project-3d-to-2d.js

// List of 3D coordinates
const vertices = [
  [-0.5, 0, -0.5],
  [0.5, 0, -0.5],
  ...
];
  
// A utility that projects 3D points to 2D screen-space
// Using a virtual 'camera' that has a 3D position and target
// And viewport width and height
const position = [ 1, 1, 1 ];
const target = [ 0, 0, 0 ];
const project = createCamera({ position, target, width, height });

// Project the 3D to 2D
const screenPoints = vertices.map(p => project(p));

// ... Now draw the 2D points somehow (e.g. as paths)