This paper starts with the external visual performance of animation characters, discusses the design style of three-dimensional animation characters, and integrates with traditional art, and makes a new research and attempt from the combination of art and technology, so that nonprofessionals can easily design three-dimensional animation characters. Aiming at the problem of low recognition level of behavior control data points in traditional 3D virtual animation model method, a method of role modeling and behavior control in 3D virtual animation design is designed. Based on the physical engine, a dynamic model of the character skeleton is established, and the joint motion trajectory is simulated to complete the real-time rendering of the effect. Combined with the case analysis, it is discussed from the aspects of animation character modeling, user experience, and so on. Experimental results show that, compared with traditional methods, the data points collected by the proposed method in the process of character behavior control are more dense, the animation effect is more realistic, and it is highly effective and superior.

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