[Tex/LaTex] Radial Labels on Mindmap – Part II

mindmapsrotatingtikz-pgf

This is a continuation from Part I, where a solution was provided to create rotating labels in a radial fashion.

enter image description here

Closeup of the output looking like this:

Solution

I was able to improve the solution, preventing upside-down labels as they rotated through 360 degrees, with the following code, the difference being the 'ifthenelse' conditional clause…

\makeatletter
\newcommand*{\rotateme}[1]{%
    \pgfmathparse{
        (\tikz@grow@circle@from@start-(\pgfkeysvalueof{/tikz/sibling angle})*(\tikznumberofcurrentchild-1))
    }%
    \pgfmathparse{
        ifthenelse(\pgfmathresult > 90 && \pgfmathresult < 270,\pgfmathresult + 180,\pgfmathresult)  
    }
    \rotatebox[origin=c]{\pgfmathresult}{#1}%
}
\makeatother

What I would like to do now, is extend the radial nature of this topic, for the case where labels are quite long. Replacing the circular concept nodes, with ellipses or rectangles with rounded corners, which are also rotated. Note the following current output, the error is quite pronounced.

Long Don

My skills with tikz are quite poor, relatively speaking, is anyone able to assist here?

The full working example stands as follows:

\documentclass[tikz]{standalone}
\usetikzlibrary{mindmap}
\newsavebox\rotatenodebox
\makeatletter
\newcommand*{\rotateme}[1]{%
    \pgfmathparse{
        (\tikz@grow@circle@from@start-(\pgfkeysvalueof{/tikz/sibling angle})*(\tikznumberofcurrentchild-1))
    }%
    \pgfmathparse{
        ifthenelse(\pgfmathresult > 90 && \pgfmathresult < 270,\pgfmathresult + 180,\pgfmathresult)  
    }
    \rotatebox[origin=c]{\pgfmathresult}{#1}%
}
\makeatother

