Generative line art with a live-adjustable GUI, built as a single Processing sketch. Designed for pen plotters: everything exports as clean, millimetre-accurate SVG.
- 17 patterns — flow field, wave lines, spirograph, noise rings, Lissajous, contour map, Truchet tiles, hatch shading, strange attractor, superformula, nested polygons, spiral, moire circles, circle packing, harmonograph, Hilbert curve, sunburst.
- Up to 4 pen layers — each with its own pattern, seed, parameters, pen colour, pen width, and scale/rotate/offset transform. Combine patterns, or plot each layer with a different pen.
- Live preview — drag sliders, pick paper size (A5/A4/A3/Square, portrait or landscape), and see the result update immediately.
- SVG export — real paper size in millimetres, one Inkscape layer per pen (or one file per pen), with optional pen-travel optimisation to reduce plotting time.
- Presets — save and load the full setup (paper, margin, all 4 layers) as JSON. A handful of example presets are included in
GenerativeLineArt/presets.
Open GenerativeLineArt/GenerativeLineArt.pde in the Processing IDE (4.x) and press Run. No extra libraries are required.
- Sliders / dials in the left panel adjust the current layer's parameters live. Mouse wheel over a slider = fine adjustment.
- Layer tabs (1–4) switch which pen layer you're editing.
- Pattern dropdown picks the pattern for the current layer; Left/Right arrow keys cycle through patterns.
- New seed / Randomize / Reset buttons (or
N/Space,R) regenerate the current layer. - Export SVG... (or
S) opens a save dialog; a quick-save also writes intoGenerativeLineArt/exports/. - Save preset... / Load preset... (or
P,L) store/restore the whole setup as JSON inGenerativeLineArt/presets/.
Exported SVGs use millimetre units matching the chosen paper size, with each pen layer as a separate <g> (Inkscape layer) so multi-pen plots can be sent one layer at a time to software like Inkscape + the AxiDraw extension, vpype, or similar plotter tools.
CC0 1.0 Universal — see LICENSE.