generativeart

generativeart is a Go package to generate many kinds of generative art. The goal is to collect some excellent generative art (implemented in R or Processing), and rewrite them in Go again. I would paste the original link at the end of this README(If I remember, you can also submit a PR if you found I missed something.). Currently, it supports the following type.

This package is still working in progress. More types would be added. Welcome anyone interested in this field to submit your PR.

• Maze
• Julia Set
• Random Circle Trails
• Silk Smoke
• Spiral Square
• Square Grid
• Circle Line
• Circle Loop
• Silk Sky
• Dot Line
• Swirl
• Point Ribbon
• Janus
• Random Shapes
• Color Circle
• Color Circle2
• Circle Grid
• Contour Line

For these kinds of art, the package provides as many parameters to control the appearance.

Install

The go version I used is Go 1.16.

go get github.com/jdxyw/generativeart

Art Type

NewCircleLine(step float64, lineNum int, radius, xaixs, yaixs float64)
NewCircleLoop(radius float64)
NewMaze(step int)
NewRandCicle(mc, msp int, minStep, maxStep, minr, maxr float64, isRandColor bool)
NewSilkSky(circleNum int, sunRadius float64)
NewSilkSmoke(mc, msp int, minStep, maxStep, minRadius, maxRadius float64, isRandColor bool)
NewSpiralSquare(squareNum int, rectSide, decay float64, randColor bool)
NewSwirl(a, b, c, d, xaixs, yaixs float64)
NewDotLine(n int, ras, canv float64, randColor bool)
NewPointRibbon(r float64)
NewJanus(n int, decay float64)
NewRandomShape(shapeNum int)
NewColorCircle(circleNum int)
NewColorCircle2(circleNum int)
NewCircleGrid(circleNumMin, circleNumMax int)
NewContourLine(lineNum int)

Docs

You could find the docs in the doc.

Examples

You could find examples for all types under example.

General Options

type Options struct {
	background  color.RGBA
	foreground  color.RGBA
	lineColor   color.RGBA
	lineWidth   float64
	colorSchema []color.RGBA
	nIters      int
	alpha       int
}

The Options is a global option for the whole canva. It includes those general parameters used by different kinds of types, such as background, lineColor, and colorScheme.

For those parameters specified for different kinds of art types, they have their own struct.

Usage and example

Junas

func main() {
	rand.Seed(time.Now().Unix())
	c := generativeart.NewCanva(500, 500)
	c.SetBackground(generativeart.Black)
	c.FillBackground()
	c.SetColorSchema(generativeart.DarkRed)
	c.SetForeground(generativeart.LightPink)
	c.Draw(generativeart.NewJanus(10, 0.2))
	c.ToPNG("janus.png")
}

Random Shapes

func main() {
	rand.Seed(time.Now().Unix())
	c := generativeart.NewCanva(500, 500)
	c.SetBackground(generativeart.White)
	c.FillBackground()
	c.SetColorSchema([]color.RGBA{
		{0xCF, 0x2B, 0x34, 0xFF},
		{0xF0, 0x8F, 0x46, 0xFF},
		{0xF0, 0xC1, 0x29, 0xFF},
		{0x19, 0x6E, 0x94, 0xFF},
		{0x35, 0x3A, 0x57, 0xFF},
	})
	c.Draw(generativeart.NewRandomShape(150))
	c.ToPNG("randomshape.png")
}

Color Circle2

func main() {
	rand.Seed(time.Now().Unix())
	colors := []color.RGBA{
		{0x11, 0x60, 0xC6, 0xFF},
		{0xFD, 0xD9, 0x00, 0xFF},
		{0xF5, 0xB4, 0xF8, 0xFF},
		{0xEF, 0x13, 0x55, 0xFF},
		{0xF4, 0x9F, 0x0A, 0xFF},
	}
	c := generativeart.NewCanva(800, 800)
	c.SetBackground(generativeart.White)
	c.FillBackground()
	c.SetColorSchema(colors)
	c.Draw(generativeart.NewColorCircle2(30))
	c.ToPNG("colorcircle2.png")
}

Circle Grid

func main() {
	rand.Seed(time.Now().Unix())
	colors := []color.RGBA{
		{0xED, 0x34, 0x41, 0xFF},
		{0xFF, 0xD6, 0x30, 0xFF},
		{0x32, 0x9F, 0xE3, 0xFF},
		{0x15, 0x42, 0x96, 0xFF},
		{0x00, 0x00, 0x00, 0xFF},
		{0xFF, 0xFF, 0xFF, 0xFF},
	}
	c := generativeart.NewCanva(500, 500)
	c.SetBackground(color.RGBA{0xDF, 0xEB, 0xF5, 0xFF})
	c.FillBackground()
	c.SetColorSchema(colors)
	c.SetLineWidth(2.0)
	c.Draw(generativeart.NewCircleGrid(4, 6))
	c.ToPNG("circlegrid.png")
}

