LibreCAD

Last updated

LibreCAD
Other namesCADuntu
Original author(s) Ries van Twisk
Developer(s) Armin Stebich, Dongxu Li, Rallaz, Ravas and others
Initial releaseDecember 15, 2011;
12 years ago (2011-12-15)
Stable release
2.2.0.2 [1]   OOjs UI icon edit-ltr-progressive.svg / 29 July 2023 (29 July 2023)
Preview release
Repository LibreCAD on GitHub
Written in C, C++, Lua
Operating system Windows, macOS, Unix-like, Linux, Haiku
Platform x86-64
Included withCAELinux;
UALinux: Ubuntu Education Pack
Predecessor QCAD CE 2.0.5
Size 40 MB
Standard(s)ANSI/ACME, ISO 3098, ISO 7200
Available in64 languages
Type Computer-aided design
License GPL-2.0-only
Website librecad.org

LibreCAD is a computer-aided design (CAD) application for 2D design. It is free and open-source, and available for Unix/Linux, macOS, and Windows operating systems.

Contents

Most of the interface and handle concepts are analogous to AutoCAD, making it easier to use for users with experience in this type of commercial CAD application.

History

Around 2010, the QCAD Community Edition 2.0.5 was forked to start the development of what is now known as LibreCAD. Originally, the GUI was based on Qt3 libraries. [2] [3]

CADuntu

CADuntu — was the initial QCAD CE fork project name. It used for a short period of time and, after discussion with users, has been replaced by LibreCAD, to not be associated with Ubuntu and Canonical Ltd.

LibreCAD Welcome screen Swr@ lshrH brnmj lybrkd 0002.png
LibreCAD Welcome screen

LibreCAD 1

LibreCAD 1 main feature was porting of GUI to Qt4, so it can run on several platforms in the same way. [4] [5]

LibreCAD 2

LibreCAD 2 with AEC drawing LibreCAD2 2 0-RC2.png
LibreCAD 2 with AEC drawing

LibreCAD 2 implements Qt5 and Qt6 libraries support.

As on 2024, LibreCAD development split into 3 branches:

LibreCAD 3

LibreCAD 3 test build screen LibreCAD 3 screenshot.png
LibreCAD 3 test build screen

LibreCAD 3 — is an experimental fully rewritten from scratch LibreCAD version, designed to be GPLv3 compatible with LibreDWG, with Lua-scripting, Ribbon UI.

Development mostly done during 2018–2023 GSoC sessions, in the collaboration with BRL-CAD team.

Latest commits and test builds built in September 2023, and since development stalled. LibreCAD team is actually frozen this project, and are focusing on LibreCAD 2 and libdxfrw library development.

Version history

Data taken from official website, project pages on Sourceforge and GitHub

Features

LibreCAD is available in over 60 languages. [6]

It uses the AutoCAD DXF file format internally for import and save files, as well as allowing export to many other file formats.

File formats

As of version 2.2.0, LibreCAD is capable of reading and writing the following file formats:

Open File or Import Block

Import Image

Save File

Export

libdxfrw

Due to the GNU LibreDWG library is released under GPLv3, it cannot be used by GPLv2-licensed LibreCAD (and FreeCAD) [7] [8] because their licenses are incompatible. [9] A request also went to the FSF to relicense GNU LibreDWG as GPLv2, which was rejected. [10] The problem was eventually resolved by writing a new GPLv2-licensed library called libdxfrw, [11] with more complete DWG support, which is now also used in other software (e.g., in SolveSpace, that is also uses LibreCAD's unicode.lff font as built-in default font for UI and dimensions labels).

LFF (LibreCAD Font Format)

Due to copyright issues with QCAD CE's fonts in CXF format, initially used in LibreCAD, it was decided to create own font format.

LibreCAD Font Format — is a plain text file fomat (with *.lff file extension) for single stroke vector fonts. [12]

There is a way to edit LFF fonts directly in LibreCAD or create fonts from fonts in other formats. Converters to LFF format are designed for the next formats:

  • TTF (TrueType fonts) — converter availalbe online on official site and as a CLI utility; [13]
  • JHF (Hershey fonts) — converter implemented as CLI utility;
  • Shx (Shapefile Index fonts) — converter designed by 3rd party developer.

