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Die projizierte Koordinate in TikZ ist nicht richtig platziert

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Die projizierte Koordinate in TikZ ist nicht richtig platziert

Ich versuche, ein Flugzeug zu zeichnen. Als ich das Fenster für das Cockpit zeichnete, verwendete ich projizierte Punkte, um rechte Winkel zu erhalten. Aber es klappt nicht wie erwartet. Kann mir jemand einen Hinweis geben, was ich falsch mache?

\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{calc}
\pagestyle{empty}
\begin{document}

\def\aeBodyRadius{0.25cm}
\def\aeBodyNoseDistance{0.21cm}
\begin{tikzpicture}[x=5cm,y=5cm,scale=3,every node={transform shape}]

  \coordinate (TAIL) at (0,0);
  \coordinate (NOSE) at ($(TAIL)+(30:1)$);

  \coordinate (MID)     at ($(TAIL)!0.75!(NOSE)$);

  \coordinate (MID/TOP) at ($(MID)!\aeBodyRadius!90:(NOSE)$);
  \coordinate (MID/BOT) at ($(MID)!\aeBodyRadius!-90:(NOSE)$);

  \coordinate (NOSE/TIP) at ($(NOSE)!\aeBodyNoseDistance!90:(MID)$);

  \coordinate (HIND/TOP) at ($(TAIL)!\aeBodyRadius!90:(NOSE)$);
  \coordinate (HIND/BOT) at ($(TAIL)!\aeBodyRadius!-90:(NOSE)$);

  \node[fill,circle,inner sep=1pt] at (MID/TOP) {};
  \node[fill,circle,inner sep=1pt] at (MID/BOT) {};
  \node[fill,circle,inner sep=1pt] at (HIND/TOP) {};
  \node[fill,circle,inner sep=1pt] at (HIND/BOT) {};

  \draw[rounded corners=10pt] 
                             (HIND/TOP) --
                             (MID/TOP)  --
                             node [pos=0.25] (WINDOW/TOP/N) {}
                             node [pos=0.50] (WINDOW/BOT/N) {}
                             (NOSE/TIP) -- 
                             (MID/BOT)  --
                             (HIND/BOT);
    \coordinate (WINDOW/TOP) at (WINDOW/TOP/N.center);
    \coordinate (WINDOW/BOT) at (WINDOW/BOT/N.center);

    \coordinate (WINDOW/RIG/T) at ($(TAIL)!(WINDOW/TOP)!(NOSE)$);
    \coordinate (WINDOW/RIG)   at ($(WINDOW/TOP)!(WINDOW/BOT)!(WINDOW/RIG/T)$);

    \draw (WINDOW/TOP) -- (WINDOW/RIG) -- (WINDOW/BOT);

    \draw[red] (TAIL) -- (NOSE);

\end{tikzpicture}

\end{document}

Bildbeschreibung hier eingeben

Die "rote" Linie in der Mitte des Flugzeugs zeigt deutlich, wie meineaufrechtist nicht das, was es sein sollte.

AKTUALISIEREN

Was scheintnichtDer folgende Codeausschnitt sollte funktionieren:

    \coordinate (WINDOW/RIG/T) at ($(TAIL)!(WINDOW/TOP)!(NOSE)$);
    \coordinate (WINDOW/RIG)   at ($(WINDOW/TOP)!(WINDOW/BOT)!(WINDOW/RIG/T)$);

Die projizierten Punkte scheinen nicht auf der entsprechenden Senkrechten zu liegen. Insbesondere (WINDOW/RIG)sollten über der roten Linie liegen, da die Linie durch (WINDOW/TOP)und (WINDOW/RIG/T)senkrecht zur roten Linie durch (TAIL)und sein sollte (NOSE).

Antwort1

Wie erwähnt vonA. Ellett, der Fehler wird verursacht durch \pgfpointnormalised. Eine Lösung zur Erzielung einer besseren Genauigkeit finden Sie hierAntwort.