Silk Smoke

func main() {
	rand.Seed(time.Now().Unix())
	c := generativeart.NewCanva(500, 500)
	c.SetBackground(generativeart.Black)
	c.SetLineWidth(1.0)
	c.SetLineColor(generativeart.MediumAquamarine)
	c.SetAlpha(30)
	c.SetColorSchema(generativeart.Plasma)
	c.SetIterations(4)
	c.FillBackground()
	c.Draw(generativeart.NewSilkSmoke(400, 20, 0.2, 2, 10, 30, false))
	c.ToPNG("silksmoke.png")
}

Contour Line

func main() {
	rand.Seed(time.Now().Unix())
	colors := []color.RGBA{
		{0x58, 0x18, 0x45, 0xFF},
		{0x90, 0x0C, 0x3F, 0xFF},
		{0xC7, 0x00, 0x39, 0xFF},
		{0xFF, 0x57, 0x33, 0xFF},
		{0xFF, 0xC3, 0x0F, 0xFF},
	}
	c := generativeart.NewCanva(1600, 1600)
	c.SetBackground(color.RGBA{0x1a, 0x06, 0x33, 0xFF})
	c.FillBackground()
	c.SetColorSchema(colors)
	c.Draw(generativeart.NewContourLine(500))
	c.ToPNG("contourline.png")
}

Circle Loop

func main() {
	rand.Seed(time.Now().Unix())
	c := generativeart.NewCanva(500, 500)
	c.SetBackground(generativeart.Black)
	c.SetLineWidth(1)
	c.SetLineColor(generativeart.Orange)
	c.SetAlpha(30)
	c.SetIterations(1000)
	c.FillBackground()
	c.Draw(generativeart.NewCircleLoop(100))
	c.ToPNG("circleloop.png")
}

Dot Line

func main() {
	rand.Seed(time.Now().Unix())
	c := generativeart.NewCanva(2080, 2080)
	c.SetBackground(color.RGBA{230, 230, 230, 255})
	c.SetLineWidth(10)
	c.SetIterations(4000)
	c.SetColorSchema(generativeart.Plasma)
	c.FillBackground()
	c.Draw(generativeart.NewDotLine(100, 20, 50, false))
	c.ToPNG("dotline.png")
}

Julia Set

func julia1(z complex128) complex128 {
	c := complex(-0.1, 0.651)
	z = z*z + c

	return z
}

func main() {
	rand.Seed(time.Now().Unix())
	c := generativeart.NewCanva(500, 500)
	c.SetIterations(800)
	c.SetColorSchema(generativeart.Viridis)
	c.FillBackground()
	c.Draw(generativeart.NewJulia(julia1, 40, 1.5, 1.5))
	c.ToPNG("julia.png")
}

Silk Sky

func main() {
	rand.Seed(time.Now().Unix())
	c := generativeart.NewCanva(600, 600)
	c.SetAlpha(10)
	c.Draw(generativeart.NewSilkSky(15, 5))
	c.ToPNG("silksky.png")
}

Maze

func main() {
	rand.Seed(time.Now().Unix())
	c := generativeart.NewCanva(600, 600)
	c.SetBackground(generativeart.Azure)
	c.SetLineWidth(3)
	c.SetLineColor(generativeart.Orange)
	c.FillBackground()
	c.Draw(generativeart.NewMaze(20))
	c.ToPNG("maze.png")
}

Random Circle

func main() {
	rand.Seed(time.Now().Unix())
	c := generativeart.NewCanva(500, 500)
	c.SetBackground(generativeart.MistyRose)
	c.SetLineWidth(1.0)
	c.SetLineColor(color.RGBA{
		R: 122,
		G: 122,
		B: 122,
		A: 30,
	})
	c.SetColorSchema(generativeart.Plasma)
	c.SetIterations(4)
	c.FillBackground()
	c.Draw(generativeart.NewRandCicle(30, 80, 0.2, 2, 10, 30, true))
	c.ToPNG("randcircle.png")
}

TODO

• Add more kinds of generative arts or types.

Contribution

Thanks for the following sites and repos, I got lots of ideas, inspiration, code and tricks from them. The list would be very long, sorry for forgetting some of them.

• https://inconvergent.net/
• https://fronkonstin.com/
• https://github.com/aschinchon/cyclic-cellular-automata
• https://github.com/armdz/ProcessingSketchs
• https://github.com/Mr-Slesser/Generative-Art-And-Fractals
• https://github.com/cdr6934/Generative-Processing-Experiments
• https://github.com/pkd2512/inktober2017
• http://blog.dragonlab.de/2015/03/generative-art-week-1
• https://editor.p5js.org/kenekk1/sketches/Ly-5XYvKX
• http://paulbourke.net/fractals/peterdejong/
• https://editor.p5js.org/kenekk1/sketches/O44Dln5oo
• https://openprocessing.org/sketch/1071233
• https://twitter.com/okazz_
• https://openprocessing.org/sketch/738638