Computer Aided Design for Origamic Architecture Models with Polygonal Representation

  • Authors:
  • Jun Mitani;Hiromasa Suzuki

  • Affiliations:
  • University of Tokyo;University of Tokyo

  • Venue:
  • CGI '04 Proceedings of the Computer Graphics International
  • Year:
  • 2004

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Abstract

An Origamic Architecture (OA) is a folded sheet of perforatedpaper from which a three-dimensional structure"pops up" when it is opened. It is similar to a "pop-upstory book", but its unique feature is that it is made purelyby cutting a single piece of paper. Because of this limitation,designing an OA requires considerable experience. We proposea computerised method which assists design of OAs.An OA is modelled using a set of planar polygons. Thismodel must satisfy the conditions required of a valid, realisableOA. A unique point of our method is the application ofboolean set operations to the polygons on the unfolded patternto guarantee that the model can be made from a singlesheet of paper. We also present a procedure for checking themodelýs validity. Additionally, we propose methods for creatingopenings, for generating unfolded patterns, and fordisplaying folding animation. We have implemented a systembased on these methods and demonstrated its usefulnessfor creating OA. Our system allows designers to intuitivelydesign OA models and to easily generate the unfolded patterns.