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

How to use

cmd line

$ bin/genart -helpUsage 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)

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

http server

make runserver

$ 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)