// Demo3DLinesForPShape -- demo coordinates used for a 3D PShape's vertex()
// calls using lines, D. Parson, 9/30/2021

void setup() {
  size(1000, 900, P3D);
}

void draw() {
  push();
  background(255);
  stroke(0);
  strokeWeight(6);
  // ortho();
  translate(width/4, height*.76, 0);
  
  // TOP SIDE:
  line(-100, -100, -100, 100, -100, -100); // L-R, top, back
  line(-100, -100, -100, -100, -100, 100); // L, top, front-to-back
  line(100, -100, -100, 100, -100, 100); // R, top, front-to-back
  line(-100, -100, 100, 100, -100, 100); // L-R, top, front
  
  //// BOTTOM SIDE
  line(-100, 100, -100, 100, 100, -100); // L-R, bottom, back
  line(-100, 100, 100, -100, 100, -100); // L, bottom, front-to-back
  line(100, 100, -100, 100, 100, 100); // R, bottom, front-to-back
  line(-100, 100, 100, 100, 100, 100); // L-R, bottom, front
  
  //// LEFT SIDE
  line(-100, -100, 100, -100, 100, 100);
  line(-100, -100, -100, -100, 100, -100);
  
  //// RIGHT SIDE
  line(100, -100, 100, 100, 100, 100);
  line(100, -100, -100, 100, 100, -100);
  pop();
}