Unity-based Virtual Reality Chinese Medicine Massage Teaching System

TCM massage is a very safe and effective treatment method,and the state has given more and more attention and support to the education of TCM massage.This paper researches and develops a virtual reality Chinese medicine massage teaching system based on Unity.Aiming at the problem that the current mass spring model is not realistic enough to simulate the deformation of human tissue,this paper proposes an improved mass spring model based on a fixed support layer,and uses the midpoint average algorithm to solve the differential equation of motion;and for the accuracy and time performance of collision detection In this paper,an octree-based ray detection algorithm scheme is designed for human body mass point collision detection,which solves the problems of insufficient simulation level and unsmooth experience in the system.The main research contents and innovations are as follows:(1)Aiming at the problem of how the mass spring model conforms to human mechanics and has high time performance in virtual massage,a mass spring model based on a fixed support layer is proposed,through multi-layer springs and one-to-many spring connections between layers Simulate the physical texture of the real human body;at the same time,use the midpoint average algorithm as the solution algorithm for the differential equation of particle motion.Through the comparative experiment with the real human body,the effectiveness of the improved particle spring model used in the system is verified,and it is applied in the virtual reality TCM massage teaching system.(2)Aiming at the problem of how the collision detection of the human body model can make accurate judgments while reducing the time complexity,a ray detection scheme based on octree is proposed,which uses the octree algorithm to obtain the particles that may collide,and then use ray detection on these particles.The comparative experiments of the proposed collision detection scheme in different scenarios verify the feasibility and effectiveness of the scheme.(3)Combining the improved particle spring model and the improved collision detection scheme to develop a virtual reality TCM massage teaching system,using software engineering to conduct feasibility analysis,demand analysis,overall design and database design for the virtual reality TCM massage teaching system,and then to the system The important functions are displayed and flow charted,and finally passed the system function test,and the results are in line with expectations.