> On Dec 18, 2017, at 11:05 AM, A Mauer-Oats <mauero...@gmail.com> wrote:
> I recently came across the following behavior in big-bang that was new to me.
> I am writing in case I have misunderstood something.
> 1. (stop-with model) does not run the draw handler one last time 
> (this is documented but I'm not sure why this choice was made)

I can’t find this in the documentation. It promises the same properties as 
stop-when (based on my reading). 

> This means that a conditional in the draw handler cannot be used to draw a 
> "win screen".
> 2. (stop-when predicate? final-draw-handler) 
> the final-draw-handler runs at the stop of the animation, even if predicate? 
> does not cause the animation to stop

I don’t know what you mean by this last sentence. If predicate? is never true, 
the final-draw-handler won’t be called. 

> The final-draw-handler is a fine creation. 
> If we had access to it without the predicate? then students could use 
> stop-when and get their win screen drawn without any extra baggage.
> For example:
> (to-draw ...)
> (to-draw-final ...)
> In addition, perhaps there could be an option / default of making the final 
> draw handler be the same as the ordinary draw handler.

In my experience, the last picture shows something rather different than the 
regular one. (With apologies to McMurtry.) 

I will think about this and come up with a solution. — Matthias

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