License

This package is distributed under the GNU General Public License, version 3
(GPL-3).

Copyright holder for original package code:
- Tyler Morgan-Wall

This package bundles third-party source code under the following compatible
licenses:

1) BSD 3-Clause (Lukas Hosek and Alexander Wilkie)
- `src/ArHosekSkyModel/ArHosekSkyModel.cpp`
- `src/ArHosekSkyModel/ArHosekSkyModel.h`
- `src/ArHosekSkyModel/ArHosekSkyModelData_CIEXYZ.h`
- `src/ArHosekSkyModel/ArHosekSkyModelData_RGB.h`
- `src/ArHosekSkyModel/ArHosekSkyModelData_Spectral.h`

2) BSD 3-Clause (Eric Bruneton)
- `src/hosek/atmosphere.cpp`
- `src/hosek/atmosphere.h`
- `src/hosek/cie.cpp`
- `src/hosek/cie.h`
- `src/hosek/hosek.cpp`
- `src/hosek/hosek.h`
- `src/math/angle.h`
- `src/math/binary_function.h`
- `src/math/function.h`
- `src/math/matrix.h`
- `src/math/scalar.h`
- `src/math/scalar_function.h`
- `src/math/ternary_function.h`
- `src/math/units.h`
- `src/math/vector.h`

3) Apache License 2.0 (Charles University)
- `src/PragueSkyModel/PragueSkyModel.cpp`
- `src/PragueSkyModel/PragueSkyModel.h`

4) MIT License (Kevin Ushey)
- `tools/config.R`

The license terms for bundled third-party files are provided in the headers of
the corresponding files.