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- GifBG
- -----
-
- Program to generate Back Ground with optionally gradually changing intensity
- in any of the basic 8 directions, as a GIF file.
-
- Usage:
- ------
-
- Usage: GifBG [-q] [-d Dir] [-l #Lvls] [-c R G B] [-m MinI] [-M MaxI]
- [-s W H] [-h]
-
- GifBG reads no input, and will dump the created GIF file to stdout.
-
-
- Memory required:
- ----------------
-
- Line.
-
-
- Options:
- --------
-
- 1. [-q] : quite mode. Default off on MSDOS, on on unix. Controls printout
- of running scan lines. Use -q- to turn off.
- 2. [-d Dir] : select direction the intensity of the background should increase.
- Direction can be one of the 8 principle 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 synonym for the above directions, so
- for example "NE" is equal to "TR".
- Direction is case insensitive.
- Default direction is Top (North).
- 3. [-l #Lvls] : Number of levels the color is going to be scaled to.
- Default is 16.
- 4. [-c R G B] : The color to use as the primary back ground color to scale.
- This color is scaled between the minimum intensity (MinI) and maximum
- intensity (MaxI) from one end of the screen to the end as defined by Dir.
- see below (-m & -M) for MinI & MaxI. Default is Blue (0, 0, 255).
- 5. [-m MinI] : Minimum intensity (in percent) to scale color. Default 10%
- 6. [-M MaxI] : Maximum intensity (in percent) to scale color. Default 100%
- 7. [-s W H] : Size of image to create. Default 640 by 350.
- 8. [-h] : print one 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 forground. This can be used as a square mask for
- gifcomb utility.