forked from 1b-agent/opencadstudio-upstream
Hakan SevenandClaude Opus 4.8
0cd861cc76
Prebaked hatch fills anchored each pattern family at its authored
base point minus world_origin. On UTM-scale drawings that offset is
~1e6, which broke the fill two ways:
- the shader consumes x0/y0 as f32, so ~0.5 m quantization shredded
the pattern phase; and
- it evaluated the pattern that far from its origin, where the
multi-family aggregate patterns (AR-CONC, AR-SAND, GRAVEL, ...) —
effectively quasi-periodic — dissolve from their interlocking
stones into scattered dashes.
Boundaries were unaffected throughout; they ride the double-single
relative-to-eye path.
Fold the origin's offset from world_origin down to a small,
coherence-safe remainder on a `spacing * 64` grid, applied as one
common fold so every family keeps the relative phase that forms the
stones. Because the origin grip / Origin X/Y edit shifts every base
point by the same delta, the sub-grid remainder tracks it 1:1, so the
grip still moves the fill; a grid crossing needs a full `spacing * 64`
drag and is never hit by realistic alignment drags.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>