Home / Articles / Adobe After Effects / Building 3D Objects in Adobe After Effects CS5

Building 3D Objects in Adobe After Effects CS5

Nesting a 3D composition

You’ve set up the environment for the 3D objects that you created earlier: the book and the text. The Book composition contains all the elements of the book. You’ll add that composition to the Final Comp composition, and then select the Collapse Transformations switch so that it behaves as a 3D layer.

  1. Click the Project tab to display the panel. Then drag the Book composition from the Project panel to the Final Comp Timeline panel, placing it at the top of the layer stack.

    The Book composition doesn’t show up, because it’s not yet a 3D layer.

  2. Click the Toggle Switches/Modes button at the bottom of the Timeline panel to display switches.
  3. Select the 3D Layer switch (3d.jpg) for the Book layer to convert it to 3D.

    The Book composition appears in the Composition window, but only the front cover appears to be included. When you nest a 3D composition in another composition, you need to select the Collapse Transformations switch for the layer. Otherwise, the composition is rendered as a 2D layer, and does not interact with 3D layers.

  4. Select the Collapse Transformations switch (transformations.jpg) for the Book layer.

Now the entire book appears, just as you created it. If you change Rotation property values, the entire object rotates, rather than individual layers. The guide layer is not visible in the nested composition.

7. Adding a camera | Next Section Previous Section