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