THIRD-PARTY NOTICES for brep-lens ================================== brep-lens (the web app at brep-lens.pages.dev, its two WebAssembly modules, the native CLI and viewer) contains code from the projects below. This file is served with the app as /THIRD-PARTY-NOTICES.txt and summarised in the app's About panel. It covers third-party code only; brep-lens's own code has no licence yet (that's the owner's call, see docs/LICENSING-NOTES.md). What ships where: breplens_core.wasm / .js Open CASCADE Technology 7.9.3 (statically linked), Emscripten runtime and system libraries (musl, libc++, libc++abi, compiler-rt, dlmalloc) breplens_view.wasm / .js emdawnwebgpu (Dawn), Emscripten runtime and system libraries assets/index-*.js Vite's module preload helper (MIT) samples/ NIST CTC-02 and CTC-05 (public domain), everything else made by tools/gen_samples.cpp native viewer only Dawn + its dependencies, GLFW (not on the site) Contents 1. Open CASCADE Technology: LGPL-2.1 with the Open CASCADE exception 2. Dawn / emdawnwebgpu: BSD-3-Clause 3. Emscripten: MIT / University of Illinois NCSA 4. musl libc: MIT 5. LLVM libc++, libc++abi, compiler-rt: Apache-2.0 WITH LLVM-exception 6. dlmalloc: public domain (CC0) 7. Vite: MIT 8. Sample files: NIST CTC models (public domain) and our own 9. Native builds only: GLFW (zlib), Dawn's dependencies ============================================================================== 1. Open CASCADE Technology (OCCT) 7.9.3 ============================================================================== brep-lens uses Open CASCADE Technology (https://dev.opencascade.org). Copyright (c) 1998-1999 Matra Datavision Copyright (c) 1999-2025 OPEN CASCADE SAS OCCT is free software under the GNU Lesser General Public License version 2.1 with the Open CASCADE exception (version 1.0). Both texts follow below. Static linking, and how to relink. The 17 OCCT toolkits brep-lens uses (TKernel TKMath TKG2d TKG3d TKGeomBase TKBRep TKGeomAlgo TKTopAlgo TKPrim TKShHealing TKMesh TKBO TKBool TKXSBase TKDE TKDESTEP TKDEIGES) are linked statically into breplens_core.wasm (and into the native CLI and viewer). LGPL-2.1 section 6 lets you replace that OCCT with a modified one: - Exact OCCT source: tag V7_9_3 of https://github.com/Open-Cascade-SAS/OCCT (tag object adb3db9a59488050843727f082676717187b9bf6, commit a016080bf6738d6aeae020badee4e888ad1540a5), source archive at https://github.com/Open-Cascade-SAS/OCCT/archive/refs/tags/V7_9_3.tar.gz - Our changes to it: none to the code. scripts/build-occt.sh (patch_occt) only drops the XDE/OCAF packages (STEPCAFControl, IGESCAFControl and the DESTEP/DEIGES Provider and ConfigurationNode files) from the TKDESTEP and TKDEIGES build lists, so the visualisation toolkits aren't dragged in. - Build: scripts/build-occt.sh wasm (Emscripten 6.0.13, -fwasm-exceptions), then scripts/build-wasm.sh, which links our object files against the OCCT static libraries with the link line in CMakeLists.txt. Point OCCT_DIR at your own OCCT build to relink against it. docs/BUILD.md has the details. - The brep-lens repository is private for now. 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The reason for offering both is that (1) the MIT license is well-known, while (2) the University of Illinois/NCSA Open Source License allows Emscripten's code to be integrated upstream into LLVM, which uses that license, should the opportunity arise. The full text of both licenses follows. ============================================================================== Copyright (c) 2010-2014 Emscripten authors, see AUTHORS file. Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. 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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS WITH THE SOFTWARE. ============================================================================== This program uses portions of Node.js source code located in src/library_path.js, in accordance with the terms of the MIT license. Node's license follows: """ Copyright Joyent, Inc. and other Node contributors. All rights reserved. 