Btukfyl

I am trying to duplicate the node highlighted in green but along a curved path. It mostly works, but when I attempt to apply the text align=center effect to the decoration, I get

Dimension too large.

I get pretty good results if I set defRadius{2.8cm}.
But, if I set defRadius{2.6cm}, then I get the same error as above. This I suspect is due to the fact that the text can no longer fit along the given path.

To avoid this problem in the future, if I can get the text align=center to work, I can provide a pathwhich is more than sufficient to place the text and draw the node separately.

As per AndreC's comment, commenting out the fill=yellow and rounded corners=2pt:

draw [draw=red, 

    postaction={

        decoration={

            text along path,

            text={|+tinyscshape|MyText},

            raise=0.5ex,

            text align=center,% <---- Uncommented

        },

        decorate,

    },

    %% No error with these commented, but results are wack!!

    %fill=yellow,

    %rounded corners=2pt,

    ] 

no longer results in an error. However, with this I get the following:

Notes:

• The MWE as is produces the image shown above as the text align=center is commented out. To get the railing case, that needs to be uncommented.

Code:

documentclass{article}

usepackage{tikz}

usetikzlibrary{decorations}

usetikzlibrary{decorations.text}



newcommand{MyText}{ABCDEF}



tikzset{My Node Style/.style={

        fill=green, 

        draw=red, 

        inner sep=2pt,

        rounded corners=2pt,

        font=tiny,

}}



begin{document}

begin{tikzpicture}



    node [My Node Style] at (0,2.5) {textsc{MyText}};



    defRadius{3.0cm}

    defStartAngle{100}

    defEndAngle{80}

    defNodeThickness{1.6ex}



    draw [draw=red, 

        postaction={

            decoration={

                text along path,

                text={|+tinyscshape|MyText},

                raise=0.5ex,

                %text align=center,% <---- ????? Dimension too big ?????

            },

            decorate,

        },

        fill=yellow,

        rounded corners=2pt,

        ] 



        ([shift={(StartAngle:Radius)}]0,0) 

            arc [start angle=StartAngle, end angle=EndAngle, radius=Radius]

            -- ++(EndAngle:NodeThickness)

            arc [start angle=EndAngle, end angle=StartAngle, radius=Radius+NodeThickness]

            -- cycle

            ;

end{tikzpicture}

end{document}