该代码采用递归算法编程实现下列分形树，并且提供界面允许用户输入分形树迭代次数,有程序绘制树形分形体并动画显示分形树生长过程 代码内含文档说明 -Recursive algorithm using the programming code to achieve the following fractal tree, and provides the interface allows the user to enter iteration fractal tree, the procedur