| 1 | // from http://math.uchicago.edu/~cstaats/Notes_and_papers_files/asymptote_tutorial.pdf
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| 2 | settings.outformat = "svg";
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| 3 | settings.prc = false;
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| 4 | settings.render=12;
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| 5 |
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| 6 | size(300.0pt,0);
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| 7 | import graph3;
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| 8 | currentprojection = perspective(30*dir(75,0));
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| 9 | real r1=5, r0=1;
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| 10 | int nu = 36, nv = 36;
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| 11 | path3 crossSection = Circle(r=r0, c=(r1,0,0), normal=Y, n= nu);
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| 12 | pen colorFunction(int u, real theta) {
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| 13 | real z = sin(u/nu * 2pi);
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| 14 | real t = (z + 1) / 2;
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| 15 | return t*red + (1-t)*lightblue;
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| 16 | }
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| 17 |
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| 18 | surface torus = surface(crossSection, c=(0,0,0), axis=Z, n=nv,
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| 19 | angle1=90, angle2=410, color=colorFunction);
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| 20 | draw(torus);
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