Research On The 3D Modeling And Realistic Rendering Of Trees

Now the main method to simulate plant form and structure is based on fractal, which is better in realizing the trees' complex structure but can not express the properties of plant form exactly. With the plant bionomy the tree's growth mechanism is analysed. Tree's growth model and data structure are builded, and the way of traversaling is advanced . Aiming at the lack of traditional ploting method in the areas of three dimension graphics, the B-spline surface is adopted. In order to more easily build the B-spline surface the control points are replaced with one center point during the storage, and make it clear to simulate the curve of branches. Yong's module and quality were taken into account for the calculating of branch distortion , and physical model was constructed to simulate the real configuration of the trees in the affect of gravity and wind . At last the realistic rendering of tree is taken by the way of illumination , texture mapping and model reduction.