Vec6i constructor
Implementation
factory Vec6i(int v1, int v2, int v3, int v4, int v5, int v6) {
  final p = calloc<cvg.Vec6i>()
    ..ref.val1 = v1
    ..ref.val2 = v2
    ..ref.val3 = v3
    ..ref.val4 = v4
    ..ref.val5 = v5
    ..ref.val6 = v6;
  return Vec6i._(p);
}