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Pdf Man Myth Matthew Hussey Retreat. Introduction This tutorial is aimed at the AutoCAD users who would like to start learning AutoLisp. I suggest that you go through this tutorial along with the AutoCAD Programmers Reference Guide. You can then lookup the relevant AutoLisp commands for a more detailed explanation. Hope this helps you and Good Luck in your Lisping - Kenny Ramage Principles of Programming All AutoLisp programs must contain the suffix '.LSP' otherwise AutoCAD will not access them when loading. Use a simple text processor such as Notepad to create and edit your lisp files.

Function (which is simply the program) Is a pre-defined set of instructions that describes a set of actions that AutoLisp is to perform, divided into three sections: • OPERATOR - Getting input. • ARGUMENT - Manipulating the input. • COMMAND - Using the manipulated input. Charting Draw out or write out in English what you want your program to do. Variables These are like empty boxes in which to store data, to be used later. In AutoLisp, variables may be a collection of letters or numbers as long as they begin with the letters. Example of legal variables are as follows: • A • ARC1 • POINT1 • PNT1 • D3 An AutoLisp variable may contain more than one value in a single variable.

A value can be anything, such as: • Real number • String • Integer • Pickset Therefore a variable can store just about anything. Structuring Structure your program in such a way that it is easy to understand, by yourself and everyone else. Keep input statements together. Keep your arguments together. Keep your commands together. Track your work with the semicolon. When you begin a line with a semicolon, anything you write after will be ignored by AutoLisp.

It is used for documentation and explanation of your program. Write notes about your program, what you are doing and what the variables are. A semicolon does not have to begin the line. (prompt 'This line will print'); This is a comment From where the semicolon begins, the remainder of the line is a comment statement.

Bt Wifi Login Hack. CADTutor provides free tutorials, articles and a busy community forum for users of AutoCAD and associated software. Want to learn Autolisp? Here are some free resources. >Reference >Want to learn Autolisp? Here are some free online autolisp tutorials and reference materials.