New \Rightarrow with tikz

Question

How can I draw \Rightarrow like this:?

\documentclass{standalone}
\usepackage{tikz}
\newcommand{\Arrow}[1]{%
\parbox{#1}{\tikz{\draw[->,line width=0.7pt,line cap=round](0,0)--(#1,0);}}
}
\newcommand{\myarrow}{\Arrow{.45cm}}
\begin{document}
4 \myarrow 2
\end{document}

Update: How can i fix the left side?

\documentclass{standalone}
\usepackage{tikz}
\usetikzlibrary{arrows}
\newcommand{\Arrow}[1]{%
\parbox{#1}{\tikz{\draw[-implies,double equal sign distance,line width=0.7pt,line cap=round](0,0)--(#1,0);}}
}
\newcommand{\myarrow}{\hspace{0.0cm}\Arrow{.45cm}\hspace{0.0cm}}
\begin{document}
4 \myarrow 2
\end{document}

What exactly is the question/problem? Your code produces exactly this picture. Is the question how to replace the arrow in \Rightarrow by your arrow? Or define a command that behaves like \Rightarrow in math mode? — gernot, Oct 08 '21 at 09:20
@gernot I was able to draw new rightarrow. But I couldn't draw Rightarrow. I want to define a new myRightarrow. How can i draw using tikz? — cufcuf, Oct 08 '21 at 09:23
I assume you mean you want a double line, you can add ,double but the output isn't great so you'd need to fiddle with the parameters a bit — David Carlisle, Oct 08 '21 at 09:23
See How can I tikz the equivalence (i.e. $\Leftrightarrow$) as arrow? — campa, Oct 08 '21 at 09:33
Yes i want this @David Carlisle but the left side is a bit bad how do i fix it? — cufcuf, Oct 08 '21 at 09:39
yes but just don't use implies which is the double arrow surely there is enough there for you to get what you want. also why do you have the parbox here and why adding a space token after the box? — David Carlisle, Oct 08 '21 at 09:41
I think perhaps using the arrow -{Classical TikZ Rightarrow} (which needs \usetikzlibrary{arrows.meta}) instead of the default -> might be close to what you want. Also remove the line cap. — Peter Grill, Oct 08 '21 at 09:53

Peter Grill · Accepted Answer · 2021-10-10T06:46:51.927

5

Is this what you are looking for (compare use of \Rightarrow with that drawn with TikZ):

Notes:

Earlier image had vertical artifcats. Turns out that this depends on the pdf bowser. Image here is produced usign Acrobat and no artifact is visible. Same file viewed in TeXShop or Preview on Mac shows the artifact.

Code:

\documentclass[border=2pt]{standalone}
\usepackage{mathtools}
\usepackage{tikz}
\usetikzlibrary{arrows.meta}
\newcommand{\myRightarrow}[1][0.32cm]{%
    \mathbin{
        \tikz [x=#1]
            \draw [
                draw=red,
                -{Classical TikZ Rightarrow[scale=0.45, line cap=round]}, 
                line width=0.40pt, 
                double=none,
                double distance=0.375ex,
            ] 
                (0,0) -- (1,0);
    }%
}%
\begin{document}
$4 \Rightarrow 2$
$4 \myRightarrow 2$
\end{document}

edited Oct 10 '21 at 06:46

answered Oct 08 '21 at 10:03

Peter Grill

223,288

For the note: I think that your problem of the "artifcats" it is the same problem when you of tikz-cd. In fact I use xy package to delete this problem. (+1). – Sebastiano Oct 08 '21 at 12:11
@Sebastiano how? – cufcuf Oct 08 '21 at 14:57
@cufcuf If you drawing a code using tikz-cd package you have a strange little vertical line. – Sebastiano Oct 08 '21 at 15:29
1

@cufcuf: I suspect that the artifact bug will be resolved in a future update. One can always hack it and draw over those artifacts in white (or the background color) so that the artifacts dont show. – Peter Grill Oct 08 '21 at 17:24
I tried to draw white on the background but I couldn't :) @Peter Grill – cufcuf Oct 08 '21 at 19:04
1

@cufcuf: Slightlly updated code. As the artifact is dependent on the pdf viewer, am going to ignore it for now. Hopefully future updates to the OS/pdf viewer will resolve that. – Peter Grill Oct 10 '21 at 06:48

New \Rightarrow with tikz

1 Answers1

Notes:

Code: