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62 lines
1.8 KiB
Python
62 lines
1.8 KiB
Python
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from __future__ import absolute_import
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import itertools as it
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import numpy as np
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from constants import *
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import warnings
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from animation.animation import Animation
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from animation.transform import Transform
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from utils.config_ops import digest_config
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class Rotating(Animation):
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CONFIG = {
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"axis" : OUT,
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"radians" : 2*np.pi,
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"run_time" : 5,
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"rate_func" : None,
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"in_place" : True,
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"about_point" : None,
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"about_edge" : None,
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}
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def update_submobject(self, submobject, starting_submobject, alpha):
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submobject.points = np.array(starting_submobject.points)
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def update_mobject(self, alpha):
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Animation.update_mobject(self, alpha)
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about_point = None
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if self.about_point is not None:
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about_point = self.about_point
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elif self.in_place: #This is superseeded
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self.about_point = self.mobject.get_center()
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self.mobject.rotate(
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alpha*self.radians,
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axis = self.axis,
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about_point = self.about_point,
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about_edge = self.about_edge,
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)
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class Rotate(Transform):
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CONFIG = {
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"in_place" : False,
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"about_point" : None,
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}
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def __init__(self, mobject, angle = np.pi, axis = OUT, **kwargs):
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if "path_arc" not in kwargs:
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kwargs["path_arc"] = angle
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if "path_arc_axis" not in kwargs:
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kwargs["path_arc_axis"] = axis
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digest_config(self, kwargs, locals())
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target = mobject.copy()
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if self.in_place:
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self.about_point = mobject.get_center()
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target.rotate(
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angle,
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axis = axis,
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about_point = self.about_point,
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)
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Transform.__init__(self, mobject, target, **kwargs)
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