Appendix a: about rasterization, Groups and rasterization, About rasterization – Apple Motion 4 User Manual
Page 1389: Groups and, Rasterization, Groups, And 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. This affects
how the rasterized group interacts with other objects in the project.
This appendix covers the following:
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Groups and Rasterization
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. 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 when composited in the
project.
For more information on layer order versus depth order, see
.
Note: When a group is rasterized, cameras and lights in the project still interact with
objects within the rasterized group.
Important:
Lighting in a 2D group does not pass beyond the boundaries of that 2D group,
whether it is rasterized or not.
The following operations on a 2D group trigger the rasterization of that group:
• Making Blending changes (to the Opacity, Blend Mode, or Preserve Opacity parameters)
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