光影响下的植物生长模拟方法与可视化建模

Plant Growth Simulation Method and Visual Modeling by Effect of Illumination

主要研究光影响下的植物生长模拟方法。利用计算机技术动态模拟虚拟植物与光照之间的交互过程,研究光对植物生长过程的形态变化及生理影响;建立了一种植物与环境交互的光照模型;提出了一种逆光线跟踪算法对光线进行跟踪;引入遮挡因子用以计算与表示光照辐射能量;并根据植物所获得光能的多少计算出新生叶片的大小和是否分枝;根据光源位置计算出植物茎叶的偏转角度;最后利用计算机技术对实验进行仿真,动态地模拟了植物在光影响下的形态变化和生长过程,逼真地实现了植物的向光性。

The simulation approach of plants＇ growth was mainly discussed when affected by sunlight. Computer technology was utilized to dynamically simulate the interactive process between virtual plant and illumination. Plants＇ growing process and their changes were studied in morphology when influenced by sunlight. An interactive illumination model was established between plants and environment. An anti-sunlight trace algorithm was applied to trace the sunlight. Meanwhile,a new concept named shading coefficient was used to compute and express the sunlight radiation energy. According to sunlight＇ s energy, new leaves＇ size and whether there would be branches could be decided. The stems and leaves＇ deflective angle of plants could also be decided according to the sunlight source＇ s location. Finally, computer technology was a- dopted to conduct the plants＇ growth simulation. And the plants＇ changes in morphology and their growing process when affected by sunlight were dynamically simulated,with the plants＇ phototropism vividly realized.