LibreCAD Font Format adopted in SolveSpace CAD, and LibrePCB software designed FontoBene (*.bene) font format for PCB, which is derived from LFF. [12]

Usage

LibreCAD is in use in many countries for education purposes at schools and universities, in production at firms and factories for design and manufacturing various items, architecture design, garden and landscape design, etc. [14] [15] [16] [17] [18]

In some countries LibreCAD, thanks to free licensing, is used for decreasing budget expences on software licensing by replacing commercial CAD at state and governmental organizations, public schools, etc. Also, LibreCAD is chosen in cases where there is no reachable official dealers of commercial software, or all available commercial CAD solutions are too expensive.

In some countries LibreCAD used to avoid international sanctions, for example in Russia it used to avoid international sanctions implemented for the invasion of Ukraine. [19] [20] [21] [22] [23] [24] [25] [26] [27] [28]

LibreCAD has been included into CAELinux distribution, targeting engineers and makers. [29] [30]

EU

In 2011, for the e-LIFE education project, organized by European Commission for disabled people, there was a manual book provided with few chapters on learning LibreCAD and other free CAD, [31] which has been translated into Greek, Spanish, Slovak, Turkish and Romanian. [32]

Ukraine

Since 1990s, most of the Ukrainian schools, universities and factories has been used licensed Russian CAD KOMPAS, [33] that is designed for GOST standards, but after the beginning of the Russo-Ukrainian War since 2014, and after sanctions on Russian software has been implemented by the President of Ukraine since 2017, [34] Ukrainian users are switching from KOMPAS to other CAD, including LibreCAD. [35] [36]

During 2016—2019, in Ukraine there was reviewed and declined use of GOST standards, that is the base of the Unified System for Design Documentation, and since then most of GOST standards was replaced by State Standards of Ukraine  [ uk ] and by adopted ISO standards, [37] [38] [39] which LibreCAD is adapted for.

At educational institutions of Ukraine LibreCAD often used in such courses like Geometry, Descriptive geometry, Technical drawing, Graphic design, Engineering graphics, Informatics, Mechanics, Analytical mechanics, Design and Technology, Materials science, Woodworking, Metalworking, Automation, etc. [14] [40] [41] [42] [43] [44] [45] [46] [47] [48] [49]

Since 2019, LibreCAD is included in the list of permitted software to install on computers at departments of the State Emergency Service of Ukraine as the only CAD software permitted to use, according to SESU Head's Order №425 (Appendix 1, p.2), signed on 19 July 2019. [50] [51]

Ukrainian scientists, researchers, design bureaus, freelancers, and single and small manufactures use LibreCAD. [52] [53] [54] [55] [56] [57]

LibreCAD has been included into educational edition of the Ukrainian Linux distribution for schools UALinux: Ubuntu Education Pack  [ uk ]. [58] [59]

USA

In 2021, LibreCAD has been used for student research works challenge CELERE (Capillary Effects on Liquids Exploratory Research Experiments) organized by NASA for the collecting and choosing experiments on research into capillary action to be tested in low gravity conditions on ISS. [60] For the participants there was a handbook on LibreCAD use has been created and provided by employees of NASA Glenn Research Center. [61]

See also

Related Research Articles

<span class="mw-page-title-main">AutoCAD</span> Commercial computer-aided design (CAD) and drafting software application

AutoCAD is a 2D and 3D computer-aided design (CAD) software application developed by Autodesk. It was first released in December 1982 for the CP/M and IBM PC platforms as a desktop app running on microcomputers with internal graphics controllers. Initially a DOS application, subsequent versions were later released for other platforms including Classic Mac OS (1992), Microsoft Windows (1993) and macOS (2010), iOS (2010), and Android (2011).

AutoCAD DXF is a CAD data file format developed by Autodesk for enabling data interoperability between AutoCAD on different platforms.

