Scripting: Accessing Scene Nodes

Accessing scene nodes (GUI and Headless)

The elements of the scene can be accessed via lux.getSceneTree() with each scene tree node being of the type lux.SceneNode. It is useful because for each node you can hide/show, lock/unlock, select/deselect, change material, apply transformations, duplicate, move and more. Try help(lux.SceneNode) for more information.

Let’s say you wanted to hide all nodes having “Cord” as part of their name:

>>> root = lux.getSceneTree()
>>> for node in root.find(name = "Cord"):
        node.hide()

Another example could be that you wanted to access all groups called “Padding” and selecting all child nodes (in the scene with outline) whose name is “Ear Pad”:

>>> for node in root.find(name = "Padding", types = lux.NODE_TYPE_GROUP):
        for ch in node.getChildren():
            if ch.getName() == "Ear Pad":
                ch.select()

If you have hidden some parts and want to simply show everything again:

>>> root.show()

It is also possible to change materials. To simulate ambient occlusion you could do the following:

>>> for node in root.find(""):
        node.setMaterial("Matte White")

Nodes can be moved to other groups, just like in the scene tree with drag-and-drop. In the following we find the group “Headphone #1” and move all nodes to it that are using a material with “Padding” in it.

>>> grp = root.find(name = "Headphone #1")[0] # Take first node of set.
>>> for node in root.find(mat = "Padding"):
        node.moveToGroup(grp)
True