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Activity Forums Adobe After Effects Expressions Wiggle transparency of multiple objects

  • Wiggle transparency of multiple objects

    Posted by Jonan Grobler on June 1, 2014 at 8:47 am

    Hi there,

    I have a little question for all you learned people out there.

    I have this image from Adobe Illustrator:

    and what I want is for all dots to be wiggling transparency at variable rates (ie, I do not want all the dots to be fading up and down together).

    The solutions I know are a) mask out each dot, and wiggle the transparency of each mask, b) put each dot into a separate layer in Illustrator, import into AE as a comp and then wiggle the transparency of each layer.

    Both these solutions are ridiculously time-sapping. Having to break that many dots into separate layers will take me forever. Or creating so many masks, is ridiculous.

    I thought this might be a solution:
    https://forums.creativecow.net/readpost/227/12425#reply_box
    but it’s not really what I’m looking for.

    I’m sure someone smart out there knows some expressions I can make us of. At least, I hope so!

    Thank you in advance.

    Kind regards,
    Jonan

    Jonan Grobler replied 11 years, 11 months ago 4 Members · 5 Replies
  • 5 Replies
  • George Goodman

    June 2, 2014 at 1:55 pm

    If they are on separate layers in your ai file, you can right click and choose create shapes from vector layer. Then you can wiggle the opacity of each shape inside the shape layer. The way I would go about this would be to manually open the first shape, add the expression it, then right click that shape, copy expression only, then select all of the remaining shapes and paste.

    “|_ (°_0) _|”

    Sincerely,

    George

    http://www.vimeo.com/georgegoodman
    http://www.linkedin.com/in/georgefranklingoodman

  • Ramon Peppelenbos

    June 2, 2014 at 3:28 pm

    If you got trapcode form, you can rebuild it in form (make every dot a particle) and randomize/wiggle the opacity with form.

    Regards,

    Ramon Peppelenbos

  • Jonan Grobler

    June 2, 2014 at 5:21 pm

    Hi George,

    I was hoping to skip taking the illustrator file and turning all the dots into separate layers, as that will be quite a few man hours. I was hoping that there would be some solution to do with Auto-Tracing a layer, and then an expression that I apply on the top mask which affects all the masks underneath.

    I also had hopes for the Vegas effect – I can get something like a mask out of the Vegas effect, but I’m still stuck without a random transparency wiggle.

    Thanks anyways!

    Jonan Grobler
    Editor/Motion Graphics

  • Kevin Camp

    June 2, 2014 at 9:14 pm

    if your dots are separate from the green background, i think fractal noise and mosaic could work as a track matte for the dots.

    the trick is getting the mosaic grid to match the dot grid. then you can animate the fractal noise properties to animate the opacities of the dots.

    Kevin Camp
    Art Director
    KCPQ, KZJO & KRCW

  • Jonan Grobler

    June 3, 2014 at 6:35 am

    Thanks a bunch! This is exactly what was required. It takes a little trouble to get the mosaic effect to line up, but when it does, I get exactly the effect I’m looking for. Once again, thanks a bunch.

    Jonan Grobler
    Editor/Motion Graphics

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