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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 ShowCreation
from manimlib.animation.creation import ShowPartial from manimlib.animation.creation import ShowPartial
from manimlib.animation.fading import FadeOut from manimlib.animation.fading import FadeOut
from manimlib.animation.fading import FadeIn
from manimlib.animation.transform import Transform from manimlib.animation.transform import Transform
from manimlib.mobject.types.vectorized_mobject import VMobject from manimlib.mobject.types.vectorized_mobject import VMobject
from manimlib.mobject.geometry import Circle 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.config_ops import digest_config
from manimlib.utils.rate_functions import there_and_back from manimlib.utils.rate_functions import there_and_back
from manimlib.utils.rate_functions import wiggle 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): class FocusOn(Transform):
@ -361,3 +364,22 @@ class TurnInsideOut(Transform):
def create_target(self): def create_target(self):
return self.mobject.copy().reverse_points() 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
)