Procedural Zelij: Computational Jacquard Knitting

Tubular Jacquard Generation | Algorithmic Design | Digital Fabrication

This project implements a computational pipeline for generating complex Moroccan Zelij patterns and translating them into machine-knittable instructions (Knitout). It addresses the challenge of mapping rigorous geometric tilework onto the constrained grid of a weft-knitted structure while maintaining structural integrity and pattern definition.

Technical Overview

The core of this project is a procedural generation engine that:

1. Pattern Synthesis: Algorithmically generates families of Zelij patterns based on traditional geometric rules.
2. Tubular Jacquard Mapping: Converts 2D pixel data into a double-bed tubular structure, managing float lengths and color separation automatically.
3. Knitout Generation: Outputs low-level .knitout code compatible with industrial flat-bed knitting machines (e.g., Shima Seiki), providing direct control over racking, yarn carriers, and needle selection.

Key Features

• Algorithmic Design: Parametric generation of tile patterns.
• Fabrication-Aware: Automated handling of knitting constraints (floats, stitch density).
• Direct Control: Bypasses proprietary design software by generating machine code directly.

Usage

running the generation script (requires Node.js):

node chamomile.js <input_pattern.png>

The output is a .k file ready for machine processing.

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