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jpayne@68 1 '\" t
jpayne@68 2 .\" Title: gifbg
jpayne@68 3 .\" Author: [see the "Author" section]
jpayne@68 4 .\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
jpayne@68 5 .\" Date: 2 May 2012
jpayne@68 6 .\" Manual: GIFLIB Documentation
jpayne@68 7 .\" Source: GIFLIB
jpayne@68 8 .\" Language: English
jpayne@68 9 .\"
jpayne@68 10 .TH "GIFBG" "1" "2 May 2012" "GIFLIB" "GIFLIB Documentation"
jpayne@68 11 .\" -----------------------------------------------------------------
jpayne@68 12 .\" * Define some portability stuff
jpayne@68 13 .\" -----------------------------------------------------------------
jpayne@68 14 .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
jpayne@68 15 .\" http://bugs.debian.org/507673
jpayne@68 16 .\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
jpayne@68 17 .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
jpayne@68 18 .ie \n(.g .ds Aq \(aq
jpayne@68 19 .el .ds Aq '
jpayne@68 20 .\" -----------------------------------------------------------------
jpayne@68 21 .\" * set default formatting
jpayne@68 22 .\" -----------------------------------------------------------------
jpayne@68 23 .\" disable hyphenation
jpayne@68 24 .nh
jpayne@68 25 .\" disable justification (adjust text to left margin only)
jpayne@68 26 .ad l
jpayne@68 27 .\" -----------------------------------------------------------------
jpayne@68 28 .\" * MAIN CONTENT STARTS HERE *
jpayne@68 29 .\" -----------------------------------------------------------------
jpayne@68 30 .SH "NAME"
jpayne@68 31 gifbg \- generate a test\-pattern GIF
jpayne@68 32 .SH "SYNOPSIS"
jpayne@68 33 .HP \w'\fBgifbg\fR\ 'u
jpayne@68 34 \fBgifbg\fR [\-v] [\-d\ \fIdir\fR] [\-l\ \fIlvls\fR] [\-c\ \fIR\fR\ \fIG\fR\ \fIB\fR] [\-m\ \fImin\fR] [\-o\ \fImax\fR] [\-s\ \fIw\fR\ \fIh\fR] [\-h]
jpayne@68 35 .SH "DESCRIPTION"
jpayne@68 36 .PP
jpayne@68 37 A program to generate a single\-color test pattern GIF with gradually changing intensity in any of the basic 8 directions\&.
jpayne@68 38 .PP
jpayne@68 39 The gifbg program reads no input, and will dump the created GIF file to stdout\&.
jpayne@68 40 .SH "OPTIONS"
jpayne@68 41 .PP
jpayne@68 42 \-v
jpayne@68 43 .RS 4
jpayne@68 44 Verbose mode (show progress)\&. Enables printout of running scan lines\&.
jpayne@68 45 .RE
jpayne@68 46 .PP
jpayne@68 47 \-d dir
jpayne@68 48 .RS 4
jpayne@68 49 Select direction the intensity of the background should increase\&. Direction can be one of the 8 principal directions:
jpayne@68 50 .PP
jpayne@68 51 "T"
jpayne@68 52 .RS 4
jpayne@68 53 for Top
jpayne@68 54 .RE
jpayne@68 55 .PP
jpayne@68 56 "TR"
jpayne@68 57 .RS 4
jpayne@68 58 for Top Right
jpayne@68 59 .RE
jpayne@68 60 .PP
jpayne@68 61 "R"
jpayne@68 62 .RS 4
jpayne@68 63 for Right
jpayne@68 64 .RE
jpayne@68 65 .PP
jpayne@68 66 "BR"
jpayne@68 67 .RS 4
jpayne@68 68 for Bottom Right
jpayne@68 69 .RE
jpayne@68 70 .PP
jpayne@68 71 "B"
jpayne@68 72 .RS 4
jpayne@68 73 for Bottom
jpayne@68 74 .RE
jpayne@68 75 .PP
jpayne@68 76 "BL"
jpayne@68 77 .RS 4
jpayne@68 78 for Bottom Left
jpayne@68 79 .RE
jpayne@68 80 .PP
jpayne@68 81 "L"
jpayne@68 82 .RS 4
jpayne@68 83 for left
jpayne@68 84 .RE
jpayne@68 85 .PP
jpayne@68 86 "TL"
jpayne@68 87 .RS 4
jpayne@68 88 for Top Left
jpayne@68 89 .RE
jpayne@68 90 .sp
jpayne@68 91 The compass directions may be use as synonyms for the above directions, so for example "NE" is equal to "TR"\&.
jpayne@68 92 .sp
jpayne@68 93 Direction is case insensitive\&. The default direction is Top (North)\&.
jpayne@68 94 .RE
jpayne@68 95 .PP
jpayne@68 96 \-l lvls
jpayne@68 97 .RS 4
jpayne@68 98 Numeric, nmber of levels the color will be scaled to\&. Default is 16\&.
jpayne@68 99 .RE
jpayne@68 100 .PP
jpayne@68 101 \-c R G B
jpayne@68 102 .RS 4
jpayne@68 103 What to use as the primary background color to scale\&. This color is scaled between the minimum intensity (min) and maximum intensity (max) from one end of the screen to the other as defined by dir\&. See below (\-m & \-M) for min & max\&. Default is Blue (0, 0, 255)\&.
jpayne@68 104 .RE
jpayne@68 105 .PP
jpayne@68 106 \-m min
jpayne@68 107 .RS 4
jpayne@68 108 Minimum intensity (in percent) to scale color\&. Default 10%
jpayne@68 109 .RE
jpayne@68 110 .PP
jpayne@68 111 [\-M max
jpayne@68 112 .RS 4
jpayne@68 113 Maximum intensity (in percent) to scale color\&. Default 100%
jpayne@68 114 .RE
jpayne@68 115 .PP
jpayne@68 116 \-s W H
jpayne@68 117 .RS 4
jpayne@68 118 Size of image to create\&. Default 640 by 350\&.
jpayne@68 119 .RE
jpayne@68 120 .PP
jpayne@68 121 \-h
jpayne@68 122 .RS 4
jpayne@68 123 Print one line of command line help, similar to Usage above\&.
jpayne@68 124 .RE
jpayne@68 125 .PP
jpayne@68 126 If min == max = 100 (%) and lvls == 2 then boolean mask image of specified size will be created \- all foreground\&.
jpayne@68 127 .SH "AUTHOR"
jpayne@68 128 .PP
jpayne@68 129 Gershon Elber\&.