final class ResultSet {
  int length;
  vec3f* diffuse, emissive, normal;
  float* distance;
  bool* fromInside;
  [...]
  ResultAccessor opIndex(int i) { return ResultAccessor:(this, i); }
}

struct ResultAccessor {
  ResultSet mine;
  int offset;
  alias diffuse = mine.diffuse[offset], emissive = mine.emissive[offset];
  alias normal = mine.normal[offset];
  alias distance = mine.distance[offset];
  alias fromInside = mine.fromInside[offset];
  [...]
}