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Expression and CC cylinder

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Tom Dempsey
Expression and CC cylinder
on Dec 11, 2012 at 7:37:23 pm

Hi,

I'm hoping someone can guide me in the right direction. I have an effect (CC cylinder) that is rotating
at a consistent speed throughout a segment. At certain moments, I'd like to speed up the rotation to match some dialog. I'm accustomed to parenting with a null when i use 3d rotation, but how do i do something
similar with CC cylinder. Using additional keyframes in CC cylinder is not working well.

thanks,

tomd

tom dempsey


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John Cuevas
Re: Expression and CC cylinder
on Dec 11, 2012 at 8:21:42 pm

This method adds keyframes to another layer, but will leave your original effect/keyframes alone. I added a null and added the effect > Expressions Control > Angle Control(you don't really need to add the null, I just think it's a little cleaner). Then I added this expression to the rotational property of the cylinder:

value + thisComp.layer("Null 1").effect("Angle Control")("Angle")

That takes the current value of the rotation and adds the value from the null.

Here's a simple project to illustrate: 5068_valueexpressionfolder.zip

Johnny Cuevas, Editor
Thinkck.com

"I have not failed 700 times. I have succeeded in proving that those 700 ways will not work. When I have eliminated the ways that will not work, I will find the way that will work."
---THOMAS EDISON on inventing the light bulb.


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Tom Dempsey
Re: Expression and CC cylinder
on Dec 11, 2012 at 8:54:25 pm

Wow. that was very helpful. thank you so much.

tomd

tom dempsey


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John Cuevas
Re: Expression and CC cylinder
on Dec 11, 2012 at 9:05:06 pm

No problem, glad to do it.

Johnny Cuevas, Editor
Thinkck.com

"I have not failed 700 times. I have succeeded in proving that those 700 ways will not work. When I have eliminated the ways that will not work, I will find the way that will work."
---THOMAS EDISON on inventing the light bulb.


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