关键词: 植物, 虚拟仿真, 动态, 位置动力学

Abstract: Realistic plant dynamic simulation is one of the difficult problems in modern agriculture and botany science. It is also a hot spot in computer science application and virtual reality technology research area. Construction of realistic dynamic model based on plant physical properties and application of dynamic virtual simulation algorithm based on physical process is an effective way to improve reality results. Position-based dynamics is a new method simulating effective modeling method for object kinematics and dynamic process with high efficiency, including dynamic physical process of rigid and flexible targets. This paper constructed a plant dynamic virtual simulation model based on position-dynamics and introduce distance and angle constraint condition by taking maize as an example, so as to realize the dynamic virtual simulation of maize major organ, plant and colony under natural condition and obtain the maize 3-dimensional visual simulation result. This simulation process had higher implementation efficiency comparing to the traditional mass-spring-based models. The presented method provided new references for studying plant dynamic virtual simulation method.

Key words: plant, virtual simulation, dynamic, position based dynamics