[pstricks] InsideArrow

[Herbert Voss]

Zbigniew Nitecki schrieb:
> Can the InsideArrow option be used for either \psarc or \psellipticarc? 
> I tried to use it in the code below;  there were no error messages, but
> the arrows didn't show up:

not yet possible for \psarc
However, cretae an own macro:

\documentclass[11pt,twoside]{article}
\usepackage{pstricks}
\usepackage{pstricks-add}
\def\psarcArrow[#1](#2)#3#4#5#6{%
  \psarc[#1,arrows=-](#2){#3}{#4}{#5}
  \multido{\iA=1+1}{#6}{%
    \psarc[#1](#2){#3}%
    {!#5 #4 sub #6 1 add div \iA\space 1 sub mul #4 add}%
    {!#5 #4 sub #6 1 add div \iA\space mul #4 add}}}
\begin{document}

\defineTColor{tGray40}{gray!40}
\defineTColor{tBlack40}{black!40}
\defineTColor{tBlack80}{black!80}
\begin{pspicture}(-3,-0.5)(3,3)
  \multido{\rt=0+18}{11}{%
    \pscircle[style=tBlack40, linestyle=none]%
      (!\rt\space cos 2 mul \rt\space sin 2 mul){0.75}}
  \psline{<->}(-2.5,0)(2.5,0)
  \psline{->}(0,0)(0,2.5)
  \psarcArrow[linewidth=1.2pt,arrows=->,
     arrowscale=1.5](0,0){2}{0}{180}{3}
\end{pspicture}

\end{document}

Herbert














> 
>     \begin{pspicture}(-3,-0.5)(3,3)
>     \defineTColor{tGray40}{gray!40}
>     \defineTColor{tBlack40}{black!40}
>     \defineTColor{tBlack80}{black!80}
>         \multido{\rt=0+18}{11}{%
>             \pscircle[style=tBlack40, linestyle=none](!\rt\space cos 2
> mul \rt\space sin 2 mul){0.75}
>         }
>         \psline{<->}(-2.5,0)(2.5,0)
>         \psline{->}(0,0)(0,2.5)
>         \psarc[linewidth=1.2pt,ArrowInside=->,
> ArrowInsideNo=3](0,0){2}{0}{180}
>         \multido{\rt=0+5}{4}{%
>             \psellipticarc[ArrowInside=->, ArrowInsideNo=3](!0 \rt\space
> tan 2 mul neg)%
>                 (!2 \rt\space cos div dup){!\rt\space}{!180 \rt\space sub}
>         }
>     \end{pspicture}
> 
> 
> Zbigniew Nitecki
> Department of Mathematics
> Tufts University
> Medford, MA 02155
> 
> telephones:
> Office    (617)627-3843
> Dept.    (617)627-3234
> Dept. fax    (617)627-3966
> http://www.tufts.edu/~znitecki/
> 
> 
> 
> ------------------------------------------------------------------------
> 
> _______________________________________________
> PSTricks mailing list
> PSTricks at tug.org
> http://tug.org/mailman/listinfo/pstricks