def display(self, label: Label, show: bool = True):
"""Display or hide a label.
+label+ Label to be hidden or displayed.
+show+ True to display, False to hide.
"""
if show:
label.batch = self.batch
else:
label.batch = None
def add_text(self, text: Label):
super(Viewport, self).add_text(text)
text.batch = self._batch
self._vertex_lists |= set(text._vertex_lists)