In pattern design of a 3D plush toy model, the key task is to draw seam lines on the 3D surface to divide it into surface patches to obtain 2D patterns. However, how to draw seam lines requires a lot of professional knowledge and skills of pattern design. In this paper, we present a new method that can guide and assist users to create 2D patterns of a 3D toy model efficiently. Based on a component-based modeling method, we build a template library including the information of 3D components and seam lines. To design patterns of a toy, firstly, the most similar template will be retrieved from the library, then seam lines will be generated on the 3D surface automatically by mapping the template. Finally, 2D patterns will be obtained using a flattening method. The proposed method is easy-to-lean and easy-to-use, and it does not require the user to have much experience of pattern design. It can improve the efficiency of design and shorten the learning time for new designers and non-professionals.

在3D毛绒玩具模型的图案设计中，关键任务是在3D曲面上绘制接缝线，以将其划分为曲面补丁以获得2D图案。但是，如何绘制接缝线需要大量的图案设计专业知识和技能。在本文中，我们提出了一种新方法，可以指导和协助用户有效地创建3D玩具模型的2D模式。基于基于组件的建模方法，我们构建了一个包含3D组件和接缝线信息的模板库。为了设计玩具的图案，首先，将从库中检索最相似的模板，然后通过映射该模板在3D表面上自动生成接缝线。最后，将使用展平方法获得2D图案。所提出的方法易于使用且易于使用，并且不需要用户有很多图案设计经验。它可以提高设计效率，并缩短新设计师和非专业人士的学习时间。