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3D-Testplot

>function fx(u,v) &= (2+sin(v)+cos(u))*cos(2*v);
>function fy(u,v) &= (2+sin(v)+cos(u))*sin(2*v);
>function fz(u,v) &= sin(u)+2*cos(v);
>plot3d(&fx(x,y),&fy(x,y),&fz(x,y),xmin=0,xmax=2pi,ymin=0,ymax=2pi, ...
   <frame,>hue,color=red,height=60°,zoom=4,n=200):

3D-Testplot

>load povray;
>u=linspace(0,2*pi,200); v=u'; X=fx(u,v); Y=fy(u,v); Z=fz(u,v);
>pov3d(X,Y,Z,<axis,zoom=4,height=60°,look=povlook(red,>phong))

3D-Testplot

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