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Activity Forums Adobe After Effects Expressions Expression to change Mask Bounding box values

  • Expression to change Mask Bounding box values

    Posted by Adam Levine on March 23, 2016 at 9:16 pm

    I’ve created circular mask on a solid layer. I want to change change left, top, right, bottom values of the bounding box of the mask (In Mask path; Shape properties) using slider control. Is it possible to that?
    Thank you.

    Miguel De mendoza replied 10 years, 1 month ago 2 Members · 1 Reply
  • 1 Reply
  • Miguel De mendoza

    March 25, 2016 at 10:26 am

    No, you cant acces mask sha attributes by expressions. Maybe you achieve something similar by precomping a solid with the mask shape you want, put it above the layer you want to mask and make an alpha trak mat. The you can control the scale values of your matte with a slider.

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