"""BFS wavefront: a front spreading ring by ring across a walled grid.
Render (the driver does this for every palette; these are for eyeballing):
P=/opt/homebrew/opt/python@3.11/bin/python3.11
ASSET_MODE=still $P -m manim -s -t -r 1600,1600 manim/bfs_wavefront.py BfsWavefront
ASSET_MODE=motion $P -m manim -qh -r 1600,1600 manim/bfs_wavefront.py BfsWavefrontLoop
"""
from collections import deque
from manim import (
Line,
Square,
Text,
ValueTracker,
VGroup,
The full Manim source and the rendered video come with a plan.