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Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ---------------------------------------------------------------------- Authors/contributors include: A. Wilcox Ada Worcester Alex Dowad Alex Suykov Alexander Monakov Andre McCurdy Andrew Kelley Anthony G. Basile Aric Belsito Arvid Picciani Bartosz Brachaczek Benjamin Peterson Bobby Bingham Boris Brezillon Brent Cook Chris Spiegel Clément Vasseur Daniel Micay Daniel Sabogal Daurnimator David Carlier David Edelsohn Denys Vlasenko Dmitry Ivanov Dmitry V. Levin Drew DeVault Emil Renner Berthing Fangrui Song Felix Fietkau Felix Janda Gianluca Anzolin Hauke Mehrtens He X Hiltjo Posthuma Isaac Dunham Jaydeep Patil Jens Gustedt Jeremy Huntwork Jo-Philipp Wich Joakim Sindholt John Spencer Julien Ramseier Justin Cormack Kaarle Ritvanen Khem Raj Kylie McClain Leah Neukirchen Luca Barbato Luka Perkov Lynn Ochs M Farkas-Dyck (Strake) Mahesh Bodapati Markus Wichmann Masanori Ogino Michael Clark Michael Forney Mikhail Kremnyov Natanael Copa Nicholas J. Kain orc Pascal Cuoq Patrick Oppenlander Petr Hosek Petr Skocik Pierre Carrier Reini Urban Rich Felker Richard Pennington Ryan Fairfax Samuel Holland Segev Finer Shiz sin Solar Designer Stefan Kristiansson Stefan O'Rear Szabolcs Nagy Timo Teräs Trutz Behn Will Dietz William Haddon William Pitcock Portions of this software are derived from third-party works licensed under terms compatible with the above MIT license: The TRE regular expression implementation (src/regex/reg* and src/regex/tre*) is Copyright © 2001-2008 Ville Laurikari and licensed under a 2-clause BSD license (license text in the source files). The included version has been heavily modified by Rich Felker in 2012, in the interests of size, simplicity, and namespace cleanliness. Much of the math library code (src/math/* and src/complex/*) is Copyright © 1993,2004 Sun Microsystems or Copyright © 2003-2011 David Schultz or Copyright © 2003-2009 Steven G. Kargl or Copyright © 2003-2009 Bruce D. Evans or Copyright © 2008 Stephen L. Moshier or Copyright © 2017-2018 Arm Limited and labelled as such in comments in the individual source files. All have been licensed under extremely permissive terms. The ARM memcpy code (src/string/arm/memcpy.S) is Copyright © 2008 The Android Open Source Project and is licensed under a two-clause BSD license. It was taken from Bionic libc, used on Android. The AArch64 memcpy and memset code (src/string/aarch64/*) are Copyright © 1999-2019, Arm Limited. The implementation of DES for crypt (src/crypt/crypt_des.c) is Copyright © 1994 David Burren. It is licensed under a BSD license. The implementation of blowfish crypt (src/crypt/crypt_blowfish.c) was originally written by Solar Designer and placed into the public domain. The code also comes with a fallback permissive license for use in jurisdictions that may not recognize the public domain. The smoothsort implementation (src/stdlib/qsort.c) is Copyright © 2011 Lynn Ochs and is licensed under an MIT-style license. The x86_64 port was written by Nicholas J. Kain and is licensed under the standard MIT terms. The mips and microblaze ports were originally written by Richard Pennington for use in the ellcc project. The original code was adapted by Rich Felker for build system and code conventions during upstream integration. It is licensed under the standard MIT terms. The mips64 port was contributed by Imagination Technologies and is licensed under the standard MIT terms. The powerpc port was also originally written by Richard Pennington, and later supplemented and integrated by John Spencer. It is licensed under the standard MIT terms. All other files which have no copyright comments are original works produced specifically for use as part of this library, written either by Rich Felker, the main author of the library, or by one or more contibutors listed above. Details on authorship of individual files can be found in the git version control history of the project. The omission of copyright and license comments in each file is in the interest of source tree size. In addition, permission is hereby granted for all public header files (include/* and arch/*/bits/*) and crt files intended to be linked into applications (crt/*, ldso/dlstart.c, and arch/*/crt_arch.h) to omit the copyright notice and permission notice otherwise required by the license, and to use these files without any requirement of attribution. These files include substantial contributions from: Bobby Bingham John Spencer Nicholas J. Kain Rich Felker Richard Pennington Stefan Kristiansson Szabolcs Nagy all of whom have explicitly granted such permission. This file previously contained text expressing a belief that most of the files covered by the above exception were sufficiently trivial not to be subject to copyright, resulting in confusion over whether it negated the permissions granted in the license. In the spirit of permissive licensing, and of not having licensing issues being an obstacle to adoption, that text has been removed. ============================================================================== 5. LLVM libc++, libc++abi, compiler-rt (via Emscripten) ============================================================================== ============================================================================== The LLVM Project is under the Apache License v2.0 with LLVM Exceptions: ============================================================================== Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 1. Definitions. 