This is a series of MPxLocatorNode built in OpenGL and integrated on PyQT interface.
when you create the first locator by default, if you don't fill the "locator name" on line edit, the name is "locator_01". Most important, if you change the name please use underscore and a trunk of alphanumeric characters, i.e. "CTRL_spine_001_C". I created a method to check the string and to set one more unit if the object exists.
Four nodes are registered on plugin: clCircle,dfBox,dfCilinder,clSphere.