DWG is a proprietary binary file format used for storing two- and three- dimensional design data and metadata. It is the native format for several CAD packages including DraftSight, AutoCAD, ZWCAD, IntelliCAD, Caddie and Open Design Alliance compliant applications. In addition, DWG is supported non-natively by many other CAD applications. The .bak, .dws, .dwt and .sv$ files are also DWG files.

<span class="mw-page-title-main">QCAD</span> CAD software

QCAD is a computer-aided design (CAD) software application for 2D design and drafting. It is available for Linux, Apple macOS, Unix and Microsoft Windows. The QCAD GUI is based on the Qt framework.

<span class="mw-page-title-main">AutoSketch</span>

AutoSketch is a 2D vector drawing program by Autodesk. It is less powerful than Autodesk's AutoCAD and does not support 3D models.

<span class="mw-page-title-main">Rhinoceros 3D</span> 3D computer graphics software

Rhinoceros is a commercial 3D computer graphics and computer-aided design (CAD) application software that was developed by TLM, Inc, dba Robert McNeel & Associates, an American, privately held, and employee-owned company that was founded in 1978. Rhinoceros geometry is based on the NURBS mathematical model, which focuses on producing mathematically precise representation of curves and freeform surfaces in computer graphics.

SketchUp is 3D modeling software that is used to create and manipulate 3D models. It is used in architecture and interior design.

Open Design Alliance is a nonprofit organization creating software development kits (SDKs) for engineering applications. ODA offers interoperability tools for CAD, BIM, and Mechanical industries including .dwg, .dxf, .dgn, Autodesk Revit, Autodesk Navisworks, and .ifc files and additional tools for visualization, web development, 3D PDF publishing and modeling.

The table below provides an overview of notable computer-aided design (CAD) software. It does not judge power, ease of use, or other user-experience aspects. The table does not include software that is still in development. For all-purpose 3D programs, see Comparison of 3D computer graphics software. CAD refers to a specific type of drawing and modelling software application that is used for creating designs and technical drawings. These can be 3D drawings or 2D drawings.

The Free Software Foundation (FSF) is a 501(c)(3) non-profit organization founded by Richard Stallman on October 4, 1985. The organisation supports the free software movement, with the organization's preference for software being distributed under copyleft terms, such as with its own GNU General Public License. The FSF was incorporated in Boston, Massachusetts, United States, where it is also based.

<span class="mw-page-title-main">FreeCAD</span> Free and open-source 3D CAD software

FreeCAD is a general-purpose parametric 3D computer-aided design (CAD) modeler and a building information modeling (BIM) software application with finite element method (FEM) support. It is intended for mechanical engineering product design but also expands to a wider range of uses around engineering, such as architecture or electrical engineering. FreeCAD is free and open-source, under the LGPL-2.0-or-later license, and available for Linux, macOS, and Windows operating systems. Users can extend the functionality of the software using the Python programming language.

<span class="mw-page-title-main">SprutCAM</span> Computer-aided manufacturing software

SprutCAM X is a high-level Computer-Aided Manufacturing (CAM) software that provides off-line features for programming of various CNC machines used for cutting, wire electrical discharge (EDM), 2, 3, and multi axial machining.

TranslateCAD is a tool for computer-aided translation software, designed to extract translatable text from CAD drawings saved in the industry-standard DXF format - regardless of the CAD software used to create such drawings - so that professional translators are able to translate in plain text using a number of CAT tools available.

GstarCAD is a CAD software platform, using the Open Design Alliance DWG libraries to read and write the DWG file format made popular by the AutoCAD CAD package.

AGi32 is a simulation tool used for designing lighting projects and calculating the amount of light that will be delivered based on user-set parameters. The resulting calculations are commonly referred to as lighting layouts or point-by-points. AGi32 can calculate the amount of light that will be delivered in any kind of design, interior or exterior, and incorporate surrounding objects, obstructions, and varying shapes like vaulted ceilings or rooms in non-linear shapes. It aids lighting designers, engineers, and electrical contractors in the evaluation of lighting designs for projects before they are built.

