How to always display MPxNodes

Question

In Maya API, MPxLocatorNodes allow to draw OpenGL on the viewport.
However, when the locator position is not on the screen, then its draw function will not be called. How to have the draw function been called all the time, even when the locator is not on the screen ?

Answer 1

It is possible by either returning False in the isBounded function, or by extending the bounding box size in the boundingBox() function.