Is there a way to personalize the lines constructed with dim? Make them dotted and red, for instance?
\documentclass[tikz,border=2cm]{standalone}
\usepackage{tkz-euclide}
\begin{document}
\begin{tikzpicture}
\tkzDefPoints{0/3/A, 0/-3/B}
\tkzDrawPoints(A,B)
\tkzDrawSegment[dim={\(l\),2cm,right=2mm}](A,B)
\tkzLabelPoints[left](A,B)
\end{tikzpicture}
\end{document}
News, Oct 7 2023
Since v4.03 (2022-01-19), tkz-euclide learnt two new options dim style and dim fence style in the way introduced in (the first example in) part "Update, Dec 6 2021" below.
Currently, the two new options are documented in texdoc tkz-euclide (v5.02c, 2023-02-03), sec. 23.1.3. "Adding dimensions with option dim new code from Muzimuzhi Z".
It seems the style of \tkzDrawSegment[dim={...}] is hardcoded, and is written directly in pgf codes. Currently I am not capable of extending it and providing flexible user options, and below is my first try.
dim color, restrict scopedim option in terms of decoration show path construction. New styles dim style and dim fence style.\documentclass[tikz,border=2cm]{standalone}
\usepackage{tkz-euclide}
\makeatletter
% originally defined in tkz-obj-eu-draw-lines.tex
\def\tkz@DrawSegment#1{%
% replace (begin|end)group with (|end)scope
\scope
\pgfqkeys{/tkzdraws}{#1}
\draw[line style,add=0 and 0,#1] (#2) to (#3);
\endscope
}%
\pgfdeclaredecoration{add dim}{final}{
\state{final}{%
\pgfmathsetmacro{\dist}{\pgfkeysvalueof{/pgf/decoration/distance}}
\pgfpathmoveto{\pgfpoint{0pt}{0pt}}
\pgfpathlineto{\pgfpoint{0pt}{1.2\dist}}
\pgfpathmoveto{\pgfpoint{\pgfdecoratedpathlength}{0pt}}
\pgfpathlineto{\pgfpoint{(\pgfdecoratedpathlength}{1.2\dist}}
% start of patch
\pgfusepath{stroke}
\pgfsetarrowsstart{latex}
\pgfsetarrowsend{latex}
\expandafter\pgfsetdash\tkz@dim@dashpattern
\pgfsetstrokecolor{\tkz@dim@color}
% end of patch
\pgfpathmoveto{\pgfpoint{0pt}{\dist}}
\pgfpathlineto{\pgfpoint{\pgfdecoratedpathlength}{\dist}}
\pgfusepath{stroke}
\pgfpathmoveto{\pgfpoint{0pt}{0pt}}
\pgfpathlineto{\pgfpoint{\pgfdecoratedpathlength}{0pt}}
}}
\tikzset{
dim color/.store in=\tkz@dim@color,
dim color=black,
% similar to code for \tikzoption{dash pattern}{...}
dim dash pattern/.code={%
\def\tikz@temp{#1}%
\ifx\tikz@temp\pgfutil@empty%
\def\tkz@dim@dashpattern{{}{0pt}}%
\else%
\def\tikz@dashpattern{}%
\expandafter\tikz@scandashon\pgfutil@gobble#1o@nil%
\edef\tkz@dim@dashpattern{{\tikz@dashpattern}{\noexpand\tikz@dashphase}}%
\fi
},
dim dash pattern=,
}
\makeatother
\begin{document}
\begin{tikzpicture}
\tkzDefPoints{0/3/A, 0/-3/B}
\tkzDrawPoints(A,B)
\tkzDrawSegmentdim={(l_0),1cm,right=2mm}, dim color=red, dim dash pattern={on 2pt off 2pt}
\tkzDrawSegmentdim={(l_1),2cm,right=2mm}, dim color=red
\tkzDrawSegmentdim={(l_2),3cm,right=2mm}
\tkzLabelPointsleft
\end{tikzpicture}
\end{document}
I've opened a feature request here: https://github.com/tkz-sty/tkz-euclide/issues/5. (archive on web.archive.org, seems the GitHub user tkz-sty was deleted.)
Activities not archived, all by GitHub user Alter Mundus:
Code adaptation is not obvious. The options must be optional. tkz-euclide is designed to make geometrical figures and I think it is better to use TikZ for this kind of problem.
Hello, I added your last code in the next version 4.01
Update, Dec 6 2021 (Oct 7 2023, added \IfPackageAtLeastTF conditionals)
Rework option dim to support styles dim style and dim fence style which accept general tikz options.
