option.

Copyrights and patents in the G4VG project are retained by contributors.
No copyright assignment is required to contribute to G4VG, but by
submitting content in a pull request, you are confirming that you have the
right to make your contribution to G4VG, and that if you are making your
contribution in the course of your employment, that such contributions are
authorized by your employer.

G4VG is primarily extracted from Celeritas, which was originally developed in
2020 by developers at Oak Ridge National Laboratory (UT-Battelle, LLC), Fermi
National Accelerator Laboratory (Fermi Research Alliance, LLC), Argonne
National Laboratory (UChicago Argonne, LLC), and Lawrence Berkeley National
Laboratory (University of California).

The original G4VG code was based loosely on G4VecGeomNav by S Wenzel et al.


SPDX usage
----------

Individual files contain SPDX tags instead of the full license text.
This enables machine processing of license information based on the SPDX
License Identifiers that are available here: https://spdx.org/licenses/

Files that are dual-licensed as Apache-2.0 OR MIT contain the following
text in the license header:

    SPDX-License-Identifier: (Apache-2.0 OR MIT)


Software derived from external sources used in Celeritas
--------------------------------------------------------

Certain files in Celeritas are derived from external projects. The top of each
such file contains the attribution, the license's SPDX identifier, and a link
to the license. Full copies of the licenses are included in the online user
documentation.