You can control the transform of an individual instance of a multimesh through
MultiMeshInstance.MultiMesh.set_instance_transform ( int instance, Transform transform ).
You can control how many of the instances are visible through
MultiMeshInstance.Multimesh.visible_instance_count = < parameter >.
But how do you control which of the instances are visible and invisible?
I have cells that are born, and some eventually die. Since particular cells will die, it's not precise enough to tune down the
visible_instance_count (since I'm assuming that the highest indices will be cut off). So how can I make a
MultiMesh instance, representing a dead cell, invisible?