gifbg(1) [debian man page]
gifbg(1) General Commands Manual gifbg(1) NAME
gifbg - A program to generate a single-color test pattern GIF with gradually changing intensity in any of the basic 8 directions. USAGE
gifbg [-q] [-d Dir] [-l #Lvls] [-c R G B] [-m MinI] [-M MaxI] [-s W H] [-h] The gifbg program reads no input, and will dump the created GIF file to stdout. MEMORY REQUIRED
Line. OPTIONS
[-q] Quiet mode. Defaults off on MSDOS, on under UNIX. Controls printout of running scan lines. Use -q- to invert. [-d Dir] Select direction the intensity of the background should increase. Direction can be one of the 8 principal directions: T - for Top "TR" - for Top Right "R" - for Right "BR" - for Bottom Right "B" - for Bottom "BL" - for Bottom Left "L" - for left "TL" - for Top Left The compass directions may be use as synonyms for the above directions, so for example "NE" is equal to "TR". Direction is case insensitive. The default direction is Top (North). [-l #Lvls] Number of levels the color will be scaled to. Default is 16. [-c R G B] What to use as the primary background color to scale. This color is scaled between the minimum intensity (MinI) and maximum inten- sity (MaxI) from one end of the screen to the other as defined by Dir. See below (-m & -M) for MinI & MaxI. Default is Blue (0, 0, 255). [-m MinI] Minimum intensity (in percent) to scale color. Default 10% [-M MaxI] Maximum intensity (in percent) to scale color. Default 100% [-s W H] Size of image to create. Default 640 by 350. [-h] Print one line of command line help, similar to Usage above. NOTES
If MinI == MaxI = 100 (%) and #Lvls == 2 then boolean mask image of specified size will be created - all foreground. This can be used as a square mask for the <a href="gifcomb.html"> AUTHOR
Gershon Elber Man page created by T.Gridel <tgridel@free.fr>, originally written by Eric S. Raymond <esr@thyrsus.com> giflib-tools gifbg(1)
Check Out this Related Man Page
gifcompose(1) General Commands Manual gifcompose(1) NAME
gifcompose - The gifcompose program uses the GIFLIB utility tools to support a minilanguage for describing GIF pasteup sequences. USAGE
gifcompose [-v] <specfile Specification Syntax The gifcompose tool takes a series of text lines and interprets them as commands to do pasteup operations. The commands are: Generators gif <name> Paste in <name>.gif raw <name> <width> <height> Paste in the given raw-format file (no suffix supplied). Raw format is a stream of 8-bit indices into the EGA color map. Accord- ingly, the width and height must be specified, and the source must be exactly width times height bytes long. rgb <name> <width> <height> Paste in the given RGB-format file (no suffix supplied). Raw format is a stream of 24-bit color values. Accordingly, the width and height must be specified, and the source must be exactly 3 times width times height bytes long. rle <name> Paste in the given RLE-format file (no suffix supplied). This converts the Utah Raster Kit format to GIF. text <text> [foreground <index>] [color <r> <g> <b>] Copy 8x8 monospace font, with transparent background and index 1 as foreground. If the text string contains whitespaces, they must be escaped or the string must be quoted (shell conventions). The optional suffix `foreground <n>' sets the foreground color index. The optional suffix `color <r> <g> <b>' sets the RGB color to be used for the foreground index. Each generator operation may be followed by any combination of the following suffixes: Modifiers at <x> <y> Place the image at the given (upper-left-hand-corner) coordinates in the pasted-up result. clip <name> <top-x> <top-y> <bottom-x> <bottom-y> Clip image using the given rectange, paste it onto. xflip Flip the image around the X axis before placing it. yflip Flip the image around the Y axis before placing it. left Rotate the image 90 degrees counterclockwise before placing it. right Rotate the image 90 degrees clockwise before placing it. Target Operations screen size <x-size> <y-size> Set the global screen size of the final image. screen position <x> <y> Set the global screen position of the final image. Comments Comments or comment lines may be preceded with `#' and will be ignored. MEMORY REQUIRED
Proportional to the size of the largest pasted image. OPTIONS
[-v] Emit a report on each composition action to stderr as it happens. BUGS
The suffix sequence `left left' sometimes mysteriously fails to work, probably due to some restriction in <a href="gifflip.html">gifflip No support for resizing or odd-angle rotations yet. The `color' suffix of text is a no-op, because the present version of <a href="gifovly.html">gifovly Error checking is rudimentary. AUTHOR
Eric S. Raymond <esr@snark.thyrsus.com> Man page created by T.Gridel <tgridel@free.fr>, originally written by Eric S. Raymond <esr@thyrsus.com> giflib-tools gifcompose(1)