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arXiv · 2305.01467

Folding Every Point on a Polygon Boundary to a Point

Nattawut Phetmak·Jittat Fakcharoenphol
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Abstract

We consider a problem in computational origami. Given a piece of paper as a convex polygon $P$ and a point $f$ located within, fold every point on a boundary of $P$ to $f$ and compute a region that is safe from folding, i.e., the region with no creases. This problem is an extended version of a problem by Akitaya, Ballinger, Demaine, Hull, and Schmidt~[CCCG'21] that only folds corners of the polygon. To find the region, we prove structural properties of intersections of parabola-bounded regions and use them to devise a linear-time algorithm. We also prove a structural result regarding the complexity of the safe region as a variable of the location of point $f$, i.e., the number of arcs of the safe region can be determined using the straight skeleton of the polygon $P$.

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Nattawut Phetmak, Jittat Fakcharoenphol. 2023-05-02. Folding Every Point on a Polygon Boundary to a Point. https://arxiv.org/abs/2305.01467

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