Struct SpriteCutawayClip 

pub struct SpriteCutawayClip {
    pub origin: [f32; 3],
    pub inv_rows: [[f32; 3]; 3],
    pub inv_vws: f32,
    pub xy_lo: [f32; 2],
    pub xy_hi: [f32; 2],
    pub z_clip: f32,
}

CA.4 — one clipped grid’s cutaway volume for the sprite cull: the footprint rule. An instance whose origin, mapped into the grid’s local voxel frame, lands inside the grid’s XY chunk footprint with z < z_clip is hidden this frame — dropped from the visible set, which also stops it casting sprite shadows (the shadow pass marches the culled visible set). Instances outside the footprint are never affected. Built per frame by SceneRenderer::render_scene from the per-grid world transforms + the resident chunk AABBs.

Fields

origin: [f32; 3]

Grid world origin.

inv_rows: [[f32; 3]; 3]

World→local rotation rows: local[i] = dot(inv_rows[i], w - origin) (= the grid’s local→world rotation columns, reused as rows).

inv_vws: f32

1 / voxel_world_size — world offsets → voxel coords.

xy_lo: [f32; 2]

XY footprint [lo, hi) of the grid’s resident chunks, voxel coords.

xy_hi: [f32; 2]

See Self::xy_lo.

z_clip: f32

The clip plane (crate::GridWorldTransform::z_clip), voxel z.

Trait Implementations

impl Clone for SpriteCutawayClip

fn clone(&self) -> SpriteCutawayClip

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SpriteCutawayClip

impl PartialEq for SpriteCutawayClip

fn eq(&self, other: &SpriteCutawayClip) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for SpriteCutawayClip