This paper presents a novel physically-based parallel approach to simulate tree motion using GPU in real-time. The tree’s kinematic principle and the hierarchical matrix structure model (namely HMSM)’s parallel mechanism are analyzed to realize the speedup of the trees animation on CUDA. Firstly

we briefly introduce a method of physically-based tree motion called hierarchical matrix structure model (namely HMSM) driven by the external forces such as wind; then we analyze this model in a parallel management theoretically in detail; thereafter

describe the design of parallel structure and parallel algorithm of the tree’s motion

which are suitable to implement on CUDA;finally

realize the physically based motion simulation on GPU. Experimental results show that the presented approach can animate trees realistically and naturally

and simulate physically based trees motion in real-time. Moreover

the approach give good clues for speeding up the algorithm for the computer animation.