How can i color an edge or a line in TikZ with multiple colors? I'd actually like the color to be displayed "in parallel".
Consider the following code:
\documentclass[a4paper,10pt]{article}
\usepackage[utf8]{inputenc}
\usepackage{tikz}
\usetikzlibrary{arrows,shapes,positioning}
\usetikzlibrary{decorations.markings}
\tikzstyle arrowstyle=[scale=1]
\tikzstyle directed=[postaction={decorate,decoration={markings,
mark=at position .6 with {\arrow[arrowstyle]{stealth}}}}]
\begin{document}
\begin{tikzpicture}
\draw[directed] (-0.5,1)--(0.5,1) node [midway,above,black] {$b^{-1}$};
\draw[directed] (-1,0.5)--(-0.5,1)node [midway,left,black] {$a$};
\draw[directed] (-1,-0.5)--(-1,0.5)node [midway,left,black] {$b$};
\draw[directed] (-0.5,-1)--(-1,-0.5)node [midway,left,black] {$c^{-1}$};
\draw[ultra thick,directed,red] (-0.5,-1)--(0.5,-1)node [midway,below,black]{$d$};
%I'd like the following three both in red and in blue
\draw[ultra thick,directed,red] (1,0.5)--(0.5,1)node [midway,right,black] {$a$};
\draw[ultra thick,directed,red] (0.5,-1)--(1,-0.5)node [midway,right,black] {$c^{-1}$};
\draw[ultra thick,directed,red] (1,-0.5)--(1,0.5) node [midway,right,black] {$d^{-1}$};
\draw[ultra thick,directed,red] (-1,-1.5)--(-0.5,-1) node[midway,left,black] {$a^{-1}$};
\draw[ultra thick,directed,red](-1,-2.5)--(-1,-1.5) node [midway,left,black] {$b^{-1}$};
\draw[ultra thick,directed,red] (-0.5,-3)--(-1,-2.5) node[midway,left,black] {$a$};
\draw[directed] (-0.5,-3)--(0.5,-3) node [midway,below,black] {$b^{-1}$};
\draw[ultra thick,directed,blue] (0.5,-3)--(1,-2.5) node[midway,right,black] {$c$};
\draw[ultra thick,directed,blue] (1,-2.5)--(1,-1.5) node[midway,right,black] {$d$};
\draw[ultra thick,directed,blue] (1,-1.5)--(0.5,-1) node[midway,right,black] {$c^{-1}$};
\end{tikzpicture}
\end{document}
I would like to color the red edges labelled by a
, d^{-1}
, c^{-1}
in the upper octagon both in red and in blue.
How can I do that?
Best Answer
One way of doing this is to draw the lines in blue and clip them in half.
You can use
\clip[draw]
to see the clipping rectangle.