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Add FlashyFadeIn

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This commit is contained in:
Grant Sanderson 2021-08-19 09:00:30 -07:00
parent 573d630e5b
commit c08ea4e645
1 changed files with 22 additions and 0 deletions
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22
manimlib/animation/indication.py
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@ -9,6 +9,7 @@ from manimlib.animation.composition import Succession
from manimlib.animation.creation import ShowCreation
from manimlib.animation.creation import ShowPartial
from manimlib.animation.fading import FadeOut
from manimlib.animation.fading import FadeIn
from manimlib.animation.transform import Transform
from manimlib.mobject.types.vectorized_mobject import VMobject
from manimlib.mobject.geometry import Circle
@ -21,6 +22,8 @@ from manimlib.utils.bezier import interpolate
from manimlib.utils.config_ops import digest_config
from manimlib.utils.rate_functions import there_and_back
from manimlib.utils.rate_functions import wiggle
from manimlib.utils.rate_functions import smooth
from manimlib.utils.rate_functions import squish_rate_func
class FocusOn(Transform):
@ -361,3 +364,22 @@ class TurnInsideOut(Transform):
def create_target(self):
return self.mobject.copy().reverse_points()
class FlashyFadeIn(AnimationGroup):
CONFIG = {
"fade_lag": 0,
}
def __init__(self, vmobject, stroke_width=2, **kwargs):
digest_config(self, kwargs)
outline = vmobject.copy()
outline.set_fill(opacity=0)
outline.set_stroke(width=stroke_width, opacity=1)
rate_func = kwargs.get("rate_func", smooth)
super().__init__(
FadeIn(vmobject, rate_func=squish_rate_func(rate_func, self.fade_lag, 1)),
VShowPassingFlash(outline, time_width=1),
**kwargs
)