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