public ZoneEnvelopeViewModel(IDFCommand zone, IDFDatabase idf) : base(null, true) { _idf = idf; _zoneEnvelope = zone; }
public SurfaceEnvelopeViewModel(IDFCommand surface, ZoneEnvelopeViewModel parentZone, IDFDatabase idf) : base(parentZone, false) { _idf = idf; _surface = surface; }