added notes

avatar-mixer/src/main.cpp

@@ -51,6 +51,13 @@ void attachAvatarDataToNode(Node* newNode) {
     }
 }
 
+// NOTE: some additional optimizations to consider.
+//    1) use the view frustum to cull those avatars that are out of view. Since avatar data doesn't need to be present
+//       if the avatar is not in view or in the keyhole.
+//    2) after culling for view frustum, sort order the avatars by distance, send the closest ones first.
+//    3) if we need to rate limit the amount of data we send, we can use a distance weighted "semi-random" function to 
+//       determine which avatars are included in the packet stream
+//    4) we should optimize the avatar data format to be more compact (100 bytes is pretty wasteful).
 unsigned char broadcastPacketBuffer[MAX_PACKET_SIZE];
 unsigned char avatarDataBuffer[MAX_PACKET_SIZE];
 void broadcastAvatarData(NodeList* nodeList, sockaddr* nodeAddress) {