9.5.2

1130 • CHAPTER 22
XPRESSO EDITOR • 1131
ObjectList
When you want to introduce a known number of objects into the expression, this node is often the
quickest way to do it. Drag and drop all the objects that you want the node to output from the Object
manager into the Iteration List box in the Attribute manager. Each time the node is called, the node
will output these objects one after the other, from the top of the list to the bottom.
The On input port takes a Bool value that enables (True) or disables (False) the node. The node is
enabled automatically if you do not add this port. The Count port outputs the total number of objects
in the Iteration List.
Selection
This node enables you to access Selection tags. The node outputs the index numbers of the points or
polygons in the Selection tag one after the other.
The following input ports are available:
 On: The On input port takes a Bool value that enables (True) or disables (False)
the node. The node is enabled automatically if you do not add this port.
 Tag: Connect the desired Selection tag (point, polygon or edge) to this
port.
The following output ports are available:
 Count: Outputs the total number of elements in the Selection tag. In the
case of edges, this value will actually be double the number of edges in the
tag. This is because the node will output the number of points that make up
the edges, not the actual number of edges.