答案1
这是球体上的投影(也可以使用 eps 图像):
\listfiles
\documentclass[pstricks]{standalone}
\usepackage{pst-mirror}
\usepackage{pst-grad}
\begin{document}
\begin{pspicture}(-7,-7)(7,7)
\newpsstyle{GradWhiteYellow}{fillstyle=gradient,gradbegin=yellow,gradend=yellow!20,
linecolor=yellow!50,GradientCircle=true,gradmidpoint=0,GradientPos={(1,1)}}%
\pscircle[style=GradWhiteYellow](0,0){7}
\pstSphereGrid[linecolor=red,grille=10,Ymin=-50,Ymax=50,Xmax=80,Xmin=-80,normale=0 0](20,0,0)
\pstSphereGrid[linecolor=blue,grille=10,Ymin=-40,Ymax=-20,Xmax=80,Xmin=-80,normale=0 90](40,0,-10)%
\pstTextSphere[fillstyle=solid,fillcolor=red,normale=0 0,fontscale=40,PSfont=Time-Roman,yO=0](20,0,10){pst-mirror}
\pstTextSphere[fillstyle=solid,fillcolor=black,normale=0 0,fontscale=20,PSfont=Helvetica,yO=0](20,0,35){PSTricks}
\pstTextSphere[fillstyle=solid,fillcolor=blue,normale=0 90,fontscale=10,PSfont=Helvetica,yO=2.5](10,0,-10){A Spherical Mirror}%
\end{pspicture}
\end{document}