Angewandt auf das MWE:

\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{calc}
\pagestyle{empty}

% use the Mark Wibrow's correction
\makeatletter
\def\pgfpointnormalised#1{%
\pgf@process{#1}%
\pgfmathatantwo{\the\pgf@y}{\the\pgf@x}%
\let\pgf@tmp=\pgfmathresult%
\pgfmathcos@{\pgf@tmp}\pgf@x=\pgfmathresult pt\relax%
\pgfmathsin@{\pgf@tmp}\pgf@y=\pgfmathresult pt\relax%
}
\makeatother

\begin{document}

\def\aeBodyRadius{0.25cm}
\def\aeBodyNoseDistance{0.21cm}
\begin{tikzpicture}[x=5cm,y=5cm,scale=3,every node={transform shape}]

  \coordinate (TAIL) at (0,0);
  \coordinate (NOSE) at ($(TAIL)+(30:1)$);

  \coordinate (MID)     at ($(TAIL)!0.75!(NOSE)$);

  \coordinate (MID/TOP) at ($(MID)!\aeBodyRadius!90:(NOSE)$);
  \coordinate (MID/BOT) at ($(MID)!\aeBodyRadius!-90:(NOSE)$);

  \coordinate (NOSE/TIP) at ($(NOSE)!\aeBodyNoseDistance!90:(MID)$);

  \coordinate (HIND/TOP) at ($(TAIL)!\aeBodyRadius!90:(NOSE)$);
  \coordinate (HIND/BOT) at ($(TAIL)!\aeBodyRadius!-90:(NOSE)$);

  \node[fill,circle,inner sep=1pt] at (MID/TOP) {};
  \node[fill,circle,inner sep=1pt] at (MID/BOT) {};
  \node[fill,circle,inner sep=1pt] at (HIND/TOP) {};
  \node[fill,circle,inner sep=1pt] at (HIND/BOT) {};

  \draw[rounded corners=10pt] 
                             (HIND/TOP) --
                             (MID/TOP)  --
                             node [pos=0.25] (WINDOW/TOP/N) {}
                             node [pos=0.50] (WINDOW/BOT/N) {}
                             (NOSE/TIP) -- 
                             (MID/BOT)  --
                             (HIND/BOT);
    \coordinate (WINDOW/TOP) at (WINDOW/TOP/N.center);
    \coordinate (WINDOW/BOT) at (WINDOW/BOT/N.center);

    \coordinate (WINDOW/RIG/T) at ($(TAIL)!(WINDOW/TOP)!(NOSE)$);
    \coordinate (WINDOW/RIG)   at ($(WINDOW/TOP)!(WINDOW/BOT)!(WINDOW/RIG/T)$);

    \draw (WINDOW/TOP) -- (WINDOW/RIG) -- (WINDOW/BOT);

    \draw[red] (TAIL) -- (NOSE);

\end{tikzpicture}

\end{document}

Bildbeschreibung hier eingeben

Antwort2

Wahrscheinlich wollten Sie WINDOW/RIG/T entlang der Hauptachse platzieren, aber das hat funktioniert. (Wenn es nicht kaputt ist...)

vvvoooooom!

\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{calc}
\pagestyle{empty}
\begin{document}
\def\aeBodyRadius{0.25cm}
\def\aeBodyNoseDistance{0.21cm}
\begin{tikzpicture}[x=5cm,y=5cm,scale=3,every node={transform shape}]
  \coordinate (TAIL) at (0,0);
  \coordinate (NOSE) at ($(TAIL)+(30:1)$);
  \coordinate (MID)     at ($(TAIL)!0.75!(NOSE)$);
  \coordinate (MID/TOP) at ($(MID)!\aeBodyRadius!90:(NOSE)$);
  \coordinate (MID/BOT) at ($(MID)!\aeBodyRadius!-90:(NOSE)$);
  \coordinate (NOSE/TIP) at ($(NOSE)!\aeBodyNoseDistance!90:(MID)$);
  \coordinate (HIND/TOP) at ($(TAIL)!\aeBodyRadius!90:(NOSE)$);
  \coordinate (HIND/BOT) at ($(TAIL)!\aeBodyRadius!-90:(NOSE)$);
  \node[fill,circle,inner sep=1pt] at (MID/TOP) {};
  \node[fill,circle,inner sep=1pt] at (MID/BOT) {};
  \node[fill,circle,inner sep=1pt] at (HIND/TOP) {};
  \node[fill,circle,inner sep=1pt] at (HIND/BOT) {};
  \draw[rounded corners=10pt] 
                             (HIND/TOP) --
                             (MID/TOP)  --
                             node [pos=0.25] (WINDOW/TOP/N) {}
                             node [pos=0.50] (WINDOW/BOT/N) {}
                             (NOSE/TIP) -- 
                             (MID/BOT)  --
                             (HIND/BOT);
  \coordinate (WINDOW/TOP) at (WINDOW/TOP/N.center);
  \coordinate (WINDOW/BOT) at (WINDOW/BOT/N.center);

