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Problemas com âncoras e pgfkeys

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Problemas com âncoras e pgfkeys

EmComo usar corretamente novas opções em \pgfdeclareshape do pacote makeshapeTive um problema de inclusão \ifxque \pgfdeclareshapefoi resolvido por @marmot.

Neste momento, estou tentando incluir opções usando \pgfkeys. No entanto, agora não consigo detectar opções em \anchor, enquanto trabalho em \setpath.

Aqui o código:

\documentclass[a4paper,10pt]{article}
\usepackage{filecontents}
\begin{filecontents*}{valvula.tex}
\makeatletter

% Dimensiones medidas en Autocad para las válvulas con anchura = 3mm en un
% círculo de 2mm de radio.

\def\gap{0mm}

\newdimen\radio@llave \radio@llave=2mm
\newdimen\x@llave \x@llave=1.5mm
\newdimen\y@llave \y@llave=1.32mm
\def\f@maniv{0.9} % Proporción de la longitud de la manivela

\pgfkeys{ % Colores de las mariposas de las válvulas:
  /tikz/.cd,
  color izquierda/.initial=\pgfutil@empty,
  color derecha/.initial=\pgfutil@empty,
}

\pgfkeys{
    /tikz/posicion manivela/.is choice,
    /tikz/posicion manivela/izquierda/.code={\def\pos@manivela{-1}},
    /tikz/posicion manivela/derecha/.code={\def\pos@manivela{1}}
}

%% Anchor path:

\def\generalanchor{} % No es necesario, el nodo no llevará texto.

%% Background path:

\def\valvulaborder{ % Obtiene la caja de texto correcta:

    % La parte anterior no es necesaria, no llevará texto el nodo
    % Triángulo izquierdo:
    %
    \pgfpathmoveto{\pgfpointorigin}
    \pgfpathlineto{\pgfpoint{-\x@llave}{ \y@llave}}
    \pgfpathlineto{\pgfpoint{-\x@llave}{-\y@llave}}
    \pgfpathclose
    %\typeout{\tikz@fillcolor}
    %\typein{}
    \edef\pgfutil@tmpa{\pgfkeysvalueof{/tikz/color izquierda}}
    \ifx\pgfutil@tmpa\empty
      \ifx\tikz@fillcolor\empty
        \pgfusepath{stroke}
      \else
        \pgfusepath{fill,stroke}
      \fi
    \else
      \pgfsetfillcolor{\pgfkeysvalueof{/tikz/color izquierda}}
      \pgfusepath{fill,stroke}
    \fi 
    %
    % Triángulo derecho:
    %
    %\typeout{derecha\pgfkeysvalueof{/tikz/color derecha}}
    \pgfpathmoveto{\pgfpointorigin}
    \pgfpathlineto{\pgfpoint{ \x@llave}{ \y@llave}}
    \pgfpathlineto{\pgfpoint{ \x@llave}{-\y@llave}}
    \pgfpathclose
    \edef\pgfutil@tmpa{\pgfkeysvalueof{/tikz/color derecha}}
    \ifx\pgfutil@tmpa\pgfutil@empty
      \ifx\tikz@fillcolor\empty
        \pgfusepath{stroke}
      \else
        \pgfsetfillcolor{\tikz@fillcolor}
        \pgfusepath{fill,stroke}
    \fi
    \else
      \pgfsetfillcolor{\pgfkeysvalueof{/tikz/color derecha}}
      \pgfusepath{fill,stroke}
    \fi

}

%% Declaración de la forma:

\pgfdeclareshape{valvula de esfera}{

  \setpaths{\generalanchor}{%
    \valvulaborder
    % La manivela de la válvula:
      \pgfpathmoveto{\pgfpoint{0em}{0em}}
      \pgfpathlineto{\pgfpoint{0em}{\radio@llave}}
      \ifnum\pos@manivela=-1 % a izquierda
        \pgfpathmoveto{\pgfpoint{0em}{\radio@llave}}
        \pgfpathlineto{\pgfpoint{-\f@maniv\x@llave}{\radio@llave}}
    \else % a derecha
        \pgfpathmoveto{\pgfpoint{0em}{\radio@llave}}
        \pgfpathlineto{\pgfpoint{ \f@maniv\x@llave}{\radio@llave}}
    \fi
  }

