IPaveShank

Returned by PaveShankApi and PaveShankBuilderApi.Create - a classic band with one profile and one size, carrying N automatic rows of pavé stones on its outer surface. Multiple gems, so no single mother gem. Adds to IParametricObject:

Member	Meaning
RingSizeLabel / RingSizeRegion / RingDiameterMm	Ring size
TopProfile	The band section - IClassicProfile. The band has one profile and one size, so there is no mid, bottom or external profile
Advanced	The band opening - IClassicAdvanced
Rows	How many rows, how far apart and where they run - IPaveShankRows
Prong	The bead prongs - IPaveShankProng
Gems	The stones - IClassicGems. GemSize is the central size
GemsEnabled / SetGemsEnabled	Master toggle for the stones
CuttersEnabled / SetCuttersEnabled	Whether the gem drill cutters are built
SetElement(element)	Applies a saved MultiRowShank element; the ring size stays

Every setter regenerates the shank in place, re-baking stones, beads and cutters.

From Gems, these are the ones that matter here: GemSize (central stones), MinDistance (gap along a row), Vertical (how deep the stones sit), TypeProng ("NONE" or "SHARED"), ProngHeight (bead length), ProngMoveInZ (how far the top of the bead sits above the girdle), GemInside and ExtensionForManufacturing. AutomaticProngDiameter and ProngDiameter are ignored: the bead size is Prong.Diameter.

Rows (IPaveShankRows)

Member	Meaning
Count	Rows across the band, 1 to 9. With 3 or more, the two outermost rows are lateral and the rest central
Distance	Gap between the stones of two neighbouring rows, mm (edge to edge). The row pitch is automatic
LateralGemSize	Stone size of the two outermost rows, mm (3 or more rows)
LayoutMode	"FULL", "SIDE_ANGLE" or "TOP_ANGLE"
StartAngle / EndAngle	Degrees - used with "SIDE_ANGLE"
TopAngle	Total arc in degrees - used with "TOP_ANGLE"
SetCount, SetDistance, SetLateralGemSize	The rows
SetLayoutMode, SetSideAngles(start, end), SetTopAngle	Where the rows run

Neighbouring rows are always staggered, so every stone sits in the hollows of the next row. The full rows carry the stations and the staggered ones sit between them: with 3 rows the central row is full and the laterals have one stone fewer; with 5 rows, rows 2 and 4 are full, the middle row has one stone more and the laterals one fewer.

Beads (IPaveShankProng)

Member	Meaning
Diameter	Diameter of every bead, mm - they all share one size
EdgeOffset	How far the beads on the band edges are pushed outward, mm; negative pulls them in
EndOffset	How far the bead past the last stone of each row is moved along the row, mm; negative pulls it in over the stone
SetDiameter, SetEdgeOffset, SetEndOffset

There is one bead in every hollow between stones, centred in it whatever its size. Changing Diameter makes the beads bite more or less into the stones without moving them.