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expand corner pin
Hello All,
I am running into some problems with corner pin. I used Mocha for a planer track ( of a monitor ) and imported into AE. The effect I want is to fly through the footage into and through the tracked image. To do this created a precomp with elements in Z space, collapsed the transforms in the main comp, then applied the Corner Pin to the precomp. When I dolly through the comp using a camera everything works except the 3D elements in the precomp get cut off due to the corner pin effect. It seems I need a Lg precomp for this effect to work.
Ive tried a bunch of solutions with no success.
Is there a way to change the effective position of the pin.
for instance (on a precomp thats 2048×1536)have the top left corner pin’s starting position at (512,384) position instead of (0,0) and so on with the other pins? -
1 Reply
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Hi Dan,
could you create some screenshots, it’s a bit complicated to follow what you’re saying.
At it’s simplest, scaling a corner-pin to be larger than it is according to the keyframes can be done like described in this old post:
https://forums.creativecow.net/readpost/227/251
my solution back then involved calculating the average of the 4 corners, and then multiplying the difference so all points get pushed away from the center -> scaling up the corners
you might need different ways to calculate th emidpoint, Dan pointed me in the right direction here:
https://forums.creativecow.net/archivethread/2/518048
there’s a lot more discussion and some expressions if you search the forum for corner pin
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