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CKey-Format-v0.21.0.md
v0.1.0-build.85
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| 1 | # CKey Format v0.21.0 — Profile 3 Corrected Field Geometry |
| 2 | |
| 3 | Profile 3 retains its 116-unit field, ten byte-interleaved RS(255,k) blocks, |
| 4 | seven capacity/ECC tiers, deterministic visual fill, 232×232 Cartesian pitch, |
| 5 | and 576 calibrated Gray-length/stroke-weight rays. |
| 6 | |
| 7 | The 34-ring matrix occupies radii `7.00 + ((23.96 - 7.00) / 33)r`, for |
| 8 | `r = 0…33`. This retains the full ring capacity while restoring a 7-unit |
| 9 | measurable centre quiet zone. The Ring Key remains at radius `24.45` and the |
| 10 | Ray Key begins at radius `26.30`. |
| 11 | |
| 12 | Finder clearance is reserved only in each finder's actual outer corner |
| 13 | quadrant. The Cartesian field therefore does not print under finder arcs and |
| 14 | does not create false inward diagonal voids. The 5-unit border moat and the |
| 15 | four `.34` Grid Key modules on the `.5` Cartesian pitch are unchanged. |
| 16 | |
| 17 | Encoders emit frame format byte `0x15` (decimal 21), profile byte `0x03`. |
| 18 | This changes the Profile 3 codeword-to-site mapping and requires the v0.21 |
| 19 | sampling map. |