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Chapter 1 3D Compositing 37
 Filters are applied to the group in view space. In other words, the filter affects the
group as if it was applied to the lens of the camera viewing the group.
 Its children are lit individually.
 Only a 3D group with the Flatten parameter enabled has the Crop, Drop Shadow,
and Four Corner parameters.
Rasterization
Some operations, as well as the application of certain filters or a mask, cause a group to
be rasterized. When a group is rasterized, it is converted into a bitmap image.
Rasterization affects 2D and 3D groups in different ways. When a 2D group is rasterized,
the blend modes on objects within the group no longer interact with objects outside of
the group. In addition, when a 3D group is rasterized, the group as a whole can no
longer intersect with objects outside of the group. The rasterized 3D group is treated as
a single object and uses layer order (in the Layers tab), rather than depth order (along
the Z axis), when being composited with the rest of the project’s elements.
Note: When a 3D group is rasterized, cameras and lights in the project still interact with
objects within the rasterized group.
Checkerboard in 3D group with Twirl filter applied from three different angles
Working with Objects Inside Flat Groups
When moving an object along its Z axis inside a flat group—which includes 2D
groups and flattened 3D groups—the object appears to grow larger or smaller rather
than move closer to or further away from the camera.
Should you be unable to find an object in your project, you can locate it by resetting
its Position parameter to 0, 0, 0. This centers the object in the flat group.
You can use the Isolate command to align the active view with the axis of the flat
group. This facilitates making adjustments to objects inside the group. For more
information on the Isolate command, see “Isolate” on page 30.