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 # TubeSelectionRule

 Last update: 16.07.2026 

<a id="compolyx.TubeSelectionRule"></a>

### *class* compolyx.TubeSelectionRule(graph, obj, parent=None)

Represents a tube selection rule.

### Attributes

NameDescription[`TubeSelectionRule.active`](compolyx.TubeSelectionRule.active.md#compolyx.TubeSelectionRule.active)Active status of the object.[`TubeSelectionRule.changed`](compolyx.TubeSelectionRule.changed.md#compolyx.TubeSelectionRule.changed)Triggers an observable to dispatch a change notification.[`TubeSelectionRule.display_data`](compolyx.TubeSelectionRule.display_data.md#compolyx.TubeSelectionRule.display_data)The tube rule mesh plot.[`TubeSelectionRule.edge_set`](compolyx.TubeSelectionRule.edge_set.md#compolyx.TubeSelectionRule.edge_set)Edge Set for the Tube Selection Rule.[`TubeSelectionRule.enabled`](compolyx.TubeSelectionRule.enabled.md#compolyx.TubeSelectionRule.enabled)Indicates whether the object is enabled.[`TubeSelectionRule.extend_endings`](compolyx.TubeSelectionRule.extend_endings.md#compolyx.TubeSelectionRule.extend_endings)Whether to extend the ending of the edge.[`TubeSelectionRule.extent`](compolyx.TubeSelectionRule.extent.md#compolyx.TubeSelectionRule.extent)Extent of the rule.[`TubeSelectionRule.head`](compolyx.TubeSelectionRule.head.md#compolyx.TubeSelectionRule.head)Defines the head of the tube.[`TubeSelectionRule.head_extension`](compolyx.TubeSelectionRule.head_extension.md#compolyx.TubeSelectionRule.head_extension)Specifies the length of the extension at the head of the tube.[`TubeSelectionRule.id`](compolyx.TubeSelectionRule.id.md#compolyx.TubeSelectionRule.id)ID of the object.[`TubeSelectionRule.include_rule_type`](compolyx.TubeSelectionRule.include_rule_type.md#compolyx.TubeSelectionRule.include_rule_type)include type.[`TubeSelectionRule.inner_radius`](compolyx.TubeSelectionRule.inner_radius.md#compolyx.TubeSelectionRule.inner_radius)Inner tube-radius.[`TubeSelectionRule.is_closed`](compolyx.TubeSelectionRule.is_closed.md#compolyx.TubeSelectionRule.is_closed)Returns true if the edge set of this rule is closed.[`TubeSelectionRule.is_dict_item`](compolyx.TubeSelectionRule.is_dict_item.md#compolyx.TubeSelectionRule.is_dict_item)Indicates whether the object is an item in a dictionary.[`TubeSelectionRule.is_list_item`](compolyx.TubeSelectionRule.is_list_item.md#compolyx.TubeSelectionRule.is_list_item)Indicates whether the object is an item of a list.[`TubeSelectionRule.link_path`](compolyx.TubeSelectionRule.link_path.md#compolyx.TubeSelectionRule.link_path)Root path of the current node in the tree for links to this object.[`TubeSelectionRule.mesh`](compolyx.TubeSelectionRule.mesh.md#compolyx.TubeSelectionRule.mesh)The mesh of the tube rule.[`TubeSelectionRule.name`](compolyx.TubeSelectionRule.name.md#compolyx.TubeSelectionRule.name)Name of the object.[`TubeSelectionRule.nodes`](compolyx.TubeSelectionRule.nodes.md#compolyx.TubeSelectionRule.nodes)Returns the nodes of this tube as nx3 array including the extensions.[`TubeSelectionRule.outer_radius`](compolyx.TubeSelectionRule.outer_radius.md#compolyx.TubeSelectionRule.outer_radius)Outer tube-radius.[`TubeSelectionRule.parent`](compolyx.TubeSelectionRule.parent.md#compolyx.TubeSelectionRule.parent)Parent object in the tree.[`TubeSelectionRule.relative_rule_type`](compolyx.TubeSelectionRule.relative_rule_type.md#compolyx.TubeSelectionRule.relative_rule_type)relative type.[`TubeSelectionRule.root_path`](compolyx.TubeSelectionRule.root_path.md#compolyx.TubeSelectionRule.root_path)Root path of the current node in the tree.[`TubeSelectionRule.status`](compolyx.TubeSelectionRule.status.md#compolyx.TubeSelectionRule.status)Status of the object.[`TubeSelectionRule.status_changed`](compolyx.TubeSelectionRule.status_changed.md#compolyx.TubeSelectionRule.status_changed)Boolean flag which is set to true in C++ when up-to-date status of object changes.[`TubeSelectionRule.symmetrical_extension`](compolyx.TubeSelectionRule.symmetrical_extension.md#compolyx.TubeSelectionRule.symmetrical_extension)Whether the extensions are equal on both ends or not.[`TubeSelectionRule.tail_extension`](compolyx.TubeSelectionRule.tail_extension.md#compolyx.TubeSelectionRule.tail_extension)Specifies the length of the extension at the tail of the tube.[`TubeSelectionRule.uid`](compolyx.TubeSelectionRule.uid.md#compolyx.TubeSelectionRule.uid)UID of the object.[`TubeSelectionRule.vertex`](compolyx.TubeSelectionRule.vertex.md#compolyx.TubeSelectionRule.vertex)Raises an error if the object has been removed from the graph.### Methods

NameDescription[`TubeSelectionRule.find_parent`](compolyx.TubeSelectionRule.find_parent.md#compolyx.TubeSelectionRule.find_parent)(type)Steps up the tree and returns the first parent with given type.[`TubeSelectionRule.get_nodes`](compolyx.TubeSelectionRule.get_nodes.md#compolyx.TubeSelectionRule.get_nodes)()\* **Return:**  
 List of nodes that define the central line of the tube.[`TubeSelectionRule.get_short_description`](compolyx.TubeSelectionRule.get_short_description.md#compolyx.TubeSelectionRule.get_short_description)()[`TubeSelectionRule.obj_exists`](compolyx.TubeSelectionRule.obj_exists.md#compolyx.TubeSelectionRule.obj_exists)()Checks if \_\_obj still references the c++ object (has not been reset to None by self.\_delete) and exists in the graph.[`TubeSelectionRule.serialize`](compolyx.TubeSelectionRule.serialize.md#compolyx.TubeSelectionRule.serialize)()Serialize to Python string.[`TubeSelectionRule.serialize_name_and_id`](compolyx.TubeSelectionRule.serialize_name_and_id.md#compolyx.TubeSelectionRule.serialize_name_and_id)()Serializes the name and ID.[`TubeSelectionRule.serialize_rule_types`](compolyx.TubeSelectionRule.serialize_rule_types.md#compolyx.TubeSelectionRule.serialize_rule_types)()[`TubeSelectionRule.update`](compolyx.TubeSelectionRule.update.md#compolyx.TubeSelectionRule.update)()[`TubeSelectionRule.visit`](compolyx.TubeSelectionRule.visit.md#compolyx.TubeSelectionRule.visit)(visitor)Walk through the tree and let the visitor perform action on every descendant node.