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Smooth anchor point interpolation

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Markus Hofko
Smooth anchor point interpolation
on Nov 26, 2009 at 8:59:29 am

Hi there,

I've got to animate some liquid shapes in AE.
I use the pen tool and animate a path by transforming it over several keyframes. Unfortunately this doesn't create a smooth movement.
The spatial interpolation can only be set on linear which might be the reason for this.





The individual anchor points just move straight from A to B and create kind of a bouncy feel.

Is there anyway around this? I can't believe those points can't be smoothed!

Thanks for your help.

Markus


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Sam Olesen
Re: Smooth anchor point interpolation
on Nov 26, 2009 at 10:30:50 pm

If you use a PC, then hold ALT and click the points.. this converts the points to bezier curves (smooth curves).


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Markus Hofko
Re: Smooth anchor point interpolation
on Nov 26, 2009 at 10:43:48 pm

No, that's not the problem.
I've got nice round shapes all way through.
But the ANIMATION bumps from keyframe to keyframe.
I just uploaded a little video to demonstrate what I'm talking about.
Needs to be approved first though.

Cheers

Markus


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Dave LaRonde
Re: Smooth anchor point interpolation
on Nov 27, 2009 at 6:17:22 pm

It sounds like you're encountering speed changes at keyframes. You might want to highlight the keyframes, right-click, and go into Keyframe Interpolation. Set the Spatial Interpolation to Bezier for that nice, smooth path you want, and Set Temporal Interpolation to Linear to get the smooth motion.

There's one more step to take: You need to set the keyframes to Rove Across Time. The command is in that same contextual Keyframe Interpolation menu you just used.




Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


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Markus Hofko
Re: Smooth anchor point interpolation
on Dec 7, 2009 at 12:36:42 am

Well, it's pretty much too late now as I made my way through thousands of keyframes. Anyway, I still can't believe there's no solution to this. I tried Flash, C4D, AE... they all do not interpolate anchor points. Sad world. Finally here's a video to kinda visualize what I've been talking about:


Cheers


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