example/example.js
function f(x,y,z) {
  return x*x + y*y + z*z - 2.0
}
function f(x,y,z) {
  return x*x + y*y + z*z - 2.0
}
function f ( x , y , z ) { return x * x + y * y + z * z - 2.0 }
Plot level set of f = 0
Plot level set of f = 0