Kelsi 869cee70b1 fix(painter): reject NaN endpoints and zero-length lines in paintAlongPath ...

Two bugs:
1. NaN start/end produced NaN distances that the chunk-skip check
   (dist > width + 40) treated as 'always within range', so every
   chunk got painted.
2. Zero-length line caused glm::normalize to return NaN; same
   downstream effect.

Compute lineDir manually after the length check so we never hit
the divide-by-zero path.

2026-05-06 07:41:58 -07:00

17 KiB

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