File:Ripple Surface.png

DescriptionRipple Surface.png	A 3D rendering of the surface given by: ${\displaystyle z=\cos \left(x^{2}+y^{2}\right)}$
Date	12 April 2007 (upload date)
Source	Self-made, using Mathematica 5.1.
Author	Inductiveload

This code does not require any modules to be loaded. It uses Chris Hill's Anti-aliasing code.

gr = Plot3D[Cos[x^2 + y^2],
    {x, -4, 4},
    {y, -4, 4},
    PlotPoints -> 600,
    Mesh -> False,
    BoxRatios -> {2, 2, 0.2},
    Ticks -> False,
    Axes -> False,
    Boxed -> False,
    ImageSize -> 800]

aa[gr_] := Module[{siz, kersiz, ker, dat, as, ave, is, ar},
    is = ImageSize /. Options[gr, ImageSize];
    ar = AspectRatio /. Options[gr, AspectRatio];
    If[! NumberQ[is], is = 288];
    kersiz = 4;
    img = ImportString[ExportString[gr, PNG, ImageSize -> (is kersiz)], PNG];
    siz = Reverse@Dimensions[img[[1, 1]]][[{1, 2}]];
    ker = Table[N[1/kersiz^2], {kersiz}, {kersiz}];
    dat = N[img[[1, 1]]];
    as = Dimensions[dat];
    ave = Partition[Transpose[Flatten[
        ListConvolve[ker, dat[[All, All, #]]]] & /@ Range[as[[3]]]], 
    as[[2]] - kersiz + 1];
    ave = Take[ave, Sequence @@ ({1, Dimensions[ave][[#]], kersiz} & /@ Range[
    Length[Dimensions[ave]] - 1])];
    Show[Graphics[Raster[ave, {{0, 0}, 
          siz/kersiz}, {0, 255}, ColorFunction -> RGBColor]], PlotRange -> \
{{0, siz[[1]]/kersiz}, {0, siz[[2]]/kersiz}}, ImageSize -> is, AspectRatio -> 
      ar]
    ]
finalgraphic = aa[gr]

I, the copyright holder of this work, release this work into the public domain. This applies worldwide. In some countries this may not be legally possible; if so: I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.