From 3e2654f88e991b32065a6f70c96f37246876742d Mon Sep 17 00:00:00 2001
From: Igor Tatarnikov <igor.tatarnikov@gmail.com>
Date: Tue, 20 Aug 2024 11:46:31 +0100
Subject: [PATCH] Added comments for fixing camera

---
 brainrender/video.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/brainrender/video.py b/brainrender/video.py
index b62d630..1a23f97 100644
--- a/brainrender/video.py
+++ b/brainrender/video.py
@@ -134,6 +134,9 @@ def make_video(
             if not first_frame:
                 logger.error("No keyframes found, can't fix camera")
 
+            # Sets the focal point of the first frame to the centre of mass of the
+            # full root mesh, since this focal point is set subsequent frames will
+            # have the same focal point unless a new camera is defined
             self.keyframes[0]["camera"][
                 "focal_point"
             ] = self.scene.root._mesh.center_of_mass()