jyviko 514426e5d6 STEP import: a closed spline a face lies across the start of starts clear of the face ...

A face on a B-spline surface closed around u (first and last control columns the same) may lie
across the surface's start without winding round it: the strip on a radius-3000 rational
cylinder whose seam is 0.001 rad into the strip. A kernel's trims run inside the surface's
knots, so its pcurve came back clamped at the start, 2.28 mm off its edge, and the strip was not
imported.

Before seams are added, such a surface is started anew in the middle of the stretch of u the
face leaves free (each loop followed round, unwrapped across the start; a face winding round is
the seams' to handle): the new start inserted to full multiplicity and the piece after it put
before the piece before it, a period on. The same points, a period apart in parameter before
the new start: exact. The face then lies inside the knots.

Fixes kernel step_in::tests::explicit_outer_bound_crossing_a_closed_nurbs_seam_stays_trimmed.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

2026-10-29 23:17:59 -04:00

..

src

STEP import: a closed spline a face lies across the start of starts clear of the face

2026-10-29 23:17:59 -04:00

Cargo.toml

Profiler: commands, feature evaluation, io; diagnostics.profile; CLI --profile

2026-10-27 11:40:49 -04:00