Edits for eop1 finalization

active_projects/eop/chapter1/million_flips.py

@@ -0,0 +1,118 @@
+from big_ol_pile_of_manim_imports import *
+from active_projects.eop.reusable_imports import *
+
+
+class MillionFlips(Scene):
+    def construct(self):
+        title = TextMobject("1{,}000{,}000 flips")
+        title.to_edge(UP)
+        self.add(title)
+
+        small_wait_time = 1.0 / 15  # Um...
+
+        n_flips_label = TextMobject("\\# Flips: ")
+        n_heads_label = TextMobject("\\# Heads: ")
+        n_flips_count = Integer(0)
+        n_heads_count = Integer(0)
+        n_heads_label.to_edge(RIGHT, buff=2 * LARGE_BUFF)
+        n_flips_label.next_to(n_heads_label, DOWN, aligned_edge=LEFT)
+        n_flips_count.next_to(n_flips_label[-1], RIGHT)
+        n_heads_count.next_to(n_heads_label[-1], RIGHT)
+        VGroup(n_flips_count, n_heads_count).shift(0.5 * SMALL_BUFF * UP)
+        self.add(n_flips_label, n_heads_label, n_flips_count, n_heads_count)
+
+        coins = VGroup(*[
+            FlatHeads() if random.random() < 0.5 else FlatTails()
+            for x in range(100)
+        ])
+        self.organize_group(coins)
+
+        proportions = np.random.normal(0.5, 0.5 * 0.1, 100)
+        hundred_boxes = VGroup(*[
+            Square(
+                stroke_width=1,
+                stroke_color=WHITE,
+                fill_opacity=1,
+                fill_color=interpolate_color(COLOR_HEADS, COLOR_TAILS, prop)
+            )
+            for prop in proportions
+        ])
+        self.organize_group(hundred_boxes)
+
+        ten_k_proportions = np.random.normal(0.5, 0.5 * 0.01, 100)
+        ten_k_boxes = VGroup(*[
+            Square(
+                stroke_width=1,
+                stroke_color=WHITE,
+                fill_opacity=1,
+                fill_color=interpolate_color(COLOR_HEADS, COLOR_TAILS, prop)
+            )
+            for prop in ten_k_proportions
+        ])
+        self.organize_group(ten_k_boxes)
+
+        # Animations
+        for coin in coins:
+            self.add(coin)
+            self.increment(n_flips_count)
+            if isinstance(coin, FlatHeads):
+                self.increment(n_heads_count)
+            self.wait(small_wait_time)
+
+        self.play(
+            FadeIn(hundred_boxes[0]),
+            coins.set_stroke, {"width": 0},
+            coins.replace, hundred_boxes[0]
+        )
+        hundred_boxes[0].add(coins)
+        for box, prop in zip(hundred_boxes, proportions)[1:]:
+            self.add(box)
+            self.increment(n_flips_count, 100)
+            self.increment(n_heads_count, int(np.round(prop * 100)))
+            self.wait(small_wait_time)
+
+        self.play(
+            FadeIn(ten_k_boxes[0]),
+            hundred_boxes.set_stroke, {"width": 0},
+            hundred_boxes.replace, ten_k_boxes[0]
+        )
+        ten_k_boxes[0].add(hundred_boxes)
+        for box, prop in zip(ten_k_boxes, ten_k_proportions)[1:]:
+            self.add(box)
+            self.increment(n_flips_count, 10000)
+            self.increment(n_heads_count, int(np.round(prop * 10000)))
+            self.wait(small_wait_time)
+        self.wait()
+
+    def organize_group(self, group):
+        group.arrange_submobjects_in_grid(10)
+        group.scale_to_fit_height(5)
+        group.shift(DOWN + 2 * LEFT)
+
+    def increment(self, integer_mob, value=1):
+        new_int = Integer(integer_mob.number + value)
+        new_int.move_to(integer_mob, DL)
+        integer_mob.number += value
+        integer_mob.submobjects = new_int.submobjects
+
+
+class PropHeadsWithinThousandth(Scene):
+    def construct(self):
+        prob = TexMobject(
+            "P(499{,}000 \\le", "\\# \\text{H}", "\\le 501{,}000)",
+            "\\approx", "0.9545",
+        )
+        prob[1].set_color(RED)
+        prob[-1].set_color(YELLOW)
+        self.add(prob)
+
+
+class PropHeadsWithinHundredth(Scene):
+    def construct(self):
+        prob = TexMobject(
+            "P(490{,}000 \\le", "\\# \\text{H}", "\\le 510{,}000)",
+            "\\approx", "0.99999999\\dots",
+        )
+        prob[1].set_color(RED)
+        prob[-1].set_color(YELLOW)
+        self.add(prob)

