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Activity Forums Adobe After Effects Expressions Pendulum Dance in AE expression

  • Pendulum Dance in AE expression

    Posted by Raza Ahmad on April 15, 2013 at 6:12 am

    https://youtu.be/24Fkh6PcQoA

    I enjoyed watching this video about simple harmonic motion so I decided to use a spare beat this afternoon to build the system in After Effects.

    It’s a fairly stripped down system, ideal pendulums not physical, so no damping or decay. Built it with z-depth and a camera, but swap to front-view or turn the camera off for the Ortho projection (also very pretty).

    Most of the controls are bound to sliders in the Pin layer, including color randomizer, z-depth control, max amplitude, start at max vs. zero and some other stuff i can’t quite remember right now.

    If you want to modify the ball size, just delete Balls2-15, modify the solid size on ball 1, and then re-duplicate up to 15. If you don’t mess with anything else, it should reconnect itself properly to its designated string.

    String1-15 and Ball1-15 use index order (or index+expression) to determine their relationships to each other, so if you add a new layer at the top of the comp, the expressions will break until you re-order them and then return them to index 1-30 (and re-activate the expressions).

    Have fun, go wild. Do cool stuff.

    AE Project File:
    SimpleHarmonicPendulums_v001.aep (515kb, AE CS6)

    Gratitude: Dan Ebbert, Creative Cow, Wikipedia

    Music: Slick Cat by Carol Kaye and Joe Pass

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    Raza Ahmad replied 13 years, 1 month ago 1 Member · 0 Replies
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