\tikzset{
    conc3/.style={concept,scale=.5},
    rot/.style={
        conc3,
        execute at begin node={\begingroup\begin{lrbox}{\rotatenodebox}},
        execute at end   node={\end{lrbox}\rotateme{\usebox\rotatenodebox}\endgroup},
    }
}
\tikzset{
    conc4/.style={concept,scale=0.75},
    rotL/.style={
        conc4
    }
}
\begin{document}
\begin{tikzpicture}
  \path[small mindmap,concept,text=white]
    node[concept] {Bla} [clockwise from=345]
    child[concept color=red,text=black]{
      node[concept]at(1,0){Bla Bla}[clockwise from=90]
      child[concept color=red!95!black,text=black]{
        node[rotL]{A}[clockwise from = 120]
            child {node[rot] {A.A}}
            child {node[rot] {A.B}}
            child {node[rot] {A.C}}
      }
      child[concept color=red!75!black,text=white,grow=50]{
        node[rotL]{B}[clockwise from = 80]
            child {node[rot] {B.A}}
            child {node[rot] {B.B}}
            child {node[rot] {B.C}}
      }
      child[concept color=red!50!black,text=white ,grow=10]{
        node[rotL]{C}[clockwise from = 40]
            child {node[rot] {C.A}}
            child {node[rot] {C.B}}
            child {node[rot] {C.C}}
      }
      child[concept color=red!25!black,text=white,grow=-30]{
        node[rotL]{D}[clockwise from = 0]
            child {node[rot] {D.A}}
            child {node[rot] {D.B}}
            child {node[rot] {D.C}}
      }
      child[concept color=red!10!black,text=white,grow=-70]{
        node[rotL]{D}[clockwise from = -40]
            child {node[rot] {D.A}}
            child {node[rot] {D.B}}
            child {node[rot] {D.C}}
      }
    }
    child[concept color=green,text=black, grow=195]{
      node[concept]{Bla Bla}[clockwise from=80]
      child[concept color=green!10!black,text=white]{
        node[rotL]{Bla}[clockwise from = 110]
            child {node[rot] {A.A}}
            child {node[rot] {A.B}}
            child {node[rot] {A.C}}
      }
      child[concept color=green!25!black,text=white,grow=120]{
        node[rotL]{Bla}[clockwise from = 150]
            child {node[rot] {A.A}}
            child {node[rot] {A.B}}
            child {node[rot] {A.C}}
      }
      child[concept color=green!50!black,text=white,grow=160]{
        node[rotL]{Bla}[clockwise from = 190]
            child {node[rot] {B.A}}
            child {node[rot] {B.B}}
            child {node[rot] {B.C}}
      }
      child[concept color=green!75!black,text=white ,grow=200]{
        node[rotL]{Bla}[clockwise from = 230]
            child {node[rot] {C.A}}
            child {node[rot] {C.B}}
            child {node[rot] {C.C}}
      }
      child[concept color=green!95!black,text=black,grow=240]{
        node[rotL]{Bla}[clockwise from = 270]
            child {node[rot] {D.A}}
            child {node[rot] {D.B}}
            child {node[rot] {D.C}}
      }
    }
    child[concept color=orange,text=black, grow = 270] {
      node[concept]at(-1.5,-2.5){Bla Bla}[clockwise from=360]
        child[concept color=orange!95!black]{
            node[rotL]{Bla}[clockwise from = 30]
                child {node[rot] {A.A}}
                child {node[rot] {A.B}}
                child {node[rot] {A.C}}
        }
        child[concept color=orange!75!black, grow = 320]{
            node[rotL]{Bla}[clockwise from =350]
                child {node[rot] {In Honour of the Great Long Don Silver}}
                child {node[rot] {In Honour of the Great Long Don Silver}}
                child {node[rot] {In Honour of the Great Long Don Silver}}
        }
        child[concept color=orange!50!black, text=white, grow=280]{
            node[rotL]{Bla}[clockwise from =310]
                child {node[rot] {C.A}}
                child {node[rot] {C.B}}
                child {node[rot] {C.C}}
        }
        child[concept color=orange!25!black, text=white, grow=240]{
            node[rotL]{Bla}[clockwise from =270]
                child {node[rot] {D.A}}
                child {node[rot] {D.B}}
                child {node[rot] {D.C}}
        }
        child[concept color=orange!10!black, text=white, grow=200]{
            node[rotL]{Bla}[clockwise from =230]
                child {node[rot] {E.A}}
                child {node[rot] {E.B}}
                child {node[rot] {E.C}}
        }
    };
\end{tikzpicture}
\end{document}

Best Answer

This answer is similar to what Qrrbrbbirbel did with the node text rotation. But instead of rotating the node text, I modified the edge from parent path such that more information is squeezed in.

The nodes that are needed to be rotated need the mind your rotate key.

First the code and the result,

\documentclass[tikz]{standalone}
\usetikzlibrary{mindmap}
\def\myrotangle{0}
\makeatletter
\tikzset{tikz@concept@setting/.style={edge from parent path={
        (\tikzparentnode) 
        \pgfextra{
        \pgfpointdiff{%}
            \pgfpointanchor{\tikzchildnode}{north}
        }
        {%}
            \pgfpointanchor{\tikzchildnode}{south}
        }
        \pgfmathsetmacro\mychildsize{veclen(\pgf@x,\pgf@y)}
        \pgfpathmoveto{\pgfpointanchor{\tikzchildnode}{center}}
        \pgfset{minimum size=\mychildsize}
        \pgfsetlinewidth{1mm}
        \pgfnode{circle}{center}{}{\tikzchildnode-temp}{\pgfusepath{discard}}
             \pgfpointdiff{%}
                 \pgfpointanchor{\tikzchildnode}{center}
                }
                {%}
                 \pgfpointanchor{\tikzparentnode}{center}
                }
            \pgfmathparse{atan2(\pgf@x,\pgf@y)}%
            \xdef\myrotangle{\pgfmathresult}
            \pgfmathparse{((\myrotangle>90+\pgfkeysvalueof{/tikz/sibling angle})&&(\myrotangle<270+\pgfkeysvalueof{/tikz/sibling angle})?(\myrotangle + 180):(\myrotangle))}
            \xdef\myrotangle{\pgfmathresult}
            }
        to [circle connection bar] (\tikzchildnode-temp)
        }
    }
}

