This node converts hair to alembic primitives suitable for import into Unreal Engine. The output format matches the specification described here: Alembic for Grooms Specification
Parameters
Groups
Output Groups
Output group identifiers.
Group Identifier
The type of group identifier to output. UE4 only supports ids. UE5 adds support for named groups.
Group Id
Output a basic integer id. Note that Unreal Engine simply creates a group for each unique value found and numbers them starting at 0. Whether you have group 0, 1, 2 or 1000, 2000, 3000 in Houdini - in Unreal engine you’ll get 0, 1, 2 regardless.
Group Name (UE5)
Output named groups. Only supported starting with UE5.
Group Id Attribute
The houdini attribute to use as the integer group id.
Group Name Attribute
The houdini attribute to use as the group name.
Color
Output Color
Output a color attribute
Color Attribute
The name of the color attribute to use.
Output Guide Ids
Output Ids
Output per-hair ids.
From Attribute
Use an attribute for per-hair ids. When this is disabled, the primitive number is used as the id.
Id Attribute
The houdini attribute to use for per-hair ids.
