From b423a423b523ce3f2ba491c6f80530191fa6b6b0 Mon Sep 17 00:00:00 2001
From: Grant Sanderson <grant@3blue1brown.com>
Date: Fri, 15 Jan 2021 10:16:37 -1000
Subject: [PATCH] Make customization more accessible

---
 custom_defaults.yml                  |  1 +
 manimlib/imports.py                  |  1 +
 manimlib/mobject/svg/text_mobject.py |  7 ++++---
 manimlib/utils/customization.py      | 23 +++++++++++++++++++++++
 manimlib/utils/directories.py        | 21 ++-------------------
 5 files changed, 31 insertions(+), 22 deletions(-)
 create mode 100644 manimlib/utils/customization.py

diff --git a/custom_defaults.yml b/custom_defaults.yml
index 7fd8abdb..7c3d03f6 100644
--- a/custom_defaults.yml
+++ b/custom_defaults.yml
@@ -27,6 +27,7 @@ tex:
   # intermediate_filetype: "xdv"
 universal_import_line: "from manimlib.imports import *"
 style:
+  font: "Consolas"
   background_color: "#333333"
 camera_qualities:
   low:
diff --git a/manimlib/imports.py b/manimlib/imports.py
index f8a58696..cc01279d 100644
--- a/manimlib/imports.py
+++ b/manimlib/imports.py
@@ -77,6 +77,7 @@ from manimlib.scene.vector_space_scene import *
 from manimlib.utils.bezier import *
 from manimlib.utils.color import *
 from manimlib.utils.config_ops import *
+from manimlib.utils.customization import *
 from manimlib.utils.debug import *
 from manimlib.utils.directories import *
 from manimlib.utils.images import *
diff --git a/manimlib/mobject/svg/text_mobject.py b/manimlib/mobject/svg/text_mobject.py
index 1a42eea0..b1718dae 100644
--- a/manimlib/mobject/svg/text_mobject.py
+++ b/manimlib/mobject/svg/text_mobject.py
@@ -6,6 +6,7 @@ import cairo
 from manimlib.constants import *
 from manimlib.mobject.svg.svg_mobject import SVGMobject
 from manimlib.utils.config_ops import digest_config
+from manimlib.utils.customization import get_customization
 from manimlib.utils.directories import get_text_dir
 
 
@@ -135,7 +136,7 @@ class Text(SVGMobject):
         settings = self.font + self.slant + self.weight
         settings += str(self.t2f) + str(self.t2s) + str(self.t2w)
         settings += str(self.lsh) + str(self.size)
-        id_str = self.text+settings
+        id_str = self.text + settings
         hasher = hashlib.sha256()
         hasher.update(id_str.encode())
         return hasher.hexdigest()[:16]
@@ -192,11 +193,11 @@ class Text(SVGMobject):
         lsh = self.lsh * 10
 
         if self.font == '':
-            print(NOT_SETTING_FONT_MSG)
+            self.font = get_customization()['style']['font']
 
         dir_name = get_text_dir()
         hash_name = self.text2hash()
-        file_name = os.path.join(dir_name, hash_name) +'.svg'
+        file_name = os.path.join(dir_name, hash_name) + '.svg'
         if os.path.exists(file_name):
             return file_name
 
diff --git a/manimlib/utils/customization.py b/manimlib/utils/customization.py
new file mode 100644
index 00000000..333a41c6
--- /dev/null
+++ b/manimlib/utils/customization.py
@@ -0,0 +1,23 @@
+import os
+import tempfile
+
+from manimlib.config import get_custom_defaults
+from manimlib.config import get_manim_dir
+
+CUSTOMIZATION = {}
+
+
+def get_customization():
+    if not CUSTOMIZATION:
+        CUSTOMIZATION.update(get_custom_defaults())
+        directories = CUSTOMIZATION["directories"]
+        # Unless user has specified otherwise, use the system default temp
+        # directory for storing tex files, mobject_data, etc.
+        if not directories["temporary_storage"]:
+            directories["temporary_storage"] = tempfile.gettempdir()
+
+        # Assumes all shaders are written into manimlib/shaders
+        directories["shaders"] = os.path.join(
+            get_manim_dir(), "manimlib", "shaders"
+        )
+    return CUSTOMIZATION
diff --git a/manimlib/utils/directories.py b/manimlib/utils/directories.py
index efdaffe4..346312a0 100644
--- a/manimlib/utils/directories.py
+++ b/manimlib/utils/directories.py
@@ -1,28 +1,11 @@
 import os
-import tempfile
 
 from manimlib.utils.file_ops import guarantee_existence
-from manimlib.config import get_custom_defaults
-from manimlib.config import get_manim_dir
-
-PRE_COMPUTED_DIRS = {}
+from manimlib.utils.customization import get_customization
 
 
 def get_directories():
-    if not PRE_COMPUTED_DIRS:
-        custom_defaults = get_custom_defaults()
-        PRE_COMPUTED_DIRS.update(custom_defaults["directories"])
-
-        # Unless user has specified otherwise, use the system default temp
-        # directory for storing tex files, mobject_data, etc.
-        if not PRE_COMPUTED_DIRS["temporary_storage"]:
-            PRE_COMPUTED_DIRS["temporary_storage"] = tempfile.gettempdir()
-
-        # Assumes all shaders are written into manimlib/shaders
-        PRE_COMPUTED_DIRS["shaders"] = os.path.join(
-            get_manim_dir(), "manimlib", "shaders"
-        )
-    return PRE_COMPUTED_DIRS
+    return get_customization()["directories"]
 
 
 def get_temp_dir():