In order to simulate the whole process of acupuncture treatment, we put forward a methodology based on improved mass-spring model to simulate the skin rotation by using method of Mathematical Physics. Firstly, we simulate the subsidence of skin when the acupuncture needle exerts external force on the skin by using the improved mass-spring model. And then, we adopt Verlet integration to update mass points' position and draw dynamic deformation of the skin when the skin mesh re-gains balance. Finally, we implement the simulation experiments in the OpenGL environment. Experimental results show that the methodology we present can simulate the skin rotation deforma-tion realistically and well meet the requirement of real-time.
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