OpenMyDrawing

Open-source licences

The drawing viewer and the 3D and IFC viewer run these libraries in your browser, unchanged apart from the import paths noted below. The fonts are used on every page. Each is offered under its own licence, and their authors keep their copyright.

PDF.js 6.4.299

Draws a drawing sharp when you zoom in past the picture the server made: a PDF from the file in your browser, a DWG or DXF from the page the server drew. By Mozilla and its contributors, under the Apache License 2.0 (the licence text as shipped). Source: github.com/mozilla/pdf.js, v6.4.299; the files served here are the legacy build, standard fonts, CMaps, image decoders and colour profile of the npm package pdfjs-dist 6.4.299, unchanged. Shipped with it:

Clipper 6.4.2

Works out where a sheet's viewports overlap, so a measurement there is not given one viewport's scale. Clipper by Angus Johnson, in JavaScript by Timo (clipper-lib), under the Boost Software License 1.0 (the licence text). Source: github.com/junmer/clipper-lib; the file served here is clipper.js of the npm package clipper-lib 6.4.2, unchanged but for two lines around it that make it an ES module. Built into it: jsbn (big integers), Copyright (c) 2003-2009 Tom Wu, under its MIT-style licence: licence.

web-ifc 0.0.78

Reads IFC models. By That Open Company and its contributors, under the Mozilla Public License 2.0 (the licence text as shipped). The source code of this version is at github.com/ThatOpen/engine_web-ifc, tag 0.78; the files served here are those of the npm package web-ifc 0.0.78, unchanged.

three.js 0.186.1

Draws the models and reads the mesh formats (its loaders for glTF, OBJ, STL, PLY, FBX, Collada, 3MF, 3DS, VRML and USDZ, and OrbitControls). Source: github.com/mrdoob/three.js, r186. The loaders' import ... from 'three' is rewritten to a relative path, and the Draco decoder's worker is written to its own file instead of being built in the browser. Under the MIT licence:

The MIT License

Copyright © 2010-2026 three.js authors

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.

Shipped inside three.js

Fonts