Am Samstag, 22. Juni 2024, 02:47:31 MESZ schrieb Aditya Mahajan:
> On Fri, 21 Jun 2024, Hans Hagen via ntg-context wrote:
> 
> > Hi,
> > 
> > -- support for stacking at the tex end (maybe for presentations)
> > 
> > \starttext
> > 
> > \definestacking[one]
> > \definestacking[two]
> > 
> > \startstackingsteps[one,two,{one,two}]
> >     \startTEXpage[offset=1ts]
> >         \getbuffer
> >     \stopTEXpage
> > \stopstackingsteps
> 
> I have crude macros which provide this features (save stuff in boxes and then unbox) for showing stuff stepwise in presentation (without relying on fancy PDF features which are viewer dependent). So, this new feature is very interesting. Thanks!
> 
> I use stackers in the following ways:
> 
> Case 1: Show stuff step by step
> 
> \startstackingsteps[1,{1,2},{1,2,3},{1,2,3,4}]
> 
> \startstacking[1]
> ...
> \stopstacking
> 
> \startstacking[2]
> ...
> \stopstacking
> 
> \startstacking[3]
> ...
> \stopstacking
> 
> \startstacking[4]
> ...
> \stopstacking
> 
> \stopstackingsteps
> 
> 
> Case 2: Show stuff step by step but some things are only shown once
> 
> \startstackingsteps[1,{1,2,2only},{1,2,3},{1,2,3,4}]
> 
> ....
> 
> \startstacking[2] % Show always after 2nd step
> ...
> \stopstacking
> 
> \startstacking[2only] % Show only during step 2
> ...
> \stopstacking
> 
> ...
> 
> \stopstackingsetps
> 
> Case 3: Show stuff step by step but some things are only for specific slides
> 
> \startstacking[2only,3only] % Show only during step 2 and 3:
> ...
> \stopstacking
> 
> So, I have a few requests:
> 
> 1. Can we add support for \startstacking[one,two]? 
> 
> 2. For case 1, could we have a shortcut to easily write \startstackingsteps[1,{1,2},{1,2,3}...]. This gets really tedious when there are say 6 or 7 steps. 
> 
>    One option is:
> 
>    \startstackingsteps[criterium={1,2,3}, alternative=normal] % or sequential
>     
>     for the current implementation
> 
>     and 
> 
>    \startstackingsteps[criterium={1,2,3}, alternative=cumulative]
> 
>    for the cumulative option (1,{1,2},{1,2,3}...)
> 
> 3. It will be nice to have a syntax to easily handle case 2 and 3. 
> 
> As a bonus, I found that tex stacking plays nicely with metapost stacking!
> 
> \starttext
> 
> \definestacking[1]
> \definestacking[2]
> \definestacking[3]
> 
> \startbuffer
> \subject{How to draw a circle}
> \startitemize
>     \startstacking[2] \startitem Pick a point \stopitem \stopstacking
>     \startstacking[3] \startitem Draw the circle \stopitem \stopstacking
> \stopitemize
> 
> \startplacefigure[location={here,none}]
>   \startMPcode[stacking={\namedstackingparameter\empty{criterium}}]
>     newpair A; A := origin;
>     newpath p; p := fullcircle scaled 3cm shifted A;
> 
>     fill fullcircle scaled 3bp shifted A withstacking 2;
> 
>     draw p withstacking 3;
> 
>     setbounds currentpicture to bbox p ;
>   \stopMPcode
> \stopplacefigure
> \stopbuffer
> 
> \startstackingsteps[1,{1,2},{1,2,3}]
>      \startTEXpage[offset=1ts]
>          \getbuffer
>      \stopTEXpage
> \stopstackingsteps
> \stoptext
> 
> Thanks,
> Aditya

Sorry, I did not read your answer before writing an own. See my other mail, it has much in common with yours.

Gerion