5.5

1318Motion User Guide
3D groups and rasterization
The next pair of images shows the effect of rasterization on the intersection of 3D groups.
In the left image, the nonrasterized example, two groups (Group A and Group B) containing
rectangle shapes intersect in 3D space. In the right image, Group A is rasterized;
consequently, Group A and Group B no longer intersect.
How rasterization affects basic text in Motion
Rasterization affects how basic text interacts with other objects in your project.
If a text layer in a nonrasterized 2D group is set to a blend mode, such as Soft Light,
it interacts with images in groups beneath it in the layer stack. After the 2D group is
rasterized, the Soft Light blend mode no longer interacts with the layer beneath it.
Tip: In this case, moving the image into the group that contains the text eliminates the
rasterization issue.
Sometimes, text is rasterized independently of the group in which it resides, and that
rasterization affects how the text interacts with objects in its own group. For example,
applying a Circle Blur filter to basic text that exists in 3D space (such as text on a path)
causes the text to no longer intersect with other objects in the same group.
How rasterization affects 3D text and 3D objects in Motion
When rasterized, 3D text and 3D objects are converted into bitmap images, which changes
how they intersect with each other and interact with other objects in your project. 3D text
and 3D objects can be rasterized independently of the group in which they reside.
The same operations that cause a 3D group to rasterize cause 3D text and 3D objects to
rasterize. Consider the following rasterization guidelines when working with 3D text or
3D objects:
• 3D objects intersect only with like objects. In other words, 3D text objects intersect only
with other 3D text objects, and 3D objects intersect only with other 3D objects.
• When a 3D group containing 3D text or 3D objects is rasterized, the group as a whole
can no longer intersect with objects outside the group. The rasterized 3D group
is treated as a single object and uses layer order, rather than depth order, when
composited in the project.