[pstricks] projection in pst-solides3d
Zbigniew Nitecki
zbigniew.nitecki at tufts.edu
Wed Sep 22 22:02:09 CEST 2010
The code
%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\usepackage{pst-solides3d,pst-plot,pst-3dplot,amsmath}
\begin{document}
\begin{pspicture*}(-2.5,-2.0)(2.5,3.5)%
\psset{unit=0.25,lightsrc=40 50 50,viewpoint=18 40 25 rtp2xyz,solidmemory}
\psSolid[object=plan,% definition of plane @ z=0
definition=equation,args={[0 0 1 0]},
base=-2.5 2.5 -2.5 2.5,
fillcolor=gray!30,
name=zplane,
ngrid=10 10, grid,
action=draw**,
]
%
\defFunction{zcurve}(t){t cos 2 mul}{t sin}{}%
\psProjection[object=courbeR2,% slice @ x=0 (front part)
r=0.8,
linecolor=black,linewidth=0.8pt,
plan=zplane,
range=0 360,
resolution=720, visibility=false,
function=zcurve,
action=draw**
]
%
\composeSolid
%
\axesIIID[linecolor=darkgray, linewidth=1pt, showOrigin=false]%
(0,0,0)(3.0,3.0,3.0)
\end{pspicture*}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
leads to the picture below. I don't understand why the projected ellipse does not show up.
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/
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