code: function getMinMax(attribute, start, count) {
        var output = {
          min: new Array(attribute.itemSize).fill(Number.POSITIVE_INFINITY),
          max: new Array(attribute.itemSize).fill(Number.NEGATIVE_INFINITY)
        };
  
        for (var i = start; i < start + count; i++) {
          for (var a = 0; a < attribute.itemSize; a++) {
            var value = attribute.array[i * attribute.itemSize + a];
            output.min[a] = Math.min(output.min[a], value);
            output.max[a] = Math.max(output.max[a], value);
          }
        }
  
        return output;
      }
docs: Get the min and max vectors from the given attribute
  @param  {THREE.BufferAttribute} attribute Attribute to find the min/max in range from start to start + count
  @param  {Integer} start
  @param  {Integer} count
  @return {Object} Object containing the `min` and `max` values (As an array of attribute.itemSize components)