An L-system or Lindenmayer system is a parallel rewriting system and a type of formal grammar. An L-system consists of an alphabet of symbols that can be used to make strings, a collection of production rules that expand each symbol into some larger string of symbols, an initial "axiom" string from which to begin construction, and a mechanism for translating the generated strings into geometric structures. L-systems were introduced and developed in 1968 by Aristid Lindenmayer, a Hungarian theoretical biologist and botanist at the University of Utrecht. Lindenmayer used L-systems to describe the behaviour of plant cells and to model the growth processes of plant development. L-systems have also been used to model the morphology of a variety of organisms and can be used to generate self-similar fractals.

Read more at: https://en.wikipedia.org/wiki/L-system

This app provides a GUI interface for generating L-Systems inside Autodesk® AutoCAD®.

Features:

• Native AutoCAD GUI palette interface
• Unlimited number of rules
• Fully customizable Grammar in a dedicated tab
• Stochastic/probabilistic rules support
• Automatic randomization of length and angle parameters
• Interactive geometry generation
• Detailed command line output for debugging
• Load/Save custom L-System definitions from/to an XML file
• A Pre-set library with 50 example L-System definitions
• Max Output Sentence length control
• AutoCAD Line and Point objects supported with optional automatic grouping