Struct ViewFrustum 

pub struct ViewFrustum {
    pub pos: [f32; 3],
    pub right: [f32; 3],
    pub down: [f32; 3],
    pub forward: [f32; 3],
    pub half_w: f32,
    pub half_h: f32,
    pub far: f32,
}

View frustum for CPU instance culling, in world space. Built each frame from the world camera. half_w/half_h are the tangents of the half-FOV (so the side planes are |x| <= half_w * z etc. in camera space).

Fields

pos: [f32; 3]

Eye position, world voxel units.

right: [f32; 3]

Unit basis toward screen-right (right-handed with down/forward).

down: [f32; 3]

Unit basis toward screen-down (+z is down in voxlap space).

forward: [f32; 3]

Unit view direction; the near side of the frustum is the plane z = 0 in this camera space.

half_w: f32

tan(fov_x / 2): a camera-space point is inside the side planes when |x| <= half_w * z.

half_h: f32

tan(fov_y / 2): inside the top/bottom planes when |y| <= half_h * z.

far: f32

Far-plane distance along forward, world units — instances whose bounding sphere lies wholly beyond it are culled.

Trait Implementations

impl Clone for ViewFrustum

fn clone(&self) -> ViewFrustum

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for ViewFrustum

impl Debug for ViewFrustum

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.