Game Development Reference
In-Depth Information
Be aware that some 3D channels are unavailable in certain fi le
formats. And I should also point out that all the above fi le formats
are still image fi les. Currently, there aren't any video fi le formats in
After Effects that can store 3D channel data. If you do need to extract
data for a series of frames, use an image sequence.
In this chapter, we're going to be using an RPF fi le created in
3DS Max by a very talented 3D modeler, Kymnbel Bywater from
spilledinkanimation.com. Kymnbel meticulously set up this 3D
garage scene so that the 3D depth of the fi le was stored in it, as
well as object IDs, surface normals, and more (Fig. 2.1).
Using the Info Panel
The Info panel is
absolutely critical
to working well
with 3D channel data. It
can tell you the Z-depth
or other 3D channel
information while your
cursor hovers over your
image with the effect
selected.
Figure 2.1 The 3D garage scene
created by Kymnbel Bywater
that we'll be using throughout
this chapter.
The 3D Channel Extract Effect
The 3D Channel Extract effect helps you to extract 3D data
from a 3D channel. These results are then used in conjunction
with another effect.
Let's open up the 3D.aep project. I've created as an example for
these 3D Channel effects. Apply the 3D Channel Extract effect to
More on 3D in After Effects
You can also import Maya's MA scene format type. Cinema 4D can even output AEP fi les so that 3D elements in
the 3D environment, such as lights and cameras, can be animated and adjusted in After Effects. However, if you have
After Effects CS4 and Photoshop Extended, you can now import PSD fi les with live 3D layers and adjust the 3D objects
in 3D space in After Effects. In this chapter, we'll be looking at how to use 3D data with 2D layers. If we have a PSD fi le
from Photoshop Extended that has a 3D layer in it, it will retain all three dimensions.
 
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