一个LS文法系统。用分形技术生成一排树，模拟自然景观。参数由自己设置。-a grammar system. Fractal technology generated a row of trees, simulating the natural landscape. Set up by its own parameters.

l system 算法和模拟的小程序，3D,植物的模型模拟，分形的算法-l algorithm and system simulation of small procedures, 3D plant model simulations, fractal algorithms