<span class="mw-page-title-main">Digital Geometric Kernel</span>

Digital Geometric Kernel, is a software development framework and a set of components for enabling 3D/CAD functionality in Windows applications, developed by DInsight.

<span class="mw-page-title-main">Alibre Design</span> CAD software

Alibre Design is a 3D parametric computer aided design software suite developed by Alibre for Microsoft Windows. Available in fifteen languages. Alibre is a brand of Alibre, LLC, a company based in Texas.

<span class="mw-page-title-main">SolveSpace</span> Open-source computer-aided design software

SolveSpace is a free and open-source 2D/3D constraint-based parametric computer-aided design (CAD) software that supports basic 2D and 3D constructive solid geometry modeling.

<span class="mw-page-title-main">Landscape Express</span> CAD software application

Landscape Express is a CAD software application for 2D and 3D design and drafting. It is used primarily by landscape designers. The software is developed, sold and supported by the British company 'Trial Systems Ltd' based in Burton-upon-Trent, Staffordshire. The software was first released in 2012, developed by Peter Boyce and Steven Pearce in conjunction with Anton Heymann. The software is based on the Drawing Express CAD system which utilizes tablet and pen interface. A graphics tablet, pen and overlay are used to select, use and manipulate commands thus mimicking the draughtsman's drawing board. This differs from the traditional CAD software ‘drop-down’ menu structures on-screen as the menu system is laid out in front of the user. The method of drawing in this way is aimed at being intuitive allowing the user to create and amend drawings as quickly as possible.

GNU LibreDWG is a software library programmed in C to manage DWG computer files, native proprietary format of computer-aided design software AutoCAD. It aims to be a free software replacement for the OpenDWG libraries. The project is managed by the Free Software Foundation (FSF).

References

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  7. ↑ Prokoudine, Alexandre (26 January 2012). "What's up with DWG adoption in free software?". libregraphicsworld.org. Archived from the original on 9 November 2016. Retrieved 3 November 2013. [Assimp's Alexander Gessler:] "Personally, I'm extremely unhappy with their [LibreDWG's — LGW] GPL licensing. It prohibits its use in Assimp and for many other applications as well. I don't like dogmatic ideologies, and freeing software by force (as GPL/GNU does) is something I dislike in particular. It's fine for applications, because it doesn't hurt at this point, but, in my opinion, not for libraries that are designed to be used as freely as possible." [Blender's Toni Roosendaal:] "Blender is also still "GPLv2 or later". For the time being we stick to that, moving to GPL 3 has no evident benefits I know of. My advice for LibreDWG: if you make a library, choosing a widely compatible license (MIT, BSD, or LGPL) is a very positive choice."
  8. ↑ Larabel, Michael (24 January 2013). "FSF Wastes Away Another "High Priority" Project". Phoronix. Archived from the original on 9 November 2016. Retrieved 22 August 2013. Both LibreCAD and FreeCAD both want to use LibreDWG and have patches available for supporting the DWG file format library, but can't integrate them. The programs have dependencies on the popular GPLv2 license while the Free Software Foundation will only let LibreDWG be licensed for GPLv3 use, not GPLv2.
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  57. ↑ "Программы для 3D и 2D моделирования и визуализации объектов. Обзор — Будівельний портал ПрофіДОМ". profidom.com.ua (in Ukrainian). Retrieved 17 August 2024.
  58. ↑ "LibreCad – система автоматизованого проектування". ualinux.com. Retrieved 17 August 2024.
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  60. ↑ "CELERE – Capillary Effects on Liquids Exploratory Research Experiments". NASA (An ISS Research Design Challenge). 2021. Students create their own experiments using Computer-Aided Design (CAD) with a provided template and tutorial for the freely downloaded version of LibreCAD Software
  61. ↑ Hatch, Tyler; Hall, Nancy (21 July 2021). CELERE 2021 Tutorial (PDF). Glenn Research Center. It is strongly recommended that you go through all of this tutorial's steps at least once, especially if you are not familiar with LibreCAD!
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