/// <summary>
/// Extracts the contours around all voxel values in the volume that have the given foreground value.
/// All other voxel values (zero and anything that is not the foreground value) is treated as background.
/// Contour extraction will not take account of holes, and hence only return the outermost
/// contour around a region of interest.
/// </summary>
/// <param name="volume"></param>
/// <param name="foregroundId">The voxel value that should be used as foreground in the contour search.</param>
/// <param name="smoothingType">The smoothing that should be applied when going from a point polygon to
/// a contour.</param>
/// <returns></returns>
public static IReadOnlyList <ContourPolygon> ContoursFilled(
this Volume2D <byte> volume,
byte foregroundId = 1,
ContourSmoothingType smoothingType = ContourSmoothingType.Small)
=> ExtractContours.ContoursFilled(volume, foregroundId, smoothingType);
