Metafun example doesn't work

Metafun example doesn't work

[David Arnold]

All,

I've always wondered why this Metafun manual example doesn't work.

\startMPgraphic
   draw unitsquare
     xscaled 5cm yscaled 1cm
     withpen pencircle scaled 2mm
     withcolor .625 red;
\stopMPgraphic

\hbox\bgroup
\loadcurrentMPgraphic{width=5cm,height=1cm}\placeMPgraphic\quad
\loadcurrentMPgraphic{width=8cm,height=1cm}\placeMPgraphic\egroup

Re: Metafun example doesn't work

[Taco Hoekwater]

Hi David,

To me it looks like it does work, but perhaps I am not looking
at it correctly. Here is what I compiled:

   \setupcolors[state=start]
   \setupoutput[pdftex]
   \starttext
   \startMPgraphic
   draw unitsquare
     xscaled 5cm yscaled 1cm
     withpen pencircle scaled 2mm
     withcolor .625 red;
   \stopMPgraphic
   \hbox\bgroup
   \loadcurrentMPgraphic{width=5cm,height=1cm}\placeMPgraphic\quad
   \loadcurrentMPgraphic{width=8cm,height=1cm}\placeMPgraphic\egroup
   \stoptext

And I get a red outline around two rectangles next to eachother.
Does it crash for you?

Taco

David Arnold wrote:
> All,
> 
> I've always wondered why this Metafun manual example doesn't work.
> 
> \startMPgraphic
>   draw unitsquare
>     xscaled 5cm yscaled 1cm
>     withpen pencircle scaled 2mm
>     withcolor .625 red;
> \stopMPgraphic
> 
> \hbox\bgroup
> \loadcurrentMPgraphic{width=5cm,height=1cm}\placeMPgraphic\quad
> \loadcurrentMPgraphic{width=8cm,height=1cm}\placeMPgraphic\egroup
> _______________________________________________
> ntg-context mailing list
> ntg-context@ntg.nl
> http://www.ntg.nl/mailman/listinfo/ntg-context

Re: Metafun example doesn't work

[David Arnold]

It compiles, but the figures should not be identical according to the  
Metafun manual, page 201.

On Dec 18, 2005, at 1:01 AM, Taco Hoekwater wrote:

> Hi David,
>
> To me it looks like it does work, but perhaps I am not looking
> at it correctly. Here is what I compiled:
>
>   \setupcolors[state=start]
>   \setupoutput[pdftex]
>   \starttext
>   \startMPgraphic
>   draw unitsquare
>     xscaled 5cm yscaled 1cm
>     withpen pencircle scaled 2mm
>     withcolor .625 red;
>   \stopMPgraphic
>   \hbox\bgroup
>   \loadcurrentMPgraphic{width=5cm,height=1cm}\placeMPgraphic\quad
>   \loadcurrentMPgraphic{width=8cm,height=1cm}\placeMPgraphic\egroup
>   \stoptext
>
> And I get a red outline around two rectangles next to eachother.
> Does it crash for you?
>
> Taco
>
> David Arnold wrote:
>> All,
>> I've always wondered why this Metafun manual example doesn't work.
>> \startMPgraphic
>>   draw unitsquare
>>     xscaled 5cm yscaled 1cm
>>     withpen pencircle scaled 2mm
>>     withcolor .625 red;
>> \stopMPgraphic
>> \hbox\bgroup
>> \loadcurrentMPgraphic{width=5cm,height=1cm}\placeMPgraphic\quad
>> \loadcurrentMPgraphic{width=8cm,height=1cm}\placeMPgraphic\egroup
>> _______________________________________________
>> ntg-context mailing list
>> ntg-context@ntg.nl
>> http://www.ntg.nl/mailman/listinfo/ntg-context
>
> _______________________________________________
> ntg-context mailing list
> ntg-context@ntg.nl
> http://www.ntg.nl/mailman/listinfo/ntg-context

Re: Metafun example doesn't work

[Taco Hoekwater]

David Arnold wrote:
> It compiles, but the figures should not be identical according to the  
> Metafun manual, page 201.

Ah, I see now.  The second argument is dropped, because it was
assumed that it was never actually used. See the two disjunct
definitions of \insertMPfile in supp-mps.tex (the version documented
in the metafun manual) versus the one in in meta-ini.tex (the
version that is actually used).


Taco

Re: Metafun example doesn't work

[Hans Hagen]

Taco Hoekwater wrote:

> David Arnold wrote:
>
>> It compiles, but the figures should not be identical according to 
>> the  Metafun manual, page 201.
>
>
> Ah, I see now.  The second argument is dropped, because it was
> assumed that it was never actually used. See the two disjunct
> definitions of \insertMPfile in supp-mps.tex (the version documented
> in the metafun manual) versus the one in in meta-ini.tex (the
> version that is actually used).

indeed, a substantial speed optimization -)

so ... i need to change the metafun example to use scaling instead

Hans

Re: Metafun example doesn't work

[Hans Hagen]

Taco Hoekwater wrote:

> Hi David,
>
> To me it looks like it does work, but perhaps I am not looking
> at it correctly. Here is what I compiled:
>
>   \setupcolors[state=start]
>   \setupoutput[pdftex]
>   \starttext
>   \startMPgraphic
>   draw unitsquare
>     xscaled 5cm yscaled 1cm
>     withpen pencircle scaled 2mm
>     withcolor .625 red;
>   \stopMPgraphic
>   \hbox\bgroup
>   \loadcurrentMPgraphic{width=5cm,height=1cm}\placeMPgraphic\quad
>   \loadcurrentMPgraphic{width=8cm,height=1cm}\placeMPgraphic\egroup
>   \stoptext
>
> And I get a red outline around two rectangles next to eachother.

 i will change that example (or maybe some other low level code -)

Hans