Plot3d Example Maple Source Code

    The plot3d example is taken from Maple Help.
    
 c1 := [cos(x)-2*cos(.4*y), sin(x)-2*sin(.4*y), y];
 c2 := [cos(x)+2*cos(.4*y), sin(x)+2*sin(.4*y), y];
 c3 := [cos(x)+2*sin(.4*y), sin(x)-2*cos(.4*y), y];
 c4 := [cos(x)-2*sin(.4*y), sin(x)+2*cos(.4*y), y];
 opts:=grid = [25, 15], style = patch, 
      color = [default, cyan, yellow], 
      transparency = .5, plotlist:
 plot3d([c1, c2, c3], x = 0 .. 2*Pi, y = 0 .. 10, opts);