Re: [NTG-context] Passing the parameters of a frame in an environment \startMPcode ... \stopMPcode

[Wolfgang Schuster]

Fabrice Couvreur schrieb am 20.04.2020 um 11:00:

Hi Wolfgang,
Thank you very much ; as usual your explanations are always clear and 
your approach to the problem intelligent and original. I would however 
like to know the way in which we can use the command \frameletter except 
for the rounded corners with outlinetext. For example, this doesn't work.


\startMPcode

      draw outlinetext.f
          ("\frameletter{A}")
          (withcolor darkred withpen pencircle scaled 1/10)
           rotated 5 xsized 2cm ;

\stopMPcode


Take a look at the log-file and you should see a line like this:

 begin error message
tex error   > tex error on line 8 in file ./test.tex: ! Undefined 
control sequence


 \par draw outlinetext.f ("\frameletter
 end error message

As the error message tells you the command \frameletter doesn't exist, 
you can fix this with \defineframed[frameletter]


 begin example
\defineframed [frameletter]

\starttext

\startMPcode

draw outlinetext.f
("\frameletter{A}")
(withcolor darkred withpen pencircle scaled 1/10)
rotated 5 xsized 2cm ;

\stopMPcode

\stoptext
 end example

Wolfgang
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Re: [NTG-context] Passing the parameters of a frame in an environment \startMPcode ... \stopMPcode

[Fabrice Couvreur]

Hi Wolfgang,
Thank you very much ; as usual your explanations are always clear and your
approach to the problem intelligent and original. I would however like to
know the way in which we can use the command \frameletter except for the
rounded corners with outlinetext. For example, this doesn't work.

\startMPcode

 draw outlinetext.f
 ("\frameletter{A}")
 (withcolor darkred withpen pencircle scaled 1/10)
  rotated 5 xsized 2cm ;

\stopMPcode

Fabrice

Le lun. 20 avr. 2020 à 10:36, Wolfgang Schuster <
wolfgang.schuster.li...@gmail.com> a écrit :

> Rudolf Bahr schrieb am 20.04.2020 um 10:23:
> > On Mon, Apr 20, 2020 at 09:21:41AM +0200, Wolfgang Schuster wrote:
> >> Fabrice Couvreur schrieb am 19.04.2020 um 22:55:
> >>> Hi,
> >>> I try to reproduce the figure as faithfully as possible. I tried for
> the
> >>> rounded corners to put the key corner = round, but it does not work.
> >>
> >> 1. To create a new framed-instance you need \defineframe, \setupframed
> isn't
> >> enough to set the values.
> >>
> >> I guess you assumed this works similar to xtables but this
> mechanism sets
> >> a few values to assure \setupxtable is enough in certain cases but even
> here
> >> you need \definextable in certain cases.
> >>
> >> When you create a new instance you have to use the name of the new
> >> instance as command name, e.g. \frameletter or use the \placeframed
> command
> >> which takes the name as argument, e.g. \placeframed[frameletter].
> >>
> >> 2. You can't pass the name of a framed-instance to \framed (backwards
> >> compatibility, performance ...), this is only possible with
> \startframed.
> >>
> >> 3. ConTeXt uses different mechanism to draw rectangular (unless you
> draw a
> >> closed frame) and rounded frame and the mechanism for rounded frames
> doesn't
> >> work with outlinetext.
> >>
> >> 4. To achieve the desired result you can now a) use MetaPost to draw the
> >> complete card (letter plus frame) or b) use only TeX to put the letter
> in a
> >> frame and rotate it.
> >>
> >>  begin tex example
> >> \usecolors[svg]
> >>
> >> \defineframed
> >>[frameletter]
> >>[width=1.25em,
> >> height=1.75em,
> >> foregroundstyle=\ssbfc,
> >> corner=round,
> >> radius=0.1\bodyfontsize,
> >> rulethickness=1pt]
> >>
> >> \starttext
> >>
> >> \startTEXpage[offset=\linewidth]
> >> \dontleavehmode
> >> \rotate [rotation=5] {\color[darkred]   {\frameletter{A}}}
> >> \rotate [rotation=-5]{\color[green] {\frameletter{L}}}
> >> \rotate [rotation=5] {\color[mediumblue]{\frameletter{E}}}
> >> \rotate [rotation=-5]{\color[darkviolet]{\frameletter{A}}}
> >> \stopTEXpage
> >>
> >> \stoptext
> >>  end tex example
> >>
> >> Wolfgang
> >
> > Nice Example and good explanation, Wolfgang. But why did you use the
> command
> > "dontleavehmode"? It doesn't seem to be necessary in this example.
>
> I wrote the example without TeXpage where I needed \doneleavehmode to
> keep all cards on the same line. At the end I just added TeXpage to
> create a cropped image with with a small border and forgot to remove it.
>
> Wolfgang
>
>
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Re: [NTG-context] Passing the parameters of a frame in an environment \startMPcode ... \stopMPcode

