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更改三维饼图中点的颜色

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更改三维饼图中点的颜色

我需要改变这些点的颜色，如附图所示： 图片

平均能量损失：

\documentclass[tikz,border=3mm]{standalone}
\usetikzlibrary{fadings}
\definecolor{strangegreen}{RGB}{15,111,83}
\tikzset{pics/wedge/.style={code={%
  \tikzset{wedge/.cd,#1}
  \def\kvw##1{\pgfkeysvalueof{/tikz/wedge/##1}}
  \pgfmathtruncatemacro{\itest}{3*(1+sign(sin(\kvw{alpha})))+1+sign(sin(\kvw{beta}))}
  \ifcase\itest
    %0: alpha>180,beta>180
       \draw[fill=\kvw{color},very thin]
                       (\kvw{alpha}:\kvw{radius}) 
                       -- ++(0,-\kvw{h}) arc(\kvw{alpha}:\kvw{beta}:\kvw{radius}) 
                       -- ++(0,\kvw{h})  arc(\kvw{beta}:\kvw{alpha}:\kvw{radius});
   \or
    %1: alpha>180,beta=0,180                       
       \draw[fill=\kvw{color},very thin]
                       (\kvw{alpha}:\kvw{radius}) 
                       -- ++(0,-\kvw{h}) arc(\kvw{alpha}:\kvw{beta}:\kvw{radius}) 
                       -- ++(0,\kvw{h})  arc(\kvw{beta}:\kvw{alpha}:\kvw{radius});
   \or
    %2: alpha>180,beta<180                     
       \draw[fill=\kvw{color},very thin]
                       (\kvw{alpha}:\kvw{radius}) 
                       -- ++(0,-\kvw{h}) arc(\kvw{alpha}:360:\kvw{radius}) 
                       -- ++(0,\kvw{h})  arc(360:\kvw{alpha}:\kvw{radius});
   \or
    %3: alpha=0,180,beta>180                       
       \draw[fill=\kvw{color},very thin]
                       (180:\kvw{radius}) 
                       -- ++(0,-\kvw{h}) arc(180:\kvw{beta}:\kvw{radius}) 
                       -- ++(0,\kvw{h})  arc(\kvw{beta}:180:\kvw{radius});
   \or
    %4: alpha=0,180,beta=0,180                     
       \draw[fill=\kvw{color},very thin]
                       (180:\kvw{radius}) 
                       -- ++(0,-\kvw{h}) arc(180:0:\kvw{radius}) 
                       -- ++(0,\kvw{h})  arc(0:180:\kvw{radius});
   \or
    %5: alpha=0,180,beta=<180                      
   \or
    %6: alpha<180,beta=>180                    
       \draw[fill=\kvw{color},very thin]
                       (180:\kvw{radius}) 
                       -- ++(0,-\kvw{h}) arc(180:\kvw{beta}:\kvw{radius}) 
                       -- ++(0,\kvw{h})  arc(\kvw{beta}:180:\kvw{radius});
   \or
    %7: alpha<180,beta=0,180
    \pgfmathtruncatemacro{\ibeta}{sign(cos(\kvw{beta}))}
    \ifnum\ibeta=1
        \draw[fill=\kvw{color},very thin] 
                        (180:\kvw{radius}) 
                        -- ++(0,-\kvw{h}) arc(180:360:\kvw{radius}) 
                        -- ++(0,\kvw{h})  arc(360:180:\kvw{radius});
    \fi
   \or
    %8: alpha<180,beta<180
    \pgfmathtruncatemacro{\ibeta}{sign(sin(\kvw{alpha})-sin(\kvw{beta}))}
    \ifnum\ibeta=1
       \draw[fill=\kvw{color},very thin]
                        (180:\kvw{radius}) 
                        -- ++(0,-\kvw{h}) arc(180:360:\kvw{radius}) 
                        -- ++(0,\kvw{h})  arc(360:180:\kvw{radius});
