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The properties of these graphical entities are revealed to AutoLISP as association lists in which values are paired with AutoCAD group codes that indicate properties such as definitional points, radii, colors, layers, linetypes, etc. AutoCAD loads AutoLISP code from .LSP files. [3] AutoLISP code can interact with the user through AutoCAD's ...
As of AutoCAD 2007 and later, AutoLISP or Visual-LISP programs can call routines written in Visual Studio .NET (VB or C#). Programmers can now create dialogs in VB or C# that have the full range of controls found in the .NET Forms API and can be called and accessed from Visual-LISP.
AutoCAD's native file formats are denoted either by a .dwg, .dwt, .dws, or .dxf filename extension. .dwg and, to a lesser extent, .dxf, have become de facto, if proprietary, standards for CAD data interoperability, particularly for 2D drawing exchange. [31] The primary file format for 2D and 3D drawing files created with AutoCAD is .dwg.
AutoLISP, a programming and scripting language for AutoCAD, is based on a very old version of XLISP. XLISP-PLUS is a derivative of XLISP 2.0 that continues to add Common Lisp features. Winterp is a derivative of XLISP-PLUS. XLISP-STAT is an implementation of Lisp-Stat, an environment for dynamic graphics and statistics with objects.
Bricsys also supports developers who wish to use LISP encryption, BricsCAD cannot read AutoCAD FAS (compiled LISP) files. Most compiled application programs developed for AutoCAD's Advanced Runtime eXtension facility require recompilation with the BricsCAD Runtime eXtension (BRX) libraries. BRX is source code-compatible with AutoCAD's ARX 2018 ...
Common Lisp is sometimes termed a Lisp-2 and Scheme a Lisp-1, referring to CL's use of separate namespaces for functions and variables. (In fact, CL has many namespaces, such as those for go tags, block names, and loop keywords). There is a long-standing controversy between CL and Scheme advocates over the tradeoffs involved in multiple namespaces.
Macro languages transform one source code file into another. A "macro" is essentially a short piece of text that expands into a longer one (not to be confused with hygienic macros), possibly with parameter substitution. They are often used to preprocess source code. Preprocessors can also supply facilities like file inclusion.
IntelliCAD versions that work with BIM files added choosing the IFC4 or IFC4x3 schema when exporting to .ifc files, and display properties for AEC styles. IntelliCAD versions that natively work with DGN files added attaching cell library (.cel) files, using the Explorer command to work with layouts and text styles, and snapping to geometric ...