[Wolfgang Schuster]

Rudolf Bahr schrieb am 20.04.2020 um 10:23:

On Mon, Apr 20, 2020 at 09:21:41AM +0200, Wolfgang Schuster wrote:

Fabrice Couvreur schrieb am 19.04.2020 um 22:55:

Hi,
I try to reproduce the figure as faithfully as possible. I tried for the
rounded corners to put the key corner = round, but it does not work.


1. To create a new framed-instance you need \defineframe, \setupframed isn't
enough to set the values.

I guess you assumed this works similar to xtables but this mechanism sets
a few values to assure \setupxtable is enough in certain cases but even here
you need \definextable in certain cases.

When you create a new instance you have to use the name of the new
instance as command name, e.g. \frameletter or use the \placeframed command
which takes the name as argument, e.g. \placeframed[frameletter].

2. You can't pass the name of a framed-instance to \framed (backwards
compatibility, performance ...), this is only possible with \startframed.

3. ConTeXt uses different mechanism to draw rectangular (unless you draw a
closed frame) and rounded frame and the mechanism for rounded frames doesn't
work with outlinetext.

4. To achieve the desired result you can now a) use MetaPost to draw the
complete card (letter plus frame) or b) use only TeX to put the letter in a
frame and rotate it.

 begin tex example
\usecolors[svg]

\defineframed
   [frameletter]
   [width=1.25em,
height=1.75em,
foregroundstyle=\ssbfc,
corner=round,
radius=0.1\bodyfontsize,
rulethickness=1pt]

\starttext

\startTEXpage[offset=\linewidth]
\dontleavehmode
\rotate [rotation=5] {\color[darkred]   {\frameletter{A}}}
\rotate [rotation=-5]{\color[green] {\frameletter{L}}}
\rotate [rotation=5] {\color[mediumblue]{\frameletter{E}}}
\rotate [rotation=-5]{\color[darkviolet]{\frameletter{A}}}
\stopTEXpage

\stoptext
 end tex example

Wolfgang


Nice Example and good explanation, Wolfgang. But why did you use the command
"dontleavehmode"? It doesn't seem to be necessary in this example.


I wrote the example without TeXpage where I needed \doneleavehmode to 
keep all cards on the same line. At the end I just added TeXpage to 
create a cropped image with with a small border and forgot to remove it.


Wolfgang

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Re: [NTG-context] Passing the parameters of a frame in an environment \startMPcode ... \stopMPcode

[Rudolf Bahr]

On Mon, Apr 20, 2020 at 09:21:41AM +0200, Wolfgang Schuster wrote:
> Fabrice Couvreur schrieb am 19.04.2020 um 22:55:
> > Hi,
> > I try to reproduce the figure as faithfully as possible. I tried for the
> > rounded corners to put the key corner = round, but it does not work.
> 
> 1. To create a new framed-instance you need \defineframe, \setupframed isn't
> enough to set the values.
> 
>I guess you assumed this works similar to xtables but this mechanism sets
> a few values to assure \setupxtable is enough in certain cases but even here
> you need \definextable in certain cases.
> 
>When you create a new instance you have to use the name of the new
> instance as command name, e.g. \frameletter or use the \placeframed command
> which takes the name as argument, e.g. \placeframed[frameletter].
> 
> 2. You can't pass the name of a framed-instance to \framed (backwards
> compatibility, performance ...), this is only possible with \startframed.
> 
> 3. ConTeXt uses different mechanism to draw rectangular (unless you draw a
> closed frame) and rounded frame and the mechanism for rounded frames doesn't
> work with outlinetext.
> 
> 4. To achieve the desired result you can now a) use MetaPost to draw the
> complete card (letter plus frame) or b) use only TeX to put the letter in a
> frame and rotate it.
> 
>  begin tex example
> \usecolors[svg]
> 
> \defineframed
>   [frameletter]
>   [width=1.25em,
>height=1.75em,
>foregroundstyle=\ssbfc,
>corner=round,
>radius=0.1\bodyfontsize,
>rulethickness=1pt]
> 
> \starttext
> 
> \startTEXpage[offset=\linewidth]
> \dontleavehmode
> \rotate [rotation=5] {\color[darkred]   {\frameletter{A}}}
> \rotate [rotation=-5]{\color[green] {\frameletter{L}}}
> \rotate [rotation=5] {\color[mediumblue]{\frameletter{E}}}
> \rotate [rotation=-5]{\color[darkviolet]{\frameletter{A}}}
> \stopTEXpage
> 
> \stoptext
>  end tex example
> 
> Wolfgang


