public override int GetHashCode()
{
var partsHashCode = Parts.Aggregate(0, (current, part) => current ^ part.GetHashCode());
var pointsHashCode = Points.Aggregate(0, (current, point) => current ^ point.GetHashCode());
return(BoundingBox.GetHashCode() ^ NumberOfParts.GetHashCode() ^ NumberOfPoints.GetHashCode()
^ partsHashCode ^ pointsHashCode);
}
public override T Aggregate <T>(Func <T, DocumentPart, T> f, T state)
{
T nstate = f(state, this);
return(Parts.Aggregate(nstate, (st, part) => part.Aggregate(f, st)));
}