🧧 gënérative ȧrt made by pragmatic kotlin micro-framework.
❤️ Instagram / Online Gallery
⭐️ Gȧrt is a pragmatical framework and set of utilities for generating and rendering still images and movies.
- uses Skiko (by JetBrains) for Skia binding.
box-2dfor physics simulation.ffmpegfor video encoding.
🤷♂️ Honestly, I put the framework together for my own needs, so it’s a bit rough around the edges and the naming isn’t great. It’s not how I normally write code.
♻️ Continuous build for Hot Reload:
just hotReloadThere is really a lot of features, and I’m not sure how to organize them, but here’s an attempt at categorization:
Core Framework
- Gart — Factory/entry point (Gart.of("name", w, h))
- Gartvas — Canvas wrapper (Skia Surface)
- Window / WindowView — Swing display with keyboard/mouse handlers
- Movie — MP4/GIF video recording (FFmpeg + GifSequenceWriter)
- Frames — Frame timing, FPS control
- GartRand — Deterministic random with replay
- Sprite — Image with chainable transforms (rotate, translate, scale, flip)
Color
- Color spaces: RGBA, HSL, HSV, HSI, LAB, LCH, OKLAB, OKLCH, CMYK
- Palettes: 76 cool + 15 mix + 133 colormaps (Carto, CET, ColorBrewer, Matplotlib, Plotly, Tableau, etc.)
- Named colors: CssColors, NipponColors, RetroColors, MidCenturyColors
- Functions: blendColors, lerpColor, colorDistance, toFillPaint, toStrokePaint
Geometry & Graphics
- Primitives: Point, Line, DLine, Circle, Triangle, Poly4, Rect, GridRect, RectIsometric
- Collections: Points, PointsTrail
- Drawing: drawCircle, drawLine, drawPoly4, drawTriangle, drawRotatedRect, fatLine, n-gon, arc, ring, spiral, wave, grid, border, moon, tree, human
- Paint helpers: strokeOf, fillOf, hatchPaint, dashPaint
Math & Vectors
- Vectors: Vector2/3/4, Matrix2, dot/cross product
- Complex numbers: Complex, ComplexField, ComplexPolynomial, transcendental functions
- Curves: Lissajous, GaussianFunction
- Utilities: clamp, map, lerp, smoothstep, frac, mod, distance, primes, fastSqrt
- Angles: Radians, Degrees with trig functions
Noise & Sampling
- Noise: Perlin, multi-octave PerlinNoise, cell noise, FBM
- Sampling: Halton sequence, Poisson disk sampling
- NoiseColor — Noise-driven color generation
Curve Smoothing
- B-spline, Cardinal spline, Catmull-Rom spline, Chaikin, quadratic smoothing
Physics & Simulation
- Attractors (19): Lorenz, Clifford, Rössler, Duffing, Thomas, Chen, Sprott, etc.
- N-body: BarnesHut simulation, QuadTree, GravityParticles (10^6+)
- Orbital mechanics (WHFast): Wisdom-Holman integrator, Kepler solver, orbital elements
- Fluid dynamics: Navier-Stokes solver, Lattice Boltzmann, FluidSolver with particle rendering
- Cellular automata: Elementary rules, Belousov-Zhabotinsky reaction
- Force fields: ForceField, Flow, ForceGenerator
- Particles: Particle system, Gravitron
Spatial & Triangulation
- Delaunay triangulation (Mapbox Delaunator port)
- Voronoi diagrams
- HashGrid — Spatial hash for fast neighbor queries
- Circle packing — CirclePacker
- Jump Flooding Algorithm — Distance fields
Pixel Processing
- Filters: Gaussian blur, motion blur, grayscale, liquify, moiré, pixel sorting, flood fill, scaling
- Dithering (12): Floyd-Steinberg, Bayer (2x2–8x8), Atkinson, Burkes, Jarvis-Judice-Ninke, Sierra, Stucki
- Halftone: CMYK separation, configurable screening
Shaders & Effects
- Shaders: neuro, marbled texture, noise grain, risograph, sketching paper
- FX: blur, borderize, pixelate, scale
- Glass/refraction: glassBall, glassPath
- Ray tracing: ray, trace, mirror
- 3D perspective: block3d (two-point perspective)
Generators
- Spirograph, harmonograph, midpoint displacement (terrain)
Utilities
- Hot reload (file watcher + dynamic class loader)
- Font loading, text rendering
- Image conversion, resource loading
- Array/list/loop/range/sequence helpers
Example folder contains several small projects demonstrating various features of the framework.
Example*- demonstrations of various features, usually interactive.Template- minimal project template to start with.TemplateHotReload- same as above, but with hot-reload enabled.- Tools:
GradientGenerator- interactive gradient palette generator.FunGraph- interactive function plotter.
A collection of generative art pieces (ordered by name).
Total: 187 works across 47 collections
