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37 lines
1.4 KiB
Python
37 lines
1.4 KiB
Python
from manimlib.utils.iterables import remove_list_redundancies
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import itertools as it
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def extract_mobject_family_members(mobject_list, only_those_with_points=False):
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result = remove_list_redundancies(list(
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it.chain(*[m.get_family() for m in mobject_list])
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))
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if only_those_with_points:
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result = [m for m in result if m.has_points()]
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return result
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def restructure_list_to_exclude_certain_family_members(mobject_list, to_remove):
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"""
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Removes anything in to_remove from mobject_list, but in the event that one of
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the items to be removed is a member of the family of an item in mobject_list,
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the other family members are added back into the list.
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This is useful in cases where a scene contains a group, e.g. Group(m1, m2, m3),
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but one of its submobjects is removed, e.g. scene.remove(m1), it's useful
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for the list of mobject_list to be edited to contain other submobjects, but not m1.
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"""
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new_list = []
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def add_safe_mobjects_from_list(list_to_examine, set_to_remove):
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for mob in list_to_examine:
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if mob in set_to_remove:
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continue
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intersect = set_to_remove.intersection(mob.get_family())
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if intersect:
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add_safe_mobjects_from_list(mob.submobjects, intersect)
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else:
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new_list.append(mob)
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add_safe_mobjects_from_list(mobject_list, set(to_remove))
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return new_list
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