[pstricks] Strange 3D behaviour with viewpoint 1 -1 1

[Herbert Voss]

Georg Verweyen wrote:
> The arrows of 3D graphics are broken if (and only if) all of the
> following conditions are fullfilled:
> - The linewidth is quite thick.
> - The viewpoint is 1 -1 1.
> - The ps file is transformed to pdf.
> - The AdobeReader is /not/ set to "print as image".
> - The file is printed, you will only see the effect on the paper,
> while the display is okay.
> You can see this behaviour when commenting and uncommenting the two
> different lines with viewpoint settings in the following example.

please try latex->dvips->ps2pdf with the following

Herbert


\listfiles
\documentclass{article}
\usepackage{pstricks}
\usepackage{pst-3d}
\usepackage{pstricks-add}

\defineTColor{hell}{black} % This provides transparency
                           % for the frame
\begin{document}
\pagestyle{empty}
\sffamily
\begin{pspicture}(6,6)
  \psset{%
    unit=0.75,%
    viewpoint=1.2 -1.5 1,% If this is active, everything's fine
    arrowinset=0,%
    arrowscale=0.75 0.2,%
    linecolor=lightgray,%
    linewidth=2%
  }
  \ThreeDput[normal=0 0 1](0,0,5){%Arrow to 2
    \psline[arrows=-](0,1)(2,1)%
  }
  \ThreeDput[normal=1 0 0](2,1,5){%Frame at 2
    \psframe[linewidth=.2mm, style=hell](-2,-1)(2,1)
  }
  \ThreeDput[normal=1 0 0](2,1,5.5){%Label
    \Large \white Something
  }
  \ThreeDput[normal=0 0 1](0,0,5){%Arrow from 2
    \psline[arrows=-](2,1)(5,1)%
  }
  \ThreeDput(2.2,1,5){%
    \makebox[0em][l]{\Large Arrow}
  }
\end{pspicture}

\begin{pspicture}(6,6)
  \psset{%
    unit=0.75,%
     viewpoint=1 -1 1,% try activating this line and print as pdf
    arrowinset=0,%
    arrowscale=0.75 0.2,%
    linecolor=lightgray,%
    linewidth=2%
  }
  \ThreeDput[normal=0 0 1](0,0,5){%Arrow to 2
    \psline[arrows=-](0,1)(2,1)%
  }
  \ThreeDput[normal=1 0 0](2,1,5){%Frame at 2
    \psframe[linewidth=.2mm, style=hell](-2,-1)(2,1)
  }
  \ThreeDput[normal=1 0 0](2,1,5.5){%Label
    \Large \white Something
  }
  \ThreeDput[normal=0 0 1](0,0,5){%Arrow from 2
    \psline[arrows=-](2,1)(5,1)%
  }
  \ThreeDput(2.2,1,5){%
    \makebox[0em][l]{\Large Arrow}
  }
\end{pspicture}


\end{document}




  *File List*
  article.cls    2001/04/21 v1.4e Standard LaTeX document class
   size10.clo    2001/04/21 v1.4e Standard LaTeX file (size option)
pstricks.sty    2004/05/06 v0.2k LaTeX wrapper for `PSTricks' (RN,HV)
pstricks.tex    2004/06/29 v1.05 `PSTricks' (tvz)
   xcolor.sty    2004/07/04 v2.00 LaTeX color extensions (UK)
    color.cfg    2001/08/31 v1.1 color configuration of teTeX/TeXLive
    dvips.def    1999/02/16 v3.0i Driver-dependant file (DPC,SPQR)
   pst-3d.sty    2004/07/15 package wrapper for pst-3d.tex
   pst-3d.tex    1997/03/25 97 `pst-3d' (tvz)
pstricks-add.sty    2004/07/18 package wrapper for pstricks-add.tex (hv)
pstricks-add.tex    2004/09/01 v2.14 `PSTricks-add' (hv)
  ***********


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