active_projects/eop/chapter1/prob_dist_visuals.py

@@ -164,28 +164,28 @@ class ProbabilityDistributions(PiCreatureScene):
         cell_size = 0.5
         dice_table = TwoDiceTable(cell_size = cell_size, label_scale = 0.7)
         dice_table.shift(0.8 * DOWN)
-        dice_unit_rect = SurroundingRectangle(dice_table.cells, buff = 0,
-            stroke_color = WHITE) 
+        dice_unit_rect = SurroundingRectangle(
+            dice_table.cells, buff = 0,
+            stroke_color=WHITE
+        )
 
         dice_table_grouped_cells = VGroup()
 
         for i in range(6):
-            cell = dice_table.cells[6 * i]
-            start = cell.get_center()
-            stop = start + cell_size * LEFT + cell_size * DOWN
-            
             dice_table_grouped_cells.add(VGroup(*[
-                dice_table.cells[6 * i - 5 * k]
+                VGroup(
+                    dice_table.cells[6 * i - 5 * k],
+                    dice_table.labels[6 * i - 5 * k],
+                )
                 for k in range(i + 1)
             ]))
 
         for i in range(5):
-            cell = dice_table.cells[31 + i]
-            start = cell.get_center()
-            stop = start + cell_size * LEFT + cell_size * DOWN
-            
             dice_table_grouped_cells.add(VGroup(*[
-                dice_table.cells[31 + i - 5 * k]
+                VGroup(
+                    dice_table.cells[31 + i - 5 * k],
+                    dice_table.labels[31 + i - 5 * k],
+                )
                 for k in range(5 - i)
             ]))
 
@@ -194,8 +194,8 @@ class ProbabilityDistributions(PiCreatureScene):
         #     FadeIn(dice_table.rows)
         # )
 
-        for (cell, label) in zip(dice_table.cells, dice_table.labels):
-            cell.add(label)
+        # for (cell, label) in zip(dice_table.cells, dice_table.labels):
+        #     cell.add(label)
 
         # self.play(
         #     LaggedStart(FadeIn, dice_table_grouped_cells,
@@ -211,14 +211,16 @@ class ProbabilityDistributions(PiCreatureScene):
 
 
         self.play(
-            dice_table_grouped_cells.space_out_submobjects, {"factor" : 1.9},
+            dice_table_grouped_cells.space_out_submobjects, {"factor" : 1.5},
             rate_func=there_and_back_with_pause,
             run_time=run_time
         )
+
         dice_table.add(dice_unit_rect)
-        dice_table_target = dice_table.copy()
-        dice_table_target.scale(0.5).to_corner(UR, buff = LARGE_BUFF)
-        dice_table_target.shift(0.4*UP)
+        dice_table_target = dice_table.deepcopy()
+        dice_table_target.scale(0.5)
+        dice_table_target.to_corner(UR, buff=LARGE_BUFF)
+        dice_table_target.shift(0.4 * UP)
 
         self.play(Transform(dice_table, dice_table_target))
 
@@ -231,9 +233,10 @@ class ProbabilityDistributions(PiCreatureScene):
 
