Plant 3d Modeling Method Based On L-systems Research And To Achieve

This paper advances a novel dynamic growth model of fractal collection, in contrast to the old static growth model , which is of a shortage of overly repeating the same process in create a fractal graphic. The new model of fractal collection can evidently reduce the number of recursion in the middle of generating graphic, make the course moresimply and more effectively. Later this new model has been used in the improvement L-system algorithms of plant modeling, receive good result, and it testify that this new model is of validity. After analyzing L-system theory, the paper give a new plant property arithmetic (including some formulas) which can enhance the reality of a computer tree figure .Seven typical three dimensions plant model are afforded on the basis of the above new conclusion, acquire seven high quality plant graphics. In order to better simulating the crook branch, the paper makes use of the sweeping surface in free-form curve and surface. The technique of sweeping surface is a useful 3D geometric construction method in the CAD, CAM field. A smooth curve cylinder geometry object trunk which has good geometric continuity is produced 6y trie way in trie later .So a beautiful 'curve structure ' tree appears .