    \fi
  \fi
  \path[fill=\kvw{color},draw=black] (0,0)--
  (\kvw{alpha}:\kvw{radius})  arc(\kvw{alpha}:\kvw{beta}:\kvw{radius})
                                     --cycle;
}},
wedge/.cd,alpha/.initial=0,beta/.initial=0,%beta > alpha!
color/.initial=blue,
mix color/.initial=gray,radius/.initial=3cm,h/.initial=1cm,
/tikz/.cd,
pics/3d pie chart/.style={code={
  \def\kvw##1{\pgfkeysvalueof{/tikz/3d pie chart/##1}}
  \begin{scope}[yscale=\kvw{aspect},transform shape]
    \path[preaction={fill=black,opacity=.8,
           path fading=circle with fuzzy edge 20 percent}] 
           (0,-\kvw{h}-\kvw{radius}/4.5) 
           circle[radius=1.05*\kvw{radius}];
    \pgfmathsetmacro{\mysum}{0}      
    \foreach \XX/\ZZ  in {#1}  
    {\pgfmathsetmacro{\mysum}{\mysum+\XX}
     \xdef\mysum{\mysum}}
    \pgfmathsetmacro{\myangle}{\kvw{alpha0}}
    \foreach \XX/\ZZ [count=\YY starting from 0,remember=\myangle as \myangle] in {#1} 
    {\pgfmathsetmacro{\myangleB}{\myangle+\XX*(360/\mysum)}
     \pgfmathsetmacro{\mycolor}{{\kvw{colors}}[\YY]}
     \pic{wedge={alpha=\myangle,beta=\myangleB,color=\mycolor,
        radius/.expanded=\kvw{radius},
        h/.expanded=\kvw{h}
        }};
     \fill (\myangle/2+\myangleB/2:\kvw{radius}*\kvw{eccentricity})
      coordinate (\kvw{cname}-\YY) circle[radius=2pt];
     \pgfmathtruncatemacro{\mysign}{sign(cos(\myangle/2+\myangleB/2))} 
     \draw[thick] (\kvw{cname}-\YY)  -- 
      ++(\myangle/2+\myangleB/2:\kvw{armA}) -- ++ 
      (\mysign*3,0)
      \ifnum\mysign<0
        node[above right,transform shape=false]{\ZZ}
        node[below right,transform shape=false]{\XX\%}
      \else
        node[above left,transform shape=false]{\ZZ}
        node[below left,transform shape=false]{\XX\%}
      \fi;    
     \pgfmathsetmacro{\myangle}{\myangleB}
    }
    \shade[left color=black,middle color=white,right color=gray,opacity=0.4]
                          (180:\kvw{radius}) 
                          -- ++(0,-\kvw{h}) arc(180:360:\kvw{radius}) 
                          -- ++(0,\kvw{h})  arc(360:180:\kvw{radius});
  \end{scope}                       
}},
3d pie chart/.cd,
colors/.initial={"blue","red","orange","green","yellow"},
radius/.initial=3cm,h/.initial=1cm,alpha0/.initial=0,
aspect/.initial=0.6,eccentricity/.initial=0.7,cname/.initial=c,
armA/.initial=2cm,armB/.initial=3cm
}
\begin{document}
\begin{tikzpicture}[font=\sffamily]
 \path[3d pie chart/.cd,radius=4cm,h=1.5cm,colors={"yellow","strangegreen"}] pic{3d pie chart={36/Nuts,64/Honey}};
 \path[xshift=12cm,3d pie chart/.cd,radius=4cm,h=1.5cm,alpha0=45,
 colors={"green","yellow","strangegreen"}] 
 pic{3d pie chart={13/Nuts,5/Honey,82/Beer}};
\end{tikzpicture}
\end{document}

答案1

在 OP 的例子中搜索circle[radius=2pt]，你会发现

\fill (\myangle/2+\myangleB/2:\kvw{radius}*\kvw{eccentricity})
      coordinate (\kvw{cname}-\YY) circle[radius=2pt];

然后只需将其更改为\fill[red] ...;，点就会用红色填充。

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