  \savedanchor{\centerpoint}{
      \pgf@x = \ctbnex
      \pgf@y = \ctbney
      \advance\pgf@x by \gap
      \advance\pgf@y by \gap
      \mincorrect{\pgf@x}{\pgfshapeminwidth}
      \mincorrect{\pgf@y}{\pgfshapeminheight}
      \advance\pgf@x\pgfshapeouterxsep
      \advance\pgf@y\pgfshapeouterysep
  }

  \inheritsavedanchors[from=valvula]
  \inheritanchorborder[from=valvula]

  \inheritanchor[from=valvula]{c}
  \inheritanchor[from=valvula]{ur}
  \inheritanchor[from=valvula]{r}
  \inheritanchor[from=valvula]{dr}
  \inheritanchor[from=valvula]{dl}
  \inheritanchor[from=valvula]{l}
  \inheritanchor[from=valvula]{ul}

  % De la manivela de la válvula
  \anchor{tc}{\centerpoint \pgf@x=0\pgf@x \pgf@y=\radio@llave}
  \anchor{tm}{\ifnum\pos@manivela=-1 % a izquierda
    \centerpoint \pgf@x=-\f@maniv\x@llave \pgf@y=\radio@llave
  \else
    \centerpoint \pgf@x= \f@maniv\x@llave \pgf@y=\radio@llave
  \fi}

}

\makeatother

\end{filecontents*}

\usepackage{tikz}

\usepackage{makeshape}

\tikzset{
  st texto/.style={
    font=\sffamily\footnotesize,
    circle,black,fill=white,inner sep=0.1em
  },
  st valvula/.style={
    draw=blue,minimum width=6mm,minimum height=3mm,line width=0.2mm
  },
  st linea nodo/.style={line width=0.1mm,latex-,orange}
}

\input{valvula.tex}

\begin{document}

\begin{tikzpicture}[
  x=1mm,y=1mm,remember picture, overlay,shift={(current page.center)}
]

\begin{scope}[shift={(0,0)}]

  \node[%
    valvula de esfera,st valvula,posicion manivela=izquierda,
    color izquierda=yellow!50,color derecha=cyan!25
  ] (v3) at (0,0) {};

  \draw[st linea nodo] (v3.tc) -- ++(90:10) node[st texto] {tc};
  \draw[st linea nodo] (v3.tm) -- ++(110:10) node[st texto] {tm};

\end{scope}


\begin{scope}[shift={(50,0)},posicion manivela=derecha]

  \node[%
    valvula de esfera,st valvula,
    color izquierda=yellow!50,color derecha=cyan!25
  ] (v4) at (0,0) {};

  \draw[st linea nodo] (v4.tc) -- ++(90:10) node[st texto] {tc};
  \draw[st linea nodo] (v4.tm) -- ++(70:10) node[st texto] (ntm) {tm};

  %
  \node[above of= ntm,red,align=center] (comentm) {Here tm should\\ be at right};
  \path (comentm) edge[red,out=0,in=90,-latex] (v4.tr);

\end{scope}


\end{tikzpicture}

\end{document}

Estou tendo o erro a seguir:

! Undefined control sequence.
\pgf@anchor@valvula de esfera@tm ...\pos@manivela

Estou extremamente confuso. Por favor, alguém pode me ajudar? Vou desistir de tudo isso.

Responder1

Aqui está outra proposta em que as chaves não são globais. Deixei alguns \typeouts para indicar uma possível forma de depurar tais códigos.

\documentclass[a4paper,10pt]{article}
\usepackage{filecontents}
\begin{filecontents*}{valvula.tex}
\makeatletter

% Dimensiones medidas en Autocad para las válvulas con anchura = 3mm en un
% círculo de 2mm de radio.

