[pstricks] Create an own Gouraud figure

[Herbert Voss]

Marco Daniel schrieb:
> I thought there is an easier method. It would be enough when the shading
> is vertical.

\documentclass{article}
\usepackage{pstricks-add}
\def\psGRectangle(#1)(#2)#3#4#5{%
  \psGTriangle(#1)(#1|#2)(#2){#3}{#4}{#5}%
  \psGTriangle(#1)(#2|#1)(#2){#3}{#4}{#5}}
\begin{document}

\psset{unit=0.5}
\begin{pspicture}(0,-10)(20,10)
\psGRectangle(0,-10)(20,10){orange!65}{orange!40}{orange!20}
\end{pspicture}

\end{document}

Herbert