Even though arbitrary surface can be approximated by a dense triangle mesh, the pattern of such mesh becomes too complicated. Unfoldable surfaces are a subset of ruled surfaces, and other surfaces cannot be unfolded to a plane without any distortions. Nowadays there are some software for making unfolded patterns from 3D polygonal models, and a lot of people enjoy making papercraft models as a hobby. To achieve this, making papercraft from an unfolded pattern of the model is one of the simplest approaches. Realizing such 3D figures as physical objects is useful as a tool for engineering prototyping and for educational purposes. Although we can see and evaluate them by displaying them on a screen, we cannot touch them because they are just digital data. Introduction Designing 3D figures on a computer is quite common these days. Keywords Triangle Mesh Model, Subdivision, Papercraft, Stripification 1. With this method, the unfolded pattern for curved papercraft models can be generated by simple operations. Edge-swap operation is also applied to make the model becomes smooth. We then subdivide the contour edges to create triangles in the thin strips. Firstly we unfold a low triangle mesh model and classify edges into two groups: inner edges and contour edges. This feature is useful for designing models for curved papercraft-toys. The triangles in the strips created by our method are quite thin, so the strips can be treated as approximate unfoldable surfaces.
Strip creation for designing curved papercraft models adopting mesh subdivision scheme Jun Mitani Department of Computer Science, University of Tsukuba, Japan Abstract We propose a new method for creating smooth mesh models that consist of a set of smooth strips.
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