Dear Hans,
Thank you for the quick update.
The modified version is very nice and easy to use.(though \Gate{F800} and
\Gate{F801} should be changed at line 135)
I am trying to use these symbols to draw the circuit.
I am able to arrange the gates using “label” in MetaFun. But I don’t know how
to connect them.
To do that, I need to know the exact position of input and output of gates.
Question:
What is the unit of drawing gates in the module? You use “draw (0,1)—(-1,1);”
to draw an input. Is there a default unit to say like that?
I can see “unit = 4” only in the whole module. By changing the unit, the size
of font is changed. Since I am just an user, I cannot find a way of locating
the position.
Is there a way to calculate the real position of inputs and outputs?
Thank you so much.
Best regards,
Dalyoung
******
Here is a test file for gates.
\usemodule[./Mathematics/meta-imp-logicsymbols.mkxl]
\startMPdefinitions
def connectPts(expr initP, termP)=
pair M;
M := .5(initP+termP);
if xpart initP = xpart termP:
draw ypart initP -- ypart termP;
elseif ypart initP = ypart termP:
draw xpart initP -- xpart termP;
else:
draw initP -- (xpart M,ypart initP)--(xpart M,ypart termP) -- termP;
fi;
enddef;
\stopMPdefinitions
\starttext
\definefont[logic][Serif*symbols:logic]
This is a test of logic font:
\startMPcode
numeric u; u := 1cm;
pair A,B;
A := (1,0)*u;
B := (2,3)*u;
label(textext("\tfb\lAND"), origin);
label(textext("\tfb\lOR"), (0, -1cm));
label(textext("\tfc\lXOR"), (1cm, -.5cm));
connectPts(A,B);
\stopMPcode
\stoptext
> 2026. 1. 31. 오전 8:41, Otared Kavian <[email protected]> 작성:
>
> Hi Hans,
>
> Thanks for the new version of the meta-imp-logicsymbols.mkxl module.
> It works fine and the shapes are very nice.
> I will test it in a document for students.
>
> Thanks a lot again,
> Best regards: Otared
>
>
>
>> On 30 Jan 2026, at 22:42, Hans Hagen via ntg-context <[email protected]
>> <mailto:[email protected]>> wrote:
>>
>> On 1/30/2026 9:53 AM, Jeong Dal via ntg-context wrote:
>>> Hi, Hans,
>>> It is great to see the result of defining fonts of Logic gates.
>>> Also, I learn your clever way of drawing logic gates a lot from your code.
>>
>> It was just a quick hack. I cleaned it up a bit.
>>
>>> Last year, I need to make a short manuscript of logic which contains the
>>> logic gates and Karnaugh Map for high school teachers.
>>> You may remember that I asked a lot to use Lua and MetaFun to draw Karnaugh
>>> map.
>>> You helped a lot and I am able to draw them more easily.
>>> Later, I found a Karnaugh Map module!
>>> At that time, another huddle is to draw logic gates. I draw it one by one
>>> that is a real time consuming job, and connecting those gates with lines is
>>> another trial and error job.
>>
>> I wonder if the flowchart module could help you there. After all there we
>> have shapes, connecting lines, etc.
>>
>>> There are so many math symbols like \infty, \sum, etc.
>>> Is it possible to define them like math symbols to use them \logicNot,
>>> \logicOr, …
>>
>> It depends on how you use the font. We basically hook them into a regular
>> font.
>>
>>
>>> BTW, logic gates is used to draw a circuit diagram, so it is another way to
>>> use them as figure.
>>> I believe that you find the best way of using it.
>>
>> For circuit diagram there are cad-like programs that also validate the
>> design.
>>
>> Hans
>>
>>
>> -----------------------------------------------------------------
>> Hans Hagen | PRAGMA ADE
>> Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
>> tel: 038 477 53 69 | www.pragma-ade.nl <http://www.pragma-ade.nl/> |
>> www.pragma-pod.nl <http://www.pragma-pod.nl/>
>> -----------------------------------------------------------------<meta-imp-logicsymbols.mkxl>___________________________________________________________________________________
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>> the Wiki!
>>
>> maillist : [email protected] <mailto:[email protected]> /
>> https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
>> <https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl>
>> webpage : https://www.pragma-ade.nl <https://www.pragma-ade.nl/> /
>> https://context.aanhet.net <https://context.aanhet.net/> (mirror)
>> archive : https://github.com/contextgarden/context
>> <https://github.com/contextgarden/context>
>> wiki : https://wiki.contextgarden.net <https://wiki.contextgarden.net/>
>> ___________________________________________________________________________________
>
> Otared Kavian
> e-mail: [email protected] <mailto:[email protected]>
> Phone: +33 6 88 26 70 95
>
>
>
>
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the
> Wiki!
>
> maillist : [email protected] /
> https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
> webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
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> wiki : https://wiki.contextgarden.net
> ___________________________________________________________________________________
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the
Wiki!
maillist : [email protected] /
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