[XeTeX] Problems with xcolor and fontspec

[Stephen Moye]

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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