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TikZ：一对指南针渲染比赛

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TikZ：一对指南针渲染比赛

我根据这个答案制作了指南针的侧视图铅笔、尺子和圆规的符号

我想从上面看一看。

在此处输入图片描述

\documentclass[border=2pt]{standalone}

\usepackage{tikz,xparse}

\newcommand{\NodeAngle}[2]{%
    %\pgfextra{
        \pgfmathanglebetweenpoints%
            {\pgfpointanchor{#1}{center}}%
            {\pgfpointanchor{#2}{center}}%
            \global\let\MyAngle\pgfmathresult
    }%}

    % #1 premier point              ---- Distance entre 2 nodes ----
    % #2 second point
    % On récupère le résultat dans \MyDist
\makeatletter
\newcommand{\NodeDist}[2]{%
    \pgfpointdiff{\pgfpointanchor{#1}{center}}
                 {\pgfpointanchor{#2}{center}}
    % no need to use a new dimen
    \pgf@xa=\pgf@x
    \pgf@ya=\pgf@y
    % to convert from pt to cm   
    \pgfmathparse{veclen(\pgf@xa,\pgf@ya)/28.45274}
    \global\let\MyDist\pgfmathresult % we need a global macro   
}
\makeatother

% ######################
%     Dessin crayon    #
% ######################

\newcommand{\Crayon}[1]{%
    \begin{scope}[scale=.7,#1]
    \fill[gray!60] (-.2,4.8) -- (.2,4.8)
                -- (.2,.8) --(.1,.65)
                -- (0,.8) -- (-.1,.66)
                -- (-.2,.8) -- cycle ;
    \draw[color=white] (0,4.8) -- (0,.8 );
    \fill[black] (-.2,4.3) -- (0,4.27)
                -- (.2,4.3) -- (.2,4.8) arc(30:150:0.23cm) ;
    \fill[brown!50] (-.2,.8)
        -- (0,0) node[coordinate,pos=0.75](a){}
        -- (.2,.8) node[coordinate,pos=0.25](b){}
        -- (.1,.65) -- (0,.8) -- (-.1,.66) -- cycle;
    \fill[gray] (a) -- (0,0) -- (b) -- cycle;
    \end{scope}
}



% ######################
%   Dessin du compas   #
% ######################

\NewDocumentCommand{\Compas}{smm}{%

    \IfBooleanTF{#1}{%
    % with *
    % keep distance between extemities
    }{%
    % without *
    % calulation of the distance between extemities
    \NodeDist{#2}{#3}
    }

    \NodeAngle{#2}{#3}

    \def\L{6} % taille des branches du compas

    % calcul de l'angle de l'ouverture
    \pgfmathsetmacro{\AngleCP}{asin(\MyDist/(2*\L))}

    \begin{scope}[shift=(#2)]
    \begin{scope}[%
        join=round,
        rotate=\MyAngle,
        shift=(270-\AngleCP:-\L)
        ]

    % branche pointe sèche
    \draw[rotate=-\AngleCP,fill=gray!80]
        (0,0)--(0,-\L)--(-.2,-\L+.8)--(-.2,0)--cycle ;
    \draw[rotate=-\AngleCP,fill=gray!05]
        (0,-\L+.8)--(0,-\L)--(-.2,-\L+.8)--cycle ;

    % branche crayon
    \draw[rotate=\AngleCP,fill=gray!80]
        (0,0)--(0,-\L)--(.2,-\L+.8)--(.2,0)--cycle ;

    \begin{scope}[rotate=\AngleCP,shift={(0,-\L)}]
    \Crayon{rotate=-12}
    \draw[fill=gray!25] (\L/30,\L/5) circle (\L/36) ;
    \fill[gray!5] (\L/30,\L/5)
            -- ++(30:\L/36) arc (30:45:\L/36) -- cycle ;
    \fill[gray!5] (\L/30,\L/5)
            -- ++(210:\L/36) arc (210:225:\L/36) ;
    \filldraw (\L/30,\L/5) circle (.02) ;
    \end{scope}

    % haut du compas
    \draw[fill=gray!80] (-.1,0) rectangle (.1,.7) ;
    \draw[fill=gray!25] (0,0) circle (.25) ;
    \fill[gray!5] (0,0) -- (30:.25) arc (30:45:.25) -- cycle ;
    \fill[gray!5,rotate=180] (0,0) -- (30:.25) arc (30:45:.25) -- cycle ;
    \filldraw (0,0) circle (.05) ;
    \end{scope}
    \end{scope}
}


\begin{document}

\begin{tikzpicture}

\coordinate (A) at (0,0) ;
\coordinate (B) at (3,2) ;

