Head turn with switch layers
Posted: Sat Jan 12, 2008 9:56 am
Here's a little experiment I just did playing with switch layer interpolation to do a head turn. (I'm sure this is not original, but hey, I discovered for myself!
)
http://fiziwig.com/switch_turn.swf to view the animation
http://fiziwig.com/switch_turn.anme to download the file.
Of course the two switch layers must have the same number of points, but I discovered that with switch layers it is absolutely critical that the points be drawn in the same order, from the same starting point.
I copy/pasted a head into a switch layer, tested the turn, which worked fine, but then accidentally deleted a point. No problem, right? just insert a new point in the same spot to fix the shape. No good. The points were all out of order and the interpolation looked like something that would make Picasso sit up and take notice. I found a way to fix it when that happens, but it a little to involved for a short post. I'll put it in tomorrow's tutorial.
On the other hand, deliberately deleting and then re-inserting a point can lead to fun fun effects where a shapes blows up!
--gary

http://fiziwig.com/switch_turn.swf to view the animation
http://fiziwig.com/switch_turn.anme to download the file.
Of course the two switch layers must have the same number of points, but I discovered that with switch layers it is absolutely critical that the points be drawn in the same order, from the same starting point.
I copy/pasted a head into a switch layer, tested the turn, which worked fine, but then accidentally deleted a point. No problem, right? just insert a new point in the same spot to fix the shape. No good. The points were all out of order and the interpolation looked like something that would make Picasso sit up and take notice. I found a way to fix it when that happens, but it a little to involved for a short post. I'll put it in tomorrow's tutorial.
On the other hand, deliberately deleting and then re-inserting a point can lead to fun fun effects where a shapes blows up!
--gary