copy method

@override Object3D copy(Object3D source, [ bool? recursive ])

Implementation

@override
copy(Object3D source, [bool? recursive]) {
  super.copy.call(source);

  PointLight source1 = source as PointLight;

  distance = source1.distance;
  decay = source1.decay;

  shadow = source1.shadow!.clone();

  return this;
}