A few supplemental animations for Galois artwork

_2022/galois/art_supplements.py

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+from manim_imports_ext import *
+
+
+class AmbientPermutations(Scene):
+    def construct(self):
+        # Test
+        text = Text("abcde", font_size=72)
+        text.arrange_to_fit_width(4.5)
+        self.add(text)
+
+        # Animate swaps
+        n_swaps = 10
+        perms = list(it.permutations(range(len(text))))
+
+        for x in range(n_swaps):
+            perm = random.choice(perms)
+            letter_anims = []
+            arrow_anims = []
+            for i, letter in enumerate(text):
+                target = text[perm[i]]
+                letter_anims.append(letter.animate.move_to(target, DOWN).set_anim_args(path_arc=90 * DEGREES))
+                if i < perm[i]:
+                    arrow = Arrow(letter.get_bottom(), target.get_bottom(), path_arc=90 * DEGREES)
+                elif i > perm[i]:
+                    arrow = Arrow(letter.get_top(), target.get_top(), path_arc=90 * DEGREES)
+                else:
+                    arrow = VMobject()
+                arrow.set_stroke(BLUE)
+                arrow_anims.append(ShowCreationThenFadeOut(arrow, run_time=2))
+
+            self.play(LaggedStart(*arrow_anims, *letter_anims, lag_ratio=0.05))
+            text.sort()
+
+
+class TimelineTransition(InteractiveScene):
+    def construct(self):
+        pass
+
+
+class OutpaintTransition(InteractiveScene):
+    image_path = "/Users/grant/3Blue1Brown Dropbox/3Blue1Brown/videos/2022/galois/artwork/chapter 1/wounded-by-pond/transition-to-hospital-2.png"
+
+    def construct(self):
+        image = ImageMobject(self.image_path)
+        image.set_height(FRAME_HEIGHT)
+        image.to_edge(LEFT, buff=0)
+        self.add(image)
+
+        # Pan
+        self.play(
+            image.animate.to_edge(RIGHT, buff=-1),
+            run_time=8,
+            rate_func=bezier([0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1])
+        )
+        image.to_edge(RIGHT, buff=-1)
+
+
+class NightSkyOutpaintingTransition(InteractiveScene):
+    image_path = "/Users/grant/3Blue1Brown Dropbox/3Blue1Brown/videos/2022/galois/artwork/chapter 1/transition-to-night-sky/mural.png"
+
+    def construct(self):
+        # Add image
+        image = ImageMobject(self.image_path)
+        image.set_width(FRAME_WIDTH + 6)
+        image.to_edge(DL, buff=0)
+        image.shift(2 * DOWN + LEFT)
+        self.add(image)
+
+        # Pan
+        image.generate_target()
+        image.target.set_width(FRAME_WIDTH)
+        image.target.center().to_edge(UP, buff=0)
+
+        self.play(
+            MoveToTarget(image),
+            run_time=12,
+            rate_func=bezier([0, 0, 0, 1, 1, 1])
+        )
+        self.wait()
+
+
+class LastWordsQuote(InteractiveScene):
+    def construct(self):
+        # French quote
+        fr_quote = Text(
+            """
+            Ne pleure pas, Alfred! J'ai besoin de
+            tout mon courage pour mourir à vingt ans!
+            """,
+            alignment="LEFT",
+            font="Better Grade",
+            font_size=72
+        )
+        fr_quote.to_corner(UR)
+        self.add(fr_quote)
+
+        # Write english quote
+        en_quote = Text(
+            """
+            Do not cry, Alfred! I
+            need all my courage to die
+            at twenty years of age!
+            """,
+            alignment="LEFT",
+        )
+        en_quote.match_width(fr_quote)
+        en_quote.next_to(fr_quote, DOWN, buff=1)
+        self.play(FadeIn(en_quote, lag_ratio=0.1, run_time=6))
+        self.wait()
+
+
+class InfamousCoquette(InteractiveScene):
+    def construct(self):
+        # Write quote
+        quote = TexText(
+            "``I die the victim of an infamous coquette and her two dupes.''",
+        )
+        quote.to_edge(UP)
+        quote.set_width(FRAME_WIDTH - 1)
+        quote.set_stroke(BLACK, 0)
+        quote.set_fill(BLACK)
+        self.play(Write(quote, run_time=3))
+        self.wait()