Get rid of NormalAnimationAsContinualAnimation

manimlib/continual_animation/continual_animation.py

@@ -1,7 +1,6 @@
 import copy
 
 from manimlib.constants import *
-from manimlib.mobject.mobject import Group
 from manimlib.mobject.mobject import Mobject
 from manimlib.utils.config_ops import digest_config
 
@@ -52,19 +51,3 @@ class ContinualAnimation(object):
 
     def copy(self):
         return copy.deepcopy(self)
-
-
-class ContinualAnimationGroup(ContinualAnimation):
-    CONFIG = {
-        "start_up_time": 0,
-        "wind_down_time": 0,
-    }
-
-    def __init__(self, *continual_animations, **kwargs):
-        digest_config(self, kwargs, locals())
-        self.group = Group(*[ca.mobject for ca in continual_animations])
-        ContinualAnimation.__init__(self, self.group, **kwargs)
-
-    def update_mobject(self, dt):
-        for continual_animation in self.continual_animations:
-            continual_animation.update(dt)

manimlib/continual_animation/from_animation.py

@@ -1,22 +1,6 @@
 from manimlib.continual_animation.continual_animation import ContinualAnimation
 
 
-class NormalAnimationAsContinualAnimation(ContinualAnimation):
-    CONFIG = {
-        "start_up_time": 0,
-        "wind_down_time": 0,
-    }
-
-    def __init__(self, animation, **kwargs):
-        self.animation = animation
-        ContinualAnimation.__init__(self, animation.mobject, **kwargs)
-
-    def update_mobject(self, dt):
-        self.animation.update(
-            min(float(self.internal_time) / self.animation.run_time, 1)
-        )
-
-
 class CycleAnimation(ContinualAnimation):
     def __init__(self, animation, **kwargs):
         self.animation = animation

manimlib/mobject/mobject_update_utils.py

@@ -1,4 +1,6 @@
 import inspect
+import numpy as np
+
 from manimlib.constants import DEGREES
 from manimlib.constants import RIGHT
 from manimlib.mobject.mobject import Mobject
@@ -30,3 +32,31 @@ def always_rotate(mobject, rate=20 * DEGREES, **kwargs):
         lambda m, dt: m.rotate(dt * rate, **kwargs)
     )
     return mobject
+
+
+def turn_animation_into_updater(animation):
+    """
+    Note sure if this is actually useful.  This is really
+    here just to replace past usage of
+    turn_animation_into_updater
+    """
+    mobject = animation.mobject
+    animation.suspend_mobject_updating = False
+    animation.begin()
+    animation.total_time = 0
+
+    def update(m, dt):
+        alpha = np.clip(
+            animation.total_time / animation.get_run_time(),
+            0, 1,
+        )
+        if alpha >= 1:
+            animation.finish()
+            m.remove_updater(update)
+        else:
+            animation.interpolate(alpha)
+            animation.total_time += dt
+            animation.update_mobjects(dt)
+
+    mobject.add_updater(update)
+    return mobject

old_projects/alt_calc.py

@@ -781,9 +781,9 @@ class StartingCalc101(PiCreatureScene):
         group.next_to(self.title, DOWN, MED_LARGE_BUFF)
         group.rects = rects
         group.continual_animations = [
-            NormalAnimationAsContinualAnimation(Write(rects)),
-            NormalAnimationAsContinualAnimation(ShowCreation(graph)),
-            NormalAnimationAsContinualAnimation(FadeIn(gs.axes)),
+            turn_animation_into_updater(Write(rects)),
+            turn_animation_into_updater(ShowCreation(graph)),
+            turn_animation_into_updater(FadeIn(gs.axes)),
         ]
         self.adjust_size(group)
         return group

old_projects/fc1.py

@@ -15,7 +15,7 @@ class CrossingOneMillion(TeacherStudentsScene):
         self.look_at(number, run_time=0)
 
         confetti_spirils = self.confetti_spirils = list(map(
-            NormalAnimationAsContinualAnimation,
+            turn_animation_into_updater,
             get_confetti_animations(50)
         ))
         self.add(*confetti_spirils)

old_projects/lost_lecture.py

@@ -1770,7 +1770,7 @@ class ProveEllipse(ShowEmergingEllipse, ShowEllipseDefiningProperty):
         # Dot defining Q point
         Q_dot = Dot(color=GREEN)
         Q_dot.move_to(self.focal_sum_point)
-        focal_sum_point_animation = NormalAnimationAsContinualAnimation(
+        focal_sum_point_animation = turn_animation_into_updater(
             MaintainPositionRelativeTo(
                 self.focal_sum_point, Q_dot
             )
@@ -1784,7 +1784,7 @@ class ProveEllipse(ShowEmergingEllipse, ShowEllipseDefiningProperty):
         Q_label.match_color(Q_dot)
         Q_label.add_to_back(Q_label.copy().set_stroke(BLACK, 5))
         Q_label.next_to(Q_dot, UL, buff=0)
-        Q_label_animation = NormalAnimationAsContinualAnimation(
+        Q_label_animation = turn_animation_into_updater(
             MaintainPositionRelativeTo(Q_label, Q_dot)
         )
 

old_projects/mug.py

@@ -70,7 +70,7 @@ class HappyHolidays(TeacherStudentsScene):
             run_time = 10,
             rate_func = lambda x : x,
         )
-        return NormalAnimationAsContinualAnimation(snowflake_spirils)
+        return turn_animation_into_updater(snowflake_spirils)
 
 class UtilitiesPuzzleScene(Scene):
     CONFIG = {

old_projects/quaternions.py

@@ -1288,7 +1288,7 @@ class IntroduceLinusTheLinelander(Scene):
             rate_func=there_and_back,
             lag_ratio=0.1
         )
-        q_marks_continual = NormalAnimationAsContinualAnimation(q_marks_anim)
+        q_marks_continual = turn_animation_into_updater(q_marks_anim)
 
         self.play(
             FadeOut(to_fade),

old_projects/uncertainty.py

@@ -1750,7 +1750,7 @@ class IntroduceDopplerRadar(Scene):
             dish, randy, 
             speed = 0.97*speed, #Just needs slightly better alignment
         )
-        graph_draw = NormalAnimationAsContinualAnimation(
+        graph_draw = turn_animation_into_updater(
             ShowCreation(
                 sum_graph, 
                 rate_func=linear, 
@@ -1824,7 +1824,7 @@ class IntroduceDopplerRadar(Scene):
         echo_subtext.next_to(echo_text, RIGHT)
         echo_subtext.match_color(echo_graph)
 
-        graph_draw = NormalAnimationAsContinualAnimation(
+        graph_draw = turn_animation_into_updater(
             ShowCreation(sum_graph, run_time = 8, rate_func=linear)
         )
         pulse = RadarPulse(dish, plane, n_pulse_singletons = 12)

old_projects/waves.py

@@ -4,6 +4,16 @@ from big_ol_pile_of_manim_imports import *
 E_COLOR = BLUE
 M_COLOR = YELLOW
 
+
+# Warning, much of what is below was implemented using
+# ConintualAnimation, which has now been deprecated.  One
+# Should use Mobject updaters instead.
+# 
+# That is, anything below implemented as a ContinualAnimation
+# should instead be a Mobject, where the update methods
+# should be added via Mobject.add_udpater.
+
+
 class OscillatingVector(ContinualAnimation):
     CONFIG = {
         "tail" : ORIGIN,