Hi Aditya,

 

Actually, they should have the same boundingbox, the first MPdrawing environment draws a line from (0,0) to (2cm,2cm) and the sequence MPdrawing environments just add two lines that are in the previous boundingbox.

 

I know what's happening now. \definesymbol doesn't define a symbol from \getMPdrawing at once. 

 

On 6/8/07, Aditya Mahajan <adityam@umich.edu> wrote:

On Fri, 8 Jun 2007, Zhichu Chen wrote:

> Hi,
>
> I've written the following test file:
>
> ======================
> \setupcolors[state=start]
> \setuppagenumbering[state=stop]
> \setupinteraction  [state=start]
>
> \starttext
>
> \MPdrawingdonetrue
>
> \startMPdrawing
> draw (0,0)--(2cm,2cm);
> \stopMPdrawing
> \definesymbol[aa][\getMPdrawing]
>
> \startMPdrawing
> draw (2cm,2cm)--(2cm,0);
> \stopMPdrawing
>
> \definesymbol[bb][\getMPdrawing]
>
> \startMPdrawing
> draw (0,0)--(2cm,0);
> \stopMPdrawing
>
> \definesymbol[cc][\getMPdrawing]
>
> \definefieldstack[somemap][aa,bb,cc][height=fit,width=fit,frame=on]
>
>
> \fieldstack[somemap]
> \goto{here} [JS(Walk_Field{somemap})]
>
> \stoptext
> ======================
>
> It seems that the fieldstack does not work. Is there anything wrong?

I haven't tested this, but I think that all elements in the fieldstack
should have the same bounding box. Look at the widget manual, where
Hans shows how to make sure that all elements have the same bounding
box.

Aditya
___________________________________________________________________________________
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
___________________________________________________________________________________