Package for fading along a line

Hello,

  I have implemented a small package that allows to fade an edge so that
the fading is aligned with the edge (without having to provide explicit
angles for fading rotation). An example together with the package itself
is attached.

  I would be interested in sharing this, so my question is: what's the
right way to do it? Shall I just post it on CTAN as a separate package
or maybe there is a repository of user-submitted tikz libraries? Maybe
someone would even want to integrate it into the main distribution?

Best,
  Misha



\documentclass{article}

\usepackage{tikz}
\usepackage{tikztricks}

\usetikzlibrary{positioning}

\begin{document}

\begin{tikzpicture}[every node/.style = draw]
\node (A) {A};
\node [below right = of A] (B) {B};

\draw (B) edge[faded, green, very thick, <-] (A);
\end{tikzpicture}



\end{document}

%% `tizktricks.sty' v 1.0
%%
%% (c) 2009 Mihhail Aizatulin, <avatar@...>
%%
%% Provides the following facilities:
%%
%% - Fading an edge so that the fading is automatically aligned with the edge
%%
%%  Try this:
%%  \begin{tikzpicture}[every node/.style = {circle, draw}]
%%  \node (A) {A};
%%  \node (B) [below left = of A] {B};
%%  \draw (A) edge[faded = basic fading] (B);
%%  \end{tikzpicture}
%%
%% 12.06.2009: initial version

\ProvidesPackage{tikztricks}
\NeedsTeXFormat{LaTeX2e}[1995/06/01]

\RequirePackage{tikz}
\usetikzlibrary{calc,fadings}

\begin{tikzfadingfrompicture}[name = basic fading]
\shade[left color = transparent!0, right color = transparent!100] rectangle (100bp, 100bp);
\end{tikzfadingfrompicture}

\tikzset{
faded/.default = basic fading,
faded/.style = {
   to path = {
      [
            draw = none,
            execute at begin to = {
                  \pgfslopedattimetrue
                  \pgfallowupsidedownattimetrue
                  \pgfsetfading{#1}{
                        \pgftransformlineattime{0}{\pgfpointanchor{X}{center}}{\pgfpointanchor{Y}{center}}
                        % could just do scaling here as well:
                        \pgftransformtriangle{\pgfpointorigin}{\pgfpointscale{0.01}{\pgfpointanchor{Y}{center}}}{\pgfpoint{0}{1pt}}
                        \pgftransformshift{\pgfpoint{50bp}{0}}
                   }
                   \pgftransparencygroup
            },
            execute at end to = {\endpgftransparencygroup}
      ]
      % Make (X) and (Y) the corners of the area to shade
      (\tikztostart) -- coordinate [at start] (X) coordinate [at end] (Y) (\tikztotarget)
      (X) edge[to path = {(X) -- (Y)}] (Y)
   }}
}


\endinput

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