The hou.NetworkEditor pane allows network items to be moved or resized by user interactions without actually changing the node positions or sizes. This is accomplished by associating each NetworkAnimValue with a network item through the hou.NetworkEditor.setAdjustments method. NetworkAnimValues can either represent a single value, or they can represent an animation from one value to another. The actual animation is displayed automatically by the network editor.

For example, to following code would animate the position of a couple of nodes:

>>> editor = hou.ui.paneTabOfType(hou.paneTabType.NetworkEditor)
>>> n1 = hou.node('/obj/geo1')
>>> pos1 = n1.position()
>>> newpos1 = pos1 + hou.Vector2(5, 5)
>>> anim1 = hou.NetworkAnimValue(1.0, pos1, newpos1)
>>> n2 = hou.node('/obj/geo2')
>>> pos2 = n2.position()
>>> newpos2 = pos2 + hou.Vector2(5, 5)
>>> anim2 = hou.NetworkAnimValue(1.0, pos2, newpos2)
>>> editor.setAdjustments([n1, n2], [anim1, anim2], auto_remove=True)
>>> n1.setPosition(newpos1)
>>> n2.setPosition(newpos2)

Note that the new positions are set on the nodes immediately. But the animation starts them at their original positions, and makes it look like they move slowly to their new positions. Also note that the auto_remove parameter in the call to setAdjustments() has been set to True. This is because we are using the adjustments only to animate the nodes to their new positions, which have already been set. Once the animation is complete, the adjustments can be thrown away. Without this parameter, the adjustments would remain on the network editor until the next call the setAdjustments.