Struct SeenSpace 

pub struct SeenSpace {
    pub cell: usize,
    pub through: Option<usize>,
    pub depth: u8,
    pub to_eye: Mat4,
    pub light: Option<Light>,
    pub door: Option<SeenDoor>,
}

A space the eye sees.

Fields

cell: usize

The space, by its number in the tree.

through: Option<usize>

The seen space whose doorway it shows through; None for the eye’s own.

depth: u8

How many doorways deep it shows: 0 for the eye’s own space. The stencil that marks where each doorway opens counts them in eight bits, so the eye sees no deeper than 255.

to_eye: Mat4

Maps the space into the eye’s.

light: Option<Light>

The space’s light, in the eye’s space.

door: Option<SeenDoor>

The doorway it shows through; None for the eye’s own space.