[python] set layer visibility issue

[Alain (Alain Cormier)]

Here’s an explanation:

Set a sublayer to not visible in RhinoCommon

The persistent visibility setting is used for layers whose visibility can be changed by a “parent” layer. In this case, when a parent layer is turned off, then child layers are also turned off. The persistent visibility setting determines what happens when the parent is turned on again. Create some layers that have sublayers. Then turn off the parent layer. Notice how the parent layer’s lightbulb is gray but the sublayer’s lightbulb is half-gray. This indicates that the layer will be turned on …