PIXFADE(1)

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

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.

brlcad(1), pix(5)

BRL-CAD Team

This software is Copyright (c) 1989-2021 by the United States Government as represented by U.S. Army Research Laboratory.

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