\makeatother


\tikzset{mind your rotate/.style={
    rotate=\myrotangle-\pgfkeysvalueof{/tikz/sibling angle}
    }
}

\begin{document}
\begin{tikzpicture}
  \path[small mindmap,concept,text=white]
    node[concept] (Bla) {Bla} [clockwise from=-15]
    child[concept color=red,text=black]{
      node[concept]at(1,0){Bla Bla}[clockwise from=90]      {}
    }
    child[concept color=green,text=black, grow=195]{
      node[concept]{Bla Bla}[clockwise from=80]
    }
    child[concept color=orange,text=black, grow = -90] {
      node[concept]at(-1.5,-2.5){Bla Bla}[clockwise from=10]
        child[concept color=orange!95!black]{
            node[concept]{Bla}[clockwise from = 40]
                child {node[concept,scale=0.5,mind your rotate] {A.A}}
                child {node[concept,scale=0.5] {A.B}}
                child {node[concept,scale=0.5] {A.C}}
        }
        child[concept color=orange!75!black, grow = -30]{
            node[concept]{Bla}[clockwise from =0]
                child {node[concept,scale=0.5] {B.A}}
                child {node[concept,scale=0.5,mind your rotate] {B.B}}
                child {node[concept,scale=0.5,mind your rotate] {B.C}}
        }
        child[concept color=orange!50!black, text=white, grow=-70]{
            node[concept]{Bla}[clockwise from =-40]
                child {node[concept,scale=0.5] {C.A}}
                child {node[concept,scale=0.5,mind your rotate] {C.B Some important remark that should cause a line break}}
                child {node[concept,scale=0.5,mind your rotate] {C.C}}
        }
        child[concept color=orange!25!black, text=white, grow=-110]{
            node[concept]{Bla}[clockwise from =-80]
                child {node[concept,scale=0.5] {D.A}}
                child {node[concept,scale=0.5,mind your rotate] {D.B Some important remark that should cause a line break}}
                child {node[concept,scale=0.5,mind your rotate] {D.C Some important remark that should cause a line break}}
        }
        child[concept color=orange!10!black, text=white, grow=-150]{
            node[concept]{Bla}[clockwise from =-120]
                child {node[concept,scale=0.5] {E.A}}
                child {node[concept,scale=0.5,mind your rotate] {E.B Some important remark that should cause a line break 
                                                                     and some more text which is tough to come up with 
                                                                     on the fly}}
                child {node[concept,scale=0.5] {E.C}}
        }
    }    
   ;

\draw[yellow] (Bla-3-2-2.north) -- (Bla-3-2-2.south);

\end{tikzpicture}
\end{document}

enter image description here

What is happening in a nutshell is; the regular parent - child node names are caught. Using their coordinates a rotation angle is computed. Also the size of the child is measured(roughly!). Then a temporary non-rotated node is placed on top of the child so that the connection bar doesn't get confused.

There are a few points I've left out;

The size measurement of the child is pretty primitive. No line width, inner sep is taken into account but I think doing it manually leads to smoother connections. (The measured value is shown with yellow line)
The rotation correction code is done directly copy/pasting so it might need another check. I feel that I've left something out but didn't test it extensively.
Overall, I don't think this can work with other node shapes since it would be a really tough code to come up with for the connection transition.

1. The Mathematical Problem

We have to calculate the amount of rotation.

