film_core/layout.js

function rotatePoint(centerX, centerY, distance, angleInDegrees) {
    const angleInRadians = angleInDegrees * (Math.PI / 180);
    
    const x = centerX + (distance * Math.cos(angleInRadians));
    const y = centerY + (distance * Math.sin(angleInRadians));
    
    return { x, y, z : 0 };
}
let plastic = [
  'white_plastic',
  'green_plastic',
  'neonblue_plastic',
  'white_plastic',
  'green_plastic',
  'neonblue_plastic'
]
let obj = [
  '16mm_2in',
  //'16mm_2in_np',
  '16mm_3in',
  //'16mm_3in_np',

  '8mm_2in',
  //'8mm_2in_np',
  '8mm_3in',
  //'8mm_3in_np',

  '35mm_2in',
  //'35mm_2in_np',
  '35mm_3in'//,
  //'35mm_3in_np'
];
let meta = {
  objects : []
}
let starting = 15; //(360 / (obj.length * 2));
for (let i = 0; i < obj.length; i++) {
  meta.objects.push ({
      name : `film_core_${obj[i]}`, 
      material : plastic[i],
      position : rotatePoint(0, 0, 120, starting + (i * (360 / obj.length))),
      rotation : {
        x : 0,
        y : 90,
        z : starting + (i * (360 / obj.length))
      }
  });
}

console.log(JSON.stringify(meta, null, '\t'))