Getting rid of a thin framing line when shading a triangle

Question

I am trying to draw a shaded triangle with tikz, using the following code:

\documentclass{article}
\usepackage{tikz}
\begin{document}
\begin{tikzpicture}
\fill[top color=green!40,middle color=white,shading angle=45]  (-2.5,-3) -- (12.5,3) -- (-2.5,3) -- cycle;
\end{tikzpicture}
\end{document}

I think it is hard to see in the image posted below, but just along the diagonal is a very thin line. Is there any way to get rid of this line?

This is with Tikz/PGF version 2.10.

Answer 1

Use \shade instead of \fill.

\documentclass{article}
\usepackage{tikz}
\begin{document}
\begin{tikzpicture}
\shade[top color=green!40,middle color=white,shading angle=45]  (-2.5,-3) -- (12.5,3) -- (-2.5,3) -- cycle;
\end{tikzpicture}
\end{document}

As noted by Paul replacing \fill by \path would also work:

\documentclass{article}
\usepackage{tikz}
\begin{document}
\begin{tikzpicture}
\path[top color=green!40,middle color=white,shading angle=45]  (-2.5,-3) -- (12.5,3) -- (-2.5,3) -- cycle;
\end{tikzpicture}
\end{document}