User Manual

Alembic Import Dialog
An Alembic Import dialog is displayed once you select the file to import.
The top half of the Import dialog displays information about the selected file including the name
of the plug-in/application that created the Alembic file, the version of the Alembic software
developer kit used during the export, the duration of the animation in seconds, if available, and
the frame rate(s) in the file.
Alembic Import options
Various objects and attributes can be imported by selecting the checkboxes in the
Import section.
 Hierarchy: When enabled, the full parenting hierarchy is recreated in Fusion using
multiple Transform 3D nodes. When disabled, the transforms in the Alembic file are
flattened down into the cameras and meshes. The flattening results in several meshes/
cameras connected to a single Merge node in Fusion. It is best to have this disabled
when the file includes animation. If enabled, the many rigs used to move objects in a
scene will result in an equally large number of nodes in Fusion, so flattening will reduce
the number of nodes in your node tree.
 Orphaned Transforms: When the hierarchy option is enabled, an Orphaned Transforms
setting is displayed. Activating this Orphan Transforms setting imports transforms that
parent a mesh or camera. For example, if you have a skeleton and associated mesh
model, the model is imported as an Alembic mesh, and the skeleton as a node tree of
Merge3Ds. If this is disabled, the Merge3Ds are not created.
 Cameras: When enabled, importing a file includes cameras along with Aperture,
Angles of View, Plane of Focus, as well as Near and Far clipping plane settings. The
resolution Gate Fit may be imported depending on whether the application used to
export the file correctly tagged the resolution Gate Fit metadata. If your camera does
not import successfully, check the setting for the Camera3D Resolution Gate Fit. Note
that 3D Stereoscopic information is not imported.
 InverseTransform: Imports the Inverse Transform (World to Model) for cameras.
 Points: Alembic files support a Points type. This is a collection of 3D points with position
information. Some 3D software exports particles as points. However, keep in mind that
while position is included, the direction and orientation of the particles are lost.
 Meshes: This setting determines whether importing includes 3D models from the
Alembic file. If it is enabled, options to include UVs and normals are displayed.
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