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AutoLISP | AfraLISP http://www.afralisp.net/autolisp/

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AutoLISP can be used simply to automate repetitive tasks or to build complex programs that extendAutoCAD and make it more productive. For example, you could write a program that calculates the totallength of polylines on a particular layer - imagine how much time that would save over doing it manually!

The great thing about AutoLISP is that it's pretty easy to use - even if you haven't done any programmingbefore. A complete beginner can easily create a simple routine that could save hours or days of work, makingAutoCAD much more efficient and the drawing process much less tedious. People may tell you thatAutoLISP is too limited and not powerful enough and that the higher-end languages are the way to go withAutoCAD customization. That may be true if you're a serious developer of 3rd party applications but if you'rejust a regular AutoCAD user who wants to make their life easier, AutoLISP is just the thing.

AutoLISP is based on the LISP programming language but was written by Autodesk specifically forAutoCAD. It was introduced with AutoCAD version 2.18 (a minor version update of AutoCAD 2.1) inJanuary 1986. Autodesk continued to enhance and extend AutoLISP up to and including AutoCAD Release13 in November 1994. From Release 14 onwards, Autodesk have not developed AutoLISP, choosing to focusefforts on the then new Visual LISP version of the language. Despite the fact that AutoLISP has not changedin almost two decades, it remains incredibly popular with AutoCAD users. This is mainly due to its ease ofuse and the massive productivity gains that can be earned through its implementation. See the AutoLISPWikipedia article for more information.

The Basics in a Nutshell - Part 1

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Loading AutoLISP Files


AutoLISP Quick Start


The Define Function (defun)


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SET and SETQ

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Program Looping


Conditionals


COND vs. IF


Error Trapping


Calculating Points (Polar)


Locating Files


File Handling


External Data


List Manipulation


Into the Database


Selection Sets


Selection Set Filters


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Working with Layers and Styles


Polylines and Blocks


Extended Entity Data - Part 1


Extended Entity Data - Part 2


(mapcar) and (lambda)


The (eval) Function


Redefining Commands


Efficient Variables


The DIR Command


Colours and Linetypes ByLayer


Debugging


Dictionaries and XRecords


Tool System Primer


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Polyline Bulges - Part 1


Polyline Bulges - Part 2


Saving and Restoring System Variables


Date and Time Stamping


Loading VBA Projects with AutoLISP


Application Data


Macro Recorder


Working with Areas - Part 1


Working with Areas - Part 2


Drawing Setup - Part 1







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Tips'n'Tricks

AutoLISP Beginners' TutorialsAutoLISP Intermediate TutorialsAutoLISP Advanced TutorialsAutoLISP Application TutorialsAutoLISP Tips'n'Tricks

Hey, what's happened to AfraLISP? If you've visited our site before, you'll notice some big changes. We'recurrently revamping the entire site to bring you updated tutorials and a better user experience. However, ifthere's something you can't find, the AfraLISP Archive contains a full copy of the original site as originallycreated by Kenny Ramage.

Lee Mac - AutoLISP Tutorials and ProgrammesJeffery P Sanders - AutoLISP TutorialsRon Leigh - AutoLISP TutorialsPixel Graphics Inc. - AutoLISP TutorialsA'CAD Solutions - AutoLISP TutorialCAD Digest - AutoLISP TutorialsAutodesk - Customization TutorialsDaily AutoCAD - AutoLISP Tips & Tricks

The ABC's of AutoLISPThe Visual LISP Developer's Bible

CADTutorAutodesk Discussion GroupsAutodesk User Group International (AUGI)The Swamp

120 Tutorials and reference documents published at AfraLISP so far.

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