created chapter 0

active_projects/eop/chapter0.py

@@ -0,0 +1,82 @@
+from big_ol_pile_of_manim_imports import *
+
+class Introduction(TeacherStudentsScene):
+
+    CONFIG = {
+        "default_pi_creature_kwargs": {
+        "color": MAROON_E,
+        "flip_at_start": True,
+        },
+    }
+
+    def construct(self):
+        self.show_series()
+        self.show_examples()
+
+    def show_series(self):
+        series = VideoSeries(num_videos = 11)
+        series.to_edge(UP)
+        this_video = series[0]
+        this_video.set_color(YELLOW)
+        this_video.save_state()
+        this_video.set_fill(opacity = 0)
+        this_video.center()
+        this_video.scale_to_fit_height(FRAME_HEIGHT)
+        self.this_video = this_video
+
+
+        words = TextMobject(
+            "Welcome to \\\\",
+            "Essence of Probability"
+        )
+        words.set_color_by_tex("Essence of Probability", YELLOW)
+
+        self.teacher.change_mode("happy")
+        self.play(
+            FadeIn(
+                series,
+                submobject_mode = "lagged_start",
+                run_time = 2
+            ),
+            Blink(self.get_teacher())
+        )
+        self.teacher_says(words, target_mode = "hooray")
+        self.change_student_modes(
+            *["hooray"]*3,
+            look_at_arg = series[1].get_left(),
+            added_anims = [
+                ApplyMethod(this_video.restore, run_time = 3),
+            ]
+        )
+        self.play(*[
+            ApplyMethod(
+                video.shift, 0.5*video.get_height()*DOWN,
+                run_time = 3,
+                rate_func = squish_rate_func(
+                    there_and_back, alpha, alpha+0.3
+                )
+            )
+            for video, alpha in zip(series, np.linspace(0, 0.7, len(series)))
+        ]+[
+            Animation(self.teacher.bubble),
+            Animation(self.teacher.bubble.content),
+        ])
+
+        self.play(
+            FadeOut(self.teacher.bubble),
+            FadeOut(self.teacher.bubble.content),
+            self.get_teacher().change_mode, "raise_right_hand",
+            *[
+                ApplyMethod(pi.change_mode, "pondering")
+                for pi in self.get_students()
+            ]
+        )
+        self.wait()
+
+        self.series = series
+
+
+    def show_examples(self):
+
+        self.wait(10)
+        # put examples here in video editor