Generative Iron Grilles and Silk Shawls Rendered by Light-Angle Rules

A developer describes a series of generative pages where a computer creates patterns such as tin-glazed tiles, heraldry, and brick under raking light. The latest work explores two contrasting materials: wrought-iron grilles, which are defined by shadow, and embroidered Manila shawls, which are defined by shine. Scroll motifs are generated by code, and the grille's frieze and bar repeats combine into a full pattern. For the shawl, each petal's brightness is computed from its stitch direction relative to a light angle, with a monochrome mourning preset showing that thread direction alone can distinguish shapes. The author notes that both pages share the same underlying structure: a seeded geometry, a single light angle, and a rule that converts that angle into visible output.