如何裁剪并绘制近似图?
\documentclass[border=10pt]{standalone} \usepackage{pst-eucl,pst-text,pstricks-add,pst-grad} \usepackage{mathptmx} \begin{document} \begin{pspicture}[showgrid](-5,-5)(10,5) \psframe*[fillstyle=solid,opacity=.5](-5,-5)(10,5) \psset{PointName=none,PointSymbol=none,linewidth=4.5pt,lin...