SURFACE QUALITY REQUIREMENTS — read befo

SURFACE QUALITY REQUIREMENTS — read before generating geometry: Build this as a single continuous, faired hull surface, the way a surfboard shaper's blank is faired — like a real surfboard or foilboard, not a faceted or segmented CAD model. Use smooth NURBS/spline surfaces with G2 (curvature) continuity throughout, not G0 (positional) or G1 (tangent) continuity. There should be no visible panel lines, facets, kinks, or polygon edges anywhere on the hull EXCEPT the two deliberate features called out below. The rocker line, outline curve, and rail profile should each be built from a single smooth spline running the full length of the board, passing through the stations given — not straight-line segments joined at each station. Treat the station numbers as control points on a continuous curve, not as hard transitions. The rail should transition from soft/rounded (nose) to hard chine (tail) as a gradual, continuously blending taper — the chine should fade in progressively, not switch on abruptly at a boundary line. Think of it as the chine "growing" out of a round rail over the transition zone, fully faired into the surrounding surface, not a separate panel bolted on. The ONLY places a crisp, non-blended edge should exist are: (1) the hard chine line itself once fully formed, from roughly mid-board to the tail, and (2) the tail edge. Everywhere else — nose, deck, bottom concave, rail-to-deck transition — must be smoothly faired with no visible seams. If your default output method is polygon/mesh-based, increase surface subdivision/resolution significantly and apply smoothing/fairing before finalizing, so the result reads as an organic, hand-shaped surfboard hull.

Parameters

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