Nice Example and good explanation, Wolfgang. But why did you use the command
"dontleavehmode"? It doesn't seem to be necessary in this example.

Rudolf
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Re: [NTG-context] Passing the parameters of a frame in an environment \startMPcode ... \stopMPcode

[Wolfgang Schuster]

Fabrice Couvreur schrieb am 19.04.2020 um 22:55:

Hi,
I try to reproduce the figure as faithfully as possible. I tried for the 
rounded corners to put the key corner = round, but it does not work.


1. To create a new framed-instance you need \defineframe, \setupframed 
isn't enough to set the values.


   I guess you assumed this works similar to xtables but this mechanism 
sets a few values to assure \setupxtable is enough in certain cases but 
even here you need \definextable in certain cases.


   When you create a new instance you have to use the name of the new 
instance as command name, e.g. \frameletter or use the \placeframed 
command which takes the name as argument, e.g. \placeframed[frameletter].


2. You can't pass the name of a framed-instance to \framed (backwards 
compatibility, performance ...), this is only possible with \startframed.


3. ConTeXt uses different mechanism to draw rectangular (unless you draw 
a closed frame) and rounded frame and the mechanism for rounded frames 
doesn't work with outlinetext.


4. To achieve the desired result you can now a) use MetaPost to draw the 
complete card (letter plus frame) or b) use only TeX to put the letter 
in a frame and rotate it.


 begin tex example
\usecolors[svg]

\defineframed
  [frameletter]
  [width=1.25em,
   height=1.75em,
   foregroundstyle=\ssbfc,
   corner=round,
   radius=0.1\bodyfontsize,
   rulethickness=1pt]

\starttext

\startTEXpage[offset=\linewidth]
\dontleavehmode
\rotate [rotation=5] {\color[darkred]   {\frameletter{A}}}
\rotate [rotation=-5]{\color[green] {\frameletter{L}}}
\rotate [rotation=5] {\color[mediumblue]{\frameletter{E}}}
\rotate [rotation=-5]{\color[darkviolet]{\frameletter{A}}}
\stopTEXpage

\stoptext
 end tex example

Wolfgang
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[NTG-context] Passing the parameters of a frame in an environment \startMPcode ... \stopMPcode

[Fabrice Couvreur]

Hi,
I try to reproduce the figure as faithfully as possible. I tried for the
rounded corners to put the key corner = round, but it does not work.
Thanks for your help.
Fabrice

\usecolors[xwi]
\definecolor [prune] [r=1.29,g=.20,b=.83]
\starttext
\setupframed[frameletter][corner=round,align=normal]

\startMPcode

 draw outlinetext.f
 ("\framed[frameletter]{A}")
 (withcolor darkred withpen pencircle scaled 1/10)
  rotated 5 xsized 2cm ;

 draw outlinetext.f
 ("\framed[frameletter]{L}")
 (withcolor green withpen pencircle scaled 1/10)
  rotated -5 xsized 2cm shifted (2cm,0);

 draw outlinetext.f
 ("\framed[frameletter]{E}")
 (withcolor \MPcolor{blueviolet} withpen pencircle scaled 1/10)
  rotated 5 xsized 2cm shifted (4.5cm,0);

 draw outlinetext.f
 ("\framed[frameletter]{A}")
 (withcolor \MPcolor{prune} withpen pencircle scaled 1/10)
  rotated -5 xsized 2cm shifted (6.5cm,0);

\stopMPcode

\stoptext
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Re: [NTG-context] \startMPcode and \startMPpage

[Jeong Dal]

Dear Hans,

Thank you for the reply.
Since  \startMPcode … \stopMPcode form is used in the manual, I think that it 
is OK to use it for all cases.

Thank you again.

