genart

Generative Art in Go: httpd server and cli command line

Generate images (patterns) from a simple formula:

color = ( C - C * X * Y ) mod MAX

C is a constante, ``(X, Y)` coordinates and MAX the number of colors.

How to use

cmd line

To get help:

$ bin/genart -help
Usage of bin/genart:
  -colors int
    	number of colors (default 216)
  -constant int
    	constant for formula (c): c-c*x*y (default 10)
  -filename string
    	filename to save image (.png) (default "formulaimg.png")
  -formula string
    	formula to use (default "ccxy")
  -size int
    	size of image (default 1000)

Generating an image:

$ make genart
$ bin/genart -filename output.png -colors 100

http server

To get the same image from above cmd line example:

make runserver

Then, on another terminal (or from browser):

$ curl -v http://127.0.0.1:8090/ccxy/size/1000/constant/10/colors/100/ --output output.png

The image

Another images

formula: ccxy, size:1000, constant:20, colors:200

$ curl -v http://localhost:8090/ccxy/size/1000/constant/20/colors/200/ --output images/ccxy_size:1000_constant:20_colors:200.png
$ bin/genart -formula=ccxy -size=1000 -constant=20 -colors=200 -filename=images/ccxy_size:1000_constant:20_colors:200.png

formula: xcyc, size:1000, constant:2, colors:70

$ curl -v http://localhost:8090/xcyc/size/1000/constant/2/colors/70/ --output images/xcyc_size:1000_constant:2_colors:70.png
$ bin/genart -formula=xcyc -size=1000 -constant=2 -colors=70 -filename=images/xcyc_size:1000_constant:2_colors:70.png

formula: ccxy, size:1000, constant:2, colors:70

$ curl -v http://localhost:8090/ccxy/size/1000/constant/2/colors/70/ --output images/ccxy_size:1000_constant:2_colors:70.png
$ bin/genart -formula=ccxy -size=1000 -constant=2 -colors=70 -filename=images/ccxy_size:1000_constant:2_colors:70.png

Previous works (pt-br)

• Arte generativa com fórmula simples em Go
• Testando o novo mux no GO 1.22
• Gerando imagens em GO com biblioteca padrão
• Lisp (racket scheme) programs to draw digital art