The _^counterclockwise from argument is saved internally in \tikz@grow@circle@from@start.

For every child the amount of /tikz/sibling angle get added (counterclockwise) or subtracted (clockwise). The number of the child is saved in \tikznumberofcurrentchild.

For the orange children which are all placed in a clockwise matter the angle the text must be rotated is:

  \tikz@grow@circle@from@start
- (\pgfkeysvalueof{/tikz/sibling angle}) * (\tikznumberofcurrentchild - 1)

¿zʞıʇ

If a node’s content shouldn’t be upside down the formula has to be adjusted:

(
     \tikz@grow@circle@from@start
     - (\pgfkeysvalueof{/tikz/sibling angle}) * (\tikznumberofcurrentchild - 1)
) + 180 * (
      cos(
            \tikz@grow@circle@from@start
          - (\pgfkeysvalueof{/tikz/sibling angle})+(\tikznumberofcurrentchild-1)
      )
      < 0
)

2. The Rotation Problem

Great, so an easy

rotation =   \tikz@grow@circle@from@start
           - (\pgfkeysvalueof{/tikz/sibling angle}) * (\tikznumberofcurrentchild - 1)

should do, right?

Nope:

enter image description here

The whole node gets transformed (in this case: rotated) which means that all anchor nodes are rotated, too. And this confuses the calculation of the circle connection bar decoration. The more we rotate a child the more the connection bar gets twisted.

We surely could adjust the code for the circle connection bar decoration, but that’s a lot of code!

It would be much easier to just rotate the text itself.
With the help of graphicx’s \rotatebox macro this can be easily done:

\newcommand*{\rotateme}[1]{%
    \pgfmathparse{
        \tikz@grow@circle@from@start-
        (\pgfkeysvalueof{/tikz/sibling angle})*(\tikznumberofcurrentchild-1)
    }%
    \rotatebox[origin=c]{\pgfmathresult}{#1}%
}

2½. The Node Text Problem

Do you want to edit every node that should get rotated and add the \rotateme macro?
I didn’t think so!

My solution collects all the node’s text with the help of

execute at begin node,
execute at and node, and
the lrbox environment which saves the node’s text in a box called \rotatenodebox.

This box is then given to the already-mentioned \rotateme macro.

\tikzset{
    conc3/.style={concept,scale=.5},
    orange/.style={
        conc3,
        execute at begin node={\begingroup\begin{lrbox}{\rotatenodebox}},
        execute at end node={\end{lrbox}\rotateme{\usebox\rotatenodebox}\endgroup},
    }
}

Code

\documentclass[tikz]{standalone}
\usetikzlibrary{mindmap}
\newsavebox\rotatenodebox
\makeatletter
\newcommand*{\rotateme}[1]{%
    \pgfmathparse{
        \tikz@grow@circle@from@start-
        (\pgfkeysvalueof{/tikz/sibling angle})*(\tikznumberofcurrentchild-1)
    }%
    \rotatebox[origin=c]{\pgfmathresult}{#1}%
}
\makeatother