%start of modifications
   \coordinate (WINDOW/RIG/T) at ($(TAIL)!(WINDOW/TOP)!90:(NOSE)$);
   \coordinate (WINDOW/RIG)   at ($(WINDOW/TOP)!(WINDOW/BOT)!90:(WINDOW/RIG/T)$);
   \node[fill,circle,inner sep=1pt] at (WINDOW/RIG/T) {};% way down near the tail
   \draw[blue] (WINDOW/TOP) -- (WINDOW/RIG) -- (WINDOW/BOT);
%end of modifications

   \draw[red] (TAIL) -- (NOSE);

\end{tikzpicture}

\end{document}

Antwort3

Um zu zeigen, was ich mit dem flachen Zeichnen und Drehen gemeint habe:

\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{calc}
\pagestyle{empty}

\newlength{\myx}
\newlength{\myy}

\begin{document}
\def\aeBodyRadius{0.25cm}
\def\aeBodyNoseDistance{0.21cm}
\begin{tikzpicture}[x=5cm,y=5cm,scale=3,every node={transform shape},rotate=30]% changed here
  \coordinate (TAIL) at (0,0);
  \coordinate (NOSE) at ($(TAIL)+(1,0)$);% changed here
  \coordinate (MID)     at ($(TAIL)!0.75!(NOSE)$);
  \coordinate (MID/TOP) at ($(MID)!\aeBodyRadius!90:(NOSE)$);
  \coordinate (MID/BOT) at ($(MID)!\aeBodyRadius!-90:(NOSE)$);
  \coordinate (NOSE/TIP) at ($(NOSE)!\aeBodyNoseDistance!90:(MID)$);
  \coordinate (HIND/TOP) at ($(TAIL)!\aeBodyRadius!90:(NOSE)$);
  \coordinate (HIND/BOT) at ($(TAIL)!\aeBodyRadius!-90:(NOSE)$);
  \node[fill,circle,inner sep=1pt] at (MID/TOP) {};
  \node[fill,circle,inner sep=1pt] at (MID/BOT) {};
  \node[fill,circle,inner sep=1pt] at (HIND/TOP) {};
  \node[fill,circle,inner sep=1pt] at (HIND/BOT) {};
  \draw[rounded corners=10pt] 
                             (HIND/TOP) --
                             (MID/TOP)  --
                             node [pos=0.25] (WINDOW/TOP/N) {}
                             node [pos=0.50] (WINDOW/BOT/N) {}
                             (NOSE/TIP) -- 
                             (MID/BOT)  --
                             (HIND/BOT);
  \coordinate (WINDOW/TOP) at (WINDOW/TOP/N.center);
  \coordinate (WINDOW/BOT) at (WINDOW/BOT/N.center);

  \node[fill,circle,inner sep=1pt] at (NOSE) {};
  \node[fill,circle,inner sep=1pt] at (TAIL) {};
  \coordinate (WINDOW/RIG/T) at ($(TAIL)!(WINDOW/TOP)!(NOSE)$);
  \coordinate (WINDOW/RIG)   at ($(WINDOW/TOP)!(WINDOW/BOT)!(WINDOW/RIG/T)$);
  \node[fill,circle,inner sep=1pt] at (WINDOW/RIG/T) {};
  \draw[blue] (WINDOW/TOP) -- (WINDOW/RIG) -- (WINDOW/BOT);
  \draw[red] (TAIL) -- (NOSE);

\end{tikzpicture}

\end{document}

gedreht

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