Struct DrawGeometry 

pub struct DrawGeometry {
    pub segments: Vec<SegmentInstance>,
    pub segments_additive: usize,
    pub triangles: Vec<ShapeVertex>,
    pub triangles_additive: usize,
}

The two buffers a frame’s draw layer fills, each partitioned by blend mode. Sized once at preset load.

Additive geometry occupies ..n_additive and over-blended geometry the rest, which is what lets one buffer and one render pass serve two pipelines — see the module docs. Producers are appended through push_segment and push_triangle rather than to the vectors directly, so the invariant is maintained in one place.

Fields

segments: Vec<SegmentInstance>

Every line: the waveform, custom waves, shape outlines, borders, motion vectors.

segments_additive: usize

How many leading entries of segments blend additively.

triangles: Vec<ShapeVertex>

Every filled shape’s triangles, as a plain list.

triangles_additive: usize

How many leading entries of triangles blend additively. Always a multiple of 3 — a triangle’s three vertices share one blend mode.

Implementations

impl DrawGeometry

pub fn clear(&mut self)

Discard last frame’s geometry without giving back its capacity — the reuse that keeps the per-frame path allocation-free.

pub fn is_empty(&self) -> bool

Whether anything was built this frame.

Trait Implementations

impl Default for DrawGeometry

fn default() -> DrawGeometry

Returns the “default value” for a type.