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Activity Forums Adobe After Effects Expression and CC cylinder

  • Expression and CC cylinder

    Posted by Tom Dempsey on December 11, 2012 at 7:37 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

    John Cuevas replied 13 years, 8 months ago 2 Members · 3 Replies
  • 3 Replies
  • John Cuevas

    December 11, 2012 at 8:21 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.

  • Tom Dempsey

    December 11, 2012 at 8:54 pm

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

    tomd

    tom dempsey

  • John Cuevas

    December 11, 2012 at 9:05 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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