[pstricks] pstricks and \ColoredOverlappedSurfaces

[William Dieterich]

Thank you for responding to my post.  I added
\PassOptionsToPackage{dvipsnames}{pstricks} as you suggested, but I
still get the error.  Below is a chunk of prosper-tour.tex that gives me
the problem.  I also get the error in the mixed-colors.tex, but only on
the overlapped objects that use LemonChiffon and LightBlue colors - the
other examples of overlapped surfaces run without any errors popping up.
Thank you again for helping me with my naïve questions.

Bill


\PassOptionsToPackage{dvipsnames}{pstricks}

\documentclass[pdf,autumn,slideColor,colorBG]{prosper}

\usepackage[latin1]{inputenc}
\usepackage{pstricks,pst-node,pst-text,pst-3d}
\usepackage{amsmath}
% Definition of new colors
\newrgbcolor{LemonChiffon}{1. 0.98 0.8} \newrgbcolor{LightBlue}{0.68
0.85 0.9}

% > BEGIN OF OVERLAPPED COLORS
% Code below devised by Denis Girou (CNRS/IDRIS - France,
Denis.Girou at idris.fr) \newrgbcolor{LemonChiffon}{1. 0.98 0.8}
\newrgbcolor{LightBlue}{0.68 0.85 0.9} \makeatletter \newdimen\pst at dimz

% Draw two overlapped surfaces, with computation of the mixed color for
% the intersection of the surfaces % #1=first  surface, #2=color of
first  surface, % #3=second surface, #4=color of second surface
\def\ColoredOverlappedSurfaces#1#2#3#4{%
\psset{fillstyle=solid}
% Decode the three components of the first RGB color
\DecodeRGBFirstColor{\csname color@#2\endcsname}% \psset{fillcolor=#2} %
Draw first surface #1 % Decode the three components of the second RGB
color \DecodeRGBSecondColor{\csname color@#4\endcsname}% % Compute the
mixed color \BuildMixedColor % Draw second surface
\psclip{\psset{fillcolor=#4}#3} \psset{fillcolor=MixedColor} % Redraw
overlapped surface in the mixed color #1 \endpsclip}

% Get the three components of the first color
\def\DecodeRGBFirstColor#1{% \pst at expandafter\pst at getnumiii{#1} {} {} {}
{}\@nil \edef\pst at FirstColorR{\pst at tempg}%
\edef\pst at FirstColorG{\pst at temph}%
\edef\pst at FirstColorB{\pst at tempi}%
%\typeout{Color 1=\pst at tempg,\pst at temph,\pst at tempi}% Debug
}

% Get the three components of the second color
\def\DecodeRGBSecondColor#1{% \pst at expandafter\pst at getnumiii{#1} {} {}
{} {}\@nil \edef\pst at SecondColorR{\pst at tempg}%
\edef\pst at SecondColorG{\pst at temph}%
\edef\pst at SecondColorB{\pst at tempi}%
%\typeout{Color 2=\pst at tempg,\pst at temph,\pst at tempi}% Debug
}

% Build the mixed RBG color (by means of each three components)
\def\BuildMixedColor{% % Resulting R component
\pst at dimz=\pst at FirstColorR pt \advance\pst at dimz\pst at SecondColorR pt
\divide\pst at dimz\tw@ \pst at dimtonum{\pst at dimz}{\pst at MixedColorR}%
% Resulting G component
\pst at dimz=\pst at FirstColorG pt \advance\pst at dimz\pst at SecondColorG pt
\divide\pst at dimz\tw@ \pst at dimtonum{\pst at dimz}{\pst at MixedColorG}%
% Resulting B component
\pst at dimz=\pst at FirstColorB pt \advance\pst at dimz\pst at SecondColorB pt
\divide\pst at dimz\tw@ \pst at dimtonum{\pst at dimz}{\pst at MixedColorB}%
% Definition of the mixed color MixedColor \newrgbcolor{MixedColor}{%
\pst at MixedColorR\space \pst at MixedColorG\space \pst at MixedColorB}
%\typeout{Mixed color=\csname color at MixedColor\endcsname}% Debug }
\makeatother % < END OF OVERLAPPED COLORS

\begin{document}

%----------------------------------------------------------------------

%----------------------------------------------------------------------
SLIDE - \overlays{2}{%
  \begin{slide}[Glitter]{Overlaps of colors}
    Intersection of sets. First the yellow one\dots\onlySlide{2}{Then
      the blue one.}%
    \rput(4,-2){%
      \onlySlide{1}{%
 
\psellipse[fillstyle=solid,fillcolor=LemonChiffon](0.3,-0.7)(1.5,1)}%
      \onlySlide{2}{%
        \ColoredOverlappedSurfaces{\pscircle{1}}{LightBlue}%
                         {\psellipse[fillstyle=solid,%
                           fillcolor=LemonChiffon](0.3,-0.7)(1.5,1)}{%
                           LemonChiffon}}}%
    \OnlySlide{2}%
    {\green Remember how to do that with MS PowerPoint?}
  \end{slide}
}
%-----------------------------------------------------------------------
--

\end{document}


-----Original Message-----
From: pstricks-bounces at tug.org [mailto:pstricks-bounces at tug.org] On
Behalf Of Herbert Voss
Sent: Monday, February 21, 2005 11:36 PM
To: pstricks at tug.org
Subject: Re: [pstricks] pstricks and \ColoredOverlappedSurfaces

William Dieterich wrote:
> Hello:
> 
> I recently updated Miktex and all packages including pstricks. Prior
to
> updating I had no problems when I ran the example prosper-tour.tex.
Now
> I get the following error message when I hit the following slide that
> uses \ColoredOverlappedSurfaces:  

\PassOptionsToPackage{dvipsnames}{pstricks}

before you load prosper. If it doesn't help, give a complete
example


Herbert


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