Programmatically set progress?

[amr3k]

Hi, thanks a lot for this great library, I was wondering if it's possible to set the transition progress programmatically.. in case of a touch swipe, or hover before/after effect like this one:

GLSlideshow_progress.mp4

[amr3k]

Update:
I was able to do that with:

slideshow._progress = 0.23;
slideshow._hasUpdated = true;

Of course typescript compiler was complaining so I had to @ts-ignore it 😃

However, it'd be better to expose a function that allows to set the progress value e.g function setProgress(value:number) {...}