This file is not a separate license. It records upstream provenance and attribution that should stay visible alongside the repo license.
fast-utci uses and adapts thermal-comfort, solar, and environmental-analysis logic from the Ladybug Tools ecosystem. The legacy Python pathway also imports Ladybug modules directly for EPW weather data, sun paths, sky geometry, and Outdoor SolarCal MRT.
Relevant upstream projects include:
- Ladybug Tools: https://www.ladybug.tools/
- ladybug-core: https://github.com/ladybug-tools/ladybug
- ladybug-comfort: https://github.com/ladybug-tools/ladybug-comfort
- Ladybug Grasshopper components: https://github.com/ladybug-tools/ladybug-grasshopper
Ladybug Tools projects are distributed under GPL/AGPL-family licenses. This repository is licensed under AGPL-3.0-or-later to keep the adapted Python and WebGPU implementation aligned with that upstream licensing.