A C++20 library providing window calculation standards (NFRC, ISO 15099, CEN, etc.) for LBNL window thermal and optical analysis tools. Defines spectra, wavelength sets, integration rules, and method/boundary conditions read from on-disk standard files. Exposes the window_standards library target.
- C++20 compatible compiler (
g++11+,clang++14+, MSVC 19.30+) - CMake 3.8+ (3.21+ if you want to use the shipped CMake presets)
include(FetchContent)
FetchContent_Declare(
window_standards
GIT_REPOSITORY https://github.com/LBNL-ETA/Windows-CalcStandards.git
GIT_TAG v1.2.4
)
FetchContent_MakeAvailable(window_standards)
target_link_libraries(MyTarget PRIVATE window_standards)Update GIT_TAG to the desired release tag. Note: the library target is window_standards (snake_case) even though the repository is Windows-CalcStandards.
This is a leaf repository: it has no external library dependencies beyond GoogleTest for tests. GoogleTest is fetched via FetchContent_Declare (pinned to v1.16.0) in test/CMakeLists.txt when configuring as the top-level project. Tests build by default (-DBUILD_Windows_CalcStandards_tests=OFF to disable).
CMakePresets.json ships four visible configure presets, plus two hidden inheritance bases:
| Preset | When to use it |
|---|---|
default-debug / default-release |
Standard configure on any platform; CI. Fetches GoogleTest from its declared remote. Picks the system default compiler (MSVC on Windows, system cc/c++ on Linux/macOS). |
local-debug / local-release |
Consume a sibling ../googletest working copy instead of fetching it. Falls back to the declared remote when missing. |
Examples:
cmake --preset default-release
cmake --build build/default-release --parallel
ctest --test-dir build/default-release -C Release --output-on-failure
To use a specific compiler (vs2022-release, gcc-13-debug, clang-18-release, etc.), each developer maintains their own CMakeUserPresets.json next to CMakePresets.json. It is gitignored, read automatically by CMake (and CLion, VS Code, etc.), and stays on the developer's machine.
Personal presets inherit from one of the shipped presets (usually local) and override whatever they want. A complete realistic example -- building with WSL Clang on a Windows machine, with CLion 2023.2+ routed through the WSL toolchain automatically:
{
"version": 6,
"configurePresets": [
{
"name": "clang-release",
"displayName": "clang (Release)",
"inherits": "local",
"generator": "Ninja",
"binaryDir": "${sourceDir}/build/clang-release",
"cacheVariables": {
"CMAKE_C_COMPILER": "clang",
"CMAKE_CXX_COMPILER": "clang++",
"CMAKE_BUILD_TYPE": "Release"
},
"vendor": {
"jetbrains.com/clion": {
"toolchain": "WSL"
}
}
}
]
}cmake -B build
cmake --build build --config Release --parallel
ctest --test-dir build -C Release --output-on-failure
Delete the build/ directory and re-run the configure and build commands above.
See the LICENSE file.
Berkeley Lab WINDOW Calc Engine (CalcEngine) Copyright (c) 2016 - 2019, The Regents of the University of California, through Lawrence Berkeley National Laboratory (subject to receipt of any required approvals from the U.S. Dept. of Energy). All rights reserved.
If you have questions about your rights to use or distribute this software, please contact Berkeley Lab's Innovation & Partnerships Office at IPO@lbl.gov.
NOTICE. This Software was developed under funding from the U.S. Department of Energy and the U.S. Government consequently retains certain rights. As such, the U.S. Government has been granted for itself and others acting on its behalf a paid-up, nonexclusive, irrevocable, worldwide license in the Software to reproduce, distribute copies to the public, prepare derivative works, and perform publicly and display publicly, and to permit other to do so.