\Compas{A}{B}

\end{tikzpicture}

\end{document}

答案1

在此处输入图片描述

在此处输入图片描述

\documentclass[border=2pt]{standalone}

\usepackage{tikz,xparse}
\usetikzlibrary{calc}

\newcommand{\NodeAngle}[2]{%
    %\pgfextra{
        \pgfmathanglebetweenpoints%
            {\pgfpointanchor{#1}{center}}%
            {\pgfpointanchor{#2}{center}}%
            \global\let\MyAngle\pgfmathresult
    }%}

    % #1 premier point              ---- Distance entre 2 nodes ----
    % #2 second point
    % On récupère le résultat dans \MyDist
\makeatletter
\newcommand{\NodeDist}[2]{%
    \pgfpointdiff{\pgfpointanchor{#1}{center}}
                 {\pgfpointanchor{#2}{center}}
    % no need to use a new dimen
    \pgf@xa=\pgf@x
    \pgf@ya=\pgf@y
    % to convert from pt to cm   
    \pgfmathparse{veclen(\pgf@xa,\pgf@ya)/28.45274}
    \global\let\MyDist\pgfmathresult % we need a global macro   
}
\makeatother

% ######################
%     Dessin crayon    #
% ######################

\newcommand{\Crayon}[1]{%
    \begin{scope}[scale=.7,#1]
    % Dessin de bois
    \fill[gray!60] (-.2,4.8) -- (.2,4.8)
                -- (.2,.8) --(.1,.65)
                -- (0,.8) -- (-.1,.66)
                -- (-.2,.8) -- cycle ;
    \draw[color=white] (0,4.8) -- (0,.8 );
    \fill[black] (-.2,4.3) -- (0,4.27)
                -- (.2,4.3) -- (.2,4.8) arc(30:150:0.23cm) ;

    % pointe taillée
    \fill[brown!50] (-.2,.8)
        -- (0,0) node[coordinate,pos=0.75](a){}
        -- (.2,.8) node[coordinate,pos=0.25](b){}
        -- (.1,.65) -- (0,.8) -- (-.1,.66) -- cycle;
    \fill[gray] (a) -- (0,0) -- (b) -- cycle;
    \end{scope}
}

\newcommand{\PointeCr}[1]{% pour le compas vu de haut
    \begin{scope}[scale=.7,#1]
    % pointe taillée
    \fill[brown!50] (-.2,.8)
        -- (0,0) node[coordinate,pos=0.75](a){}
        -- (.2,.8) node[coordinate,pos=0.25](b){}
        -- (.1,.65) -- (0,.8) -- (-.1,.66) -- cycle;
    \fill[gray] (a) -- (0,0) -- (b) -- cycle;
    \end{scope}
}


% ######################
%   Dessin du compas   #
% ######################

\NewDocumentCommand{\Compas}{smm}{%

    \IfBooleanTF{#1}{%
    % with *
    % keep distance between extemities
    }{%
    % without *
    % calulation of the distance between extremities
    \NodeDist{#2}{#3}
    }

    \NodeAngle{#2}{#3}

    \def\L{6} % taille des branches du compas

    % calcul de l'angle de l'ouverture
    \pgfmathsetmacro{\AngleCP}{asin(\MyDist/(2*\L))}

    \begin{scope}[shift=(#2)]
    \begin{scope}[%
        join=round,
        rotate=\MyAngle,
        shift=(270-\AngleCP:-\L)
        ]

    % branche pointe sèche
    \draw[rotate=-\AngleCP,fill=gray!80]
        (0,0)--(0,-\L)--(-.2,-\L+.8)--(-.2,0)--cycle ;
    \draw[rotate=-\AngleCP,fill=gray!05]
        (0,-\L+.8)--(0,-\L)--(-.2,-\L+.8)--cycle ;

    % branche crayon
    \draw[rotate=\AngleCP,fill=gray!80]
        (0,0)--(0,-\L)--(.2,-\L+.8)--(.2,0)--cycle ;

    \begin{scope}[rotate=\AngleCP,shift={(0,-\L)}]
    \Crayon{rotate=-12}
    \draw[fill=gray!25] (\L/30,\L/5) circle (\L/36) ;
    \fill[gray!5] (\L/30,\L/5)
            -- ++(30:\L/36) arc (30:45:\L/36) -- cycle ;
    \fill[gray!5] (\L/30,\L/5)
            -- ++(210:\L/36) arc (210:225:\L/36) ;
    \filldraw (\L/30,\L/5) circle (.02) ;
    \end{scope}

    % haut du compas
    \draw[fill=gray!80] (-.1,0) rectangle (.1,.7) ;
    \draw[fill=gray!25] (0,0) circle (.25) ;
    \fill[gray!5] (0,0) -- (30:.25) arc (30:45:.25) -- cycle ;
    \fill[gray!5,rotate=180]
        (0,0) -- (30:.25) arc (30:45:.25) -- cycle ;
    \filldraw (0,0) circle (.05) ;
    \end{scope}
    \end{scope}
}


