The following minimum example shows the problem: I would like to generate some
text in random colors and specify the opacity. In the example file below,
either I get black text with opacity of 50%, or random colors at 100% opacity,
or one random color for all the text at 50% opacity. Can I have my cake and eat
it too? That is, can I have random colors *and* control over the opacity?
I'm using MacTeX 2011.
Thanks for any insights.
Stephen Moye
%%=====8><-----%%
% !TEX TS-program = XeLaTeX-xdv2pdf
\documentclass{article}
\input random
\usepackage{xcolor}
\usepackage{fontspec}
\setmainfont{Helvetica}
\newlength{\huedim}
\newcommand{\randcolor}{%
\setrandim\huedim{0.0pt}{1.0pt}%
\definecolor{mycolor}{hsb}{\pointless\huedim,1.0,1.0}%
\color{mycolor}
}
\newcommand{\testit}[3]{%
%%% Uncomment *one* of the following \put commands to see the
difference:
%
%%% This returns only gray:
%\put(#1,#2){\randcolor\addfontfeature{Opacity=0.5}\color{mycolor}#3}
%
%%% This returns only the color first defined:
%\put(#1,#2){\randcolor\addfontfeature{Color=mycolor,Opacity=0.5}\color{mycolor}#3}
%
%%% This works as it should, but the opacity is 100%
%\put(#1,#2){\randcolor\color{mycolor}#3}
}
\begin{document}
\begin{picture}(100,100)
\testit{20}{100}{X}
\testit{30}{90}{y}
\testit{40}{80}{z}
\end{picture}
\end{document}
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