If you import the Alembic file as an Alembic Archive object, it’s easy to use the Alembic render node to output the same hierarchy. You can use Houdini’s import and export support to merge existing archives into a new combined archives. In a scene with a large number of Alembic nodes which each contain a simple box as their shape node, it may be less efficient to re-build the entire Alembic tree in Houdini. Houdini’s objects can consume more resources than simple geometry. This will likely provide faster playback performance. Once the scene is loaded, only animated objects will be updated on frame changes and only objects with deforming geometry will be processed. Though all nodes are put into separate groups, large numbers of groups may be difficult to manage in Houdini.Īnimated geometry may be slower to process since the geometry must be deformed, rather than just loading new object transforms.Īttributes are shared across all objects.įor example, if only one object is missing uv coordinates, the Houdini geometry will still have uv coordinates, but the object will have invalid values. This is likely the fastest way to import static geometry. You can use File ▸ Import ▸ Alembic Scene in the main menus to quickly set up an Alembic Archive object. You can choose to replicate the Alembic hierarchy as Houdini subnetworks, or load all Alembic objects side-by-side. The object’s parameters have controls for building a network of Alembic Transform objects inside that represent the Alembic objects. Houdini can also “render” geometry and animation into an Alembic archive. Or load/display the geometry as boxes or points. Or load only the geometry inside a bounding box, When working with heavy data sets, Houdini provides methods for loading only part of the Alembic file at a time.įor example, you can load specific objects in the Alembic hierarchy, You can also load Alembic data as Houdini geometry, allowing you to edit the surfaces. You can apply geometry nodes to demand-loaded Alembic primitives that do not move points. The viewer can display geometry from an Alembic file without storing a copy in memory,Īnd mantra can “stream” geometry from an Alembic file instead of loading it all into RAM. Houdini supports demand-loading Alembic data. It was initially developed by teams from Sony Pictures Imageworks and Industrial Light & Magic. abc) files.Īlembic is an open interchange format for geometry and animation. Houdini supports loading and saving Alembic (.
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