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%% $Id: pst-hsb.tex 350 2021-12-16 10:20:18Z herbert $
%%
%% This is file `pst-hsb.tex',
%%
%% IMPORTANT NOTICE:
%%
%% Package `pst-hsb.tex'
%%
%% Denis Girout
%% Manuel Luque
%% Herbert Voss <hvoss@tug.org>
%%
%% This program can be redistributed and/or modified under the terms
%% of the LaTeX Project Public License Distributed from CTAN archives
%% in directory macros/latex/base/lppl.txt.
%%
%% DESCRIPTION:
%% `pst-hsb' is a PSTricks package for continous color
%%
%%
\csname PSThsbLoaded\endcsname
\let\PSThsbLoaded\endinput
\ifx\PSTricksLoaded\endinput\else\input pstricks.tex\fi
\ifx\PSTplotLoaded\endinput\else \input pst-plot \fi
\ifx\PSTXKeyLoaded\endinput\else \input pst-xkey.tex \fi
%
\edef\PstAtCode{\the\catcode`\@} \catcode`\@=11\relax
% interface to the `xkeyval' package
\pst@addfams{pst-hsb}
%
\def\fileversion{0.02}
\def\filedate{2021/12/16}
\message{`PST-hsb' v\fileversion, \filedate\space (hv)}
%
\define@key[psset]{pst-hsb}{HueBegin}{\def\psparametricplotHSB@HueBegin{#1}}% Between 0 and 1
\define@key[psset]{pst-hsb}{HueEnd}{\def\psparametricplotHSB@HueEnd{#1}}% Between 0 and 1
\define@boolkey[psset]{pst-hsb}[Pst@]{HSB}[true]{}
% Default values
\psset[pst-hsb]{HueBegin=0,HueEnd=1,HSB=true}
\psset{dimen=outer}
\def\psparametricplotHSB{\pst@object{psparametricplotHSB}}
\def\psparametricplotHSB@i#1#2#3{{%
\begin@ClosedObj
\addto@pscode{%
/t #1 def
/dt #2 t sub \psk@plotpoints\space div def
/t t dt sub def
/F@pstplot
\ifPst@algebraic (#3)
\ifx\psk@PlotDerivative\@none\else
\psk@PlotDerivative\space { (t) tx@Derive begin Derive end } repeat
\fi
tx@AlgToPs begin AlgToPs end cvx
\else
{ #3 }
\fi
def
/Counter 0 def
1 setlinejoin
\psk@plotpoints {
/t t dt add def
/Counter Counter 1 add def
t F@pstplot
\pst@number\psyunit mul exch
\pst@number\psxunit mul exch
1 Counter eq { moveto currentpoint /OldY ED /OldX ED } % First point
{\ifPst@HSB % Other points than the first one
/PointY exch def
/PointX exch def
Counter \psk@plotpoints\space div
\psparametricplotHSB@HueEnd\space
\psparametricplotHSB@HueBegin\space sub mul
\psparametricplotHSB@HueBegin\space add
1 1 sethsbcolor
OldX OldY PointX PointY lineto lineto
stroke
PointX PointY moveto
/OldX PointX def /OldY PointY def
\else lineto \fi } ifelse
} repeat }% fin du code ps
\end@ClosedObj
}\ignorespaces}
%
\def\pslineHSB{\pst@object{pslineHSB}}
\def\pslineHSB@i(#1)(#2){{%
\begin@OpenObj
\pst@getcoor{#1}\pst@tempA
\pst@getcoor{#2}\pst@tempB
\addto@pscode{%
\pst@tempA
/y0 ED /x0 ED
\pst@tempB
/y1 ED /x1 ED
/dx x1 x0 sub \psk@plotpoints\space div def
/m y1 y0 sub x1 x0 sub div def
/t x0 dx sub def
/Counter 0 def
gsave
x0 y0 translate
\psk@plotpoints {
/t t dx add def
/Counter Counter 1 add def
t dup m mul
1 Counter eq
{ moveto currentpoint /OldY ED /OldX ED } % First point
{\ifPst@HSB % Other points than the first one
/PointY exch def
/PointX exch def
Counter \psk@plotpoints\space div
\psparametricplotHSB@HueEnd\space
\psparametricplotHSB@HueBegin\space sub mul
\psparametricplotHSB@HueBegin\space add
1 1 sethsbcolor
OldX OldY PointX PointY lineto lineto
stroke
PointX PointY moveto
/OldX PointX def /OldY PointY def
\else lineto \fi
} ifelse
} repeat
grestore
}%
\end@OpenObj
}\ignorespaces}
\catcode`\@=\TheAtCode\relax
%
\endinput
%%
%% END pst-hsb.tex
|
