band3d_bessel.jl

using GLMakie, LaTeXStrings, SpecialFunctions, Random
Random.seed!(13)
GLMakie.activate!()
set_theme!(theme_black())
fig = Figure(resolution = (1200,800)) 
ax = Axis3(fig; aspect = (1,0.5,0.5), azimuth = 10.42, elevation = 0.027, 
    perspectiveness=0.5)
x = 0:0.1:15
y = -1:0.1:7
horizontal = Point3f.(tuple.(15, y, 3exp.(-(y .-3).^2/3)))
for ν in 0:7
    lines!(ax, x, x*0 .+ ν, besselj.(ν, x) .+ ν/3, linewidth = 2, 
        color = :grey90, label = latexstring("J_{$(ν)}(x)"))
    band!(ax, Point3f.(tuple.(x, ν, ν/3)), 
        Point3f.(tuple.(x, ν, besselj.(ν, x) .+ ν/3)), color = 1:length(x), 
        colormap = :plasma)
    text!(ax, latexstring("J_{$(ν)}(x)"), position = Point3f(15.2,ν, ν/3))
end
band!(ax, Point3f.(tuple.(0, y, 0.0)), 
    Point3f.(tuple.(0, y, 3exp.(-(y .-3).^2/3))), color = rand(length(y)))
band!(ax, horizontal[1:40], reverse(horizontal[42:end]); color = 1:40, 
    colormap = :bone_1)
lines!(ax, horizontal; color= :white, linewidth = 2)
hidedecorations!(ax; grid = false)
fig[1,1] = ax
save("band3d_bessel.png", fig) 
display(fig)