intervalarrows.dtx

% \def\EmailAddress{jhlavace@svsu.edu}
% \iffalse meta-comment
% 
% Program intervalarrows  
% Copyright (C) 2007 Jan Hlavacek
%
% The code of this program is a simple modification of code posted 
% by Jake at http://tex.stackexchange.com/questions/11871/
%
% This program may be distributed and/or modified under the
% conditions of the LaTeX Project Public License, either version 1.2
% of this license or (at your option) any later version.
% The latest version of this license is in
%    http://www.latex-project.org/lppl.txt
% and version 1.2 or later is part of all distributions of LaTeX 
% version 1999/12/01 or later.
%
% The Program's files are intervalarrows.dtx, intervalarrows.ins and intervalarrows.sty.
%
% Run latex with the input file intervalarrows.ins to generate the
% intervalarrows.sty 
% package file. Run latex with the input file intervalarrows.dtx to generate the 
% package documentation.
%
% \fi
%
% \CheckSum{38}
%
% \CharacterTable
%  {Upper-case    \A\B\C\D\E\F\G\H\I\J\K\L\M\N\O\P\Q\R\S\T\U\V\W\X\Y\Z
%   Lower-case    \a\b\c\d\e\f\g\h\i\j\k\l\m\n\o\p\q\r\s\t\u\v\w\x\y\z
%   Digits        \0\1\2\3\4\5\6\7\8\9
%   Exclamation   \!     Double quote  \"     Hash (number) \#
%   Dollar        \$     Percent       \%     Ampersand     \&
%   Acute accent  \'     Left paren    \(     Right paren   \)
%   Asterisk      \*     Plus          \+     Comma         \,
%   Minus         \-     Point         \.     Solidus       \/
%   Colon         \:     Semicolon     \;     Less than     \<
%   Equals        \=     Greater than  \>     Question mark \?
%   Commercial at \@     Left bracket  \[     Backslash     \\
%   Right bracket \]     Circumflex    \^     Underscore    \_
%   Grave accent  \`     Left brace    \{     Vertical bar  \|
%   Right brace   \}     Tilde         \~}
%
% \iffalse
%<*driver>
\ProvidesFile{intervalarrows.dtx}
%</driver>
%<package,ls>\NeedsTeXFormat{LaTeX2e}
%<package>\ProvidesPackage{intervalarrows}
%<*package>
        [2015/07/14 v0.1 Defines two tikz arrow tips for drawing intervals]
%</package>
%<*driver>
\documentclass{ltxdoc}
\usepackage{tikz}
\usepackage{intervalarrows}[2015/07/14]
\usepackage{hyperref}
\EnableCrossrefs
\CodelineIndex
\RecordChanges
\begin{document}
\DocInput{intervalarrows.dtx}
\PrintChanges
\PrintIndex
\end{document}
%</driver>
% \fi
%
% \GetFileInfo{intervalarrows.dtx}
%
% \DoNotIndex{\newcommand,\newenvironment}
%
% \changes{0.1}{2015/07/14}{Initial version}
%
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% \title{\bf The \textsf{intervalarrows} Package\thanks{This document
%        describes the version number \fileversion, last
%        revised \filedate.}}
%
% \author{Jan Hlavacek\\ 
% \small Email: \texttt{\EmailAddress}}
% \date{14 July 2015}
% \maketitle
%
% \begin{abstract}
% This package defines two new arrow tips, open for an ``open'' circle and
% closed for a ``closed'' circle. Unlike the original versions, '\*' and 'o',
% these are centered at the end of the line.
%
% The code is taken from the post \url{http://tex.stackexchange.com/questions/11871} by Jake.
% \end{abstract}
%  \thispagestyle{empty}
%  \tableofcontents
%  \section{Example}
%
%  \begin{verbatim}
%  \begin{center}
%  \begin{tikzpicture}
%  \draw[very thin,<->] (-3,0) -- (4,0);
%  \foreach \x in {-2,...,3}{
%  \draw[xshift=\x cm,very thin] (0,2pt) -- (0,-2pt)node[below]{$\x$};}
%  \draw[very thick,open-closed] (-1,0) -- (2,0);
%  \end{tikzpicture}
%  \end{center}
%  \end{verbatim}
%  produces
%  \begin{center}
%  \begin{tikzpicture}
%  \draw[very thin,<->] (-3,0) -- (4,0);
%  \foreach \x in {-2,...,3}{
%  \draw[xshift=\x cm,very thin] (0,2pt) -- (0,-2pt)node[below]{$\x$};}
%  \draw[very thick,open-closed] (-1,0) -- (2,0);
%  \end{tikzpicture}
%  \end{center}
%
% \StopEventually{}
%
% \section{Implementation}
%    \begin{macrocode}
\pgfarrowsdeclare{closed}{closed}
{
  \pgfarrowsleftextend{+-.5\pgflinewidth}
  \pgfutil@tempdima=0.4pt%
  \advance\pgfutil@tempdima by.2\pgflinewidth%
  \pgfarrowsrightextend{4.5\pgfutil@tempdima}
}
{
  \pgfutil@tempdima=0.4pt%
  \advance\pgfutil@tempdima by.2\pgflinewidth%
  \pgfsetdash{}{+0pt}
  \pgfpathcircle{\pgfqpoint{4.5\pgfutil@tempdima}{0bp}}{4.5\pgfutil@tempdima}
  \pgfusepathqfillstroke
}

\pgfarrowsdeclare{open}{open}
{
  \pgfarrowsleftextend{+-.5\pgflinewidth}
  \pgfutil@tempdima=0.4pt%
  \advance\pgfutil@tempdima by.2\pgflinewidth%
  \pgfarrowsrightextend{4.5\pgfutil@tempdima}
}
{
  \pgfutil@tempdima=0.4pt%
  \advance\pgfutil@tempdima by.2\pgflinewidth%
  \pgfsetdash{}{+0pt}
  \pgfpathcircle{\pgfqpoint{4.5\pgfutil@tempdima}{0bp}}{4.5\pgfutil@tempdima}
  \pgfusepathqstroke
}
%    \end{macrocode}
%
% \Finale

\endinput