\def\gap{0mm}

\newdimen\radio@llave \radio@llave=2mm
\newdimen\x@llave \x@llave=1.5mm
\newdimen\y@llave \y@llave=1.32mm
\def\f@maniv{0.9} % Proporción de la longitud de la manivela

\pgfkeys{ % Colores de las mariposas de las válvulas:
  /tikz/.cd,
  color izquierda/.initial=\pgfutil@empty,
  color derecha/.initial=\pgfutil@empty,
}

\pgfkeys{
    /tikz/posicion manivela/.is choice,
    /tikz/posicion manivela/izquierda/.code={\tikzset{posicion manivela value=-1}},
    /tikz/posicion manivela/derecha/.code={\tikzset{posicion manivela value=1}},
    /tikz/posicion manivela value/.initial=-1
    %/tikz/posicion manivela/.default=izquierda
}

%% Anchor path:

\def\generalanchor{} % No es necesario, el nodo no llevará texto.

%% Background path:

\def\valvulaborder{ % Obtiene la caja de texto correcta:

    % La parte anterior no es necesaria, no llevará texto el nodo
    % Triángulo izquierdo:
    %
    \pgfpathmoveto{\pgfpointorigin}
    \pgfpathlineto{\pgfpoint{-\x@llave}{ \y@llave}}
    \pgfpathlineto{\pgfpoint{-\x@llave}{-\y@llave}}
    \pgfpathclose
    %\typeout{\tikz@fillcolor}
    %\typein{}
    \edef\pgfutil@tmpa{\pgfkeysvalueof{/tikz/color izquierda}}
    \ifx\pgfutil@tmpa\empty
      \ifx\tikz@fillcolor\empty
        \pgfusepath{stroke}
      \else
        \pgfusepath{fill,stroke}
      \fi
    \else
      \pgfsetfillcolor{\pgfkeysvalueof{/tikz/color izquierda}}
      \pgfusepath{fill,stroke}
    \fi 
    %
    % Triángulo derecho:
    %
    %\typeout{derecha\pgfkeysvalueof{/tikz/color derecha}}
    \pgfpathmoveto{\pgfpointorigin}
    \pgfpathlineto{\pgfpoint{ \x@llave}{ \y@llave}}
    \pgfpathlineto{\pgfpoint{ \x@llave}{-\y@llave}}
    \pgfpathclose
    \edef\pgfutil@tmpa{\pgfkeysvalueof{/tikz/color derecha}}
    \ifx\pgfutil@tmpa\pgfutil@empty
      \ifx\tikz@fillcolor\empty
        \pgfusepath{stroke}
      \else
        \pgfsetfillcolor{\tikz@fillcolor}
        \pgfusepath{fill,stroke}
    \fi
    \else
      \pgfsetfillcolor{\pgfkeysvalueof{/tikz/color derecha}}
      \pgfusepath{fill,stroke}
    \fi

}

%% Declaración de la forma:

\pgfdeclareshape{valvula de esfera}{

  \setpaths{\generalanchor}{%
    \valvulaborder
    % La manivela de la válvula:
      \pgfpathmoveto{\pgfpoint{0em}{0em}}
      \pgfpathlineto{\pgfpoint{0em}{\radio@llave}}
      \typeout{\pgfkeysvalueof{/tikz/posicion manivela value}}
      \ifnum\pgfkeysvalueof{/tikz/posicion manivela value}=-1 % a izquierda
        \typeout{\pgfkeysvalueof{/tikz/posicion manivela value} worked}
        \pgfpathmoveto{\pgfpoint{0em}{\radio@llave}}
        \pgfpathlineto{\pgfpoint{-\f@maniv\x@llave}{\radio@llave}}
    \else % a derecha
        \pgfpathmoveto{\pgfpoint{0em}{\radio@llave}}
        \pgfpathlineto{\pgfpoint{ \f@maniv\x@llave}{\radio@llave}}
    \fi
  }

