regen-bristles

name	regen-bristles
description	Regenerate src/Bristles.inl from res/Duster_bristles.svg after editing the bristle source SVG. Use whenever a bristle's position, colour, width, or count changes in the SVG — the .inl is generated, never hand-edit it.

Run from the repo root:

python3 tools/gen_bristle_data.py

The script:

• Parses res/Duster_bristles.svg (which holds three <g id="bristles-*"> groups: back, main, highlight).
• For each <line>, treats the larger-y endpoint as the anchor (handle side) and the smaller-y endpoint as the rest tip.
• Reads the parent <g>'s stroke, stroke-width, and opacity for colour and line thickness.
• Emits src/Bristles.inl with a kBristles[] array of BristleDef records and a kNumBristles constant.

After regenerating, rebuild so the new data is compiled in. The generated .inl is committed to the repo (so builds don't require Python at build-time), so include both res/Duster_bristles.svg and src/Bristles.inl in any commit that changes bristle data.

Stdlib only — no external Python deps.