/// <summary>
/// Initializes a new instance of <see cref="SurfaceRegion"/>.
/// </summary>
/// <param name="planet">The planet on which this region is found.</param>
/// <param name="latitude">The latitude of the center of the region.</param>
/// <param name="longitude">The longitude of the center of the region.</param>
/// <param name="latitudeRange">
/// <para>
/// The range of latitudes encompassed by this region, as an angle (in radians).
/// </para>
/// <para>
/// Maximum value is π (a full hemisphere, which produces the full globe).
/// </para>
/// </param>
public SurfaceRegion(Planetoid planet, double latitude, double longitude, HugeNumber latitudeRange)
: base(planet.Id, new Frustum <HugeNumber>(2, planet.LatitudeAndLongitudeToVector(latitude, longitude) * (planet.Shape.ContainingRadius + planet.Atmosphere.AtmosphericHeight), HugeNumber.Min(latitudeRange, HugeNumber.Pi), 0))
{
}
/// <summary>
/// Initializes a new instance of <see cref="SurfaceRegion"/>.
/// </summary>
/// <param name="planet">The planet on which this region is found.</param>
/// <param name="position">The normalized position vector of this region.</param>
/// <param name="latitudeRange">
/// <para>
/// The range of latitudes encompassed by this region, as an angle (in radians).
/// </para>
/// <para>
/// Maximum value is π (a full hemisphere, which produces the full globe).
/// </para>
/// </param>
public SurfaceRegion(Planetoid planet, Vector3 <HugeNumber> position, HugeNumber latitudeRange)
: base(planet.Id, new Frustum <HugeNumber>(2, position * (planet.Shape.ContainingRadius + planet.Atmosphere.AtmosphericHeight), HugeNumber.Min(latitudeRange, HugeNumber.Pi), 0))
{
}