Three-dimensional Fractal Graphic Description Language System Based on L-system

In order to meet the requirement of three-dimensional fractal graphics description,this paper proposes a new three-dimensional fractal graphics description language system called E-L system on the basis of the traditional L-system.In E-L system,the traditional symbols of L-system are expanded to support three-dimensional fractal graphics description.The intrinsic randomness is added to the symbol for more reality fractal graphics.The type and form of symbol is limited for providing a more convenient way to express vary acts.A three-dimensional fractal graphics morphology control way is designed to overcome the shortcoming of the traditional final fractal graphics which is always beyond control.Experimental result shows that the E-L system has a very good description capability for self-similar three-dimensional fractal graphics.