SPLINE's Knots, Object, start/end Tangency and toLerance options printed
"not available yet". Fit-point splines now take a knot parametrisation
(chord, square root, uniform), end tangents (clamped cubic with derivative
constraints) and a fit tolerance (least-squares approximation with the
fewest control points that stay within it). The spline keeps these options
so grip and SPLINEDIT edits refit the same way; DXF writes the tolerance
(44) and tangents (12/13) and recovers the parametrisation from the knots.
Object turns 2D/3D polylines with straight segments (PEDIT Spline output)
into splines through their vertices.
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
SPLINE Close now builds a smooth closed (periodic) curve through the fit points
instead of repeating the first point. The geometry gets Spline::from_fit_points_closed:
chord-length parameters including the closing chord, a periodic knot vector, and the
first three control points repeated at the end. The fit data no longer duplicates the
first point. DXF writes group 70 bit 2 (periodic) for it, and a file whose closed spline
needs refitting is refitted closed. SPLINEDIT Close/refit/move and fit-point grips keep
a closed spline periodic.
SPLINE Method asks Fit/CV, and CV continues as SPLINE by control vertices. Knots, Object,
start/end Tangency and toLerance report "not available yet" and stay at the prompt.
Garbage text reports "Point or option keyword required.".
POLYGON with a typed radius puts the bottom edge horizontal for Inscribed and for
Circumscribed. The JSON form uses the same orientation when no angle is given.
CIRCLE reports "Point or option keyword required." for an invalid token at the centre
prompt, and "Invalid point." at the 3P/2P point prompts, then asks again.
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
