Generator for grammar 002: grid compositions with exact multiply overprint#1
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…ly overprint - generator/grid.py: five sheet-driven primitives on the module grid, seeded free composition (audit 002 §3 dialect space), 4-6 ink subsets from the master set - overprint composited by integer multiply (a*b+127)//255 in flat layers, no anti-aliasing, so every output colour is provably white, an ink, or a pairwise product — the audit's self-verifying arithmetic, byte-checkable - overprint depth capped at 2 (SI-019); composition/density model recorded as dialect freedom (SI-018) - GroundTruth records primitives, inks, overlaps and the primitive counts that will become the primitive_frequency_mix measurement - 15 measurement-based tests; 88 total green
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What
Milestone 2, Phase 5 — the 2D grid generator for the ISO family grammar (
grammars/iso-002.yaml), consuming the sheet for grid, primitives, master inks and layering rule.(a·b+127)//255with no anti-aliasing, so every pixel in the output is provably white, a lone ink, or a pairwise product. The audit verified this arithmetic to the integer on the real identity; the generator preserves it as a whole-image invariant that tests assert directly.GroundTruthrecords primitives, cells, inks, overlap pairs and per-type counts (the futureprimitive_frequency_mixmeasurement, SI-008).Tests
15 new measurement-based tests (grid autocorrelation at M, stripe run-lengths, exact multiply on every recorded overlap, whole-image colour invariant, determinism). Full suite: 88 passed.
Sample render (12×8 cells, module 72, seed 0): all five primitives, six-ink subset, 16 overlap pairs, multiply products visible where inks cross.