Add automatic positioning for live streams

animation/creation.py

@@ -15,6 +15,8 @@ from utils.paths import counterclockwise_path
 from utils.rate_functions import double_smooth
 from utils.rate_functions import smooth
 
+import position
+
 # Drawing
 
 
@@ -98,6 +100,15 @@ class Write(DrawBorderThenFill):
             mobject = TextMobject(mob_or_text)
         else:
             mobject = mob_or_text
+
+        if IS_LIVE_STREAMING:
+            print(position.current)
+            mobject.shift(position.current)
+            position.current = position.current + 2 * DOWN
+            if position.current[1] < -3:
+                position.current[1] = 3
+                position.current = position.current + 3 * RIGHT
+
         if "run_time" not in kwargs:
             self.establish_run_time(mobject)
         if "lag_factor" not in kwargs:

position.py

@@ -0,0 +1,3 @@
+from constants import *
+
+current = 5 * LEFT + 3 * UP

scene/scene.py

@@ -29,6 +29,9 @@ from utils.output_directory_getters import get_image_output_directory
 
 from container.container import Container
 
+import position
+from mobject.svg.tex_mobject import TextMobject
+from animation.creation import Write
 
 class Scene(Container):
     CONFIG = {
@@ -343,6 +346,10 @@ class Scene(Container):
         self.mobjects = []
         self.foreground_mobjects = []
         self.continual_animation = []
+
+        if IS_LIVE_STREAMING:
+            position.current = 5 * LEFT + 3 * UP
+            print(position.current)
         return self
 
     def get_mobjects(self):
@@ -512,7 +519,7 @@ class Scene(Container):
             n_frames = 1
             frame = self.get_frame()
             self.add_frames(*[frame] * n_frames)
-            sleep(self.frame_duration * 999/1000)
+            sleep(self.frame_duration * 99/100)
 
     def clean_up_animations(self, *animations):
         for animation in animations:
@@ -631,6 +638,7 @@ class Scene(Container):
             '-pix_fmt', 'rgba',
             '-r', str(fps),  # frames per second
             '-i', '-',  # The imput comes from a pipe
+            '-c:v', 'h264_nvenc',
             '-an',  # Tells FFMPEG not to expect any audio
             '-loglevel', 'error',
         ]
@@ -667,6 +675,10 @@ class Scene(Container):
         else:
             os.rename(*self.args_to_rename_file)
 
+    def tex(self, latex):
+        eq = TextMobject(latex)
+        self.play(Write(eq))
+
 
 class EndSceneEarlyException(Exception):
     pass