From cd14dea021c3b7fd45c80f44c9916028e44944d8 Mon Sep 17 00:00:00 2001
From: Grant Sanderson <grant@3blue1brown.com>
Date: Wed, 15 Jan 2020 18:00:43 -0800
Subject: [PATCH] Beginning beta project

---
 from_3b1b/active/bayes/beta.py | 83 ++++++++++++++++++++++++++++++++++
 1 file changed, 83 insertions(+)
 create mode 100644 from_3b1b/active/bayes/beta.py

diff --git a/from_3b1b/active/bayes/beta.py b/from_3b1b/active/bayes/beta.py
new file mode 100644
index 00000000..143ca5b7
--- /dev/null
+++ b/from_3b1b/active/bayes/beta.py
@@ -0,0 +1,83 @@
+from manimlib.imports import *
+
+OUTPUT_DIRECTORY = "bayes/beta"
+
+
+class BarChart(Axes):
+    CONFIG = {
+        "x_min": 0,
+        "x_max": 10,
+        "y_min": 0,
+        "y_max": 1,
+        "axis_config": {
+            "include_tip": False,
+        },
+        "y_axis_config": {
+            "tick_frequency": 0.2,
+        },
+        "height": 5,
+        "width": 10,
+        "y_axis_numbers_to_show": range(20, 120, 20),
+        "y_axis_label_height": 0.25,
+        "include_h_lines": True,
+        "h_line_style": {
+            "stroke_width": 1,
+            "stroke_color": LIGHT_GREY,
+        }
+    }
+
+    def __init__(self, **kwargs):
+        super().__init__(**kwargs)
+        self.resize()
+        self.center()
+        self.add_y_axis_labels()
+        if self.include_h_lines:
+            self.add_h_lines()
+        self.add_bars()
+
+    # Initializing methods
+    def resize(self):
+        self.x_axis.set_width(
+            self.width,
+            stretch=True,
+            about_point=self.c2p(0, 0),
+        )
+        self.y_axis.set_height(
+            self.height,
+            stretch=True,
+            about_point=self.c2p(0, 0),
+        )
+
+    def add_y_axis_labels(self):
+        labels = VGroup()
+        for value in self.y_axis_numbers_to_show:
+            label = Integer(value, unit="\\%")
+            label.set_height(self.y_axis_label_height)
+            label.next_to(self.y_axis.n2p(0.01 * value), LEFT)
+            labels.add(label)
+        self.y_axis_labels = labels
+        self.y_axis.add(labels)
+        return self
+
+    def add_h_lines(self):
+        self.h_lines = VGroup()
+        for tick in self.y_axis.tick_marks:
+            line = Line(**self.h_line_style)
+            line.match_width(self.x_axis)
+            line.move_to(tick.get_center(), LEFT)
+            self.h_lines.add(line)
+        self.add(self.h_lines)
+
+    def add_bars(self):
+        pass
+
+    # Bar manipulations
+    
+
+
+# Scenes
+class BarChartTest(Scene):
+    def construct(self):
+        bar_chart = BarChart()
+        bar_chart.to_edge(DOWN)
+        self.add(bar_chart)