Recursive Drawing Demonstration

Program Tree1

This program draws repeating pictures by recursion.
The method draw() is recursively called with a set of parametes specifying a tree branch, Each call of this method is processed as follows.
- If the lenght of the branch is not less than 1/3 of LeaveSize, a branch is drawn.
- If the lenght of the branch is less than LeaveSize a leave is drawn.
- If the current branch is not too small, branch() is called recursively for the next left and right branches of reduced sizes.