FMandel

A mandelbrot set renderer written in F#.

FMandel outputs images of the Mandelbrot set similar to those seen on Wikipedia. It uses a fixed colour palette and renders the set with smooth "renormalized" shading.

FMandel supports rendering with arbitrary position, rotation and level of detail and supports anti-aliasing using grid-based sub-sampling. FMandel also applies Floyd-Steinberg dithering to remove banding effects on subtle gradients.

Usage

fmandel [OPTIONS...] [filename]

If no filenmae is specified, the image is output to out.png in the current working directory.

A number of options are supported:

|Short | Long | Default | Description |------|------------------|---------|------------ |-x | --camera-x | 0 | Set the camera X position. |-y | --camera-y | 0 | Set the camera Y position. |-f | --frame-height | 1 | Set the height of the frame from the centre to the top or bottom. |-r | --rotation-angle | 0 | Set the camera rotation angle in degrees. The camera rotates anti-clockwise, causing the image to rotate clockwise. |-s | --sample-level | 1 | Set the sample grid density. A value of 2 would take 2x2 (4) samples per pixel. |-i | --max-iterations | 100 | Set the maximum number of Mandelbrot iterations per pixel. A higher value increases detail. |-w | --width | 512 | Set the width of the image in pixels. |-h | --height | 512 | Set the height of the image in pixels. |-d | --escape-radius | 2000 | Set the Mandelbrot escape radius. Points leaving this radius are considered to have "escaped" from the set. | | --help | | Display the help screen.

Examples

fmandel -x -0.7 -f 1.15 -w 800 -h 600 -s 4 -i 1000

fmandel -x -0.65 -y 0.45 -f 0.01 -w 800 -h 600 -s 4 -i 1000

fmandel -x -0.65 -y 0.45 -f 0.00005 -w 800 -h 600 -s 4 -i 10000