ppmforge
Generate fractals resembling clouds, planets, and starry skies. tldr-pages
On several platforms
Several platforms
Generate an image of a planet
ppmforge >path/to/image.ppmIdentifyGenerate an image of clouds or the night sky
ppmforge -night >path/to/image.ppmIdentifyUse a custom mesh size and dimension for fractal generation and specify the dimensions of the output
ppmforge -mesh 512 -dimension 2.5 -xsize 1000 -ysize 1000 >path/to/image.ppmIdentifyControl the tilt and the angle from which the generated planet is illuminated
ppmforge -tilt -15 -hour 12 >path/to/image.ppmIdentify