Switching between Alpa/Alpha Inverted with checkbox

[Tudor “ted” jelescu]

Not exactly- at least I do not now how to do it the way you describe, but here’s an alternative:
Add a Expression Control/SliderControl to your Null layer and lock the Effect Control panel. Open your Precomp and add Effect/Channel/Invert to the layer with Alpha. Link the “Blend With Original” control with the Slider Control. Now you can control the Alpha – at 100% you will get the layers alpha and at 0% the inverted alpha.

Hope this helps.

Tudor “Ted” Jelescu
Senior VFX Artist

[Vishesh Arora]

Igor

You can use Set Matte Effect for this function.

Instead of track matte, use set matte effect for each layer and then parent the Invert Matte checkbox to a controller’s Checkbox.

Here is an example:

5103_setmatteeffectwithcheckboxcontroler.zip

But I would suggest you to read about Set Matte Effect first.

Vishesh Arora
3D and Motion Graphics Artist
Films Rajendra

Blog:
https://digieffects.wordpress.com

Demo Reel(3D):
https://www.youtube.com/watch?v=lHPgIJU_BR8

[Igor Stikic]

Thank you, this helps!

Igor Stikic