Free Images : structure, texture, petal, pattern, blue, jewellery, figure, turquoise, design, symmetry, 3d, graphic, 5, 4, torus, mathematica, cg, parametricplot3d, code, program, algorithm, abstruct, mapping, gemstone, fashion accessory 2680x2731

(* === Following code of Mathematica 8 generates this image. === *) a1 = 10; (* center hole size *) a2 = 4; (* thickness of a torus *) b = 8; (* oct-torus *) c = 0; (* distance from the center of rotation *) d = 6; (* number of torus *) h = 0; (* height of a torus *) SetOptions[ParametricPlot3D, PlotRange -> Full, Mesh -> None, Boxed -> False, Axes -> None, PlotPoints -> 500, ImageSize -> 2600, Background -> RGBColor[{250, 250, 200}/255], PlotStyle -> Directive[Specularity[White, 30], Texture[Import["D:/tmp/71.jpg"]]], TextureCoordinateFunction -> ({#4, #5 b} &), Lighting -> "Neutral"]; f[v_] := TriangleWave[{-1, 1}, v/(2 Pi)]; g[v_] := TriangleWave[{-1, 1}, v/(2 Pi) + 1/4]; x = (a1 - a2 g[t] + f[b s]) Cos[s + Pi/16]; y = (a1 - a2 g[t] + f[b s]) Sin[s + Pi/16] + c; z = (a1 - a2 f[t] - h f[b s]); rm = Table[{x, y, z}.RotationMatrix[2 i Pi/d, {1, 0, 0}], {i, d}]; ParametricPlot3D[rm, {t, 0, 2 Pi}, {s, 0, 2 Pi}] (*--- The Texture Another shapes and colors, and the meaning of this code in the set description *)

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