ppmshadow
Add drop shadow effect to images
TLDR
Add drop shadow
$ ppmshadow [input.ppm] > [output.ppm]
Specify blur radius$ ppmshadow -b [8] [input.ppm] > [output.ppm]
Specify shadow offset$ ppmshadow -x [5] -y [5] [input.ppm] > [output.ppm]
SYNOPSIS
ppmshadow [options] [file]
DESCRIPTION
ppmshadow adds a drop shadow effect to a PPM image, creating the appearance of the image floating above a background. The shadow is created by blurring a darkened copy of the image and placing it offset behind the original.
The blur radius controls shadow softness, while x and y offsets control the apparent light direction. The -t option creates a translucent shadow that allows the background to show through. Part of the Netpbm toolkit.
PARAMETERS
FILE
Input PPM file.-b N
Blur radius.-x N
X offset.-y N
Y offset.-t
Translucent shadow.
CAVEATS
Requires transparent background. Part of Netpbm suite.
HISTORY
ppmshadow was created as part of Netpbm for shadow effect generation.