Chooses which chunks to draw and which to build for a camera position (planet-centred or flat-world
metres). Splits by distance, culls by view distance (flat) or horizon (planet), and never leaves a
hole: while a chunk's children are being built it keeps drawing the chunk, and while a merged chunk
is being built it keeps drawing its children.
Chooses which chunks to draw and which to build for a camera position (planet-centred or flat-world metres). Splits by distance, culls by view distance (flat) or horizon (planet), and never leaves a hole: while a chunk's children are being built it keeps drawing the chunk, and while a merged chunk is being built it keeps drawing its children.