DragonFly On-Line Manual Pages

Search: Section:  

GIFCLIP(1)                   GIFLIB Documentation                   GIFCLIP(1)


NAME

       gifclip - clip a region from a GIF


SYNOPSIS

       gifclip [-v] [-i xmin ymin xmax ymax] [-n n xmin ymin xmax ymax] [-c]
               [-h] [gif-file]


DESCRIPTION

       A program to clip images in GIF files. Only one image in a GIF file can
       be modified at a time. Neither the image position on screen nor the
       screen size is modified (use gifpos[1] for that).


OPTIONS

       -v
           Verbose mode. Enables printout of running scan lines.

       -i xmin ymin xmax max
           Clip first image to the dimensions as specified by the 4
           coordinates (Xmin Ymin Xmax Ymax) of a box clipping region.

           For example: '-i 11 22 33 44' will crop the box from top left
           [11,22] to bottom right [33,44] out of the first image.

           If the first parameter is bigger than third one (Xmin > Xmax) they
           are swapped. Same for Y.

           The dimensions of the clipped image must be confined to original
           image width and height. Note the clipped image includes both the
           min & max boundary; an image of width W can have coordinates 0 to
           W-1 (zero based).

           Only one of -i or -n can be specified.

       -n n xmin ymin xmax ymax
           Same as -i above but for the nth image: `-n 1 11 22 33 44' is
           exactly the same as the example in -i. Only one of -i or -n can be
           specified.

       -c
           Complement. This removes horizontal and/or vertical bands of the
           image. For example `-c -i 638 3 658 13' would remove a horizontal
           band 11 pixels deep beginning at raster line 3, and a vertical band
           21 pixels right beginning at pixel 658.

       -h
           Print one line of command line help, similar to Usage above.

       Note: all coordinates are 0-based --- the top left corner is (0, 0).

       If no GIF file is given, gifclip will try to read a GIF file from
       stdin.


AUTHOR

       Gershon Elber.


NOTES

        1. gifpos
           [set $man.base.url.for.relative.links]/gifpos.html

GIFLIB                            2 May 2012                        GIFCLIP(1)

Search: Section: