用面向对象的L系统模拟树的生长

L-systems have been used successfully in representing visualization and simulation of the development and growth of living organisms like plants, cells and especially trees. In practice, when we develop a game or an animation movie,　one problem we encountered is that application programmers usually derive a new code from scratch for each application even though L- systems have a basic object-oriented flavor. In this paper, I demonstrate a simple object-oriented L-system for simulation and visualization of a variety of trees, The functions of it includes: simulation of the growth of a tree,simple interaction between tree and environment and so on. Programmers can change shape by inputing defferent parameters or letter string. Programmers also can control the growth rate of a tree.If you want only to render a static tree,you can turn off animation. In this case, the code was developed from the basic L system in a very short time.