dotCooCoo 666084fb81 Blend: find the spine segment for an arc length with a binary search ...

Spine::at_length walked the first subpath's segments from the start
until one ended at or past the arc length, so placing every blend step,
spread key, blend widget and Objects on Path attachment cost one
comparison per earlier segment. It now searches the anchors' arc
lengths, which never decrease, and picks the same segment: the first
whose end is at or past the length, so an exact anchor length and
repeated lengths from zero-length segments keep their segment. The
point and tangent evaluation is unchanged.

Tests compare the search with the old walk on open and closed spines,
one segment, curves, zero-length segments, every anchor, both ends,
out-of-range and non-finite lengths, and check that a 4,096-segment
spine needs at most 13 comparisons.

2026-11-13 06:46:06 -08:00

..

src

Blend: find the spine segment for an arc length with a binary search

2026-11-13 06:46:06 -08:00

tests

Envelopes: a warp grid kept before type's measure is registered is built again

2026-11-12 22:36:02 -08:00

Cargo.toml

Use chrono instead of hand-rolled UTC conversion (#3387)

2026-10-21 19:36:32 -04:00