Houdini Digital Asset Node

This node drives one Houdini Digital Asset (HDA). The node takes the HDA file path and asset name as inputs. When valid HDA file and asset name are used as inputs, a Houdini Node is created and the node inputs and outputs are dynamically updated to expose the HDA’s reflected inputs, outputs and exposed parameters.

Installation

To use this Node, you must enable omni.houdini_engine.omnigraph in the Extension Manager.

Inputs

Name	Type	Description	Default
hda_file_project_root	token
hda_file_path	string	The HDA File Path
hda_asset_name	string	The HDA Asset Name for that node
do_collect_all_geometry_attributes	bool	Collect all the primitive and detail attributes	True
geometry_attribute_names_to_collect	token	Command separated list of primitive attributes to collect.
trigger_node_cooking	bool	Trigger a cooking operation for this node	False
interactive_cooking	bool	Cook HDA node on every UI parameter change	False
use_builtin_hda_sources	bool	Search in the Houdini builtin assets when instantiating an asset based on the asset name. If checked, the input ‘hda_file_path’ is not taken into account when creating an asset.	False
interrupt_all_cooking	bool	This is used to force the interruption of all all the cooking operation that are currently happening in Houdini.	False
do_collect_all_detail_attributes	bool	Collect all the geometry detail attributes.	False
export_input_bundle_attributes	token	Extracts the value of specific input bundle attributes and forwards them to the proper output bundle.
exec_tick	int	Private field.	0
disable_all_node_cooking	bool	Disable all node cooking operations and cooking requests.	False
houdini_session_id	int	The id of the current session that this node should bind to.	-1
export_houdini_geometry_to_stage	bool	Instructs the node to directly create the prims from the HDA node cooking results. As a result the HDA output bundles are not populated with the mesh geometry content and the ‘created_mesh_prim_paths’ contains the paths of the created meshes/geometry.	False
export_houdini_geometry_config	bundle	Optional bundle that contains configuration parameter values used when exporting geometry

Outputs

Name	Type	Description	Default
node_absolute_path	token	The Houdini node relative path in the Houdini Engine Session.
status	int	The status of the node’s latest execution (during cook or compute()). 0 for success, > 0 for any failure.
operation_complete	bool	Is true if a node just completed a cooking operation.	False
cook_status	string	One of [NotStarted, Started, Cooking, Done], or an error string.	NotStarted
cooking_count	int	The number of cooking command that were issued by that node.	0
cooking_result_count	int	The number of cooking result that were retrieved/exported by that node.	0
houdini_node_id	int	Id of the current Houdini HDA instance bound to this node or -1.	-1
created_mesh_prim_paths	token[]	If the node is setup to directly export geometry from an HDA’s cooking results, this output contains the paths of all the meshes created by the node.