After six years of development, the release of the free CAD system LibreCAD 2.2 is available. The system is aimed at performing 2D design tasks, such as preparing engineering and construction drawings, diagrams and plans. Supports import of drawings in DXF and DWG formats, and export to DXF, PNG, PDF and SVG formats. The LibreCAD project was created in 2010 as an offshoot of QCAD CAD. The project code is written in C++ using the Qt framework and is distributed under the GPLv2 license. Ready assemblies are prepared for Linux (AppImage), Windows and macOS.
The engineer is offered several dozen tools for creating and modifying objects, working with layers and blocks (groups of objects). The system supports the expansion of functionality through plugins and provides tools for creating extension scripts. There is a library of elements, which contains layouts of several thousand typical parts. The LibreCAD interface is notable for providing extensive customization options - the contents of menus and panels, as well as the style and widgets, can arbitrarily change depending on the user's preferences.
Major changes:
- Support for the Qt4 library has been discontinued, the interface has been completely translated to Qt 5 (Qt 5.2.1+).
- The undo/redo engine has been completely redesigned.
- Enhanced command line interface capabilities related to processing multiline commands, as well as writing and opening files with commands.
- Improved interface for preview before printing, added settings for the document header and line width control.
- Added the ability to select several areas at the same time and perform batch operations with lists of blocks and layers.
- In the libdxfrw library being developed by the project, support for the DWG format has been improved, performance has been optimized when panning and zooming large files.
- Fixed accumulated errors, some of which led to a crash.
- Added support for new compiler versions.
In the parallel development branch of LibreCAD 3, work is underway to switch to a modular architecture, in which the interface is separated from the base CAD engine, which allows you to create interfaces based on different toolkits, without being tied to Qt. Added an API for developing plugins and widgets in the Lua language.
Source: opennet.ru