Struct DepthQueue 

pub struct DepthQueue { /* private fields */ }

Deferred depth-sorted draw queue.

Implementations

impl DepthQueue

pub fn set_state(&mut self, mode: u8, alpha: f32)

Mirror the live pen blend mode + alpha so the next pushes capture them. Call after std::mem::take so an active blend survives a mid-frame flush.

pub fn push_triangle( &mut self, depth: f32, color: u32, x0: f32, y0: f32, x1: f32, y1: f32, x2: f32, y2: f32, )

Queue a filled triangle (flat per-vertex depth = the sort key).

pub fn push_triangle_zv( &mut self, color: u32, x0: f32, y0: f32, z0: f32, x1: f32, y1: f32, z1: f32, x2: f32, y2: f32, z2: f32, )

Queue a filled triangle with true per-vertex camera-space depth, so the per-pixel z-buffer can resolve interpenetration.

pub fn push_triangle_g( &mut self, depth: f32, x0: f32, y0: f32, c0: u32, x1: f32, y1: f32, c1: u32, x2: f32, y2: f32, c2: u32, bands: u32, )

Queue a Gouraud + posterised triangle (smooth cel), flat per-vertex depth.

pub fn push_triangle_g_zv( &mut self, x0: f32, y0: f32, z0: f32, c0: u32, x1: f32, y1: f32, z1: f32, c1: u32, x2: f32, y2: f32, z2: f32, c2: u32, bands: u32, )

Gouraud triangle with true per-vertex depth (for the z-buffer path).

pub fn push_line( &mut self, depth: f32, color: u32, x0: f32, y0: f32, x1: f32, y1: f32, )

Queue a line segment (flat per-vertex depth).

pub fn flush( self, buf: &mut Vec<u32>, zbuf: Option<&mut Vec<f32>>, width: usize, height: usize, )

Sort back-to-front and rasterise everything into buf.

zbuf: when Some, a per-pixel depth buffer (camera-space z, smaller = nearer) is used so interpenetrating triangles resolve correctly — a true z-buffer on top of the painter’s sort. When None, pure painter’s algorithm (the default/legacy path).

Opaque calls (mode 0, alpha ≈ 1) take the fast direct-write path; calls with a blend mode or alpha < 1 composite via composite_pixel. In the z-buffer path, translucent calls test depth but do not write it, so they layer over the opaque scene (back-to-front sort handles their ordering).

Consumes self — call site does mem::take to avoid borrow conflict.

pub fn is_empty(&self) -> bool

Trait Implementations

impl Debug for DepthQueue

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

Formats the value using the given formatter.

impl Default for DepthQueue

fn default() -> Self

Returns the “default value” for a type.