forked from 1b-agent/opencadstudio-upstream
Claude
ac9a6ce91a
`sample_entity_xy` walks a polyline's exploded segments and drops the
vertex each segment shares with the previous one. A segment whose curve
plane is upright — any non-horizontal run of a 3D polyline — has no XY
curve, so `entity_curve_xy` declines it and the segment samples to
nothing. With nothing accumulated yet, the seam test compared the two
empty ends as equal and then sliced the empty sample from index 1:
panicked at src/modules/draw/modify/trim.rs:3982:42:
range start index 1 out of range for slice of length 0
On the web build that panic unwinds through winit's event-loop runner
and leaves its state borrowed, which is the "RefCell already borrowed"
follow-on in the same report.
Skip an empty sample instead, which leaves the seam handling to the
segments that do have a plan-view shape.
Fixes HakanSeven12/OpenCADStudio#1318
Co-Authored-By: Claude Opus 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01TQzYZsXBwPZ5HwBaGitEUV