Log three instances

gistfile1.txt

function logThreeInstances(className) {
  threeTypeMap[className] = 0;
  
  const orig = THREE[className];
  const tmp = function() {};
  tmp.prototype = THREE[className].prototype;
  
  function newConstructor() {
    orig.apply(this, arguments)
    threeTypeMap[className]++;
  }
  
  newConstructor.prototype = new tmp();
  newConstructor.prototype.constructor = newConstructor;
  
  THREE[className] = newConstructor;
}

function printInstanceLogs() {
  requestAnimationFrame(printInstanceLogs)
  for (var key in threeTypeMap) {
    if (THREE.LOG)
      console.log(key, ":", threeTypeMap[key])
    threeTypeMap[key] = 0;
  }
}
printInstanceLogs()

logThreeInstances("Vector3");
logThreeInstances("Vector2");
logThreeInstances("Quaternion");
logThreeInstances("Matrix4");