For trying out layouts with the three Linha Conecta modules. The floor comes from three rules: the block (a group of tiles, each with its own module and rotation), the repetition (the block repeated across the floor, offset and turning) and chance (part of the tiles swapped at random, with a seed: the same seed makes the same floor again).
The colors can be Contrast's or any others: background, band, thin line and grout. And, apart from the rules, a blank floor can be drawn tile by tile.