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Draw randomly on a canvas. The resulting BMP image is dumped to stdout.

By default, randompaint draws white strokes on a black canvas, but by supplying a list of colors to use instead (see below), you can make it draw red, green or blue, too. The colors are used one after another in the order they were supplied, starting from a random position on the canvas, and with each color the specified amount of strokes is drawn. If the virtual pen reaches a pixel that has already been painted before, it adds its own color values to the pixel's values.

With the -l (small L) command line argument, you can specify the length of each stroke that is drawn. Be surprised about the results you will get with a length of, say, 15 pixels on a rather small canvas (randompaint -l15)!

Download

• randompaint-0.4 (2009-04-27)

Usage

randompaint [-W width] [-H height] [-l length] [-s steps] [COLORS]
randompaint -h

   -W      image width (default: 320)
   -H      image height (default: 240)
   -l      length of strokes (default: 1, max. 32)
   -s      amount of strokes to draw with each color (default: 100000)
   COLORS  a list of colors to use one after another, possible values are
           -r (red), -g (green), -b (blue), -w (white)
           e.g. -bgr, -rg, -brb (default: -w, max. 64 colors)

Example

$ randompaint -W200 -H150 -s50000 -rg | convert - rg.png