# [pstricks] Right angle symbol in a 2D Projection

Juergen Gilg gilg at acrotex.net
Sun Feb 8 00:17:54 CET 2009

Dear list,

i am messing around how to make the right angle symbol from _pst-eucl_
look much better in a 2D projection of a 3D arrangement...

Shouldn't it be elliptic there instead of a part of a circle to show the
3D effect. I know that is not the idea of _pst-eucl_. However i had no
other idea to adjust the right angle better than with _pst-eucl_.
There is no will to act in 3D coordinates. Just the idea for the
projection and better looking.

Any ideas how to refine the following right angle symbols to show the 3D
character of the graphic a bit better in 2D?

%% begin minimal example %%
\documentclass{article}
\usepackage{amsmath}
\begin{document}
\begin{pspicture}(-1,-3)(7,3)%\psgrid
\psline{->}(0,0)(4,-1)
\psline{->}(0,0)(2.8,1.9)
\psline{->}(0,0)(0,2)
\psline{-}(2.8,1.9)(6.8,0.9)
\psline{-}(4,-1)(6.8,0.9)
\pstTriangle[PointSymbolA=none,PointSymbolB=none,PointSymbolC=none,PointNameA=none,PointNameB=none,PointNameC=none,linewidth=0pt,linestyle=none](0,0){A}(2,-0.5){B}(1.4,0.95){C}
\pstTriangle[PointSymbolA=none,PointSymbolB=none,PointSymbolC=none,PointNameA=none,PointNameB=none,PointNameC=none,linewidth=0pt,linestyle=none](1.4,0.95){D}(0,0){E}(0,2){F}
\pstTriangle[PointSymbolA=none,PointSymbolB=none,PointSymbolC=none,PointNameA=none,PointNameB=none,PointNameC=none,linewidth=0pt,linestyle=none](0,2){G}(0,0){H}(2,-0.5){I}
\pstRightAngle[RightAngleType=german,RightAngleSize=0.6]{D}{E}{F}
\pstRightAngle[RightAngleType=german]{I}{H}{G}
\pstMarkAngle[MarkAngleRadius=1.3,LabelSep=0.9,arrows=->]{B}{A}{C}{$\alpha$}
\resetOptions
\psellipticarc{->}(0,1.4)(0.2,0.11){120}{420}
\end{pspicture}
\end{document}
%% end minimal example %%

Juergen

--
Jürgen Gilg
Austr. 59
70376 Stuttgart
-------------------------------------
Tel       0711.59 27 88
e-Mail    gilg at acrotex.net
Websites  www.acrotex.net
www.brueckenkurs-physik.de
www.gilligan-online.de

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://tug.org/pipermail/pstricks/attachments/20090208/23e39dfa/attachment.html