Adobe After Effects Forum
Creating 'outer roundness' for rectangle shapes.
Creating 'outer roundness' for rectangle shapes.
by Amir Aizat on Aug 13, 2019 at 10:45:59 am

Hi, I've been trying to figure out how to create this outer roundness shape in After Effects, but I can't find an efficient way to do so. What's a good way to create this shape in AE? I've tried Simple Matte Choker but it's hard to get a predictable result.




Re: Creating 'outer roundness' for rectangle shapes.
by Cassius Marques on Aug 13, 2019 at 1:38:16 pm

You can use rounded rectangles in shape layers. Combining them with mask modes.

Cassius Marques
www.zapfilmes.com


Re: Creating 'outer roundness' for rectangle shapes.
by Amir Aizat on Aug 14, 2019 at 9:05:07 pm

Hi Cassius,

I was thinking of the same thing, but I have this issue:

https://imgur.com/Z2RaHt0

It's at the end of the gif, where the connected illusion breaks.

The problem with masks I'm facing so far is that it's not good enough, at least to my knowledge, to maintain this illusion of continuity at smaller gaps.


Re: Creating 'outer roundness' for rectangle shapes.
by Cassius Marques on Aug 15, 2019 at 11:54:36 am

I can see the problem, but with AE that's what you get. Unfortunately as far as I know we don't have access to a plugin that rounds masks.

But I'm sure you can correct that issue, at least visually so your animation works.

Good luck.

Cassius Marques
www.zapfilmes.com


Re: Creating 'outer roundness' for rectangle shapes.
by Amir Aizat on Aug 16, 2019 at 8:55:49 am

Hi Cassius,

Thanks for your help, I settled for a compromise using Math.max(). Both boxes will become the same size if the gap is too small. It's a bit of a hassle to set up with more than 2 boxes, but it is doable.

It works and performs surprisingly well given the amount of expressions involved.





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