I have a memory of one of Grants videos showing how to use an open 3dShape as a soft edged mask within action, then using it to apply a lighting effect along the outline of a car…but i can’t find it, nor can i figure out how to use the shape as a gmask within Action.
I can make the shape, add the softness but i cannot get it to behave like a mask.
In Action, start drawing your 3D shape. To create the open spline, click the FINISH button to the right of the UI. At this point it will just look like an invisible gmask spline. In the Gmask menu, Click ADD for softness or press SHIFT+A. This will create an open Gmask Shape with a solid edge. To soften the edge, Go to the 3D Shape controls and set the Gmask Transparency to FOR 3D SHAPE ONLY. This will give you a 3D shape with softened edges as requested.
thanks Grant - i got that far - its after that where i get stuck - i wanted to take two copies of an input - give one a colour treatment, then use the 3d shape to reveal that treatment over the clean version of the plate.
Everything i tried just applied the white shape on top of the image and didn’t behave as a gmask would, even when using the gmask link.
In my example, I am using the Gmask to cut a hole through the green layer to reveal the layer behind.
If you wanted the Gmask to act as a matte for the green layer instead of cutting a whole through it, just invert the mask.
As you can see, you do need to focus the Gmask Link on the target image surface and I would also check the priority editor in Action to ensure the green layer is on top of the background layer. Otherwise nothing will happen.