\NewDocumentCommand{\CompasH}{smm}{%

    \IfBooleanTF{#1}{%
    % with *
    % keep distance between extemities
    }{%
    % without *
    % calulation of the distance between extremities
    \NodeDist{#2}{#3}
    }

    \NodeAngle{#2}{#3}

\def\L{6} 
\pgfmathsetmacro{\Scale}{\MyDist/2/\L}

\begin{scope}[%
    join=round,
    shift=($(#2)!.5!(#3)$),
    rotate=\MyAngle]

\begin{scope}[xscale=\Scale]
    % branche pointe sèche
    \draw[rotate=-90,fill=gray!80]
        (.1,\L-1) rectangle (-.1,-\L+1) ;
    \draw[rotate=-90,fill=gray!05]
        (.1,-\L+1)--(0,-\L)--(-.1,-\L+1)--cycle ;
\end{scope}

\draw[fill=gray!25,rounded corners=2pt]
    (-.4,-.14) rectangle(.4,.14) ;

\draw[fill=gray!25,rounded corners=2pt]
    (-.3,-.14) rectangle(.3,.14) ;

\begin{scope}[xscale=\Scale]

    \begin{scope}[shift={(\L,0)}]
        \clip (-1.4,-.17) rectangle (-12,.17) ;
        \Crayon{rotate=90,yscale=1.2}
    \end{scope}

    \begin{scope}[shift={(\L,0)}]
        \clip (-1.4,-.17) rectangle (0.1,.17) ;
        \Crayon{rotate=90,yscale=2}
    \end{scope}

    \draw[draw=gray!50,
        ultra thin,
        fill=gray!15,
        rounded corners=2pt]
        (4.25,-.17) rectangle (4.85,.17) ;

    \draw[ultra thick,
        yshift=-.5pt,
        black!80,
        line cap=round]
        (4.35,-.17)--(4.75,-.17) ;
\end{scope}

    \filldraw[gray!50!black] (0,0) circle (.08) ;
    \fill[black] (0,0) circle (.2pt) ;

\end{scope}

}

\begin{document}

\begin{tikzpicture}
\coordinate (A) at (0,0) ;
\coordinate (B) at (2,0) ;

\Compas{A}{B}
\CompasH{A}{B}

\end{tikzpicture}

\end{document}

答案2

您可以将此片段添加到您当前的 MWE，但为了看起来逼真，您必须从头开始并绘制 3D 指南针。

\begin{tikzpicture}

    \coordinate (A) at (0,0) ;
    \coordinate (B) at (3,0) ;

    \pgfmathparse{cos(80)}% foreshorten image by 80 degrees
    \let\temp=\pgfmathresult% and don't own a decent calculator

    \begin{scope}[yscale=\temp]
    \Compas{A}{B}
    \end{scope}

    \end{tikzpicture}

我开始研究 3D 指南针，但只做了这么多。事实证明，在 3D 中绘制圆圈可能会很复杂。

\documentclass[border=2pt]{standalone}
\usepackage[svgnames]{xcolor}
\usepackage{tikz}
\usetikzlibrary{calc,intersections,arrows.meta}
\usepackage{tikz-3dplot}

\begin{document}
\Large
\tdplotsetmaincoords{60}{30}
\begin{tikzpicture}[scale=1in,tdplot_main_coords]
\draw[thick] (0,0,0) circle (.1);
\draw[thick,-latex] (0,0,0) -- (.1,0,0) node[right] {x}
 (0,0,0) -- (0,.1,0) node[right] {y}
 (0,0,0) -- (0,0,.1) node[right] {z};
\tdplotsetrotatedcoords{0}{90}{0}
\begin{scope}[tdplot_rotated_coords]
\draw[red,thick] (0,0,0) circle (.1);
\draw[red,thick,-latex] (0,0,0) -- (.1,0,0) node[above] {x}
 (0,0,0) -- (0,.1,0) node[above] {y}
 (0,0,0) -- (0,0,.1) node[above] {z};
\end{scope}
\tdplotsetrotatedcoords{90}{90}{-90}
\begin{scope}[tdplot_rotated_coords]
\draw[green,thick] (0,0,0) circle (.1);
\draw[green,thick,-latex] (0,0,0) -- (.1,0,0) node[left] {x}
 (0,0,0) -- (0,.1,0) node[left] {y}
 (0,0,0) -- (0,0,.1) node[left] {z};
\end{scope}
\begin{scope}[tdplot_screen_coords]
\draw[thick,blue] (0,0) circle (.1);
\end{scope}
\end{tikzpicture}

\end{document}

画圆圈

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