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Activity Forums Adobe After Effects A way to do a ramped Reshape?

  • A way to do a ramped Reshape?

    Posted by Sam Mattson on June 25, 2014 at 7:57 pm

    I have a reshape that I want to happen from the top down.
    Normally a reshape happens all at once, so going from a square to a circle happens to the entire image.
    I want it to happen from the top down, so the mid shape looks like a square bottom with a rounded top.
    Like if I were to combine reshape with linear wipe, but I want it to be a smooth reshape keeping linear continuity and not just fade pixels like linear wipe would provide.

    Sam Mattson replied 11 years, 10 months ago 2 Members · 3 Replies
  • 3 Replies
  • Kevin Camp

    June 26, 2014 at 12:03 am

    you could play around with the time displace effect. it will displace time based on the luminance of a layer map. so you could use a simple gradient to have the morph start at the bottom and end at the top.

    it may not give you quite what you want, but i think you could get close.

    your morphing square-circle will need to be precomped, then create a shape layer with a gradient fill and adjust the gradient to go top-to-bottom.

    apply the time displacement effect to the precomp, select the shape layer as the layer map and adjust the displacement time to see if you can get what you need.

    i think if you animate the displacement time to start at 0 when the morph starts, then increase to the duration of the morph at the midpoint, then back to zero at the end of the morph, you’ll be close…

    ex: say your morph from square to circle is 4 seconds. on the first frame set the time displacement to 0, at the 2 second mark, set it to 4 and ad the 4 second mark set it back to 0.

    Kevin Camp
    Art Director
    KCPQ, KZJO & KRCW

  • Sam Mattson

    June 26, 2014 at 2:59 am

    Thanks Dave, I’ll be animating the mask path. Thought there had to be an easier way. 🙂

  • Sam Mattson

    June 26, 2014 at 3:21 am

    I have severely underutilized this effect. It’s damn close to what I’m looking for and with a little warp effect on top will do just what I want. Thanks!

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