3 people 393abf8075 M8: Grid auto-placement on an occupancy bitmap (#1593) ...

* M8: grid auto-placement on an occupancy bitmap (#1083)

Grid placement tested every cell of a child's span at every position it tried. The taken cells are now a bitmap: spans are checked a 64-bit word at a time, the search jumps past the blocking cell, a row's search ORs the span's rows once, and a column-anchored child looks on from where the last one with the same column and spans found room. Placements are unchanged (checked against the old search on random grids); a crafted 1000 x 1000 grid takes 0.3 ms instead of 192 ms.

* M8: grid occupancy stores rows only once a cell in them is taken

An empty or sparse grid no longer allocates the whole bitmap up front (CodeRabbit on #1593).

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

---------

Co-authored-by: Brandon Thomas <echelon@gmail.com>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

2026-10-30 08:56:43 +07:00

..

src

M8: Grid auto-placement on an occupancy bitmap (#1593)

2026-10-30 08:56:43 +07:00

Cargo.toml

M0.5: layout (auto layout + constraints), format, svg, engine (commands, history, tools, components, styles, variables)

2026-10-09 12:40:18 -04:00