Two-colour Patterns Gallery

Each pattern is the XOR of a non-empty subset (a chord) of the 16 base masks — the 4 two-colour families (Yin, Yin mutant, Yang, Yang mutant) at their 4 generations (T0 to T3), each generated by its own drawn axes.

144 figures close on the cube at the cell grain (among the 8⁶ combinations of symmetries of the 6 faces, a dressing exists that makes the tint continuous from one face to the next). Two of them — plain light and plain dark — close trivially and are left out of the gallery: 142 patterns remain.

The C8 grain reads the tint triangle by triangle (8 per cell, 1152 in all); the C1 grain reads it cell by cell (144 in all, a single bit per cell). The same chord of axes generates a different figure depending on the grain chosen — closure on the cube, for its part, is checked at the cell grain.

From the verified catalogue of the work on the law of axes, parity and echoes: each family and each generation is a list of drawn lines (nature and offset), reproduced from the source plates.