Function all_is_cubes::worldgen::axes

pub fn axes(space: &mut Space)

Draw the world axes as lines of blocks centered on (0, 0, 0).

use all_is_cubes::block::AIR;
use all_is_cubes::space::*;
use all_is_cubes::worldgen::axes;
let mut space = Space::empty(Grid::new((-10, -10, -10), (21, 21, 21)));
axes(&mut space);

assert!(space[(10, 0, 0)] != AIR);
assert!(space[(0, 10, 0)] != AIR);
assert!(space[(0, 0, 10)] != AIR);
assert!(space[(-10, 0, 0)] != AIR);
assert!(space[(0, -10, 0)] != AIR);
assert!(space[(0, 0, -10)] != AIR);