A way to draw a mesh with julia.

sphere.jl

using Meshing
using LinearAlgebra
using GeometryTypes
import Makie: wireframe

wireframe(v,f) = wireframe(HomogenousMesh(v,f))
wireframe(v,t::Array{Int64,2}) = wireframe(v,[Face(t[i,:]...) for i in 1:size(t,1)])

sdf = SignedDistanceField(HyperRectangle(Vec(-1,-1,-1.),Vec(2,2,2.))) do v
    sqrt(sum(dot(v,v))) - 1 # sphere
end

m = marching_cubes(sdf)

f,v =  faces(m), vertices(m)

wireframe(v,f)