Making papercraft is one of effective ways to realize the virtual 3D shapes designed by using 3DCG/CAD software readily. Since commercial software for making developments of arbitrary polyhedron was released recently, many papercraft works designed by consumers have been uploaded on the Web. According to the fact that complicated works are commonly designed these days, some problems have actualized. For instance, it requires repeat of tedious edit of developments if the user has to modify a part of the original 3D shape. If the shape is complicated, it is difficult to make person to understand the way of assembling. In this paper, we propose new interface to solve these problems by providing a new method that adopts the change of 3D shape to the development and support for understanding the way of assembling. We implemented the system on a PC, and evaluated the system by referring the results of user tests.
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