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116 lines
2.1 KiB
Text
116 lines
2.1 KiB
Text
=pod
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=head1 NAME
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B<shape_table> - generate shape table data from a text description
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=head1 SYNOPSIS
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B<shape_table> [-h] [-a] [-b] < input > output
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=head1 DESCRIPTION
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B<shape_table> reads a text description of a vector graphic from standard
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input and writes Apple II shape table data to standard output (as either
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binary data or BASIC DATA statements).
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=head1 OPTIONS
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=over
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=item -h
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Print the built-in help message and exit.
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=item -a
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Output BASIC DATA statements (also the default behaviour, so this option
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is redundant).
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=item -b
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Output BLOADable binary data.
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=back
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=head1 INPUT FORMAT
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The input consists of a series of lines. Each line is either a command,
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a blank line, or a comment.
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Blank lines are ignored. They must contain no extra whitespace characters,
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and must consist of only the \n character.
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Comments are ignored. They are marked with a B<#> in the first column
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(no leading whitespace), and continue to the end of the line.
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Commands consist of any text containing one of the draw instructions
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listed below. The instruction must be in upper case, and may be preceded
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and/or followed by anything at all (but only one instruction per line
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is read).
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=head2 Instructions
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Each instruction moves one pixel, in either plotting or non-plotting
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mode. The binary output of each command is shown here, prefixed with %.
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=over
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=item NUP
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Move up (non-plotting), %000
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=item NRT
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Move right (non-plotting), %001
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=item NDN
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Move down (non-plotting), %010
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=item NLT
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Move left (non-plotting), %011
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=item UP
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Move up (plotting), %100
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=item RT
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Move right (plotting), %101
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=item DN
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Move down (plotting), %110
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=item LT
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Move left (plotting), %111
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=back
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=head1 SEE ALSO
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=over
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=item Applesoft II BASIC Programming Reference Manual
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Shape tables are documented on page 96 of the author's copy.
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=item dos33fsprogs(1)
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=item a2tools(1)
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=back
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=head1 WEBSITE
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http://www.deater.net/weave/vmwprod/apple/
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=head1 AUTHORS
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B<dos33fstools> written by Vince Weaver <vince _at_ deater.net>.
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This manual page written by B. Watson for the SlackBuilds.org project,
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but it may be used by anyone.
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