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squirreltown
Roku Guru

screensaver position

I'm using a modified audioapp/SDK screensaver to show images. What i would like is for the images (landscape rectangles) to not go off the edge, rather bounce around within the screen border. There is only this one control:
 canvas.SetUnderscan(.07)
which seems to affect it but

1) I can't understand what the number means - it might to be a percentage with 1.0 being 100%, but cant really confirm that.
2) the "random" locations seem to favor the bottom part of the screen (1080p) and never go off the upper edge.

Anyone know what the (.07) is actually referencing ?

Also, there is a comment in the screensaver.brs file about how "smooth animation" doesn't work unless you download the file to /tmp etc. So I did that, and it still jumps around, there is nothing "smooth: about it - it jumps from one location to another albiet in a straight path. If you set
 canvas.SetUpdatePeriodInMS(200)
to say(10) it makes the steps really small (and slooows down the track) but its still jumping from one place to another, no "smoothness". So is "smooth" possible?

Thanks
Kinetics Screensavers
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