Houdini 20.0 Nodes TOP nodes

Node Pattern TOP node

Creates work items based on matched nodes.

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Since 19.0

You can use this node to create work items for nodes that match a pattern. The node uses the same pattern matching logic as the network editor’s Find window. For example, the pattern box* matches nodes that begin with the name box.

The names, paths, category, and node type for each matched node are stored as attributes on the work items produced by this node.

The pattern is applied relative to a root node, is specified using the Root Node parameter, and can be applied recursively to child nodes.

TOP Attributes

nodecategory

 str

The operator type category name. For example, SOP or TOP.

nodename

 str

The name of the node. For example, genericgenerator1.

nodepath

 str

The full path to the node. For example, /obj/geo1/box1.

nodetype

 str

The name of the node’s operator type. For example, torus or box.

Parameters

Generate When

Determines when this node will generate work items. You should generally leave this set to “Automatic” unless you know the node requires a specific generation mode, or that the work items need to be generated dynamically.

All Upstream Items are Generated

This node will generate work items once all of the input nodes have generated their work items.

All Upstream Items are Cooked

This node will generate work items once all of the input nodes have cooked their work items.

Each Upstream Item is Cooked

This node will generate work items each time a work item in an input node is cooked.

Automatic

The generation mode is selected based on the generation mode of the input nodes. If any of the input nodes are generating work items when their inputs cook, this node will be set to Each Upstream Item is Cooked. Otherwise, it will be set to All Upstream Items are Generated.

Root Node

Specifies the root node that the Node Pattern is applied to.

Node Pattern

Specifies the pattern to use when matching nodes. This parameter uses the same pattern matching logic as the network editor’s Find window.

Sort Nodes By

Determines how the list of nodes is sorted.

None

The nodes are left unsorted. When a specific order is not needed, this option is marginally faster because it doesn’t need to sort the list of matched nodes.

Node Name

The nodes are sorted alphabetically by name. It is possible for multiple nodes to have the same name. For example, like when the nodes are in different subnets and Recursive is on. In this case, it would probably be more appropriate to use sort by Node Path since the node path is always unique.

Node Path

The nodes are sorted alphabetically based on their full file path.

Recursive

When on, the pattern is applied recursively to subnets inside of the root node.

Split Results into Separate Work Items

When on, one work item is created for each matching node. When off, a single work item with all node paths is created.

Inherit Upstream Work Item Index

When Split Files into Separate Items and this parameter are both on, generated work items will inherit their upstream work items' indices. When this parameter is off and Split Files into Separate Items is on, the work items' indices are based on the node’s position within the list of matched nodes.

See also

TOP nodes