Natural Expression of Physical Models of Impossible Figures and Motions
Tsuruno, Sachiko Sachiko · International journal of Asia digital art and design · 2015
Two-dimensional (2D) drawings of impossible figures are typified by the lithographs of the Dutch artist M.C. Escher, such as “Waterfall,” “Belvedere,” and “Ascending and Descending.” Impossible figures are mental images of solid objects. In other words, a three-dimensional (3D) figure that is visualized intuitively from a 2D drawing of an impossible figure cannot be constructed in 3D space. Thus, in reality, a 3D model of an impossible figure has an unexpectedly disconnected or deformed structure, but the 3D figure corresponds to the 2D figure from a specific viewpoint, although not from other viewpoints. Methods for representing 3D models of impossible figures have been studied in virtual space. The shapes and structures of impossible object have also been studied in real space, but the effects of physical illumination by light and appropriate textures have not been considered. Thus, this paper describes the mimetic surface color and texture adjustment (MSCTA) method for producing naturally shaded and appropriately textured 3D impossible objects under physical light sources. And some creative works applying this method are shown, including a new structure with impossible motion.