Alex... thanks... this is better, yes, but there is still the
"twinkling" of pixels everywhere as it zooms in... if i open the same
photo in iMovie and run a Burns effect zoom on it... it is absolutely
smooth... Actually the "twinkle" effect would be a good for thing for
children... but pros will sneer at it...
I would be interesting in understanding the fundamental differences
from the "video physics" between the two technologies.. the Rev
script is obviously just doing simple geometry...
I wonder how a movie technology differs...
Am I asking too much to try to get the same thing in Revolution? (I
expect so...) My whole endeavor here is to avoid a heavy weight QT
app for light weight internet delivery.
On May 17, 2006, at 12:59 PM, Alex Tweedly wrote:
For images that are close to square, this "drift" won't be obvious
- but I think it will make the zoom less smooth.
You can avoid that by calculating the revised height, and then
centering that around the height.
function zoomIn tRect
put tRect into saferect
subtract 1 from item 1 of tRect
add 1 to item 3 of tRect
put ( (item 3 of tRect - item 1 of tRect) * tRatio) / 2 into
tNewHalfHeight
put (item 2 of tRect + item 4 of tRect) / 2 into tNewCentre
put tNewCentre - tNewHalfHeight into item 2 of tRect
put tNewCentre + tNewHalfHeight into item 4 of tRect
put saferect && tRect & cr after msg
return tRect
end zoomIn
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