mirror of
https://github.com/ManimCommunity/manim.git
synced 2026-06-22 10:01:47 +00:00
dcb90a8656* Format imports using Isort. Add a check for pull requests. Signed-off-by: Naveen M K <naveen@syrusdark.website> * CI: update check's name
99 lines
4 KiB
Python
99 lines
4 KiB
Python
from manim.animation.animation import Animation, Wait
|
|
from manim.animation.composition import AnimationGroup, Succession
|
|
from manim.animation.fading import FadeIn, FadeInFrom, FadeOutAndShift
|
|
from manim.constants import DOWN
|
|
from manim.mobject.geometry import Circle, Line, Square
|
|
|
|
|
|
def test_succession_timing():
|
|
"""Test timing of animations in a succession."""
|
|
line = Line()
|
|
animation_1s = FadeInFrom(line, direction=DOWN, run_time=1.0)
|
|
animation_4s = FadeOutAndShift(line, direction=DOWN, run_time=4.0)
|
|
succession = Succession(animation_1s, animation_4s)
|
|
assert succession.get_run_time() == 5.0
|
|
succession.begin()
|
|
assert succession.active_index == 0
|
|
# The first animation takes 20% of the total run time.
|
|
succession.interpolate(0.199)
|
|
assert succession.active_index == 0
|
|
succession.interpolate(0.2)
|
|
assert succession.active_index == 1
|
|
succession.interpolate(0.8)
|
|
assert succession.active_index == 1
|
|
# At 100% and more, no animation must be active anymore.
|
|
succession.interpolate(1.0)
|
|
assert succession.active_index == 2
|
|
assert succession.active_animation is None
|
|
succession.interpolate(1.2)
|
|
assert succession.active_index == 2
|
|
assert succession.active_animation is None
|
|
|
|
|
|
def test_succession_in_succession_timing():
|
|
"""Test timing of nested successions."""
|
|
line = Line()
|
|
animation_1s = FadeInFrom(line, direction=DOWN, run_time=1.0)
|
|
animation_4s = FadeOutAndShift(line, direction=DOWN, run_time=4.0)
|
|
nested_succession = Succession(animation_1s, animation_4s)
|
|
succession = Succession(
|
|
FadeInFrom(line, direction=DOWN, run_time=4.0),
|
|
nested_succession,
|
|
FadeInFrom(line, direction=DOWN, run_time=1.0),
|
|
)
|
|
assert nested_succession.get_run_time() == 5.0
|
|
assert succession.get_run_time() == 10.0
|
|
succession.begin()
|
|
succession.interpolate(0.1)
|
|
assert succession.active_index == 0
|
|
# The nested succession must not be active yet, and as a result hasn't set active_animation yet.
|
|
assert not hasattr(nested_succession, "active_animation")
|
|
succession.interpolate(0.39)
|
|
assert succession.active_index == 0
|
|
assert not hasattr(nested_succession, "active_animation")
|
|
# The nested succession starts at 40% of total run time
|
|
succession.interpolate(0.4)
|
|
assert succession.active_index == 1
|
|
assert nested_succession.active_index == 0
|
|
# The nested succession second animation starts at 50% of total run time.
|
|
succession.interpolate(0.49)
|
|
assert succession.active_index == 1
|
|
assert nested_succession.active_index == 0
|
|
succession.interpolate(0.5)
|
|
assert succession.active_index == 1
|
|
assert nested_succession.active_index == 1
|
|
# The last animation starts at 90% of total run time. The nested succession must be finished at that time.
|
|
succession.interpolate(0.89)
|
|
assert succession.active_index == 1
|
|
assert nested_succession.active_index == 1
|
|
succession.interpolate(0.9)
|
|
assert succession.active_index == 2
|
|
assert nested_succession.active_index == 2
|
|
assert nested_succession.active_animation is None
|
|
# After 100%, nothing must be playing anymore.
|
|
succession.interpolate(1.0)
|
|
assert succession.active_index == 3
|
|
assert succession.active_animation is None
|
|
assert nested_succession.active_index == 2
|
|
assert nested_succession.active_animation is None
|
|
|
|
|
|
def test_animationbuilder_in_group():
|
|
sqr = Square()
|
|
circ = Circle()
|
|
animation_group = AnimationGroup(sqr.animate.shift(DOWN).scale(2), FadeIn(circ))
|
|
assert all(isinstance(anim, Animation) for anim in animation_group.animations)
|
|
succession = Succession(sqr.animate.shift(DOWN).scale(2), FadeIn(circ))
|
|
assert all(isinstance(anim, Animation) for anim in succession.animations)
|
|
|
|
|
|
def test_animationgroup_with_wait():
|
|
sqr = Square()
|
|
sqr_anim = FadeIn(sqr)
|
|
wait = Wait()
|
|
animation_group = AnimationGroup(wait, sqr_anim, lag_ratio=1)
|
|
|
|
animation_group.begin()
|
|
timings = animation_group.anims_with_timings
|
|
|
|
assert timings == [(wait, 0.0, 1.0), (sqr_anim, 1.0, 2.0)]
|