Solver UI - Output Attributes Non Unique Node Names Causes Duplicated Attributes

[david-cattermole]

Problem

The Solver UI will (incorrectly) display nodes with the same non-unique node names.

When 2 nodes with the same name are added to the Output Attributes, the Solver UI will collapse the nodes together.

Expected behavior:
When 2 nodes with the same name are added to the UI, both nodes should be visible and independent of each other.

Actual behavior:
The second node name is collapsed into the first node in the UI.
See the example images below.

Solver UI (the translate attributes are doubled up):

Outliner (shows the hierarchy with selected nodes added into the Solver UI):

Software Versions

• mmSolver version: v0.3.6+

• Maya version: Reported for Maya 2018, probably affects other versions too.

• Operating System (OS): Reported on Linux, but also happens on Windows.

[david-cattermole]

This bug is now fixed and will be released into v0.3.7.

The mmSolver.api.Attribute.get_node() function did not return the unique DAG node name because it used the MFnDependancyNode class, which does not understand DAG hierarchies and assumes all DG nodes have a unique name (by definition of being a DG node).