Best regards,

Dalyoung


> 2020. 4. 17. 오전 5:01, Hans Hagen  작성:
> 
> On 4/16/2020 8:36 PM, Jeong Dal wrote:
>> Hi,
>> The following sample code is working well in the \startMPpage ~ \stopMPpage, 
>> but is not working in the \startMPcode ~ \stopMPcode.
>> The error message is
>> \textfont0 is undefined (character 63)
>> l.6 \setstrut\strut $A$
>> If I remove “$” from the code, it is also working in \startMPcode ~ 
>> \stopMPcode.
>> Is there anything which I have to set for \startMPcode?
> 
> \starttext ... \stoptext
> 
> or
> 
> \startMPpage[instance=doublefun]
> 
> \stopMPpage
> 
>> Best regards,
>> Dalyoung
>> 
>> \startMPcode{doublefun}
>> %\startMPpage
>> numeric count, temp[], tt, minus, u; u := 1cm;
>> path p,q,r;
>> pair A,B,C,D;
>> string varName, ss, pos[];
>> p := unitsquare xyscaled (8u,3.5u);
>> *draw p;*
>> *
>> *
>> pos[0] := "bot";
>> pos[1] := "rt";
>> pos[2] := "top";
>> pos[3] := "lft";
>> varName := "yxwz";
>> count := 0;
>> pickup pencircle scaled 5pt;
>> for i = 0 upto 3:
>> drawdot (point i of p);
>> draw lmt_text[
>> text = "$" & char(65+i) & "$",
>> anchor = pos[i],
>> offset = 2pt,
>> position = point i of p,
>> ];
>> endfor;
>> %\stopMPpage
>> \stopMPcode
>> ___
>> If your question is of interest to others as well, please add an entry to 
>> the Wiki!
>> maillist : ntg-context@ntg.nl <mailto:ntg-context@ntg.nl> / 
>> http://www.ntg.nl/mailman/listinfo/ntg-context 
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> 
> -- 
> 
> -
>  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/>
> -

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Re: [NTG-context] \startMPcode and \startMPpage

[Hans Hagen]

On 4/16/2020 8:36 PM, Jeong Dal wrote:

Hi,

The following sample code is working well in the \startMPpage ~ 
\stopMPpage, but is not working in the \startMPcode ~ \stopMPcode.


The error message is

\textfont0 is undefined (character 63)

l.6 \setstrut\strut $A$

If I remove “$” from the code, it is also working in \startMPcode ~ 
\stopMPcode.


Is there anything which I have to set for \startMPcode?


\starttext ... \stoptext

or

\startMPpage[instance=doublefun]

\stopMPpage


Best regards,

Dalyoung


\startMPcode{doublefun}
%\startMPpage
numeric count, temp[], tt, minus, u; u := 1cm;
path p,q,r;
pair A,B,C,D;
string varName, ss, pos[];
p := unitsquare xyscaled (8u,3.5u);
*draw p;*
*
*
pos[0] := "bot";
pos[1] := "rt";
pos[2] := "top";
pos[3] := "lft";
varName := "yxwz";
count := 0;
pickup pencircle scaled 5pt;

for i = 0 upto 3:
drawdot (point i of p);
draw lmt_text[
text = "$" & char(65+i) & "$",
anchor = pos[i],
offset = 2pt,
position = point i of p,
];
endfor;
%\stopMPpage
\stopMPcode



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  Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
   tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
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[NTG-context] \startMPcode and \startMPpage

[Jeong Dal]

Hi,

The following sample code is working well in the \startMPpage ~ \stopMPpage, 
but is not working in the \startMPcode ~ \stopMPcode.

The error message is 

\textfont0 is undefined (character 63)

l.6 \setstrut\strut $A$

If I remove “$” from the code, it is also working in \startMPcode ~ \stopMPcode.

Is there anything which I have to set for \startMPcode?

Best regards,

Dalyoung


\startMPcode{doublefun}
%\startMPpage
numeric count, temp[], tt, minus, u; u := 1cm;
path p,q,r;
pair A,B,C,D;
string varName, ss, pos[];
p := unitsquare xyscaled (8u,3.5u);
draw p;

pos[0] := "bot";
pos[1] := "rt";
pos[2] := "top";
pos[3] := "lft";
varName := "yxwz";
count := 0;
pickup pencircle scaled 5pt;

for i = 0 upto 3: 
drawdot (point i of p);
draw lmt_text[
text = "$" & char(65+i) & "$",
anchor = pos[i],
offset = 2pt,
position = point i of p,  
];
endfor;
%\stopMPpage
\stopMPcode


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Re: [NTG-context] Problem to place a label in an environment \startMPcode \stopMPcode

[Wolfgang Schuster]

Alan BRASLAU 
31. Dezember 2015 um 20:09
Works fine here.

