group 3d layers in one so you can manipulate

[Nate Hanson]

Try clicking the “Collapse Transformations” button (looks like a sun, between the Shy and Quality buttons) for your precomposed layer. This should allow everything in the precomp to respond to the camera in the main comp instead of looking like a flat layer.

Nate Hanson
Pilothouse Films

[Ilcho Bogdanovski]

tnx for the response Nate but unfortunatly its not working.I did try it before and its stiil a flat image. imean i dont get it.why does it become flat image.i have 2 layers and they are 3d and when you precompose them they become flat.I still dont get it but tnx for trying helping me

[Darby Edelen]

Are you sure your layers are 3D? 3D effects (effects that respond to the AE camera) that are applied to 2D layers will not work properly when pre-composed even if transformations are collapsed. Furthermore, these 3D effects should not be applied to 3D layers.

Every 3D particle system I’m aware of works this way, and you’ll most definitely have to figure out a way to do this without pre-comping the particle system layers.

Darby Edelen

[Ilcho Bogdanovski]

whell i think i did find a solution for this problem. When you precompose all of the layers in one composition they dont become flat, insted of precomposing just the particles layers.they respond to the null 3d layer and now its ok.What it means is i have my 3d project set in one composition and i can trim it whitout some of my layers becoming flat.Tnx a lot people for your help and for posting some opinions.Regards ile

[Bartek Skorupa]

I’d like to suggest yet another solution:

Let’s say you have some 3d layers, and some 2d layers with 3d effects applied to them.
The 3d effects applied to 2d layers use comp camera. Let’s say your camera in the main comp is called “camera 1”

You want to have all of your 3d layers together with 2d layers with 3d effects pre-composed. You also want your 3d layers and 3d effects on 2d layers being affected by “camera 1”.

You can do as follows:

1. Precompose the layers.
2. In the newly created composition – add camera (“camera 2”).
3. Using expressions tell “camera 2” to use transform data of “camera 1”
4. Collapse transformations of your pre-Comp.

Now whatever you do with “camera 1” will affect the “camera 2” in your pre-comp.
Collapsing transformation will tell all of your pre-composed 3d layers to ignore the “camera 2” data, but the 3d effects on 2d layers will be affected by “camera 2”
As “camera 2” is moving exactly like “camera 1” – you control everithing without having to go into your pre-comp.

Bartek Skorupa
Warszawa, Poland

[Ilcho Bogdanovski]

tnx for the suggestion mate.i will certanly try and see what resault i will get.Tnx again ile