Xecolor provides none of the facilities that I need, most importantly, access
to the HSB color model. It is in no way a replacement for xcolor, but simply
provides a range of colors made accessible through fontspec's \addfonfeature
command.
Sounded promising on the face of it. Thanks for the suggestion.
Stephen
On Oct 3, 2011, at 10:29 AM, Herbert Schulz wrote:
>
> On Oct 3, 2011, at 8:57 AM, Stephen Moye wrote:
>
>> 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}
>
>
> Howdy,
>
> Don't know if this will help but try using the xecolor package. Note that
> it's commands have a different name than the xcolor package though.
>
> Good Luck,
>
> Herb Schulz
> (herbs at wideopenwest dot com)
>
>
>
>
>
>
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