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See the License for the specific language governing permissions and limitations under the License. ---- LLVM Exceptions to the Apache 2.0 License ---- As an exception, if, as a result of your compiling your source code, portions of this Software are embedded into an Object form of such source code, you may redistribute such embedded portions in such Object form without complying with the conditions of Sections 4(a), 4(b) and 4(d) of the License. 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Full text of the relevant licenses is included below. ============================================================================== University of Illinois/NCSA Open Source License Copyright (c) 2009-2019 by the contributors listed in CREDITS.TXT All rights reserved. Developed by: LLVM Team University of Illinois at Urbana-Champaign http://llvm.org Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal with the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimers. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimers in the documentation and/or other materials provided with the distribution. * Neither the names of the LLVM Team, University of Illinois at Urbana-Champaign, nor the names of its contributors may be used to endorse or promote products derived from this Software without specific prior written permission. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS WITH THE SOFTWARE. ============================================================================== Copyright (c) 2009-2014 by the contributors listed in CREDITS.TXT Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ============================================================================== 6. dlmalloc (Emscripten's default malloc) ============================================================================== This is a version (aka dlmalloc) of malloc/free/realloc written by Doug Lea and released to the public domain, as explained at http://creativecommons.org/publicdomain/zero/1.0/ ============================================================================== 7. Vite (module preload helper in the app bundle) ============================================================================== Vite is released under the MIT license: MIT License Copyright (c) 2019-present, VoidZero Inc. and Vite contributors Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # Licenses of bundled dependencies The published Vite artifact additionally contains code with the following licenses: Apache-2.0, BSD-2-Clause, CC0-1.0, ISC, MIT # Bundled dependencies: ============================================================================== 8. Sample files ============================================================================== samples/third-party/nist_ctc_02_asme1_rc.stp and nist_ctc_05_asme1_rd.stp are NIST Combined Test Cases 2 and 5, unmodified, from the "NIST FTC/CTC PMI CAD models" (https://www.nist.gov/document/nist-ftc-ctc-pmi-cad-models), National Institute of Standards and Technology, Smart Connected Manufacturing Systems Group, MBE PMI Validation and Conformance Testing project. "Pursuant to Title 17 Section 105 of the United States Code this test system is not subject to copyright protection and is in the public domain." "The test cases and CAD models can be used without any restrictions. [...] We would appreciate acknowledgement if any of the test cases and CAD models are used. However, the use of the NIST logo is not allowed." This is that acknowledgement, with thanks. Their use here doesn't imply that NIST endorses brep-lens. Their README is next to the files (samples/third-party/NIST-README.txt), provenance and checksums are in samples/README.md. All other sample files (block, turned, healable, freeform, assembly and the broken/ ones) are generated by tools/gen_samples.cpp with OCCT; no third-party CAD data in them. ============================================================================== 9. Native builds only (not part of the web app) ============================================================================== The native viewer (viewer/) also links GLFW (zlib licence, https://www.glfw.org/license) and Dawn's own dependencies (abseil-cpp, SPIRV-Tools, SPIRV-Headers, Vulkan headers and loader, ...; mostly Apache-2.0, some MIT/BSD). None of them is in the WebAssembly modules. If the native viewer is ever distributed, their notices from Dawn's third_party/ tree have to go with it.