Strange problem with metapost graphics

Strange problem with metapost graphics

[Jean Magnan de Bornier]

Hi all, 
Here is minimal example of some trouble I have:

...................................
\startMPinclusions
 numeric u; u=1cm;
\stopMPinclusions
\starttext
\startuseMPgraphic{dummy}
drawarrow (0,0)..(8u,0);
label.bot(\sometxt{temps}, (7u,-.5u));
\stopuseMPgraphic
\placefigure[fig:Uncontratdanslaflèchedutemps]{Un contrat dans la flèche du temps}{\useMPgraphic{dummy}}


\startuseMPgraphic{ummy}
  pair A[];
  A[0]:=(-1u, -1u);
  A[1]:=( 6u, -1u);
  A[2]:=( 6u,  4u);
  A[3]:=(-1u,  4u);
  draw A[0]--A[1]--A[2]--A[3]--cycle withpen pencircle scaled 1pt;
label.bot(\sometxt{Dupont}, A[0]);
label.top(\sometxt{Smith}, A[2]);
\stopuseMPgraphic
\placefigure[fig:Boîte d'Edgeworth]{Boîte d'Edgeworth}{\useMPgraphic{ummy}}
\stoptext
.................................

The trouble is that this compiles nicely with pdftex, a little less nicely
with xetex, and badly with luatex, tested at home and on context live.

- xetex: the label in the first graphic appears with bad size.

- luatex: first label in the second graphic appears with bad size and font,
and second label disappears; but if I comment out the label in the first
graphic, the second graphic is as expected.

Any idea?
-- 
Jean
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : https://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: Strange problem with metapost graphics

[Yue Wang]

Hi.

XeTeX result always have some offset compared to the pdftex result. I
don't know why.
Moreover, it is impossible to use opentype (at least I never  use it
successfully.).

Yue Wang
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : https://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: Strange problem with metapost graphics

[Taco Hoekwater]

Jean Magnan de Bornier wrote:
> 
> - luatex: first label in the second graphic appears with bad size and font,
> and second label disappears; but if I comment out the label in the first
> graphic, the second graphic is as expected.
> 
> Any idea?

A much smaller luatex test is possible:

\startuseMPgraphic{a}
label.bot(textext("a"), origin);
\stopuseMPgraphic
\useMPgraphic{a}
\startuseMPgraphic{b}
label.bot(textext("b"), origin);
\stopuseMPgraphic
\useMPgraphic{b}

There is some problem with the textext array indices, it seems:

report >> error: >> (0,0,_tt_w_2,0,0,1)
! Transform components aren't all known.
<to be read again>
                    yscaled
<argument> ...square.xscaled._tt_w_[_tt_n_]yscaled
 
(_tt_h_[_tt_n_]+_tt_d_[_tt...
image->...ture;currentpicture:=nullpicture;(TEXT2)
                                                   ;currentpicture.endgroup
textext->...ipt"ts"withpostscript.decimal._tt_n_;)
                                                   fi.endgroup
<*> ...; ;randomseed:=1403; label.bot(textext("b")
                                                   , origin); ;
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : https://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: Strange problem with metapost graphics

[Hans Hagen]

Jean Magnan de Bornier wrote:
> Hi all, 
> Here is minimal example of some trouble I have:
> 
> ...................................
> \startMPinclusions
>  numeric u; u=1cm;
> \stopMPinclusions
> \starttext
> \startuseMPgraphic{dummy}
> drawarrow (0,0)..(8u,0);
> label.bot(\sometxt{temps}, (7u,-.5u));
> \stopuseMPgraphic
> \placefigure[fig:Uncontratdanslaflèchedutemps]{Un contrat dans la flèche du temps}{\useMPgraphic{dummy}}
> 
> 
> \startuseMPgraphic{ummy}
>   pair A[];
>   A[0]:=(-1u, -1u);
>   A[1]:=( 6u, -1u);
>   A[2]:=( 6u,  4u);
>   A[3]:=(-1u,  4u);
>   draw A[0]--A[1]--A[2]--A[3]--cycle withpen pencircle scaled 1pt;
> label.bot(\sometxt{Dupont}, A[0]);
> label.top(\sometxt{Smith}, A[2]);
> \stopuseMPgraphic
> \placefigure[fig:Boîte d'Edgeworth]{Boîte d'Edgeworth}{\useMPgraphic{ummy}}
> \stoptext
> .................................
> 
> The trouble is that this compiles nicely with pdftex, a little less nicely
> with xetex, and badly with luatex, tested at home and on context live.
> 
> - xetex: the label in the first graphic appears with bad size.
> 
> - luatex: first label in the second graphic appears with bad size and font,
> and second label disappears; but if I comment out the label in the first
> graphic, the second graphic is as expected.
> 
> Any idea?

at the end of mp-mlib.mp add

def resettextexts =
     _tt_n_ := 0 ;
enddef ;

extra_endfig   := extra_endfig   & "resettextexts ; " ;

then run

ctxtools --touch
context --make (or texexec --make --luatex)


-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
      tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
                                              | www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : https://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: Strange problem with metapost graphics

[Jean Magnan de Bornier]

Le 17 avril à 13:17:44 Hans Hagen <pragma@wxs.nl> écrit notamment:

| Jean Magnan de Bornier wrote:
| > Hi all, 
| > Here is minimal example of some trouble I have:
| > 
| > ...................................
| > \startMPinclusions
| >  numeric u; u=1cm;
| > \stopMPinclusions
| > \starttext
| > \startuseMPgraphic{dummy}
| > drawarrow (0,0)..(8u,0);
| > label.bot(\sometxt{temps}, (7u,-.5u));
| > \stopuseMPgraphic
| > \placefigure[fig:Uncontratdanslaflèchedutemps]{Un contrat dans la flèche du temps}{\useMPgraphic{dummy}}
| > 
| > 
| > \startuseMPgraphic{ummy}
| >   pair A[];
| >   A[0]:=(-1u, -1u);
| >   A[1]:=( 6u, -1u);
| >   A[2]:=( 6u,  4u);
| >   A[3]:=(-1u,  4u);
| >   draw A[0]--A[1]--A[2]--A[3]--cycle withpen pencircle scaled 1pt;
| > label.bot(\sometxt{Dupont}, A[0]);
| > label.top(\sometxt{Smith}, A[2]);
| > \stopuseMPgraphic
| > \placefigure[fig:Boîte d'Edgeworth]{Boîte d'Edgeworth}{\useMPgraphic{ummy}}
| > \stoptext
| > .................................
| > 
| > The trouble is that this compiles nicely with pdftex, a little less nicely
| > with xetex, and badly with luatex, tested at home and on context live.
| > 
| > - xetex: the label in the first graphic appears with bad size.
| > 
| > - luatex: first label in the second graphic appears with bad size and font,
| > and second label disappears; but if I comment out the label in the first
| > graphic, the second graphic is as expected.
| > 
| > Any idea?
>
| at the end of mp-mlib.mp add
>
| def resettextexts =
|      _tt_n_ := 0 ;
| enddef ;
>
| extra_endfig   := extra_endfig   & "resettextexts ; " ;
>
| then run
>
| ctxtools --touch
| context --make (or texexec --make --luatex)

Done! But same result :-(

-- 
Jean
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : https://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________