Since

17.0

Vellum simulations consist of both geometry an constraints. To make it easier to work with, they can be packed into a single geometry using a Vellum Pack SOP. The Vellum Unpack SOP undoes this operation.

If merges have combined multiple simulations, they will be properly collated and merged in the output. The vellum_type string attribute is used to detect this, so should be preserved.

If multiple objects are unpacked, weld and branchweld attributes will be updated to track the new point numbers. Note that id attributes are not currently updated properly.

Any name attribute on the packed primitives will be copied into the contents, allowing one to track where the unpacked geometry came from

Parameters ¶

Transfer Attributes

Specifies a list of attributes to transfer to the unpacked geometry.

Transfer Groups

Specifies a list of groups to transfer to the unpacked geometry.

Update Rest State

If the packed geometry was transformed or scaled, the stored rest state will be incorrect after unpacking. This will recompute the rest attributes from the unpacked geometry. This will erase any differences between rest & initial geometry that may have been intentionally created, however.

Enforce Unique Name Attribute per Instance

When unpacking multiple merged Vellum packed instances, the geometry’s name attributes may result in unwanted duplicates. This appends a “-” and instance number to the name attributes.

See also

Vellum Pack