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『数覚とは何か』 (* === Following code of Mathematica 8 generates this image. === *) a = 4; (* center hole size of a torus *) b = 4; (* tetra-torus *) c = 1; (* distance from the center of rotation *) d = 6; (* number of torus *) h = 1; (* height of a torus *) SetOptions[ParametricPlot3D, PlotRange -> Full, Mesh -> None, Boxed -> False, Axes -> False, PlotPoints -> 400, ImageSize -> 3000, Background -> Darker[Orange, 0.8], PlotStyle -> Directive[Specularity[White, 30], Texture[Import["D:/tmp/71.jpg"]]], TextureCoordinateFunction -> ({#4 , #5 2 Pi} &), Lighting -> "Neutral"]; f[v_] := Sin[2 Sin[Sin[Sin[v]]]]; x = (a - Cos[t] - f[b s]) Cos[s] + c; y = (a - Cos[t] - f[b s]) Sin[s] + c; z = (a - Sin[t] - h f[b s]) + c; rot = Table[{x, y, z}.RotationMatrix[2 i Pi/d, {2, 1, 0}], {i, d}]; ParametricPlot3D[rot, {t, 0, 2 Pi}, {s, 0, 2 Pi}] (*--- The Texture is this: www.flickr.com/photos/tanaka_juuyoh/5239255695/ *)

The free high-resolution photo of abstract, structure, plant, texture, leaf, flower, pattern, food, green, produce, vegetable, geometry, yellow, gourd, sculpture, cool image, design, symmetry, 3d, graphic, shape, torus, mathematica, cg, parametricplot3d, code, program, algorithm, mapping, geometricsculpture, serpent, flowering plant, land plant

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