Alan


P.S. I simplified your code slightly:


\definefloat
[recipe]
[figure]
[default={right,none}]
You can’t do this because the second argument is used the names of the 
\placelistof… and \completelistof… command.



The correct definition for the new float is:

\definefloat[recipe][recipes][figure]
\setupfloat[recipe][default={right,none}]

Wolfgang
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Re: [NTG-context] Problem to place a label in an environment \startMPcode \stopMPcode

[Alan BRASLAU]

Works fine here.

Alan


P.S. I simplified your code slightly:


\definefloat
   [recipe]
   [figure]
   [default={right,none}]

\setupbodyfont [pagella,9pt]

\starttext

\startplacerecipe

  \startMPcode

  pair vert[] ;
  numeric n ; n := 5 ;
  numeric radius ; radius := 2cm ;

  for i=0 upto n : 
vert[i] = radius * dir(360*i/(n+1)) ;
  endfor ;

  draw for i=0 upto n: vert[i] -- endfor cycle withcolor blue ; 

  draw for i=0 upto n: vert[i] .. endfor cycle withcolor red ; 

  draw origin--vert0 withcolor green ;

  draw origin--vert5 withcolor green ;

  draw origin--.5[vert0,vert5] dashed evenly ;

  label.urt("C",vert1) ;
  %alternately:
  %draw textext.urt("C") shifted vert1 ;

  \stopMPcode  

\stopplacerecipe

\input knuth

\stoptext




On Thu, 31 Dec 2015 17:46:35 +0100
Fabrice Couvreur <fabrice1.couvr...@gmail.com> wrote:

> Hello,
> The code below works perfectly without the placement of the label,
> but if I want to place the label, it no longer works.
> Thank you
> 
> \definefloat
>[recipe]
>[figure]
> 
> \setupfloat
>[recipe]
>[default={right,none}]
> 
> \starttext
> 
> \switchtobodyfont [pagella, 9pt]
> 
> \placerecipe{}{
> 
> \startMPcode
> 
> pair vert[] ;
> n:=6 ; radius=2cm ;
> for i=0 upto n :
> vert[i] = radius * dir(360*i/n) ;
> endfor ;
> 
> draw for i=0 upto n-1: vert[i] -- endfor cycle withcolor blue ;
> 
> draw for i=0 upto n-1: vert[i] .. endfor cycle withcolor red ;
> 
> draw (0,0)--vert[0] withcolor green ;
> 
> draw (0,0)--vert[5] withcolor green ;
> 
> draw (0,0) --(vert[0]+vert[5])/2 dashed evenly ;
> 
> % label.urt("C",vert[1])  ;
> 
> 
> \stopMPcode
> }
> 
> \input knuth
> 
> \stoptext



-- 
Alan Braslau
CEA DSM-IRAMIS-SPEC
CNRS UMR 3680
Orme des Merisiers
91191 Gif-sur-Yvette cedex FRANCE
tel: +33 1 69 08 73 15
fax: +33 1 69 08 87 86
mailto:alan.bras...@cea.fr
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[NTG-context] Problem to place a label in an environment \startMPcode \stopMPcode

[Fabrice Couvreur]

Hello,
The code below works perfectly without the placement of the label, but if I
want to place the label, it no longer works.
Thank you

\definefloat
   [recipe]
   [figure]

\setupfloat
   [recipe]
   [default={right,none}]

\starttext

\switchtobodyfont [pagella, 9pt]

\placerecipe{}{

\startMPcode

pair vert[] ;
n:=6 ; radius=2cm ;
for i=0 upto n :
vert[i] = radius * dir(360*i/n) ;
endfor ;

draw for i=0 upto n-1: vert[i] -- endfor cycle withcolor blue ;

draw for i=0 upto n-1: vert[i] .. endfor cycle withcolor red ;

draw (0,0)--vert[0] withcolor green ;

draw (0,0)--vert[5] withcolor green ;

draw (0,0) --(vert[0]+vert[5])/2 dashed evenly ;

% label.urt("C",vert[1])  ;


\stopMPcode
}

\input knuth

\stoptext
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