Label and anchor info for advanced voltages

[Rmano]

As noticed by @judober (see issue #448), when using advanced voltages we can say:

1. v, i, f : no arrows/symbols are added, and no voltage/current/flow label is generated (so we do not have label anchors/data)
2. v=~: the arrows/symbols are generated, and a series of anchors and info (rotation, etc) are generated for the blank label.

There is no provision for

3. not having arrow/symbols but having the information for the label placement generated (that could be useful if, for example, you want just to change the symbol but you are happy with the labels as they are).

I think that it would be nice to have an option to not draw the symbols (but generate the anchors) and placing the labels (that could be a blank one).

I am open to suggestions for a syntax; I do not want to create all the v_^ combinations, so I think that an extra key like suppress v or !v to add to suppress drawing could be ok.

[judober]

Maybe something like suppress arrows as the v-label does not have to be blank. Then one could just use v=~ as desired.

[Rmano]

@judober you can play with it if you want with:

circuitikzgit.sty.zip

But I'll do a couple of tests and then I hope to merge (and release) soon

[Rmano]

Maybe something like suppress arrows as the v-label does not have to be blank. Then one could just use v=~ as desired.

And yes, I did exactly that ;-)

[Rmano]

\newcommand{\iarronly}[1]{% name
    \node [currarrow, color=red, anchor=center,
    rotate=\ctikzgetdirection{#1-Iarrow}] at (#1-Ipos) {};
}
\newcommand{\varronly}[1]{% name
    \draw [color=blue] (#1-Vfrom) .. controls (#1-Vcont1)
        and (#1-Vcont2)..  (#1-Vto) node [currarrow,
        sloped, anchor=tip, allow upside down,pos=1]{};
}
\begin{circuitikz}[]
    \ctikzset{!vi/.style={no v symbols, no i symbols}}
    \ctikzset{bipole voltage style/.style={color=blue},
        bipole current style/.style={color=red}}
    \draw (120:6) to[R, *-,  name=R, v^=$v_R$, !vi]
        (120:3) to[short, i=$i_R$, name=SR, !vi] (0,0);
    \draw (180:4) to[L, o-, l=$L$, name=L2, v=$v_L$, !vi]
        (180:2) to[V, -*, name=V2, v_=$v_2$, !vi] (0:0);
    \iarronly{SR}\varronly{R}\varronly{L2}\varronly{V2}
\end{circuitikz}

[Rmano]

I am not sure if adding the !vif shorthand (and a corresponding vif!) could be useful for everybody... hmmm...

[Rmano]

I merged it because I want to release soon. Please @judober feel free to comment (others too ;-)!), I can always change things (before releasing)

[judober]

Wow, works like a charm.
It also removes the need for custom colored label printing when I accept different rotation for label and vlabel (example below).

\documentclass[class=report, 11pt,a4paper,tikz, border=4pt]{standalone}
% Version from https://github.com/circuitikz/circuitikz/issues/567
\usepackage[european, straightvoltages, americaninductors, betterproportions, nooldvoltagedirection]{circuitikzgit}[
]

\ctikzset{!vi/.style={no v symbols, no i symbols}}
\ctikzset{bipole voltage style/.style={color=blue},
	bipole current style/.style={color=red}}


\newcommand{\iarronly}[1]{% name
    \node [currarrow, color=red, anchor=center,
    rotate=\ctikzgetdirection{#1-Iarrow}] at (#1-Ipos) {};
}
\newcommand{\varronly}[1]{% name
    \draw [color=blue] (#1-Vfrom) .. controls (#1-Vcont1)
        and (#1-Vcont2)..  (#1-Vto) node [currarrow,
        sloped, anchor=tip, allow upside down,pos=1]{};
}

\begin{document}
	\begin{tikzpicture}
		\draw (120:6) to[R, *-,  name=R, v_<=$v_R$, !vi, l=R] (120:3) to[short, i=$i_R$, name=SR, !vi] (0,0);
		\draw (180:4) to[L, o-, l=$L$, name=L2, v=$v_L$, !vi] (180:2) to[V, -*, name=V2, v_=$v_2$, !vi] (0:0);
		\iarronly{SR}
		\varronly{R}
		\varronly{L2}
		\varronly{V2}
	\end{tikzpicture}
\end{document}

[Rmano]

Thanks! ;-)