  \savedanchor{\centerpoint}{
      \pgf@x = \ctbnex
      \pgf@y = \ctbney
      \advance\pgf@x by \gap
      \advance\pgf@y by \gap
      \mincorrect{\pgf@x}{\pgfshapeminwidth}
      \mincorrect{\pgf@y}{\pgfshapeminheight}
      \advance\pgf@x\pgfshapeouterxsep
      \advance\pgf@y\pgfshapeouterysep
  }

  \inheritsavedanchors[from=valvula]
  \inheritanchorborder[from=valvula]

  \inheritanchor[from=valvula]{c}
  \inheritanchor[from=valvula]{ur}
  \inheritanchor[from=valvula]{r}
  \inheritanchor[from=valvula]{dr}
  \inheritanchor[from=valvula]{dl}
  \inheritanchor[from=valvula]{l}
  \inheritanchor[from=valvula]{ul}

  % De la manivela de la válvula
  \anchor{tc}{\centerpoint \pgf@x=0\pgf@x \pgf@y=\radio@llave}
  \anchor{tm}{\typeout{\pgfkeysvalueof{/tikz/posicion manivela value}}
    \ifnum\pgfkeysvalueof{/tikz/posicion manivela value}=-1 % a izquierda
    \typeout{\pgfkeysvalueof{/tikz/posicion manivela value} worked}
    \centerpoint \pgf@x=-\f@maniv\x@llave \pgf@y=\radio@llave
  \else
    \centerpoint \pgf@x= \f@maniv\x@llave \pgf@y=\radio@llave
  \fi}

}

\makeatother

\end{filecontents*}

\usepackage{tikz}

\usepackage{makeshape}

\tikzset{
  st texto/.style={
    font=\sffamily\footnotesize,
    circle,black,fill=white,inner sep=0.1em
  },
  st valvula/.style={
    draw=blue,minimum width=6mm,minimum height=3mm,line width=0.2mm
  },
  st linea nodo/.style={line width=0.1mm,latex-,orange}
}

\input{valvula.tex}

\begin{document}

\begin{tikzpicture}[
  x=1mm,y=1mm,remember picture, overlay,shift={(current page.center)}
]

\begin{scope}[shift={(0,0)}]

  \node[%
    valvula de esfera,st valvula,posicion manivela=izquierda,
    color izquierda=yellow!50,color derecha=cyan!25
  ] (v3) at (0,0) {};

  \draw[st linea nodo] (v3.tc) -- ++(90:10) node[st texto] {tc};
  \draw[st linea nodo] (v3.tm) -- ++(110:10) node[st texto] {tm};

\end{scope}


\begin{scope}[shift={(50,0)},posicion manivela=derecha]

  \node[%
    valvula de esfera,st valvula,
    color izquierda=yellow!50,color derecha=cyan!25
  ] (v4) at (0,0) {};

  \draw[st linea nodo] (v4.tc) -- ++(90:10) node[st texto] {tc};
  \draw[st linea nodo] (v4.tm) -- ++(70:10) node[st texto] (ntm) {tm};

  %
  \node[above of= ntm,red,align=center] (comentm) {Here tm should\\ be at right};
  %\path (comentm) edge[red,out=0,in=90,-latex] (v4.tr);

\end{scope}


\end{tikzpicture}

\end{document}

A última linha \path (comentm) edge[red,out=0,in=90,-latex] (v4.tr);parece exigir uma âncora trque não está definida, até onde posso ver.

insira a descrição da imagem aqui

Responder2

Eu encontrei a solução. Foi muito fácil. Fiquei um pouco atordoado, mas no final consegui pensar com clareza.

eu substituí

\pgfkeys{
    /tikz/posicion manivela/.is choice,
    /tikz/posicion manivela/izquierda/.code={\def\pos@manivela{-1}},
    /tikz/posicion manivela/derecha/.code={\def\pos@manivela{1}}
}

por

\pgfkeys{
    /tikz/posicion manivela/.is choice,
    /tikz/posicion manivela/izquierda/.code={\xdef\pos@manivela{-1}},
    /tikz/posicion manivela/derecha/.code={\xdef\pos@manivela{1}}
}

e agora está funcionando.

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