 # TITLE
 
-        text = TextMobject("Probability distributions", color = YELLOW)
+        text = TextMobject("Probability distributions")
         text.to_edge(UP)
-        text_rect = SurroundingRectangle(text, buff = MED_SMALL_BUFF)
+        text_rect = SurroundingRectangle(text, buff=MED_SMALL_BUFF)
+        text_rect.match_color(text)
 
         self.play(
             FadeIn(text),
@@ -263,7 +266,7 @@ class ProbabilityDistributions(PiCreatureScene):
         braces = VGroup()
         labels = VGroup()
         for (rect, count) in zip(brick_row.rects, counts):
-            label = TexMobject("{" + str(count) + "\over 8}").scale(0.5)
+            label = TexMobject("{" + str(count) + "\\over 8}").scale(0.5)
             brace = Brace(rect, DOWN)
             label.next_to(brace, DOWN)
             braces.add(brace)
@@ -286,7 +289,7 @@ class ProbabilityDistributions(PiCreatureScene):
         outcome_braces = VGroup(*[
             Brace(outcome, DOWN) for outcome in outcomes
         ])
-        outcome_labels = VGroup(*[
+        outcome_labels = VGroup(*[i
             TexMobject("{1\over 8}").scale(0.5).next_to(brace, DOWN)
             for brace in outcome_braces
         ])

active_projects/eop/chapter1/quiz_result.py

@@ -71,12 +71,14 @@ class QuizResult(PiCreatureScene):
             all_quizzes.add(quiz_copy)
 
         master_quiz = get_example_quiz()
-        self.play(ShowCreation(master_quiz), run_time = 2)
+        self.play(Write(master_quiz), run_time = 2)
         self.wait()
-        self.play(Transform(master_quiz, all_quizzes[0]))
-        self.wait()
-        
-        self.play(LaggedStart(FadeIn,all_quizzes))
+        self.play(ReplacementTransform(
+            VGroup(master_quiz), all_quizzes,
+            run_time=2,
+            submobject_mode="lagged_start"
+        ))
+        self.wait(2)
 
         grades_mob = VGroup()
         for (pi, quiz, grade) in zip(all_students, all_quizzes, grades):

active_projects/eop/chapter1/what_does_probability_mean.py

@@ -1,8 +1,7 @@
-
 from big_ol_pile_of_manim_imports import *
 
-class WhatDoesItReallyMean(TeacherStudentsScene):
 
+class WhatDoesItReallyMean(TeacherStudentsScene):
     CONFIG = {
         "default_pi_creature_kwargs": {
             "color": MAROON_E,
@@ -11,36 +10,34 @@ class WhatDoesItReallyMean(TeacherStudentsScene):
     }
 
     def construct(self):
-
-        student_q = TextMobject("What does", "``probability''", "\emph{actually}", "mean?")
+        student_q = TextMobject(
+            "What does", "``probability''\\\\",
+            "\\emph{actually}", "mean?"
+        )
         student_q.set_color_by_tex("probability", YELLOW)
-        self.student_says(student_q, target_mode = "sassy")
+        self.student_says(student_q, target_mode="sassy")
         self.wait()
         self.play(
-            self.students[1].change_mode, "plain"
+            self.students[1].change_mode, "confused"
         )
-        self.wait()
-        self.play(RemovePiCreatureBubble(self.students[1]))
-        
-        self.wait()
-
-        self.teacher_says("Don't worry -- philosophy can come later!")
-        self.wait()
-
-
-
-class EmptyTSScene(TeacherStudentsScene):
-    CONFIG = {
-        "default_pi_creature_kwargs": {
-            "color": MAROON_E,
-            "flip_at_start": True,
-        },
-    }
-
-    def construct(self):
-
-        self.wait()
+        self.wait(2)
+        student_bubble = self.students[1].bubble
+        self.students[1].bubble = None
+        student_bubble.add(student_bubble.content)
+        self.play(
+            student_bubble.scale, 0.5,
+            student_bubble.to_corner, UL,
+        )
+        self.teacher_says(
+            "Don't worry -- philosophy\\\\ can come later!",
+            added_anims=[self.get_student_changes(*3 * ["happy"])],
+        )
+        self.wait(2)
+        self.play(RemovePiCreatureBubble(self.teacher))
         self.play(*[
-            ApplyMethod(pi.look_at,ORIGIN) for pi in self.get_pi_creatures()
+            ApplyMethod(pi.look_at, ORIGIN) for pi in self.get_pi_creatures()
         ])
-        self.wait(8)
+        self.change_all_student_modes("pondering", look_at_arg=UP)
+        self.wait(3)
+        self.change_student_modes("confused", look_at_arg=UP)
+        self.wait(3)