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3D layers Die
I have a number of comped 3D layers. Each layer has it’s own camera and each layer is set to view through that camera.
These 3D layers are brought into one comp that has no camera. The first 3D layer renders ok, but after that the 3D-ness just dies and they flatten.
I’d appreciate any thoughts
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4 Replies
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Not sure if this is your problem, but I’m guessing…
If you have collapse transofrmations turned on, the nested comps will ignore their internal camera, and use the main (or current) comps camera. What you are probably seeing is the result of all of the comps using the same camera which is looking at them head on.
Am I right?
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Aharon Rabinowitz
aharon(AT)yahoo(DOT)com
http://www.allbetsareoff.com
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Get rid of the cameras in the pre-comps and use the collapse transformation switch in combination with the 3D switch on them in your main comp. Without that, your pre-comps will simply be treated as 2D layers as viewed from the cameras.
Mylenium
[Pour Myl
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Aharon’s surmise, I think, is correct.
Every layer that has 3D has collapsed transforms on and 3D switched on. On their own layers they are fine. When I comp them in to teh final is when they die. At that point the precomped layer (I comp it all down to one) is not 3D but does have colapsed transform on. At that point I don’t want them 3D do I? I just want the active camera to look down at the layers wich are flats of 3D imagery. At least that is what I thought it was.
Am I wrong and if so where?
ACC
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There are 2 aspects to this.
If you bring a comp containing 3D elements into your comp it comes in a flat layer. AE looks at is as video of 3D movie – meaning the lemets apear to be 3D, but it;s an illusion, the layer is still flat. The layer cannot be rotated in 3D.
If you make this a 3D layer, it gets 3D coordinates and Axes (XYZ), and you can then rotate it in 3D, but it will still be a flat layer. AE is still looking at it as if it were a flat video containing 3D animation.
On the other hand, if you collapse transofrmation (but don;t make it a 3D layer), it becomes 3D – respecting the camera and lightsd (and ignoring it’s own internal cameras and lights in favor of the current comp’s lighting and cameras). Also, it is still using a 2D coordinate system. So while you can rotate around it with the camera, if you tried to move or rotate this layer/nested comp, you will find that it only has 2 dimensions for position (X, Y) and one for rotation.
Usually, when bringing in a nested comp containing 3D, you will want to turn on both collaps transformations and the 3D switch, which makes it a fully functional 3D layer that retains it’s 3D aspects and coordinates – minus the lights and cameras. In your case, it sounds like you’ve already set up your camera and now, becasue you collapsed transformations are losing that camera info.
Now, I assume that every camera is locked down (i.e., not rotating or moving) and set up exactly the same in every comp. If not, this solution won’t work: What you should do fo this kind of animation is use only 1 camera in your final comp. Turn on collapse transofrmations for every nested comp. If you want to be able to move them in 3D space, make them 3D as well.
Without seeing your project, and understanding what it is you are doing, this is the best advice i can give. Oh, yeah – that and – When doing anything this complicated plan ahead.
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Aharon Rabinowitz
aharon(AT)yahoo(DOT)com
http://www.allbetsareoff.com—————————————-
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