Iris folding is a motif consisting of layered strips of paper, forming a spiral pattern behind an aperture, which can be used to make cards and gift tags. This paper describes an interactive computational tool to assist in the design and construction of original iris folding patterns. The design of iris folding patterns is formulated as the calculation of a circumscribed polygonal sequence around a seed polygon. We analyzed the problem and found that it is possible to compute the positions of vertexes analytically for regular polygon; however, it is not straightforward to do so for irregular polygons, and we used a numerical method for irregular polygons, which can be applied to arbitrary convex seed polygons. The user can experiment quickly with various patterns using the system prior to constructing the motif.
Yuki Igarashi, Takeo Igarashi, Jun Mitani."Computational Design of Iris Folding Patterns.", Computational Visual Media, 2016. accepted. DOI 10.1007/s41095-016-0062-4
Yuki Igarashi, Takeo Igarashi, Jun Mitani."Computational Design of Iris Folding Patterns.", Pacific Graphics 2016 Short Papers, Oct. PDF
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