public static IVisiblyDisposable CreateCenteredSpiral <TInterest>(
IInterestMap <Index3D, TInterest> map,
TInterest interest,
IObservable <Index3D> origin,
IBoundedIndexable <Index3D, bool> shape)
{
Contracts.Requires.That(map != null);
Contracts.Requires.That(origin != null);
Contracts.Requires.That(shape != null);
return(new AreaOfInterest3D <TInterest>(
map, interest, origin, Keys.CreateCenteredSpiral(shape)));
}