[plt-scheme] embedding movies in slideshow presentations?

There isn't direct support for it, but you can kind of roll your own. 
You need two pieces. First, you need to use the `dc' primitive to 
create your pict, and have it depend on some external state (say the 
current step of the animation):

   (define step 0)
   (dc (lambda (dc dx dy) ... step ...))

Then, create a timer% object whose notify method periodically updates 
`step' and triggers a refresh of the slideshow window.

I think that this will almost work -- you'll want to do something 
special to start and stop the timer; you can do this with a clickable 
pict on the same slide somewhere.

If you are feeling ambitious and think you can work out a better way to 
support animations in slideshow, the code is in CVS -- have a whack at 
it.

hth,
Robby

On Aug 14, 2004, at 12:22 AM, Dave Herman wrote:

>  For list-related administrative tasks:
>  http://list.cs.brown.edu/mailman/listinfo/plt-scheme
>
> Is it possible to embed movies in slideshow presentations, perhaps by 
> embedding an arbitrary frame that executes an external program?
>
> Thanks,
> Dave
>
>