[NTG-context] MetaPost background

[NTG-context] MetaPost background

[alan.caruanambom]

Hello, I need the background (lines and points) to be inside (tangent) of the frame, I don't know how to do it

\startuseMPgraphic{fullheightbackground}
    fill unitsquare xyscaled (OverlayWidth, OverlayHeight) withcolor "gray" ;

    w := MakeupWidth;
    h := OverlayHeight;

    draw (0,0)--(MakeupWidth,0) withpen pencircle scaled 2pt withcolor green;
    draw (0,OverlayHeight)--(MakeupWidth,OverlayHeight) withpen pencircle scaled 2pt withcolor green;

    drawdot (0,0) withpen pencircle scaled 8pt withcolor red;
    drawdot (MakeupWidth,OverlayHeight) withpen pencircle scaled 8pt withcolor red;
\stopuseMPgraphic

\defineoverlay
  [fullheightbackground]
  [\useMPgraphic{fullheightbackground}]

\setupframedtexts
  [background=fullheightbackground,
   backgroundoffset=0pt,
   frame=on]

\starttext

\startframedtext[width=\textwidth,align=left]
    \input knuth
\stopframedtext

\stoptext
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[NTG-context] Re: MetaPost background

[Otared Kavian]

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Hi,

If you change 

drawdot (0,0) withpen pencircle scaled 8pt withcolor red;

into

drawdot (6pt,6pt) withpen pencircle scaled 8pt withcolor red ;

you get what you want (at least for the red dot on the lower left corner).

Here 6pt = 2pt (with of the pen used for the frame) + 4pt (half the diameter of the pen used for the dot).

Best regards: Otared

> On 23 Jul 2024, at 20:29, alan.caruanambom@gmail.com wrote:
> 
> Hello, I need the background (lines and points) to be inside (tangent) of the frame, I don't know how to do it
> 
> \startuseMPgraphic{fullheightbackground}
>    fill unitsquare xyscaled (OverlayWidth, OverlayHeight) withcolor "gray" ;
> 
>    w := MakeupWidth;
>    h := OverlayHeight;
> 
>    draw (0,0)--(MakeupWidth,0) withpen pencircle scaled 2pt withcolor green;
>    draw (0,OverlayHeight)--(MakeupWidth,OverlayHeight) withpen pencircle scaled 2pt withcolor green;
> 
>    drawdot (0,0) withpen pencircle scaled 8pt withcolor red;
>    drawdot (MakeupWidth,OverlayHeight) withpen pencircle scaled 8pt withcolor red;
> \stopuseMPgraphic
> 
> \defineoverlay
>  [fullheightbackground]
>  [\useMPgraphic{fullheightbackground}]
> 
> \setupframedtexts
>  [background=fullheightbackground,
>   backgroundoffset=0pt,
>   frame=on]
> 
> \starttext
> 
> \startframedtext[width=\textwidth,align=left]
>    \input knuth
> \stopframedtext
> 
> \stoptext
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the Wiki!
> 
> maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
> webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
> archive  : https://github.com/contextgarden/context
> wiki     : https://wiki.contextgarden.net
> ___________________________________________________________________________________

Otared Kavian
e-mail: otared@gmail.com
Phone: +33 6 88 26 70 95





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

maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive  : https://github.com/contextgarden/context
wiki     : https://wiki.contextgarden.net
___________________________________________________________________________________

[NTG-context] Re: MetaPost background

[Wolfgang Schuster]

alan.caruanambom@gmail.com schrieb am 23.07.2024 um 20:29:
> Hello, I need the background (lines and points) to be inside (tangent) of the frame, I don't know how to do it
>
> \startuseMPgraphic{fullheightbackground}
>      fill unitsquare xyscaled (OverlayWidth, OverlayHeight) withcolor "gray" ;
>
>      w := MakeupWidth;
>      h := OverlayHeight;
>
>      draw (0,0)--(MakeupWidth,0) withpen pencircle scaled 2pt withcolor green;
>      draw (0,OverlayHeight)--(MakeupWidth,OverlayHeight) withpen pencircle scaled 2pt withcolor green;

Add offset value to the horizontal/vertical dimensions.


     draw (0,1pt+OverlayLineWidth)--(MakeupWidth,1pt+OverlayLineWidth) 
withpen pencircle scaled 2pt withcolor green;
     draw 
(0,OverlayHeight-1pt-OverlayLineWidth)--(MakeupWidth,OverlayHeight-1pt-OverlayLineWidth) 
withpen pencircle scaled 2pt withcolor green;


>      drawdot (0,0) withpen pencircle scaled 8pt withcolor red;
>      drawdot (MakeupWidth,OverlayHeight) withpen pencircle scaled 8pt withcolor red;

Set a bounding box size for the image to ensure the image isn't 
stretched to fill the available space.

     setbounds currentpicture to OverlayBox;

> \stopuseMPgraphic

Wolfgang

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

maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
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wiki     : https://wiki.contextgarden.net
___________________________________________________________________________________

[NTG-context] Re: MetaPost background

[alan.caruanambom]

The frame is only for reference, what I need is that the background is not wider than or higher than the frame, changing the coordinates of the points can be done but I remember seeing an example in which using "shifted" it could be done move to a corner, without worrying about the coordinates or point size

\startuseMPgraphic{fullheightbackground}
    fill unitsquare xyscaled (OverlayWidth, OverlayHeight) withcolor "gray" ;

    w := MakeupWidth;
    h := OverlayHeight;

    draw (0,0)--(w,0) withpen pencircle scaled 2pt withcolor green;
    draw (0,h)--(w,h) withpen pencircle scaled 2pt withcolor green;

    drawdot (0,0) withpen pencircle scaled 8pt withcolor red;
    drawdot (w,h) withpen pencircle scaled 8pt withcolor red;
\stopuseMPgraphic

\defineoverlay
  [fullheightbackground]
  [\useMPgraphic{fullheightbackground}]

\setupframedtexts
  [background=fullheightbackground,
   backgroundoffset=0pt,
   frame=off]

\starttext

\startframedtext[width=\textwidth,align=left]
    \input knuth
\stopframedtext

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

maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive  : https://github.com/contextgarden/context
wiki     : https://wiki.contextgarden.net
___________________________________________________________________________________