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Chnage colour of object once outside of layer behind it

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Victor Roos
Chnage colour of object once outside of layer behind it
on Jun 8, 2015 at 12:14:51 pm

Hello everyone

This might be a very easy question, I do recall seeing it somewhere.
imagine this. I have a red boat, in a white star, on a red background. The star moves to the left (to simulate movement of the boat) but now, the boat is in the red background, aka invisible.
I want that boat to become white, as soon as it reaches the red. But the aprt that is still on the star, had to remain red, till it also reaches the red background.

I tried googeling a lot, but simply wasn't able to put it in the right terms.

vkr, and hopefully you can help me

Victor


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Dave LaRonde
Re: Chnage colour of object once outside of layer behind it
on Jun 8, 2015 at 3:57:04 pm

duplicate the star and the boat. put them below the current layers. ause the fill effect to turn the lower boat white. make sure the duplicated star is on the layer above the duplicated white boat. use the duplicated star as a track matte for the white boat.

Dave LaRonde
Promotion Producer
KGAN (CBS) & KFXA (Fox) Cedar Rapids, IA


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Victor Roos
Re: Chnage colour of object once outside of layer behind it
on Jun 8, 2015 at 6:03:04 pm

First, thanks for the reply!
Track matte? I though I would be able ot understand that, but I'm not. Where am I supposed ot put the " red" boat then? because that is above the white star, but even after moving the white star, I still don't see a difference
The white boat should also be underneath the red boat, right?

I tried understanding this, but I don't see how I can use it?





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Victor Roos
Re: Chnage colour of object once outside of layer behind it
on Jun 8, 2015 at 6:10:01 pm

Also smart to add maybe, is that I want two things, moving from the inside of the white star, to the red side of the background, becoming white in the process.


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Richard Herd
Re: Chnage colour of object once outside of layer behind it
on Jun 8, 2015 at 6:27:13 pm

Try using blend modes: overall, add, and so on...


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