\documentclass{article}
\usepackage{tkz-euclide}
\makeatletter
% absorbed by tkz-euclide v4.00 (2022-01-04)
% see diff
% https://tug.org/svn/texlive/trunk/Master/texmf-dist/tex/latex/tkz-euclide/tkz-obj-eu-draw-lines.tex?r1=61495&r2=61496&pathrev=61668&
\IfPackageAtLeastTF{tkz-euclide}{2022-01-04}{}{
% originally defined in tkz-obj-eu-draw-lines.tex
\def\tkz@DrawSegment#1{%
\scope
\pgfqkeys{/tkzdraws}{#1}
\draw[line style,add=0 and 0, #1] (#2) to (#3);
\endscope
}
}
% absorbed by tkz-euclide v4.03 (2022-01-19)
% (actually absorbed since 4.01, but the least released one is 4.03)
% see diff
% - https://tug.org/svn/texlive/trunk/Master/texmf-dist/tex/latex/tkz-euclide/tkz-obj-eu-draw-lines.tex?r1=61667&r2=61668&pathrev=64473&
\IfPackageAtLeastTF{tkz-euclide}{2022-01-19}{}{
% rework dim option using decoration show path construction
\tikzset{
dim/.style args={#1,#2,#3}{%
postaction={
decoration={
show path construction,
lineto code={
% dim fence
\draw[dim fence style/.try]
(\tikzinputsegmentfirst) --
($ (\tikzinputsegmentfirst)!1.2(#2)!90:(\tikzinputsegmentlast) $)
(\tikzinputsegmentlast) --
($ (\tikzinputsegmentlast)!1.2(#2)!-90:(\tikzinputsegmentfirst) $);
% dim
\draw[dim style/.try]
($ (\tikzinputsegmentfirst)!#2!90:(\tikzinputsegmentlast) $) --
node[inner sep=0pt, font=\footnotesize, fill=\tkz@fillcolor, pos=.5, #3] {#1}
($ (\tikzinputsegmentlast)!#2!-90:(\tikzinputsegmentfirst) $);
}
},
decorate,
}
},
dim/.default={,0pt,},
dim style/.style={
latex-latex,
},
}
}
\makeatother
\begin{document}
\begin{tikzpicture}
\tkzDefPoints{0/3/A, 1/-3/B}
\tkzDrawPoints(A,B)
% test new style `dim style`
\tkzDrawSegment[dim={\(l_0\),1cm,right=2mm},
dim style/.append style={red, dash pattern={on 2pt off 2pt}}](A,B)
\tkzDrawSegment[dim={\(l_1\),2cm,right=2mm},
dim style/.append style={blue}](A,B)
\tkzDrawSegment[dim={\(l_2\),3cm,right=2mm}](A,B)
% test new style `dim fence style`
\tkzDrawSegment[dim={\(l_3\),-2cm,right=2mm},
dim style/.append style={orange},
dim fence style/.style={dashed}](A,B)
\tkzLabelPoints[left](A,B)
\end{tikzpicture}
\end{document}
It's possible to rework dim in terms of execute at end to but there's currently an issue about this option, see pgf-tikz/pgf#1086.
% rework option `dim`, using `execute at end to` instead of `decorate`
% FIXME: `execute at end to` will affect the graphics state of original `to`
% see https://github.com/pgf-tikz/pgf/issues/1086
\tikzset{
dim/.style args={#1,#2,#3}{%
execute at end to={
\draw[dim fence style/.try] % is "fence" an appropriate name?
(\tikztostart) -- ($ (\tikztostart)!1.2*(#2)!90:(\tikztotarget) $)
(\tikztotarget) -- ($ (\tikztotarget)!1.2*(#2)!-90:(\tikztostart) $);
\draw[dim style/.try]
($ (\tikztostart)!#2!90:(\tikztotarget) $)
-- node[black, inner sep=0pt, font=\footnotesize, fill=\tkz@fillcolor, #3] {#1}
($ (\tikztotarget)!#2!-90:(\tikztostart) $);
}
},
% init
dim/.default={,0pt,},
dim style/.style={
latex-latex,
},
}
\pgfsetdash{{0.1cm}{0.1cm}{0.1cm}{0.1cm}}{0cm}, which is even less flexible than mine.
– muzimuzhi Z
Jul 14 '20 at 12:53
tkz-euclide is designed to make geometrical figures and I think it is better to use TikZ for this kind of problem.
– Alain Matthes
Dec 03 '21 at 14:50
dim color, so it's now optional as well. dim provides a far better interface than tikz codes, and using colors in geometrical figures really enhances expression. A combined style key like dim style would be better, but then manually communication between tikz options and pgf drawing codes is unavoidable.
– muzimuzhi Z
Dec 03 '21 at 22:45
dim. It now works with styles dim style and dim fence style. See my updated answer.
– muzimuzhi Z
Dec 06 '21 at 05:50
tikzset to lighten the code.
– Alain Matthes
Jan 16 '22 at 17:23
dim style and dim fence style are available since tkz-euclide v4.03. See answer update for more info.
– muzimuzhi Z
Oct 07 '23 at 11:03
Here is an easy way with plain TikZ. In case you need a lot of such dimline, then simly make a new command.
\documentclass[tikz,border=5mm]{standalone}
\begin{document}
\begin{tikzpicture}
\path
(0,3) coordinate (A) node[left]{$A$}
(0,-3) coordinate (B) node[left]{$B$};
\draw[red,dotted] (A)--+(0:2.5) (B)--+(0:2.5);
\draw[red,<->] ([shift={(0:2)}]A)--([shift={(0:2)}]B) node[midway,right]{$l$};
\draw[thick,blue] (A)--(B);
\fill[blue] (A) circle(1.5pt) (B) circle(1.5pt);
\end{tikzpicture}
\end{document}
