Hans Hagen writes:

On 4/19/2019 5:48 PM, Andrea De Michele wrote:

...

I'm trying to use with Context makecirc a metapost library to draw electric circuits, but I have problems with the labels of the circuits element that are not displayed correctly.

FIRST EXAMPLE (No labels are displayed) ------------- \starttext

\startMPinclusions input makecirc; \stopMPinclusions

\startstaticMPfigure{circ1} u:= 1cm ; source.e((0,0u),DC,90,"\Delta V","2V") ; resistor.a((2u,1u),normal,90,"R_1","1$\Omega$") ; resistor.b((2u,-1u),normal,90,"R_2","2$\Omega$") ; wire(S.e.p,R.a.r,udsq) ; wire(S.e.n,R.b.l,udsq) ; wire(R.a.l,R.b.r,udsq) ; \stopstaticMPfigure \usestaticMPfigure[circ1]

\stoptext

I searched ctab for that library and it has soem hard wired latex stuff in it. You can make latex.mp empty (to play safe),

Load the file with:

\startMPinclusions string LaTeXsetup ; LaTeXsetup := ""; input "makecirc.mp"; vardef latex(expr t) = textext(t) enddef ; \stopMPinclusions

I didn't look into the details but yoru example runs then.

Hans

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Thank you, I didn't understand the magic behind that but it's works. Another question: there is a library to draw electrics circuit alternative to makecirc but more context/metafun friendly? -- Andrea De Michele -- Andrea De Michele

On Sat, 20 Apr 2019 23:00:09 +0200 Hans Hagen wrote:

On 4/20/2019 10:09 PM, Andrea De Michele wrote:

...

I didn't understand the magic behind that but it's works.

mp has no real text typesetting options so this hack provides it

Why not let latex=textext ;

...

Another question: there is a library to draw electrics circuit alternative to makecirc but more context/metafun friendly? the node library but it lacks things for drawing resistors ... i'll discuss this whith alan

I played with makecirc a while back (and I even used it to make simple circuit diagrams that I used in a patent application). A real electronic circuit drawing program these days will do circuit board layouts and automatic routing, etc. I'm not sure that we want to get into this with MP. Alan

On Sat, 20 Apr 2019 23:49:26 +0200 Hans Hagen wrote:

...

let latex=textext ;

That crashed here.

In fact, when I used makecirc.mp, I just commented out the following few lines at the head of the file: %input latex; % % Commands definitions to do the labeled easier % % %LaTeXsetup:=LaTeXsetup & %"\def\ohm{\ensuremath{\,\Omega}}" & %"\def\kohm{\,k\ensuremath{\Omega}}" & %"\def\modarg#1#2{\setbox0=\hbox{$\mkern-1mu/#2^\circ$}" & %"\dp0=.21ex $#1\underline{\box0}$}"; and everything worked (the macros use label() for text). Alan