PIXFADE 1 BRL-CAD BRL-CAD
pixfade darken a pix file
`pixfade` -f fraction -p percentage -m max -s squaresize -w width -n height -o out_file.pix infile.pix > outfile.pix

## DESCRIPTION

`pixfade` darkens a color pix file by fading the entire image a fractional amount or by using a pixel value as a maximum level.

The `-f` option specifies a nonnegative fractional multiplier which is used to scale the red, green, and blue values of each pixel. In a similar way, the `-p` option is used to specify the multiplier as a nonnegative percentage. The default is `-f` 0.5 (`-p` 50.0).

An alternative way to darken the image is to specify a ceiling pixel level (0 - 255) with the `-m` option. The pixel plotted is the minimum of the ceiling value and each of the red, green, and blue levels of the pixel. If this option is used, the `-f` and `-p` options are ignored.

The `-w` and `-n` flags specify the input file width and number of scan lines in pixels; they can be set to the same value via `-s`. Default is 512x512.

The `-o` option supplies output file name. If this option is omitted, standard output is used.

## SEE ALSO

brlcad 1, pix 5

## AUTHOR

BRL-CAD Team

## COPYRIGHT

This software is Copyright (c) 1991-2024 by the United States Government as represented by U.S. Army Research Laboratory.

## BUG REPORTS

Reports of bugs or problems should be submitted via electronic mail to devs@brlcad.org