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54 lines
1.4 KiB
Python
54 lines
1.4 KiB
Python
from manimlib.mobject.types.vectorized_mobject import VectorizedPoint
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from manimlib.animation.transform import Transform
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# from manimlib.utils.paths import counterclockwise_path
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from manimlib.constants import PI
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class GrowFromPoint(Transform):
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CONFIG = {
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"point_color": None,
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}
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def __init__(self, mobject, point, **kwargs):
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self.point = point
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super().__init__(mobject, **kwargs)
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def create_target(self):
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return self.mobject
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def create_starting_mobject(self):
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start = super().create_starting_mobject()
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start.scale(0)
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start.move_to(self.point)
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if self.point_color:
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start.set_color(self.point_color)
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return start
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class GrowFromCenter(GrowFromPoint):
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def __init__(self, mobject, **kwargs):
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point = mobject.get_center()
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super().__init__(mobject, point, **kwargs)
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class GrowFromEdge(GrowFromPoint):
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def __init__(self, mobject, edge, **kwargs):
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point = mobject.get_critical_point(edge)
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super().__init__(mobject, point, **kwargs)
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class GrowArrow(GrowFromPoint):
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def __init__(self, arrow, **kwargs):
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point = arrow.get_start()
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super().__init__(arrow, point, **kwargs)
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class SpinInFromNothing(GrowFromCenter):
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CONFIG = {
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"path_arc": PI,
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}
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class ShrinkToCenter(Transform):
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def create_target(self):
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return VectorizedPoint(self.mobject.get_center())
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