\tikzset{
    conc3/.style={concept,scale=.5},
    orange/.style={
        conc3,
        execute at begin node={\begingroup\begin{lrbox}{\rotatenodebox}},
        execute at end node={\end{lrbox}\rotateme{\usebox\rotatenodebox}\endgroup},
    }
}
\begin{document}
\begin{tikzpicture}
  \path[small mindmap,concept,text=white]
    node[concept] {Bla} [clockwise from=-15]
    child[concept color=red,text=black]{
      node[concept]at(1,0){Bla Bla}[clockwise from=90]
      child[concept color=red!95!black,text=black]{
        node[concept]{A}[clockwise from = 120]
            child {node[conc3] {A.A}}
            child {node[conc3] {A.B}}
            child {node[conc3] {A.C}}
      }
      child[concept color=red!75!black,text=white,grow=50]{
        node[concept]{B}[clockwise from = 80]
            child {node[conc3] {B.A}}
            child {node[conc3] {B.B}}
            child {node[conc3] {B.C}}
      }
      child[concept color=red!50!black,text=white ,grow=10]{
        node[concept]{C}[clockwise from = 40]
            child {node[conc3] {C.A}}
            child {node[conc3] {C.B}}
            child {node[conc3] {C.C}}
      }
      child[concept color=red!25!black,text=white,grow=-30]{
        node[concept]{D}[clockwise from = 0]
            child {node[conc3] {D.A}}
            child {node[conc3] {D.B}}
            child {node[conc3] {D.C}}
      }
      child[concept color=red!10!black,text=white,grow=-70]{
        node[concept]{D}[clockwise from = -40]
            child {node[conc3] {D.A}}
            child {node[conc3] {D.B}}
            child {node[conc3] {D.C}}
      }
    }
    child[concept color=green,text=black, grow=195]{
      node[concept]{Bla Bla}[clockwise from=80]
      child[concept color=green!10!black,text=white]{
        node[concept]{Bla}[counterclockwise from = 50]
            child {node[conc3] {A.A}}
            child {node[conc3] {A.B}}
            child {node[conc3] {A.C}}
      }
      child[concept color=green!25!black,text=white,grow=120]{
        node[concept]{Bla}[counterclockwise from = 90]
            child {node[conc3] {A.A}}
            child {node[conc3] {A.B}}
            child {node[conc3] {A.C}}
      }
      child[concept color=green!50!black,text=white,grow=160]{
        node[concept]{Bla}[counterclockwise from = 130]
            child {node[conc3] {B.A}}
            child {node[conc3] {B.B}}
            child {node[conc3] {B.C}}
      }
      child[concept color=green!75!black,text=white ,grow=200]{
        node[concept]{Bla}[counterclockwise from = 170]
            child {node[conc3] {C.A}}
            child {node[conc3] {C.B}}
            child {node[conc3] {C.C}}
      }
      child[concept color=green!95!black,text=black,grow=240]{
        node[concept]{Bla}[counterclockwise from = 210]
            child {node[conc3] {D.A}}
            child {node[conc3] {D.B}}
            child {node[conc3] {D.C}}
      }
    }
    child[concept color=orange,text=black, grow = -90] {
      node[concept]at(-1.5,-2.5){Bla Bla}[clockwise from=10]
        child[concept color=orange!95!black]{
            node[concept]{Bla}[clockwise from = 40]
                child {node[orange] {A.A}}
                child {node[orange] {A.B}}
                child {node[orange] {A.C}}
        }
        child[concept color=orange!75!black, grow = -30]{
            node[concept]{Bla}[clockwise from =0]
                child {node[orange] {B.A}}
                child {node[orange] {B.B}}
                child {node[orange] {B.C}}
        }
        child[concept color=orange!50!black, text=white, grow=-70]{
            node[concept]{Bla}[clockwise from =-40]
                child {node[orange] {C.A}}
                child {node[orange] {C.B}}
                child {node[orange] {C.C}}
        }
        child[concept color=orange!25!black, text=white, grow=-110]{
            node[concept]{Bla}[clockwise from =-80]
                child {node[orange] {D.A}}
                child {node[orange] {D.B}}
                child {node[orange] {D.C}}
        }
        child[concept color=orange!10!black, text=white, grow=-150]{
            node[concept]{Bla}[clockwise from =-120]
                child {node[orange] {E.A}}
                child {node[orange] {E.B}}
                child {node[orange] {E.C}}
        }
    }
   ;
\end{tikzpicture}
\end{document}

Output

enter image description here

Best Answer

Related Solutions

[Tex/LaTex] Tikz mindmap problems

[Tex/LaTex] Radial Labels on Mindmap – Part I

1. The Mathematical Problem

¿zʞıʇ

2. The Rotation Problem

2½. The Node Text Problem

Code

Output

Related Question