This paper proposes an extension of combinatorial design of petaloid smocking via regular polygon pasting. We have proposed a method for petaloid smocking pattern generation and combinatorial design. Although it can construct the crease pattern of petaloid smocking by preserving the labels on folding lines, combinatorial design was rather limited due to the constraints induced from regular polygons. In this paper we extend the designable objects to general polygon twists based on regular polygon pasting, and show their geometric characteristics. Also, we propose a method for constructing the crease pattern of combinatorial petaloid smocking based on polygon twists. The proposed method is implemented using GeoGebra, and it is validated via clothes making with a newly designed combinatorial petaloid smocking.

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[in Japanese]

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This paper presents a method for designing 3D ambiguous objects that can be produced by mold casting. The ambiguous objects are 3D solids that give two quite different appearances when seen from two special viewpoints. They can be constructed by 3D printers, but cannot necessarily be constructed by die casting and hence are not suitable for mass production. In this paper we concentrate on one class of ambiguous objects called ambiguous tilings, and propose a method for designing 3D objects that can be tapered monotonically and consequently can be drawn from the mold. This method enables us to apply the ambiguous tiling to real-life uses such as artistic fences and lattice windows.

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This paper introduces a projection mapping where the side images of a sociable cart "SC-1" with embedded displays on the front, back, left, and right, and the image projected on the floor are linked. This work is produced using interaction technology with realtime CG, a LiDAR and so on, and the floor image and the cart side image are made to react to the movement of the cart. The images on the floor and on the sides of the cart work together, and a whole scene is created. The produced work was exhibited at the opening event of the Aichi International Convention & Exhibition Center "Aichi Sky Expo" for 3 days from August 30, 2019.

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