NetterSilverandClaude Opus 5.5 19d4adb39c Make SVG export def ids linear instead of quadratic ...

Writer::fresh_id probed prefix-1, prefix-2, ... from 1 on every call,
formatting and hashing each candidate, so writing N gradients, clip
paths or masks cost O(N^2). Ids are never released, so every number
below the last one handed out for a prefix is taken: remember where
the search for each prefix stopped and resume there. The ids written
are the same as before.

examples/still-life.vectorcraft (12k gradients, 6.3 MB SVG) exported
in about 8.6 s (median); it now takes about 0.15 s. Output is byte-identical
for every document in examples/.

Add crates/engine/examples/export_bench.rs to time document.export
on the example documents, and a test pinning the generated id
sequence when object names already take some of the numbers.

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

2026-10-27 11:52:22 +01:00

..

export_bench.rs

Make SVG export def ids linear instead of quadratic

2026-10-27 11:52:22 +01:00